Initial Commit

This commit is contained in:
2026-05-20 11:52:18 -04:00
commit ed0f93036d
703 changed files with 81299 additions and 0 deletions
+6
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# Port the Express server listens on
PORT=3001
# Optional: seed directories on first run (can also be set via the UI settings)
# TARGET_DIR=C:\path\to\target
# RESULTS_DIR=C:\path\to\results
+7
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{
"target_dir": "C:\\Users\\26005101\\Desktop\\CGW453\\CGW453",
"results_dir": "C:\\Users\\26005101\\Desktop\\MIA\\Test_results",
"avg_time_coe": "6600",
"avg_time_p2p": "5400",
"avg_time_p3p": "6000"
}
+64
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'use strict';
/**
* In-memory test store + JSON-file config persistence.
* No native modules required.
*/
const fs = require('fs');
const path = require('path');
const CONFIG_PATH = path.join(__dirname, 'config.json');
// ── Config ───────────────────────────────────────────────────────────────────
let _config = {};
try {
if (fs.existsSync(CONFIG_PATH)) {
_config = JSON.parse(fs.readFileSync(CONFIG_PATH, 'utf8'));
}
} catch { _config = {}; }
function _saveConfig() {
fs.writeFileSync(CONFIG_PATH, JSON.stringify(_config, null, 2));
}
function getConfig(key) { return _config[key] ?? null; }
function setConfig(key, value) { _config[key] = value; _saveConfig(); }
function delConfig(key) { delete _config[key]; _saveConfig(); }
// ── Tests (keyed by full derived ID) ─────────────────────────────────────────
/** @type {Map<string, object>} */
const _tests = new Map();
function upsertTest(test) {
const existing = _tests.get(test.id);
_tests.set(test.id, {
...test,
// Preserve completion state when re-inserting from a target scan
completed: existing ? existing.completed : 0,
completed_at: existing ? existing.completed_at : null,
duration_seconds: existing ? existing.duration_seconds : null,
});
}
function markCompleted(file_id, device, completed_at, duration_seconds) {
for (const [id, test] of _tests) {
if (test.file_id === file_id && (!device || test.device === device)) {
_tests.set(id, { ...test, completed: 1, completed_at, duration_seconds });
}
}
}
function resetByFileIdAndDevice(file_id, device) {
for (const [id, test] of _tests) {
if (test.file_id === file_id && (!device || test.device === device)) {
_tests.set(id, { ...test, completed: 0, completed_at: null, duration_seconds: null });
}
}
}
function clearTests() { _tests.clear(); }
function getAllTests() { return Array.from(_tests.values()); }
module.exports = {
getConfig, setConfig, delConfig,
upsertTest, markCompleted, resetByFileIdAndDevice, clearTests, getAllTests,
};
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'use strict';
require('dotenv').config();
const express = require('express');
const cors = require('cors');
const path = require('path');
const fs = require('fs');
const { getConfig } = require('./db');
const { fullScan } = require('./scanner');
const { startWatching } = require('./watcher');
const app = express();
const PORT = process.env.PORT || 3001;
app.use(cors());
app.use(express.json());
// ── API routes ──────────────────────────────────────────────────────────────
app.use('/api/tests', require('./routes/tests'));
app.use('/api/stats', require('./routes/stats'));
app.use('/api/config', require('./routes/config'));
app.use('/api/browse', require('./routes/browse'));
app.use('/api/events', require('./routes/events'));
// ── Serve built React frontend in production ────────────────────────────────
const distPath = path.resolve(__dirname, '../dashboard/dist');
if (fs.existsSync(distPath)) {
app.use(express.static(distPath));
app.get('*', (req, res) => res.sendFile(path.join(distPath, 'index.html')));
}
// ── Start ───────────────────────────────────────────────────────────────────
async function start() {
const targetDir = getConfig('target_dir');
const resultsDir = getConfig('results_dir');
if (targetDir && resultsDir) {
console.log('[server] Scanning directories...');
await fullScan(targetDir, resultsDir);
const { getAllTests } = require('./db');
const tests = getAllTests();
console.log(`[server] Startup scan complete — ${tests.length} tests found, ${tests.filter(t => t.completed).length} completed`);
startWatching(targetDir, resultsDir);
console.log('[server] Watching for changes.');
} else {
console.log('[server] No directories configured — open the dashboard settings to get started.');
}
app.listen(PORT, '0.0.0.0', () => {
console.log(`[server] Listening on http://0.0.0.0:${PORT}`);
});
}
start().catch(console.error);
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#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
case `uname` in
*CYGWIN*|*MINGW*|*MSYS*)
if command -v cygpath > /dev/null 2>&1; then
basedir=`cygpath -w "$basedir"`
fi
;;
esac
if [ -x "$basedir/node" ]; then
exec "$basedir/node" "$basedir/../mime/cli.js" "$@"
else
exec node "$basedir/../mime/cli.js" "$@"
fi
+17
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@ECHO off
GOTO start
:find_dp0
SET dp0=%~dp0
EXIT /b
:start
SETLOCAL
CALL :find_dp0
IF EXIST "%dp0%\node.exe" (
SET "_prog=%dp0%\node.exe"
) ELSE (
SET "_prog=node"
SET PATHEXT=%PATHEXT:;.JS;=;%
)
endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%" "%dp0%\..\mime\cli.js" %*
+28
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#!/usr/bin/env pwsh
$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
$exe=""
if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
# Fix case when both the Windows and Linux builds of Node
# are installed in the same directory
$exe=".exe"
}
$ret=0
if (Test-Path "$basedir/node$exe") {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "$basedir/node$exe" "$basedir/../mime/cli.js" $args
} else {
& "$basedir/node$exe" "$basedir/../mime/cli.js" $args
}
$ret=$LASTEXITCODE
} else {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "node$exe" "$basedir/../mime/cli.js" $args
} else {
& "node$exe" "$basedir/../mime/cli.js" $args
}
$ret=$LASTEXITCODE
}
exit $ret
+886
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{
"name": "dashboard-server",
"version": "1.0.0",
"lockfileVersion": 3,
"requires": true,
"packages": {
"node_modules/accepts": {
"version": "1.3.8",
"resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
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"license": "MIT",
"dependencies": {
"mime-types": "~2.1.34",
"negotiator": "0.6.3"
},
"engines": {
"node": ">= 0.6"
}
},
"node_modules/array-flatten": {
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"license": "MIT"
},
"node_modules/body-parser": {
"version": "1.20.5",
"resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.5.tgz",
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"integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA==",
"license": "MIT",
"engines": {
"node": ">= 0.4.0"
}
},
"node_modules/vary": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
"integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
"license": "MIT",
"engines": {
"node": ">= 0.8"
}
}
}
}
+243
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1.3.8 / 2022-02-02
==================
* deps: mime-types@~2.1.34
- deps: mime-db@~1.51.0
* deps: negotiator@0.6.3
1.3.7 / 2019-04-29
==================
* deps: negotiator@0.6.2
- Fix sorting charset, encoding, and language with extra parameters
1.3.6 / 2019-04-28
==================
* deps: mime-types@~2.1.24
- deps: mime-db@~1.40.0
1.3.5 / 2018-02-28
==================
* deps: mime-types@~2.1.18
- deps: mime-db@~1.33.0
1.3.4 / 2017-08-22
==================
* deps: mime-types@~2.1.16
- deps: mime-db@~1.29.0
1.3.3 / 2016-05-02
==================
* deps: mime-types@~2.1.11
- deps: mime-db@~1.23.0
* deps: negotiator@0.6.1
- perf: improve `Accept` parsing speed
- perf: improve `Accept-Charset` parsing speed
- perf: improve `Accept-Encoding` parsing speed
- perf: improve `Accept-Language` parsing speed
1.3.2 / 2016-03-08
==================
* deps: mime-types@~2.1.10
- Fix extension of `application/dash+xml`
- Update primary extension for `audio/mp4`
- deps: mime-db@~1.22.0
1.3.1 / 2016-01-19
==================
* deps: mime-types@~2.1.9
- deps: mime-db@~1.21.0
1.3.0 / 2015-09-29
==================
* deps: mime-types@~2.1.7
- deps: mime-db@~1.19.0
* deps: negotiator@0.6.0
- Fix including type extensions in parameters in `Accept` parsing
- Fix parsing `Accept` parameters with quoted equals
- Fix parsing `Accept` parameters with quoted semicolons
- Lazy-load modules from main entry point
- perf: delay type concatenation until needed
- perf: enable strict mode
- perf: hoist regular expressions
- perf: remove closures getting spec properties
- perf: remove a closure from media type parsing
- perf: remove property delete from media type parsing
1.2.13 / 2015-09-06
===================
* deps: mime-types@~2.1.6
- deps: mime-db@~1.18.0
1.2.12 / 2015-07-30
===================
* deps: mime-types@~2.1.4
- deps: mime-db@~1.16.0
1.2.11 / 2015-07-16
===================
* deps: mime-types@~2.1.3
- deps: mime-db@~1.15.0
1.2.10 / 2015-07-01
===================
* deps: mime-types@~2.1.2
- deps: mime-db@~1.14.0
1.2.9 / 2015-06-08
==================
* deps: mime-types@~2.1.1
- perf: fix deopt during mapping
1.2.8 / 2015-06-07
==================
* deps: mime-types@~2.1.0
- deps: mime-db@~1.13.0
* perf: avoid argument reassignment & argument slice
* perf: avoid negotiator recursive construction
* perf: enable strict mode
* perf: remove unnecessary bitwise operator
1.2.7 / 2015-05-10
==================
* deps: negotiator@0.5.3
- Fix media type parameter matching to be case-insensitive
1.2.6 / 2015-05-07
==================
* deps: mime-types@~2.0.11
- deps: mime-db@~1.9.1
* deps: negotiator@0.5.2
- Fix comparing media types with quoted values
- Fix splitting media types with quoted commas
1.2.5 / 2015-03-13
==================
* deps: mime-types@~2.0.10
- deps: mime-db@~1.8.0
1.2.4 / 2015-02-14
==================
* Support Node.js 0.6
* deps: mime-types@~2.0.9
- deps: mime-db@~1.7.0
* deps: negotiator@0.5.1
- Fix preference sorting to be stable for long acceptable lists
1.2.3 / 2015-01-31
==================
* deps: mime-types@~2.0.8
- deps: mime-db@~1.6.0
1.2.2 / 2014-12-30
==================
* deps: mime-types@~2.0.7
- deps: mime-db@~1.5.0
1.2.1 / 2014-12-30
==================
* deps: mime-types@~2.0.5
- deps: mime-db@~1.3.1
1.2.0 / 2014-12-19
==================
* deps: negotiator@0.5.0
- Fix list return order when large accepted list
- Fix missing identity encoding when q=0 exists
- Remove dynamic building of Negotiator class
1.1.4 / 2014-12-10
==================
* deps: mime-types@~2.0.4
- deps: mime-db@~1.3.0
1.1.3 / 2014-11-09
==================
* deps: mime-types@~2.0.3
- deps: mime-db@~1.2.0
1.1.2 / 2014-10-14
==================
* deps: negotiator@0.4.9
- Fix error when media type has invalid parameter
1.1.1 / 2014-09-28
==================
* deps: mime-types@~2.0.2
- deps: mime-db@~1.1.0
* deps: negotiator@0.4.8
- Fix all negotiations to be case-insensitive
- Stable sort preferences of same quality according to client order
1.1.0 / 2014-09-02
==================
* update `mime-types`
1.0.7 / 2014-07-04
==================
* Fix wrong type returned from `type` when match after unknown extension
1.0.6 / 2014-06-24
==================
* deps: negotiator@0.4.7
1.0.5 / 2014-06-20
==================
* fix crash when unknown extension given
1.0.4 / 2014-06-19
==================
* use `mime-types`
1.0.3 / 2014-06-11
==================
* deps: negotiator@0.4.6
- Order by specificity when quality is the same
1.0.2 / 2014-05-29
==================
* Fix interpretation when header not in request
* deps: pin negotiator@0.4.5
1.0.1 / 2014-01-18
==================
* Identity encoding isn't always acceptable
* deps: negotiator@~0.4.0
1.0.0 / 2013-12-27
==================
* Genesis
+23
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(The MIT License)
Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+140
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# accepts
[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-url]
[![Node.js Version][node-version-image]][node-version-url]
[![Build Status][github-actions-ci-image]][github-actions-ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
Higher level content negotiation based on [negotiator](https://www.npmjs.com/package/negotiator).
Extracted from [koa](https://www.npmjs.com/package/koa) for general use.
In addition to negotiator, it allows:
- Allows types as an array or arguments list, ie `(['text/html', 'application/json'])`
as well as `('text/html', 'application/json')`.
- Allows type shorthands such as `json`.
- Returns `false` when no types match
- Treats non-existent headers as `*`
## Installation
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
```sh
$ npm install accepts
```
## API
```js
var accepts = require('accepts')
```
### accepts(req)
Create a new `Accepts` object for the given `req`.
#### .charset(charsets)
Return the first accepted charset. If nothing in `charsets` is accepted,
then `false` is returned.
#### .charsets()
Return the charsets that the request accepts, in the order of the client's
preference (most preferred first).
#### .encoding(encodings)
Return the first accepted encoding. If nothing in `encodings` is accepted,
then `false` is returned.
#### .encodings()
Return the encodings that the request accepts, in the order of the client's
preference (most preferred first).
#### .language(languages)
Return the first accepted language. If nothing in `languages` is accepted,
then `false` is returned.
#### .languages()
Return the languages that the request accepts, in the order of the client's
preference (most preferred first).
#### .type(types)
Return the first accepted type (and it is returned as the same text as what
appears in the `types` array). If nothing in `types` is accepted, then `false`
is returned.
The `types` array can contain full MIME types or file extensions. Any value
that is not a full MIME types is passed to `require('mime-types').lookup`.
#### .types()
Return the types that the request accepts, in the order of the client's
preference (most preferred first).
## Examples
### Simple type negotiation
This simple example shows how to use `accepts` to return a different typed
respond body based on what the client wants to accept. The server lists it's
preferences in order and will get back the best match between the client and
server.
```js
var accepts = require('accepts')
var http = require('http')
function app (req, res) {
var accept = accepts(req)
// the order of this list is significant; should be server preferred order
switch (accept.type(['json', 'html'])) {
case 'json':
res.setHeader('Content-Type', 'application/json')
res.write('{"hello":"world!"}')
break
case 'html':
res.setHeader('Content-Type', 'text/html')
res.write('<b>hello, world!</b>')
break
default:
// the fallback is text/plain, so no need to specify it above
res.setHeader('Content-Type', 'text/plain')
res.write('hello, world!')
break
}
res.end()
}
http.createServer(app).listen(3000)
```
You can test this out with the cURL program:
```sh
curl -I -H'Accept: text/html' http://localhost:3000/
```
## License
[MIT](LICENSE)
[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/accepts/master
[coveralls-url]: https://coveralls.io/r/jshttp/accepts?branch=master
[github-actions-ci-image]: https://badgen.net/github/checks/jshttp/accepts/master?label=ci
[github-actions-ci-url]: https://github.com/jshttp/accepts/actions/workflows/ci.yml
[node-version-image]: https://badgen.net/npm/node/accepts
[node-version-url]: https://nodejs.org/en/download
[npm-downloads-image]: https://badgen.net/npm/dm/accepts
[npm-url]: https://npmjs.org/package/accepts
[npm-version-image]: https://badgen.net/npm/v/accepts
+238
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/*!
* accepts
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var Negotiator = require('negotiator')
var mime = require('mime-types')
/**
* Module exports.
* @public
*/
module.exports = Accepts
/**
* Create a new Accepts object for the given req.
*
* @param {object} req
* @public
*/
function Accepts (req) {
if (!(this instanceof Accepts)) {
return new Accepts(req)
}
this.headers = req.headers
this.negotiator = new Negotiator(req)
}
/**
* Check if the given `type(s)` is acceptable, returning
* the best match when true, otherwise `undefined`, in which
* case you should respond with 406 "Not Acceptable".
*
* The `type` value may be a single mime type string
* such as "application/json", the extension name
* such as "json" or an array `["json", "html", "text/plain"]`. When a list
* or array is given the _best_ match, if any is returned.
*
* Examples:
*
* // Accept: text/html
* this.types('html');
* // => "html"
*
* // Accept: text/*, application/json
* this.types('html');
* // => "html"
* this.types('text/html');
* // => "text/html"
* this.types('json', 'text');
* // => "json"
* this.types('application/json');
* // => "application/json"
*
* // Accept: text/*, application/json
* this.types('image/png');
* this.types('png');
* // => undefined
*
* // Accept: text/*;q=.5, application/json
* this.types(['html', 'json']);
* this.types('html', 'json');
* // => "json"
*
* @param {String|Array} types...
* @return {String|Array|Boolean}
* @public
*/
Accepts.prototype.type =
Accepts.prototype.types = function (types_) {
var types = types_
// support flattened arguments
if (types && !Array.isArray(types)) {
types = new Array(arguments.length)
for (var i = 0; i < types.length; i++) {
types[i] = arguments[i]
}
}
// no types, return all requested types
if (!types || types.length === 0) {
return this.negotiator.mediaTypes()
}
// no accept header, return first given type
if (!this.headers.accept) {
return types[0]
}
var mimes = types.map(extToMime)
var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
var first = accepts[0]
return first
? types[mimes.indexOf(first)]
: false
}
/**
* Return accepted encodings or best fit based on `encodings`.
*
* Given `Accept-Encoding: gzip, deflate`
* an array sorted by quality is returned:
*
* ['gzip', 'deflate']
*
* @param {String|Array} encodings...
* @return {String|Array}
* @public
*/
Accepts.prototype.encoding =
Accepts.prototype.encodings = function (encodings_) {
var encodings = encodings_
// support flattened arguments
if (encodings && !Array.isArray(encodings)) {
encodings = new Array(arguments.length)
for (var i = 0; i < encodings.length; i++) {
encodings[i] = arguments[i]
}
}
// no encodings, return all requested encodings
if (!encodings || encodings.length === 0) {
return this.negotiator.encodings()
}
return this.negotiator.encodings(encodings)[0] || false
}
/**
* Return accepted charsets or best fit based on `charsets`.
*
* Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
* an array sorted by quality is returned:
*
* ['utf-8', 'utf-7', 'iso-8859-1']
*
* @param {String|Array} charsets...
* @return {String|Array}
* @public
*/
Accepts.prototype.charset =
Accepts.prototype.charsets = function (charsets_) {
var charsets = charsets_
// support flattened arguments
if (charsets && !Array.isArray(charsets)) {
charsets = new Array(arguments.length)
for (var i = 0; i < charsets.length; i++) {
charsets[i] = arguments[i]
}
}
// no charsets, return all requested charsets
if (!charsets || charsets.length === 0) {
return this.negotiator.charsets()
}
return this.negotiator.charsets(charsets)[0] || false
}
/**
* Return accepted languages or best fit based on `langs`.
*
* Given `Accept-Language: en;q=0.8, es, pt`
* an array sorted by quality is returned:
*
* ['es', 'pt', 'en']
*
* @param {String|Array} langs...
* @return {Array|String}
* @public
*/
Accepts.prototype.lang =
Accepts.prototype.langs =
Accepts.prototype.language =
Accepts.prototype.languages = function (languages_) {
var languages = languages_
// support flattened arguments
if (languages && !Array.isArray(languages)) {
languages = new Array(arguments.length)
for (var i = 0; i < languages.length; i++) {
languages[i] = arguments[i]
}
}
// no languages, return all requested languages
if (!languages || languages.length === 0) {
return this.negotiator.languages()
}
return this.negotiator.languages(languages)[0] || false
}
/**
* Convert extnames to mime.
*
* @param {String} type
* @return {String}
* @private
*/
function extToMime (type) {
return type.indexOf('/') === -1
? mime.lookup(type)
: type
}
/**
* Check if mime is valid.
*
* @param {String} type
* @return {String}
* @private
*/
function validMime (type) {
return typeof type === 'string'
}
+47
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{
"name": "accepts",
"description": "Higher-level content negotiation",
"version": "1.3.8",
"contributors": [
"Douglas Christopher Wilson <doug@somethingdoug.com>",
"Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
],
"license": "MIT",
"repository": "jshttp/accepts",
"dependencies": {
"mime-types": "~2.1.34",
"negotiator": "0.6.3"
},
"devDependencies": {
"deep-equal": "1.0.1",
"eslint": "7.32.0",
"eslint-config-standard": "14.1.1",
"eslint-plugin-import": "2.25.4",
"eslint-plugin-markdown": "2.2.1",
"eslint-plugin-node": "11.1.0",
"eslint-plugin-promise": "4.3.1",
"eslint-plugin-standard": "4.1.0",
"mocha": "9.2.0",
"nyc": "15.1.0"
},
"files": [
"LICENSE",
"HISTORY.md",
"index.js"
],
"engines": {
"node": ">= 0.6"
},
"scripts": {
"lint": "eslint .",
"test": "mocha --reporter spec --check-leaks --bail test/",
"test-ci": "nyc --reporter=lcov --reporter=text npm test",
"test-cov": "nyc --reporter=html --reporter=text npm test"
},
"keywords": [
"content",
"negotiation",
"accept",
"accepts"
]
}
+21
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The MIT License (MIT)
Copyright (c) 2014 Blake Embrey (hello@blakeembrey.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
+43
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# Array Flatten
[![NPM version][npm-image]][npm-url]
[![NPM downloads][downloads-image]][downloads-url]
[![Build status][travis-image]][travis-url]
[![Test coverage][coveralls-image]][coveralls-url]
> Flatten an array of nested arrays into a single flat array. Accepts an optional depth.
## Installation
```
npm install array-flatten --save
```
## Usage
```javascript
var flatten = require('array-flatten')
flatten([1, [2, [3, [4, [5], 6], 7], 8], 9])
//=> [1, 2, 3, 4, 5, 6, 7, 8, 9]
flatten([1, [2, [3, [4, [5], 6], 7], 8], 9], 2)
//=> [1, 2, 3, [4, [5], 6], 7, 8, 9]
(function () {
flatten(arguments) //=> [1, 2, 3]
})(1, [2, 3])
```
## License
MIT
[npm-image]: https://img.shields.io/npm/v/array-flatten.svg?style=flat
[npm-url]: https://npmjs.org/package/array-flatten
[downloads-image]: https://img.shields.io/npm/dm/array-flatten.svg?style=flat
[downloads-url]: https://npmjs.org/package/array-flatten
[travis-image]: https://img.shields.io/travis/blakeembrey/array-flatten.svg?style=flat
[travis-url]: https://travis-ci.org/blakeembrey/array-flatten
[coveralls-image]: https://img.shields.io/coveralls/blakeembrey/array-flatten.svg?style=flat
[coveralls-url]: https://coveralls.io/r/blakeembrey/array-flatten?branch=master
+64
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'use strict'
/**
* Expose `arrayFlatten`.
*/
module.exports = arrayFlatten
/**
* Recursive flatten function with depth.
*
* @param {Array} array
* @param {Array} result
* @param {Number} depth
* @return {Array}
*/
function flattenWithDepth (array, result, depth) {
for (var i = 0; i < array.length; i++) {
var value = array[i]
if (depth > 0 && Array.isArray(value)) {
flattenWithDepth(value, result, depth - 1)
} else {
result.push(value)
}
}
return result
}
/**
* Recursive flatten function. Omitting depth is slightly faster.
*
* @param {Array} array
* @param {Array} result
* @return {Array}
*/
function flattenForever (array, result) {
for (var i = 0; i < array.length; i++) {
var value = array[i]
if (Array.isArray(value)) {
flattenForever(value, result)
} else {
result.push(value)
}
}
return result
}
/**
* Flatten an array, with the ability to define a depth.
*
* @param {Array} array
* @param {Number} depth
* @return {Array}
*/
function arrayFlatten (array, depth) {
if (depth == null) {
return flattenForever(array, [])
}
return flattenWithDepth(array, [], depth)
}
+39
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{
"name": "array-flatten",
"version": "1.1.1",
"description": "Flatten an array of nested arrays into a single flat array",
"main": "array-flatten.js",
"files": [
"array-flatten.js",
"LICENSE"
],
"scripts": {
"test": "istanbul cover _mocha -- -R spec"
},
"repository": {
"type": "git",
"url": "git://github.com/blakeembrey/array-flatten.git"
},
"keywords": [
"array",
"flatten",
"arguments",
"depth"
],
"author": {
"name": "Blake Embrey",
"email": "hello@blakeembrey.com",
"url": "http://blakeembrey.me"
},
"license": "MIT",
"bugs": {
"url": "https://github.com/blakeembrey/array-flatten/issues"
},
"homepage": "https://github.com/blakeembrey/array-flatten",
"devDependencies": {
"istanbul": "^0.3.13",
"mocha": "^2.2.4",
"pre-commit": "^1.0.7",
"standard": "^3.7.3"
}
}
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1.20.5 / 2026-04-24
===================
* refactor(json): simplify strict mode error string construction
* fix: extended urlencoded parsing of arrays with >100 elements (#716)
* deps: qs@~6.15.1
1.20.4 / 2025-12-01
===================
* deps: qs@~6.14.0
* deps: use tilde notation for dependencies
* deps: http-errors@~2.0.1
* deps: raw-body@~2.5.3
1.20.3 / 2024-09-10
===================
* deps: qs@6.13.0
* add `depth` option to customize the depth level in the parser
* IMPORTANT: The default `depth` level for parsing URL-encoded data is now `32` (previously was `Infinity`)
1.20.2 / 2023-02-21
===================
* Fix strict json error message on Node.js 19+
* deps: content-type@~1.0.5
- perf: skip value escaping when unnecessary
* deps: raw-body@2.5.2
1.20.1 / 2022-10-06
===================
* deps: qs@6.11.0
* perf: remove unnecessary object clone
1.20.0 / 2022-04-02
===================
* Fix error message for json parse whitespace in `strict`
* Fix internal error when inflated body exceeds limit
* Prevent loss of async hooks context
* Prevent hanging when request already read
* deps: depd@2.0.0
- Replace internal `eval` usage with `Function` constructor
- Use instance methods on `process` to check for listeners
* deps: http-errors@2.0.0
- deps: depd@2.0.0
- deps: statuses@2.0.1
* deps: on-finished@2.4.1
* deps: qs@6.10.3
* deps: raw-body@2.5.1
- deps: http-errors@2.0.0
1.19.2 / 2022-02-15
===================
* deps: bytes@3.1.2
* deps: qs@6.9.7
* Fix handling of `__proto__` keys
* deps: raw-body@2.4.3
- deps: bytes@3.1.2
1.19.1 / 2021-12-10
===================
* deps: bytes@3.1.1
* deps: http-errors@1.8.1
- deps: inherits@2.0.4
- deps: toidentifier@1.0.1
- deps: setprototypeof@1.2.0
* deps: qs@6.9.6
* deps: raw-body@2.4.2
- deps: bytes@3.1.1
- deps: http-errors@1.8.1
* deps: safe-buffer@5.2.1
* deps: type-is@~1.6.18
1.19.0 / 2019-04-25
===================
* deps: bytes@3.1.0
- Add petabyte (`pb`) support
* deps: http-errors@1.7.2
- Set constructor name when possible
- deps: setprototypeof@1.1.1
- deps: statuses@'>= 1.5.0 < 2'
* deps: iconv-lite@0.4.24
- Added encoding MIK
* deps: qs@6.7.0
- Fix parsing array brackets after index
* deps: raw-body@2.4.0
- deps: bytes@3.1.0
- deps: http-errors@1.7.2
- deps: iconv-lite@0.4.24
* deps: type-is@~1.6.17
- deps: mime-types@~2.1.24
- perf: prevent internal `throw` on invalid type
1.18.3 / 2018-05-14
===================
* Fix stack trace for strict json parse error
* deps: depd@~1.1.2
- perf: remove argument reassignment
* deps: http-errors@~1.6.3
- deps: depd@~1.1.2
- deps: setprototypeof@1.1.0
- deps: statuses@'>= 1.3.1 < 2'
* deps: iconv-lite@0.4.23
- Fix loading encoding with year appended
- Fix deprecation warnings on Node.js 10+
* deps: qs@6.5.2
* deps: raw-body@2.3.3
- deps: http-errors@1.6.3
- deps: iconv-lite@0.4.23
* deps: type-is@~1.6.16
- deps: mime-types@~2.1.18
1.18.2 / 2017-09-22
===================
* deps: debug@2.6.9
* perf: remove argument reassignment
1.18.1 / 2017-09-12
===================
* deps: content-type@~1.0.4
- perf: remove argument reassignment
- perf: skip parameter parsing when no parameters
* deps: iconv-lite@0.4.19
- Fix ISO-8859-1 regression
- Update Windows-1255
* deps: qs@6.5.1
- Fix parsing & compacting very deep objects
* deps: raw-body@2.3.2
- deps: iconv-lite@0.4.19
1.18.0 / 2017-09-08
===================
* Fix JSON strict violation error to match native parse error
* Include the `body` property on verify errors
* Include the `type` property on all generated errors
* Use `http-errors` to set status code on errors
* deps: bytes@3.0.0
* deps: debug@2.6.8
* deps: depd@~1.1.1
- Remove unnecessary `Buffer` loading
* deps: http-errors@~1.6.2
- deps: depd@1.1.1
* deps: iconv-lite@0.4.18
- Add support for React Native
- Add a warning if not loaded as utf-8
- Fix CESU-8 decoding in Node.js 8
- Improve speed of ISO-8859-1 encoding
* deps: qs@6.5.0
* deps: raw-body@2.3.1
- Use `http-errors` for standard emitted errors
- deps: bytes@3.0.0
- deps: iconv-lite@0.4.18
- perf: skip buffer decoding on overage chunk
* perf: prevent internal `throw` when missing charset
1.17.2 / 2017-05-17
===================
* deps: debug@2.6.7
- Fix `DEBUG_MAX_ARRAY_LENGTH`
- deps: ms@2.0.0
* deps: type-is@~1.6.15
- deps: mime-types@~2.1.15
1.17.1 / 2017-03-06
===================
* deps: qs@6.4.0
- Fix regression parsing keys starting with `[`
1.17.0 / 2017-03-01
===================
* deps: http-errors@~1.6.1
- Make `message` property enumerable for `HttpError`s
- deps: setprototypeof@1.0.3
* deps: qs@6.3.1
- Fix compacting nested arrays
1.16.1 / 2017-02-10
===================
* deps: debug@2.6.1
- Fix deprecation messages in WebStorm and other editors
- Undeprecate `DEBUG_FD` set to `1` or `2`
1.16.0 / 2017-01-17
===================
* deps: debug@2.6.0
- Allow colors in workers
- Deprecated `DEBUG_FD` environment variable
- Fix error when running under React Native
- Use same color for same namespace
- deps: ms@0.7.2
* deps: http-errors@~1.5.1
- deps: inherits@2.0.3
- deps: setprototypeof@1.0.2
- deps: statuses@'>= 1.3.1 < 2'
* deps: iconv-lite@0.4.15
- Added encoding MS-31J
- Added encoding MS-932
- Added encoding MS-936
- Added encoding MS-949
- Added encoding MS-950
- Fix GBK/GB18030 handling of Euro character
* deps: qs@6.2.1
- Fix array parsing from skipping empty values
* deps: raw-body@~2.2.0
- deps: iconv-lite@0.4.15
* deps: type-is@~1.6.14
- deps: mime-types@~2.1.13
1.15.2 / 2016-06-19
===================
* deps: bytes@2.4.0
* deps: content-type@~1.0.2
- perf: enable strict mode
* deps: http-errors@~1.5.0
- Use `setprototypeof` module to replace `__proto__` setting
- deps: statuses@'>= 1.3.0 < 2'
- perf: enable strict mode
* deps: qs@6.2.0
* deps: raw-body@~2.1.7
- deps: bytes@2.4.0
- perf: remove double-cleanup on happy path
* deps: type-is@~1.6.13
- deps: mime-types@~2.1.11
1.15.1 / 2016-05-05
===================
* deps: bytes@2.3.0
- Drop partial bytes on all parsed units
- Fix parsing byte string that looks like hex
* deps: raw-body@~2.1.6
- deps: bytes@2.3.0
* deps: type-is@~1.6.12
- deps: mime-types@~2.1.10
1.15.0 / 2016-02-10
===================
* deps: http-errors@~1.4.0
- Add `HttpError` export, for `err instanceof createError.HttpError`
- deps: inherits@2.0.1
- deps: statuses@'>= 1.2.1 < 2'
* deps: qs@6.1.0
* deps: type-is@~1.6.11
- deps: mime-types@~2.1.9
1.14.2 / 2015-12-16
===================
* deps: bytes@2.2.0
* deps: iconv-lite@0.4.13
* deps: qs@5.2.0
* deps: raw-body@~2.1.5
- deps: bytes@2.2.0
- deps: iconv-lite@0.4.13
* deps: type-is@~1.6.10
- deps: mime-types@~2.1.8
1.14.1 / 2015-09-27
===================
* Fix issue where invalid charset results in 400 when `verify` used
* deps: iconv-lite@0.4.12
- Fix CESU-8 decoding in Node.js 4.x
* deps: raw-body@~2.1.4
- Fix masking critical errors from `iconv-lite`
- deps: iconv-lite@0.4.12
* deps: type-is@~1.6.9
- deps: mime-types@~2.1.7
1.14.0 / 2015-09-16
===================
* Fix JSON strict parse error to match syntax errors
* Provide static `require` analysis in `urlencoded` parser
* deps: depd@~1.1.0
- Support web browser loading
* deps: qs@5.1.0
* deps: raw-body@~2.1.3
- Fix sync callback when attaching data listener causes sync read
* deps: type-is@~1.6.8
- Fix type error when given invalid type to match against
- deps: mime-types@~2.1.6
1.13.3 / 2015-07-31
===================
* deps: type-is@~1.6.6
- deps: mime-types@~2.1.4
1.13.2 / 2015-07-05
===================
* deps: iconv-lite@0.4.11
* deps: qs@4.0.0
- Fix dropping parameters like `hasOwnProperty`
- Fix user-visible incompatibilities from 3.1.0
- Fix various parsing edge cases
* deps: raw-body@~2.1.2
- Fix error stack traces to skip `makeError`
- deps: iconv-lite@0.4.11
* deps: type-is@~1.6.4
- deps: mime-types@~2.1.2
- perf: enable strict mode
- perf: remove argument reassignment
1.13.1 / 2015-06-16
===================
* deps: qs@2.4.2
- Downgraded from 3.1.0 because of user-visible incompatibilities
1.13.0 / 2015-06-14
===================
* Add `statusCode` property on `Error`s, in addition to `status`
* Change `type` default to `application/json` for JSON parser
* Change `type` default to `application/x-www-form-urlencoded` for urlencoded parser
* Provide static `require` analysis
* Use the `http-errors` module to generate errors
* deps: bytes@2.1.0
- Slight optimizations
* deps: iconv-lite@0.4.10
- The encoding UTF-16 without BOM now defaults to UTF-16LE when detection fails
- Leading BOM is now removed when decoding
* deps: on-finished@~2.3.0
- Add defined behavior for HTTP `CONNECT` requests
- Add defined behavior for HTTP `Upgrade` requests
- deps: ee-first@1.1.1
* deps: qs@3.1.0
- Fix dropping parameters like `hasOwnProperty`
- Fix various parsing edge cases
- Parsed object now has `null` prototype
* deps: raw-body@~2.1.1
- Use `unpipe` module for unpiping requests
- deps: iconv-lite@0.4.10
* deps: type-is@~1.6.3
- deps: mime-types@~2.1.1
- perf: reduce try block size
- perf: remove bitwise operations
* perf: enable strict mode
* perf: remove argument reassignment
* perf: remove delete call
1.12.4 / 2015-05-10
===================
* deps: debug@~2.2.0
* deps: qs@2.4.2
- Fix allowing parameters like `constructor`
* deps: on-finished@~2.2.1
* deps: raw-body@~2.0.1
- Fix a false-positive when unpiping in Node.js 0.8
- deps: bytes@2.0.1
* deps: type-is@~1.6.2
- deps: mime-types@~2.0.11
1.12.3 / 2015-04-15
===================
* Slight efficiency improvement when not debugging
* deps: depd@~1.0.1
* deps: iconv-lite@0.4.8
- Add encoding alias UNICODE-1-1-UTF-7
* deps: raw-body@1.3.4
- Fix hanging callback if request aborts during read
- deps: iconv-lite@0.4.8
1.12.2 / 2015-03-16
===================
* deps: qs@2.4.1
- Fix error when parameter `hasOwnProperty` is present
1.12.1 / 2015-03-15
===================
* deps: debug@~2.1.3
- Fix high intensity foreground color for bold
- deps: ms@0.7.0
* deps: type-is@~1.6.1
- deps: mime-types@~2.0.10
1.12.0 / 2015-02-13
===================
* add `debug` messages
* accept a function for the `type` option
* use `content-type` to parse `Content-Type` headers
* deps: iconv-lite@0.4.7
- Gracefully support enumerables on `Object.prototype`
* deps: raw-body@1.3.3
- deps: iconv-lite@0.4.7
* deps: type-is@~1.6.0
- fix argument reassignment
- fix false-positives in `hasBody` `Transfer-Encoding` check
- support wildcard for both type and subtype (`*/*`)
- deps: mime-types@~2.0.9
1.11.0 / 2015-01-30
===================
* make internal `extended: true` depth limit infinity
* deps: type-is@~1.5.6
- deps: mime-types@~2.0.8
1.10.2 / 2015-01-20
===================
* deps: iconv-lite@0.4.6
- Fix rare aliases of single-byte encodings
* deps: raw-body@1.3.2
- deps: iconv-lite@0.4.6
1.10.1 / 2015-01-01
===================
* deps: on-finished@~2.2.0
* deps: type-is@~1.5.5
- deps: mime-types@~2.0.7
1.10.0 / 2014-12-02
===================
* make internal `extended: true` array limit dynamic
1.9.3 / 2014-11-21
==================
* deps: iconv-lite@0.4.5
- Fix Windows-31J and X-SJIS encoding support
* deps: qs@2.3.3
- Fix `arrayLimit` behavior
* deps: raw-body@1.3.1
- deps: iconv-lite@0.4.5
* deps: type-is@~1.5.3
- deps: mime-types@~2.0.3
1.9.2 / 2014-10-27
==================
* deps: qs@2.3.2
- Fix parsing of mixed objects and values
1.9.1 / 2014-10-22
==================
* deps: on-finished@~2.1.1
- Fix handling of pipelined requests
* deps: qs@2.3.0
- Fix parsing of mixed implicit and explicit arrays
* deps: type-is@~1.5.2
- deps: mime-types@~2.0.2
1.9.0 / 2014-09-24
==================
* include the charset in "unsupported charset" error message
* include the encoding in "unsupported content encoding" error message
* deps: depd@~1.0.0
1.8.4 / 2014-09-23
==================
* fix content encoding to be case-insensitive
1.8.3 / 2014-09-19
==================
* deps: qs@2.2.4
- Fix issue with object keys starting with numbers truncated
1.8.2 / 2014-09-15
==================
* deps: depd@0.4.5
1.8.1 / 2014-09-07
==================
* deps: media-typer@0.3.0
* deps: type-is@~1.5.1
1.8.0 / 2014-09-05
==================
* make empty-body-handling consistent between chunked requests
- empty `json` produces `{}`
- empty `raw` produces `new Buffer(0)`
- empty `text` produces `''`
- empty `urlencoded` produces `{}`
* deps: qs@2.2.3
- Fix issue where first empty value in array is discarded
* deps: type-is@~1.5.0
- fix `hasbody` to be true for `content-length: 0`
1.7.0 / 2014-09-01
==================
* add `parameterLimit` option to `urlencoded` parser
* change `urlencoded` extended array limit to 100
* respond with 413 when over `parameterLimit` in `urlencoded`
1.6.7 / 2014-08-29
==================
* deps: qs@2.2.2
- Remove unnecessary cloning
1.6.6 / 2014-08-27
==================
* deps: qs@2.2.0
- Array parsing fix
- Performance improvements
1.6.5 / 2014-08-16
==================
* deps: on-finished@2.1.0
1.6.4 / 2014-08-14
==================
* deps: qs@1.2.2
1.6.3 / 2014-08-10
==================
* deps: qs@1.2.1
1.6.2 / 2014-08-07
==================
* deps: qs@1.2.0
- Fix parsing array of objects
1.6.1 / 2014-08-06
==================
* deps: qs@1.1.0
- Accept urlencoded square brackets
- Accept empty values in implicit array notation
1.6.0 / 2014-08-05
==================
* deps: qs@1.0.2
- Complete rewrite
- Limits array length to 20
- Limits object depth to 5
- Limits parameters to 1,000
1.5.2 / 2014-07-27
==================
* deps: depd@0.4.4
- Work-around v8 generating empty stack traces
1.5.1 / 2014-07-26
==================
* deps: depd@0.4.3
- Fix exception when global `Error.stackTraceLimit` is too low
1.5.0 / 2014-07-20
==================
* deps: depd@0.4.2
- Add `TRACE_DEPRECATION` environment variable
- Remove non-standard grey color from color output
- Support `--no-deprecation` argument
- Support `--trace-deprecation` argument
* deps: iconv-lite@0.4.4
- Added encoding UTF-7
* deps: raw-body@1.3.0
- deps: iconv-lite@0.4.4
- Added encoding UTF-7
- Fix `Cannot switch to old mode now` error on Node.js 0.10+
* deps: type-is@~1.3.2
1.4.3 / 2014-06-19
==================
* deps: type-is@1.3.1
- fix global variable leak
1.4.2 / 2014-06-19
==================
* deps: type-is@1.3.0
- improve type parsing
1.4.1 / 2014-06-19
==================
* fix urlencoded extended deprecation message
1.4.0 / 2014-06-19
==================
* add `text` parser
* add `raw` parser
* check accepted charset in content-type (accepts utf-8)
* check accepted encoding in content-encoding (accepts identity)
* deprecate `bodyParser()` middleware; use `.json()` and `.urlencoded()` as needed
* deprecate `urlencoded()` without provided `extended` option
* lazy-load urlencoded parsers
* parsers split into files for reduced mem usage
* support gzip and deflate bodies
- set `inflate: false` to turn off
* deps: raw-body@1.2.2
- Support all encodings from `iconv-lite`
1.3.1 / 2014-06-11
==================
* deps: type-is@1.2.1
- Switch dependency from mime to mime-types@1.0.0
1.3.0 / 2014-05-31
==================
* add `extended` option to urlencoded parser
1.2.2 / 2014-05-27
==================
* deps: raw-body@1.1.6
- assert stream encoding on node.js 0.8
- assert stream encoding on node.js < 0.10.6
- deps: bytes@1
1.2.1 / 2014-05-26
==================
* invoke `next(err)` after request fully read
- prevents hung responses and socket hang ups
1.2.0 / 2014-05-11
==================
* add `verify` option
* deps: type-is@1.2.0
- support suffix matching
1.1.2 / 2014-05-11
==================
* improve json parser speed
1.1.1 / 2014-05-11
==================
* fix repeated limit parsing with every request
1.1.0 / 2014-05-10
==================
* add `type` option
* deps: pin for safety and consistency
1.0.2 / 2014-04-14
==================
* use `type-is` module
1.0.1 / 2014-03-20
==================
* lower default limits to 100kb
+23
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@@ -0,0 +1,23 @@
(The MIT License)
Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+476
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@@ -0,0 +1,476 @@
# body-parser
[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-url]
[![Build Status][ci-image]][ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
[![OpenSSF Scorecard Badge][ossf-scorecard-badge]][ossf-scorecard-visualizer]
Node.js body parsing middleware.
Parse incoming request bodies in a middleware before your handlers, available
under the `req.body` property.
**Note** As `req.body`'s shape is based on user-controlled input, all
properties and values in this object are untrusted and should be validated
before trusting. For example, `req.body.foo.toString()` may fail in multiple
ways, for example the `foo` property may not be there or may not be a string,
and `toString` may not be a function and instead a string or other user input.
[Learn about the anatomy of an HTTP transaction in Node.js](https://nodejs.org/en/docs/guides/anatomy-of-an-http-transaction/).
_This does not handle multipart bodies_, due to their complex and typically
large nature. For multipart bodies, you may be interested in the following
modules:
* [busboy](https://www.npmjs.org/package/busboy#readme) and
[connect-busboy](https://www.npmjs.org/package/connect-busboy#readme)
* [multiparty](https://www.npmjs.org/package/multiparty#readme) and
[connect-multiparty](https://www.npmjs.org/package/connect-multiparty#readme)
* [formidable](https://www.npmjs.org/package/formidable#readme)
* [multer](https://www.npmjs.org/package/multer#readme)
This module provides the following parsers:
* [JSON body parser](#bodyparserjsonoptions)
* [Raw body parser](#bodyparserrawoptions)
* [Text body parser](#bodyparsertextoptions)
* [URL-encoded form body parser](#bodyparserurlencodedoptions)
Other body parsers you might be interested in:
- [body](https://www.npmjs.org/package/body#readme)
- [co-body](https://www.npmjs.org/package/co-body#readme)
## Installation
```sh
$ npm install body-parser
```
## API
```js
var bodyParser = require('body-parser')
```
The `bodyParser` object exposes various factories to create middlewares. All
middlewares will populate the `req.body` property with the parsed body when
the `Content-Type` request header matches the `type` option, or an empty
object (`{}`) if there was no body to parse, the `Content-Type` was not matched,
or an error occurred.
The various errors returned by this module are described in the
[errors section](#errors).
### bodyParser.json([options])
Returns middleware that only parses `json` and only looks at requests where
the `Content-Type` header matches the `type` option. This parser accepts any
Unicode encoding of the body and supports automatic inflation of `gzip` and
`deflate` encodings.
A new `body` object containing the parsed data is populated on the `request`
object after the middleware (i.e. `req.body`).
#### Options
The `json` function takes an optional `options` object that may contain any of
the following keys:
##### inflate
When set to `true`, then deflated (compressed) bodies will be inflated; when
`false`, deflated bodies are rejected. Defaults to `true`.
##### limit
Controls the maximum request body size. If this is a number, then the value
specifies the number of bytes; if it is a string, the value is passed to the
[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
to `'100kb'`.
##### reviver
The `reviver` option is passed directly to `JSON.parse` as the second
argument. You can find more information on this argument
[in the MDN documentation about JSON.parse](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Example.3A_Using_the_reviver_parameter).
##### strict
When set to `true`, will only accept arrays and objects; when `false` will
accept anything `JSON.parse` accepts. Defaults to `true`.
##### type
The `type` option is used to determine what media type the middleware will
parse. This option can be a string, array of strings, or a function. If not a
function, `type` option is passed directly to the
[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
be an extension name (like `json`), a mime type (like `application/json`), or
a mime type with a wildcard (like `*/*` or `*/json`). If a function, the `type`
option is called as `fn(req)` and the request is parsed if it returns a truthy
value. Defaults to `application/json`.
##### verify
The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
where `buf` is a `Buffer` of the raw request body and `encoding` is the
encoding of the request. The parsing can be aborted by throwing an error.
### bodyParser.raw([options])
Returns middleware that parses all bodies as a `Buffer` and only looks at
requests where the `Content-Type` header matches the `type` option. This
parser supports automatic inflation of `gzip` and `deflate` encodings.
A new `body` object containing the parsed data is populated on the `request`
object after the middleware (i.e. `req.body`). This will be a `Buffer` object
of the body.
#### Options
The `raw` function takes an optional `options` object that may contain any of
the following keys:
##### inflate
When set to `true`, then deflated (compressed) bodies will be inflated; when
`false`, deflated bodies are rejected. Defaults to `true`.
##### limit
Controls the maximum request body size. If this is a number, then the value
specifies the number of bytes; if it is a string, the value is passed to the
[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
to `'100kb'`.
##### type
The `type` option is used to determine what media type the middleware will
parse. This option can be a string, array of strings, or a function.
If not a function, `type` option is passed directly to the
[type-is](https://www.npmjs.org/package/type-is#readme) library and this
can be an extension name (like `bin`), a mime type (like
`application/octet-stream`), or a mime type with a wildcard (like `*/*` or
`application/*`). If a function, the `type` option is called as `fn(req)`
and the request is parsed if it returns a truthy value. Defaults to
`application/octet-stream`.
##### verify
The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
where `buf` is a `Buffer` of the raw request body and `encoding` is the
encoding of the request. The parsing can be aborted by throwing an error.
### bodyParser.text([options])
Returns middleware that parses all bodies as a string and only looks at
requests where the `Content-Type` header matches the `type` option. This
parser supports automatic inflation of `gzip` and `deflate` encodings.
A new `body` string containing the parsed data is populated on the `request`
object after the middleware (i.e. `req.body`). This will be a string of the
body.
#### Options
The `text` function takes an optional `options` object that may contain any of
the following keys:
##### defaultCharset
Specify the default character set for the text content if the charset is not
specified in the `Content-Type` header of the request. Defaults to `utf-8`.
##### inflate
When set to `true`, then deflated (compressed) bodies will be inflated; when
`false`, deflated bodies are rejected. Defaults to `true`.
##### limit
Controls the maximum request body size. If this is a number, then the value
specifies the number of bytes; if it is a string, the value is passed to the
[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
to `'100kb'`.
##### type
The `type` option is used to determine what media type the middleware will
parse. This option can be a string, array of strings, or a function. If not
a function, `type` option is passed directly to the
[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
be an extension name (like `txt`), a mime type (like `text/plain`), or a mime
type with a wildcard (like `*/*` or `text/*`). If a function, the `type`
option is called as `fn(req)` and the request is parsed if it returns a
truthy value. Defaults to `text/plain`.
##### verify
The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
where `buf` is a `Buffer` of the raw request body and `encoding` is the
encoding of the request. The parsing can be aborted by throwing an error.
### bodyParser.urlencoded([options])
Returns middleware that only parses `urlencoded` bodies and only looks at
requests where the `Content-Type` header matches the `type` option. This
parser accepts only UTF-8 encoding of the body and supports automatic
inflation of `gzip` and `deflate` encodings.
A new `body` object containing the parsed data is populated on the `request`
object after the middleware (i.e. `req.body`). This object will contain
key-value pairs, where the value can be a string or array (when `extended` is
`false`), or any type (when `extended` is `true`).
#### Options
The `urlencoded` function takes an optional `options` object that may contain
any of the following keys:
##### extended
The `extended` option allows to choose between parsing the URL-encoded data
with the `querystring` library (when `false`) or the `qs` library (when
`true`). The "extended" syntax allows for rich objects and arrays to be
encoded into the URL-encoded format, allowing for a JSON-like experience
with URL-encoded. For more information, please
[see the qs library](https://www.npmjs.org/package/qs#readme).
Defaults to `true`, but using the default has been deprecated. Please
research into the difference between `qs` and `querystring` and choose the
appropriate setting.
##### inflate
When set to `true`, then deflated (compressed) bodies will be inflated; when
`false`, deflated bodies are rejected. Defaults to `true`.
##### limit
Controls the maximum request body size. If this is a number, then the value
specifies the number of bytes; if it is a string, the value is passed to the
[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
to `'100kb'`.
##### parameterLimit
The `parameterLimit` option controls the maximum number of parameters that
are allowed in the URL-encoded data. If a request contains more parameters
than this value, a 413 will be returned to the client. Defaults to `1000`.
##### type
The `type` option is used to determine what media type the middleware will
parse. This option can be a string, array of strings, or a function. If not
a function, `type` option is passed directly to the
[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
be an extension name (like `urlencoded`), a mime type (like
`application/x-www-form-urlencoded`), or a mime type with a wildcard (like
`*/x-www-form-urlencoded`). If a function, the `type` option is called as
`fn(req)` and the request is parsed if it returns a truthy value. Defaults
to `application/x-www-form-urlencoded`.
##### verify
The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
where `buf` is a `Buffer` of the raw request body and `encoding` is the
encoding of the request. The parsing can be aborted by throwing an error.
#### depth
The `depth` option is used to configure the maximum depth of the `qs` library when `extended` is `true`. This allows you to limit the amount of keys that are parsed and can be useful to prevent certain types of abuse. Defaults to `32`. It is recommended to keep this value as low as possible.
## Errors
The middlewares provided by this module create errors using the
[`http-errors` module](https://www.npmjs.com/package/http-errors). The errors
will typically have a `status`/`statusCode` property that contains the suggested
HTTP response code, an `expose` property to determine if the `message` property
should be displayed to the client, a `type` property to determine the type of
error without matching against the `message`, and a `body` property containing
the read body, if available.
The following are the common errors created, though any error can come through
for various reasons.
### content encoding unsupported
This error will occur when the request had a `Content-Encoding` header that
contained an encoding but the "inflation" option was set to `false`. The
`status` property is set to `415`, the `type` property is set to
`'encoding.unsupported'`, and the `charset` property will be set to the
encoding that is unsupported.
### entity parse failed
This error will occur when the request contained an entity that could not be
parsed by the middleware. The `status` property is set to `400`, the `type`
property is set to `'entity.parse.failed'`, and the `body` property is set to
the entity value that failed parsing.
### entity verify failed
This error will occur when the request contained an entity that could not be
failed verification by the defined `verify` option. The `status` property is
set to `403`, the `type` property is set to `'entity.verify.failed'`, and the
`body` property is set to the entity value that failed verification.
### request aborted
This error will occur when the request is aborted by the client before reading
the body has finished. The `received` property will be set to the number of
bytes received before the request was aborted and the `expected` property is
set to the number of expected bytes. The `status` property is set to `400`
and `type` property is set to `'request.aborted'`.
### request entity too large
This error will occur when the request body's size is larger than the "limit"
option. The `limit` property will be set to the byte limit and the `length`
property will be set to the request body's length. The `status` property is
set to `413` and the `type` property is set to `'entity.too.large'`.
### request size did not match content length
This error will occur when the request's length did not match the length from
the `Content-Length` header. This typically occurs when the request is malformed,
typically when the `Content-Length` header was calculated based on characters
instead of bytes. The `status` property is set to `400` and the `type` property
is set to `'request.size.invalid'`.
### stream encoding should not be set
This error will occur when something called the `req.setEncoding` method prior
to this middleware. This module operates directly on bytes only and you cannot
call `req.setEncoding` when using this module. The `status` property is set to
`500` and the `type` property is set to `'stream.encoding.set'`.
### stream is not readable
This error will occur when the request is no longer readable when this middleware
attempts to read it. This typically means something other than a middleware from
this module read the request body already and the middleware was also configured to
read the same request. The `status` property is set to `500` and the `type`
property is set to `'stream.not.readable'`.
### too many parameters
This error will occur when the content of the request exceeds the configured
`parameterLimit` for the `urlencoded` parser. The `status` property is set to
`413` and the `type` property is set to `'parameters.too.many'`.
### unsupported charset "BOGUS"
This error will occur when the request had a charset parameter in the
`Content-Type` header, but the `iconv-lite` module does not support it OR the
parser does not support it. The charset is contained in the message as well
as in the `charset` property. The `status` property is set to `415`, the
`type` property is set to `'charset.unsupported'`, and the `charset` property
is set to the charset that is unsupported.
### unsupported content encoding "bogus"
This error will occur when the request had a `Content-Encoding` header that
contained an unsupported encoding. The encoding is contained in the message
as well as in the `encoding` property. The `status` property is set to `415`,
the `type` property is set to `'encoding.unsupported'`, and the `encoding`
property is set to the encoding that is unsupported.
### The input exceeded the depth
This error occurs when using `bodyParser.urlencoded` with the `extended` property set to `true` and the input exceeds the configured `depth` option. The `status` property is set to `400`. It is recommended to review the `depth` option and evaluate if it requires a higher value. When the `depth` option is set to `32` (default value), the error will not be thrown.
## Examples
### Express/Connect top-level generic
This example demonstrates adding a generic JSON and URL-encoded parser as a
top-level middleware, which will parse the bodies of all incoming requests.
This is the simplest setup.
```js
var express = require('express')
var bodyParser = require('body-parser')
var app = express()
// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }))
// parse application/json
app.use(bodyParser.json())
app.use(function (req, res) {
res.setHeader('Content-Type', 'text/plain')
res.write('you posted:\n')
res.end(JSON.stringify(req.body, null, 2))
})
```
### Express route-specific
This example demonstrates adding body parsers specifically to the routes that
need them. In general, this is the most recommended way to use body-parser with
Express.
```js
var express = require('express')
var bodyParser = require('body-parser')
var app = express()
// create application/json parser
var jsonParser = bodyParser.json()
// create application/x-www-form-urlencoded parser
var urlencodedParser = bodyParser.urlencoded({ extended: false })
// POST /login gets urlencoded bodies
app.post('/login', urlencodedParser, function (req, res) {
res.send('welcome, ' + req.body.username)
})
// POST /api/users gets JSON bodies
app.post('/api/users', jsonParser, function (req, res) {
// create user in req.body
})
```
### Change accepted type for parsers
All the parsers accept a `type` option which allows you to change the
`Content-Type` that the middleware will parse.
```js
var express = require('express')
var bodyParser = require('body-parser')
var app = express()
// parse various different custom JSON types as JSON
app.use(bodyParser.json({ type: 'application/*+json' }))
// parse some custom thing into a Buffer
app.use(bodyParser.raw({ type: 'application/vnd.custom-type' }))
// parse an HTML body into a string
app.use(bodyParser.text({ type: 'text/html' }))
```
## License
[MIT](LICENSE)
[ci-image]: https://badgen.net/github/checks/expressjs/body-parser/master?label=ci
[ci-url]: https://github.com/expressjs/body-parser/actions/workflows/ci.yml
[coveralls-image]: https://badgen.net/coveralls/c/github/expressjs/body-parser/master
[coveralls-url]: https://coveralls.io/r/expressjs/body-parser?branch=master
[node-version-image]: https://badgen.net/npm/node/body-parser
[node-version-url]: https://nodejs.org/en/download
[npm-downloads-image]: https://badgen.net/npm/dm/body-parser
[npm-url]: https://npmjs.org/package/body-parser
[npm-version-image]: https://badgen.net/npm/v/body-parser
[ossf-scorecard-badge]: https://api.scorecard.dev/projects/github.com/expressjs/body-parser/badge
[ossf-scorecard-visualizer]: https://ossf.github.io/scorecard-visualizer/#/projects/github.com/expressjs/body-parser
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/*!
* body-parser
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var deprecate = require('depd')('body-parser')
/**
* Cache of loaded parsers.
* @private
*/
var parsers = Object.create(null)
/**
* @typedef Parsers
* @type {function}
* @property {function} json
* @property {function} raw
* @property {function} text
* @property {function} urlencoded
*/
/**
* Module exports.
* @type {Parsers}
*/
exports = module.exports = deprecate.function(bodyParser,
'bodyParser: use individual json/urlencoded middlewares')
/**
* JSON parser.
* @public
*/
Object.defineProperty(exports, 'json', {
configurable: true,
enumerable: true,
get: createParserGetter('json')
})
/**
* Raw parser.
* @public
*/
Object.defineProperty(exports, 'raw', {
configurable: true,
enumerable: true,
get: createParserGetter('raw')
})
/**
* Text parser.
* @public
*/
Object.defineProperty(exports, 'text', {
configurable: true,
enumerable: true,
get: createParserGetter('text')
})
/**
* URL-encoded parser.
* @public
*/
Object.defineProperty(exports, 'urlencoded', {
configurable: true,
enumerable: true,
get: createParserGetter('urlencoded')
})
/**
* Create a middleware to parse json and urlencoded bodies.
*
* @param {object} [options]
* @return {function}
* @deprecated
* @public
*/
function bodyParser (options) {
// use default type for parsers
var opts = Object.create(options || null, {
type: {
configurable: true,
enumerable: true,
value: undefined,
writable: true
}
})
var _urlencoded = exports.urlencoded(opts)
var _json = exports.json(opts)
return function bodyParser (req, res, next) {
_json(req, res, function (err) {
if (err) return next(err)
_urlencoded(req, res, next)
})
}
}
/**
* Create a getter for loading a parser.
* @private
*/
function createParserGetter (name) {
return function get () {
return loadParser(name)
}
}
/**
* Load a parser module.
* @private
*/
function loadParser (parserName) {
var parser = parsers[parserName]
if (parser !== undefined) {
return parser
}
// this uses a switch for static require analysis
switch (parserName) {
case 'json':
parser = require('./lib/types/json')
break
case 'raw':
parser = require('./lib/types/raw')
break
case 'text':
parser = require('./lib/types/text')
break
case 'urlencoded':
parser = require('./lib/types/urlencoded')
break
}
// store to prevent invoking require()
return (parsers[parserName] = parser)
}
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/*!
* body-parser
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var createError = require('http-errors')
var destroy = require('destroy')
var getBody = require('raw-body')
var iconv = require('iconv-lite')
var onFinished = require('on-finished')
var unpipe = require('unpipe')
var zlib = require('zlib')
/**
* Module exports.
*/
module.exports = read
/**
* Read a request into a buffer and parse.
*
* @param {object} req
* @param {object} res
* @param {function} next
* @param {function} parse
* @param {function} debug
* @param {object} options
* @private
*/
function read (req, res, next, parse, debug, options) {
var length
var opts = options
var stream
// flag as parsed
req._body = true
// read options
var encoding = opts.encoding !== null
? opts.encoding
: null
var verify = opts.verify
try {
// get the content stream
stream = contentstream(req, debug, opts.inflate)
length = stream.length
stream.length = undefined
} catch (err) {
return next(err)
}
// set raw-body options
opts.length = length
opts.encoding = verify
? null
: encoding
// assert charset is supported
if (opts.encoding === null && encoding !== null && !iconv.encodingExists(encoding)) {
return next(createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
charset: encoding.toLowerCase(),
type: 'charset.unsupported'
}))
}
// read body
debug('read body')
getBody(stream, opts, function (error, body) {
if (error) {
var _error
if (error.type === 'encoding.unsupported') {
// echo back charset
_error = createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
charset: encoding.toLowerCase(),
type: 'charset.unsupported'
})
} else {
// set status code on error
_error = createError(400, error)
}
// unpipe from stream and destroy
if (stream !== req) {
unpipe(req)
destroy(stream, true)
}
// read off entire request
dump(req, function onfinished () {
next(createError(400, _error))
})
return
}
// verify
if (verify) {
try {
debug('verify body')
verify(req, res, body, encoding)
} catch (err) {
next(createError(403, err, {
body: body,
type: err.type || 'entity.verify.failed'
}))
return
}
}
// parse
var str = body
try {
debug('parse body')
str = typeof body !== 'string' && encoding !== null
? iconv.decode(body, encoding)
: body
req.body = parse(str)
} catch (err) {
next(createError(400, err, {
body: str,
type: err.type || 'entity.parse.failed'
}))
return
}
next()
})
}
/**
* Get the content stream of the request.
*
* @param {object} req
* @param {function} debug
* @param {boolean} [inflate=true]
* @return {object}
* @api private
*/
function contentstream (req, debug, inflate) {
var encoding = (req.headers['content-encoding'] || 'identity').toLowerCase()
var length = req.headers['content-length']
var stream
debug('content-encoding "%s"', encoding)
if (inflate === false && encoding !== 'identity') {
throw createError(415, 'content encoding unsupported', {
encoding: encoding,
type: 'encoding.unsupported'
})
}
switch (encoding) {
case 'deflate':
stream = zlib.createInflate()
debug('inflate body')
req.pipe(stream)
break
case 'gzip':
stream = zlib.createGunzip()
debug('gunzip body')
req.pipe(stream)
break
case 'identity':
stream = req
stream.length = length
break
default:
throw createError(415, 'unsupported content encoding "' + encoding + '"', {
encoding: encoding,
type: 'encoding.unsupported'
})
}
return stream
}
/**
* Dump the contents of a request.
*
* @param {object} req
* @param {function} callback
* @api private
*/
function dump (req, callback) {
if (onFinished.isFinished(req)) {
callback(null)
} else {
onFinished(req, callback)
req.resume()
}
}
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/*!
* body-parser
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var bytes = require('bytes')
var contentType = require('content-type')
var createError = require('http-errors')
var debug = require('debug')('body-parser:json')
var read = require('../read')
var typeis = require('type-is')
/**
* Module exports.
*/
module.exports = json
/**
* RegExp to match the first non-space in a string.
*
* Allowed whitespace is defined in RFC 7159:
*
* ws = *(
* %x20 / ; Space
* %x09 / ; Horizontal tab
* %x0A / ; Line feed or New line
* %x0D ) ; Carriage return
*/
var FIRST_CHAR_REGEXP = /^[\x20\x09\x0a\x0d]*([^\x20\x09\x0a\x0d])/ // eslint-disable-line no-control-regex
var JSON_SYNTAX_CHAR = '#'
var JSON_SYNTAX_REGEXP = /#+/g
/**
* Create a middleware to parse JSON bodies.
*
* @param {object} [options]
* @return {function}
* @public
*/
function json (options) {
var opts = options || {}
var limit = typeof opts.limit !== 'number'
? bytes.parse(opts.limit || '100kb')
: opts.limit
var inflate = opts.inflate !== false
var reviver = opts.reviver
var strict = opts.strict !== false
var type = opts.type || 'application/json'
var verify = opts.verify || false
if (verify !== false && typeof verify !== 'function') {
throw new TypeError('option verify must be function')
}
// create the appropriate type checking function
var shouldParse = typeof type !== 'function'
? typeChecker(type)
: type
function parse (body) {
if (body.length === 0) {
// special-case empty json body, as it's a common client-side mistake
// TODO: maybe make this configurable or part of "strict" option
return {}
}
if (strict) {
var first = firstchar(body)
if (first !== '{' && first !== '[') {
debug('strict violation')
throw createStrictSyntaxError(body, first)
}
}
try {
debug('parse json')
return JSON.parse(body, reviver)
} catch (e) {
throw normalizeJsonSyntaxError(e, {
message: e.message,
stack: e.stack
})
}
}
return function jsonParser (req, res, next) {
if (req._body) {
debug('body already parsed')
next()
return
}
req.body = req.body || {}
// skip requests without bodies
if (!typeis.hasBody(req)) {
debug('skip empty body')
next()
return
}
debug('content-type %j', req.headers['content-type'])
// determine if request should be parsed
if (!shouldParse(req)) {
debug('skip parsing')
next()
return
}
// assert charset per RFC 7159 sec 8.1
var charset = getCharset(req) || 'utf-8'
if (charset.slice(0, 4) !== 'utf-') {
debug('invalid charset')
next(createError(415, 'unsupported charset "' + charset.toUpperCase() + '"', {
charset: charset,
type: 'charset.unsupported'
}))
return
}
// read
read(req, res, next, parse, debug, {
encoding: charset,
inflate: inflate,
limit: limit,
verify: verify
})
}
}
/**
* Create strict violation syntax error matching native error.
*
* @param {string} str
* @param {string} char
* @return {Error}
* @private
*/
function createStrictSyntaxError (str, char) {
var index = str.indexOf(char)
var partial = ''
if (index !== -1) {
partial = str.substring(0, index) + new Array(str.length - index + 1).join(JSON_SYNTAX_CHAR)
}
try {
JSON.parse(partial); /* istanbul ignore next */ throw new SyntaxError('strict violation')
} catch (e) {
return normalizeJsonSyntaxError(e, {
message: e.message.replace(JSON_SYNTAX_REGEXP, function (placeholder) {
return str.substring(index, index + placeholder.length)
}),
stack: e.stack
})
}
}
/**
* Get the first non-whitespace character in a string.
*
* @param {string} str
* @return {function}
* @private
*/
function firstchar (str) {
var match = FIRST_CHAR_REGEXP.exec(str)
return match
? match[1]
: undefined
}
/**
* Get the charset of a request.
*
* @param {object} req
* @api private
*/
function getCharset (req) {
try {
return (contentType.parse(req).parameters.charset || '').toLowerCase()
} catch (e) {
return undefined
}
}
/**
* Normalize a SyntaxError for JSON.parse.
*
* @param {SyntaxError} error
* @param {object} obj
* @return {SyntaxError}
*/
function normalizeJsonSyntaxError (error, obj) {
var keys = Object.getOwnPropertyNames(error)
for (var i = 0; i < keys.length; i++) {
var key = keys[i]
if (key !== 'stack' && key !== 'message') {
delete error[key]
}
}
// replace stack before message for Node.js 0.10 and below
error.stack = obj.stack.replace(error.message, obj.message)
error.message = obj.message
return error
}
/**
* Get the simple type checker.
*
* @param {string} type
* @return {function}
*/
function typeChecker (type) {
return function checkType (req) {
return Boolean(typeis(req, type))
}
}
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/*!
* body-parser
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
*/
var bytes = require('bytes')
var debug = require('debug')('body-parser:raw')
var read = require('../read')
var typeis = require('type-is')
/**
* Module exports.
*/
module.exports = raw
/**
* Create a middleware to parse raw bodies.
*
* @param {object} [options]
* @return {function}
* @api public
*/
function raw (options) {
var opts = options || {}
var inflate = opts.inflate !== false
var limit = typeof opts.limit !== 'number'
? bytes.parse(opts.limit || '100kb')
: opts.limit
var type = opts.type || 'application/octet-stream'
var verify = opts.verify || false
if (verify !== false && typeof verify !== 'function') {
throw new TypeError('option verify must be function')
}
// create the appropriate type checking function
var shouldParse = typeof type !== 'function'
? typeChecker(type)
: type
function parse (buf) {
return buf
}
return function rawParser (req, res, next) {
if (req._body) {
debug('body already parsed')
next()
return
}
req.body = req.body || {}
// skip requests without bodies
if (!typeis.hasBody(req)) {
debug('skip empty body')
next()
return
}
debug('content-type %j', req.headers['content-type'])
// determine if request should be parsed
if (!shouldParse(req)) {
debug('skip parsing')
next()
return
}
// read
read(req, res, next, parse, debug, {
encoding: null,
inflate: inflate,
limit: limit,
verify: verify
})
}
}
/**
* Get the simple type checker.
*
* @param {string} type
* @return {function}
*/
function typeChecker (type) {
return function checkType (req) {
return Boolean(typeis(req, type))
}
}
+121
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/*!
* body-parser
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
*/
var bytes = require('bytes')
var contentType = require('content-type')
var debug = require('debug')('body-parser:text')
var read = require('../read')
var typeis = require('type-is')
/**
* Module exports.
*/
module.exports = text
/**
* Create a middleware to parse text bodies.
*
* @param {object} [options]
* @return {function}
* @api public
*/
function text (options) {
var opts = options || {}
var defaultCharset = opts.defaultCharset || 'utf-8'
var inflate = opts.inflate !== false
var limit = typeof opts.limit !== 'number'
? bytes.parse(opts.limit || '100kb')
: opts.limit
var type = opts.type || 'text/plain'
var verify = opts.verify || false
if (verify !== false && typeof verify !== 'function') {
throw new TypeError('option verify must be function')
}
// create the appropriate type checking function
var shouldParse = typeof type !== 'function'
? typeChecker(type)
: type
function parse (buf) {
return buf
}
return function textParser (req, res, next) {
if (req._body) {
debug('body already parsed')
next()
return
}
req.body = req.body || {}
// skip requests without bodies
if (!typeis.hasBody(req)) {
debug('skip empty body')
next()
return
}
debug('content-type %j', req.headers['content-type'])
// determine if request should be parsed
if (!shouldParse(req)) {
debug('skip parsing')
next()
return
}
// get charset
var charset = getCharset(req) || defaultCharset
// read
read(req, res, next, parse, debug, {
encoding: charset,
inflate: inflate,
limit: limit,
verify: verify
})
}
}
/**
* Get the charset of a request.
*
* @param {object} req
* @api private
*/
function getCharset (req) {
try {
return (contentType.parse(req).parameters.charset || '').toLowerCase()
} catch (e) {
return undefined
}
}
/**
* Get the simple type checker.
*
* @param {string} type
* @return {function}
*/
function typeChecker (type) {
return function checkType (req) {
return Boolean(typeis(req, type))
}
}
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/*!
* body-parser
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var bytes = require('bytes')
var contentType = require('content-type')
var createError = require('http-errors')
var debug = require('debug')('body-parser:urlencoded')
var deprecate = require('depd')('body-parser')
var read = require('../read')
var typeis = require('type-is')
/**
* Module exports.
*/
module.exports = urlencoded
/**
* Cache of parser modules.
*/
var parsers = Object.create(null)
/**
* Create a middleware to parse urlencoded bodies.
*
* @param {object} [options]
* @return {function}
* @public
*/
function urlencoded (options) {
var opts = options || {}
// notice because option default will flip in next major
if (opts.extended === undefined) {
deprecate('undefined extended: provide extended option')
}
var extended = opts.extended !== false
var inflate = opts.inflate !== false
var limit = typeof opts.limit !== 'number'
? bytes.parse(opts.limit || '100kb')
: opts.limit
var type = opts.type || 'application/x-www-form-urlencoded'
var verify = opts.verify || false
if (verify !== false && typeof verify !== 'function') {
throw new TypeError('option verify must be function')
}
// create the appropriate query parser
var queryparse = extended
? extendedparser(opts)
: simpleparser(opts)
// create the appropriate type checking function
var shouldParse = typeof type !== 'function'
? typeChecker(type)
: type
function parse (body) {
return body.length
? queryparse(body)
: {}
}
return function urlencodedParser (req, res, next) {
if (req._body) {
debug('body already parsed')
next()
return
}
req.body = req.body || {}
// skip requests without bodies
if (!typeis.hasBody(req)) {
debug('skip empty body')
next()
return
}
debug('content-type %j', req.headers['content-type'])
// determine if request should be parsed
if (!shouldParse(req)) {
debug('skip parsing')
next()
return
}
// assert charset
var charset = getCharset(req) || 'utf-8'
if (charset !== 'utf-8') {
debug('invalid charset')
next(createError(415, 'unsupported charset "' + charset.toUpperCase() + '"', {
charset: charset,
type: 'charset.unsupported'
}))
return
}
// read
read(req, res, next, parse, debug, {
debug: debug,
encoding: charset,
inflate: inflate,
limit: limit,
verify: verify
})
}
}
/**
* Get the extended query parser.
*
* @param {object} options
*/
function extendedparser (options) {
var parameterLimit = options.parameterLimit !== undefined
? options.parameterLimit
: 1000
var depth = options.depth !== undefined ? options.depth : 32
var parse = parser('qs')
if (isNaN(parameterLimit) || parameterLimit < 1) {
throw new TypeError('option parameterLimit must be a positive number')
}
if (isNaN(depth) || depth < 0) {
throw new TypeError('option depth must be a zero or a positive number')
}
if (isFinite(parameterLimit)) {
parameterLimit = parameterLimit | 0
}
return function queryparse (body) {
var paramCount = parameterCount(body, parameterLimit)
if (paramCount === undefined) {
debug('too many parameters')
throw createError(413, 'too many parameters', {
type: 'parameters.too.many'
})
}
var arrayLimit = Math.max(100, paramCount)
debug('parse extended urlencoding')
try {
return parse(body, {
allowPrototypes: true,
arrayLimit: arrayLimit,
depth: depth,
strictDepth: true,
parameterLimit: parameterLimit
})
} catch (err) {
if (err instanceof RangeError) {
throw createError(400, 'The input exceeded the depth', {
type: 'querystring.parse.rangeError'
})
} else {
throw err
}
}
}
}
/**
* Get the charset of a request.
*
* @param {object} req
* @api private
*/
function getCharset (req) {
try {
return (contentType.parse(req).parameters.charset || '').toLowerCase()
} catch (e) {
return undefined
}
}
/**
* Count the number of parameters, stopping once limit reached
*
* @param {string} body
* @param {number} limit
* @api private
*/
function parameterCount (body, limit) {
var count = 0
var index = -1
do {
count++
if (count > limit) {
return undefined
}
index = body.indexOf('&', index + 1)
} while (index !== -1)
return count
}
/**
* Get parser for module name dynamically.
*
* @param {string} name
* @return {function}
* @api private
*/
function parser (name) {
var mod = parsers[name]
if (mod !== undefined) {
return mod.parse
}
// this uses a switch for static require analysis
switch (name) {
case 'qs':
mod = require('qs')
break
case 'querystring':
mod = require('querystring')
break
}
// store to prevent invoking require()
parsers[name] = mod
return mod.parse
}
/**
* Get the simple query parser.
*
* @param {object} options
*/
function simpleparser (options) {
var parameterLimit = options.parameterLimit !== undefined
? options.parameterLimit
: 1000
var parse = parser('querystring')
if (isNaN(parameterLimit) || parameterLimit < 1) {
throw new TypeError('option parameterLimit must be a positive number')
}
if (isFinite(parameterLimit)) {
parameterLimit = parameterLimit | 0
}
return function queryparse (body) {
var paramCount = parameterCount(body, parameterLimit)
if (paramCount === undefined) {
debug('too many parameters')
throw createError(413, 'too many parameters', {
type: 'parameters.too.many'
})
}
debug('parse urlencoding')
return parse(body, undefined, undefined, { maxKeys: parameterLimit })
}
}
/**
* Get the simple type checker.
*
* @param {string} type
* @return {function}
*/
function typeChecker (type) {
return function checkType (req) {
return Boolean(typeis(req, type))
}
}
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{
"name": "body-parser",
"description": "Node.js body parsing middleware",
"version": "1.20.5",
"contributors": [
"Douglas Christopher Wilson <doug@somethingdoug.com>",
"Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
],
"license": "MIT",
"repository": "expressjs/body-parser",
"dependencies": {
"bytes": "~3.1.2",
"content-type": "~1.0.5",
"debug": "2.6.9",
"depd": "2.0.0",
"destroy": "~1.2.0",
"http-errors": "~2.0.1",
"iconv-lite": "~0.4.24",
"on-finished": "~2.4.1",
"qs": "~6.15.1",
"raw-body": "~2.5.3",
"type-is": "~1.6.18",
"unpipe": "~1.0.0"
},
"devDependencies": {
"eslint": "8.34.0",
"eslint-config-standard": "14.1.1",
"eslint-plugin-import": "2.27.5",
"eslint-plugin-markdown": "3.0.0",
"eslint-plugin-node": "11.1.0",
"eslint-plugin-promise": "6.1.1",
"eslint-plugin-standard": "4.1.0",
"methods": "1.1.2",
"mocha": "10.2.0",
"nyc": "15.1.0",
"safe-buffer": "5.2.1",
"supertest": "6.3.3"
},
"files": [
"lib/",
"LICENSE",
"HISTORY.md",
"index.js"
],
"engines": {
"node": ">= 0.8",
"npm": "1.2.8000 || >= 1.4.16"
},
"scripts": {
"lint": "eslint .",
"test": "mocha --require test/support/env --reporter spec --check-leaks --bail test/",
"test-ci": "nyc --reporter=lcov --reporter=text npm test",
"test-cov": "nyc --reporter=html --reporter=text npm test"
}
}
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3.1.2 / 2022-01-27
==================
* Fix return value for un-parsable strings
3.1.1 / 2021-11-15
==================
* Fix "thousandsSeparator" incorrecting formatting fractional part
3.1.0 / 2019-01-22
==================
* Add petabyte (`pb`) support
3.0.0 / 2017-08-31
==================
* Change "kB" to "KB" in format output
* Remove support for Node.js 0.6
* Remove support for ComponentJS
2.5.0 / 2017-03-24
==================
* Add option "unit"
2.4.0 / 2016-06-01
==================
* Add option "unitSeparator"
2.3.0 / 2016-02-15
==================
* Drop partial bytes on all parsed units
* Fix non-finite numbers to `.format` to return `null`
* Fix parsing byte string that looks like hex
* perf: hoist regular expressions
2.2.0 / 2015-11-13
==================
* add option "decimalPlaces"
* add option "fixedDecimals"
2.1.0 / 2015-05-21
==================
* add `.format` export
* add `.parse` export
2.0.2 / 2015-05-20
==================
* remove map recreation
* remove unnecessary object construction
2.0.1 / 2015-05-07
==================
* fix browserify require
* remove node.extend dependency
2.0.0 / 2015-04-12
==================
* add option "case"
* add option "thousandsSeparator"
* return "null" on invalid parse input
* support proper round-trip: bytes(bytes(num)) === num
* units no longer case sensitive when parsing
1.0.0 / 2014-05-05
==================
* add negative support. fixes #6
0.3.0 / 2014-03-19
==================
* added terabyte support
0.2.1 / 2013-04-01
==================
* add .component
0.2.0 / 2012-10-28
==================
* bytes(200).should.eql('200b')
0.1.0 / 2012-07-04
==================
* add bytes to string conversion [yields]
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(The MIT License)
Copyright (c) 2012-2014 TJ Holowaychuk <tj@vision-media.ca>
Copyright (c) 2015 Jed Watson <jed.watson@me.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# Bytes utility
[![NPM Version][npm-image]][npm-url]
[![NPM Downloads][downloads-image]][downloads-url]
[![Build Status][ci-image]][ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
Utility to parse a string bytes (ex: `1TB`) to bytes (`1099511627776`) and vice-versa.
## Installation
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
```bash
$ npm install bytes
```
## Usage
```js
var bytes = require('bytes');
```
#### bytes(numberstring value, [options]): numberstringnull
Default export function. Delegates to either `bytes.format` or `bytes.parse` based on the type of `value`.
**Arguments**
| Name | Type | Description |
|---------|----------|--------------------|
| value | `number``string` | Number value to format or string value to parse |
| options | `Object` | Conversion options for `format` |
**Returns**
| Name | Type | Description |
|---------|------------------|-------------------------------------------------|
| results | `string``number``null` | Return null upon error. Numeric value in bytes, or string value otherwise. |
**Example**
```js
bytes(1024);
// output: '1KB'
bytes('1KB');
// output: 1024
```
#### bytes.format(number value, [options]): stringnull
Format the given value in bytes into a string. If the value is negative, it is kept as such. If it is a float, it is
rounded.
**Arguments**
| Name | Type | Description |
|---------|----------|--------------------|
| value | `number` | Value in bytes |
| options | `Object` | Conversion options |
**Options**
| Property | Type | Description |
|-------------------|--------|-----------------------------------------------------------------------------------------|
| decimalPlaces | `number``null` | Maximum number of decimal places to include in output. Default value to `2`. |
| fixedDecimals | `boolean``null` | Whether to always display the maximum number of decimal places. Default value to `false` |
| thousandsSeparator | `string``null` | Example of values: `' '`, `','` and `'.'`... Default value to `''`. |
| unit | `string``null` | The unit in which the result will be returned (B/KB/MB/GB/TB). Default value to `''` (which means auto detect). |
| unitSeparator | `string``null` | Separator to use between number and unit. Default value to `''`. |
**Returns**
| Name | Type | Description |
|---------|------------------|-------------------------------------------------|
| results | `string``null` | Return null upon error. String value otherwise. |
**Example**
```js
bytes.format(1024);
// output: '1KB'
bytes.format(1000);
// output: '1000B'
bytes.format(1000, {thousandsSeparator: ' '});
// output: '1 000B'
bytes.format(1024 * 1.7, {decimalPlaces: 0});
// output: '2KB'
bytes.format(1024, {unitSeparator: ' '});
// output: '1 KB'
```
#### bytes.parse(stringnumber value): numbernull
Parse the string value into an integer in bytes. If no unit is given, or `value`
is a number, it is assumed the value is in bytes.
Supported units and abbreviations are as follows and are case-insensitive:
* `b` for bytes
* `kb` for kilobytes
* `mb` for megabytes
* `gb` for gigabytes
* `tb` for terabytes
* `pb` for petabytes
The units are in powers of two, not ten. This means 1kb = 1024b according to this parser.
**Arguments**
| Name | Type | Description |
|---------------|--------|--------------------|
| value | `string``number` | String to parse, or number in bytes. |
**Returns**
| Name | Type | Description |
|---------|-------------|-------------------------|
| results | `number``null` | Return null upon error. Value in bytes otherwise. |
**Example**
```js
bytes.parse('1KB');
// output: 1024
bytes.parse('1024');
// output: 1024
bytes.parse(1024);
// output: 1024
```
## License
[MIT](LICENSE)
[ci-image]: https://badgen.net/github/checks/visionmedia/bytes.js/master?label=ci
[ci-url]: https://github.com/visionmedia/bytes.js/actions?query=workflow%3Aci
[coveralls-image]: https://badgen.net/coveralls/c/github/visionmedia/bytes.js/master
[coveralls-url]: https://coveralls.io/r/visionmedia/bytes.js?branch=master
[downloads-image]: https://badgen.net/npm/dm/bytes
[downloads-url]: https://npmjs.org/package/bytes
[npm-image]: https://badgen.net/npm/v/bytes
[npm-url]: https://npmjs.org/package/bytes
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/*!
* bytes
* Copyright(c) 2012-2014 TJ Holowaychuk
* Copyright(c) 2015 Jed Watson
* MIT Licensed
*/
'use strict';
/**
* Module exports.
* @public
*/
module.exports = bytes;
module.exports.format = format;
module.exports.parse = parse;
/**
* Module variables.
* @private
*/
var formatThousandsRegExp = /\B(?=(\d{3})+(?!\d))/g;
var formatDecimalsRegExp = /(?:\.0*|(\.[^0]+)0+)$/;
var map = {
b: 1,
kb: 1 << 10,
mb: 1 << 20,
gb: 1 << 30,
tb: Math.pow(1024, 4),
pb: Math.pow(1024, 5),
};
var parseRegExp = /^((-|\+)?(\d+(?:\.\d+)?)) *(kb|mb|gb|tb|pb)$/i;
/**
* Convert the given value in bytes into a string or parse to string to an integer in bytes.
*
* @param {string|number} value
* @param {{
* case: [string],
* decimalPlaces: [number]
* fixedDecimals: [boolean]
* thousandsSeparator: [string]
* unitSeparator: [string]
* }} [options] bytes options.
*
* @returns {string|number|null}
*/
function bytes(value, options) {
if (typeof value === 'string') {
return parse(value);
}
if (typeof value === 'number') {
return format(value, options);
}
return null;
}
/**
* Format the given value in bytes into a string.
*
* If the value is negative, it is kept as such. If it is a float,
* it is rounded.
*
* @param {number} value
* @param {object} [options]
* @param {number} [options.decimalPlaces=2]
* @param {number} [options.fixedDecimals=false]
* @param {string} [options.thousandsSeparator=]
* @param {string} [options.unit=]
* @param {string} [options.unitSeparator=]
*
* @returns {string|null}
* @public
*/
function format(value, options) {
if (!Number.isFinite(value)) {
return null;
}
var mag = Math.abs(value);
var thousandsSeparator = (options && options.thousandsSeparator) || '';
var unitSeparator = (options && options.unitSeparator) || '';
var decimalPlaces = (options && options.decimalPlaces !== undefined) ? options.decimalPlaces : 2;
var fixedDecimals = Boolean(options && options.fixedDecimals);
var unit = (options && options.unit) || '';
if (!unit || !map[unit.toLowerCase()]) {
if (mag >= map.pb) {
unit = 'PB';
} else if (mag >= map.tb) {
unit = 'TB';
} else if (mag >= map.gb) {
unit = 'GB';
} else if (mag >= map.mb) {
unit = 'MB';
} else if (mag >= map.kb) {
unit = 'KB';
} else {
unit = 'B';
}
}
var val = value / map[unit.toLowerCase()];
var str = val.toFixed(decimalPlaces);
if (!fixedDecimals) {
str = str.replace(formatDecimalsRegExp, '$1');
}
if (thousandsSeparator) {
str = str.split('.').map(function (s, i) {
return i === 0
? s.replace(formatThousandsRegExp, thousandsSeparator)
: s
}).join('.');
}
return str + unitSeparator + unit;
}
/**
* Parse the string value into an integer in bytes.
*
* If no unit is given, it is assumed the value is in bytes.
*
* @param {number|string} val
*
* @returns {number|null}
* @public
*/
function parse(val) {
if (typeof val === 'number' && !isNaN(val)) {
return val;
}
if (typeof val !== 'string') {
return null;
}
// Test if the string passed is valid
var results = parseRegExp.exec(val);
var floatValue;
var unit = 'b';
if (!results) {
// Nothing could be extracted from the given string
floatValue = parseInt(val, 10);
unit = 'b'
} else {
// Retrieve the value and the unit
floatValue = parseFloat(results[1]);
unit = results[4].toLowerCase();
}
if (isNaN(floatValue)) {
return null;
}
return Math.floor(map[unit] * floatValue);
}
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{
"name": "bytes",
"description": "Utility to parse a string bytes to bytes and vice-versa",
"version": "3.1.2",
"author": "TJ Holowaychuk <tj@vision-media.ca> (http://tjholowaychuk.com)",
"contributors": [
"Jed Watson <jed.watson@me.com>",
"Théo FIDRY <theo.fidry@gmail.com>"
],
"license": "MIT",
"keywords": [
"byte",
"bytes",
"utility",
"parse",
"parser",
"convert",
"converter"
],
"repository": "visionmedia/bytes.js",
"devDependencies": {
"eslint": "7.32.0",
"eslint-plugin-markdown": "2.2.1",
"mocha": "9.2.0",
"nyc": "15.1.0"
},
"files": [
"History.md",
"LICENSE",
"Readme.md",
"index.js"
],
"engines": {
"node": ">= 0.8"
},
"scripts": {
"lint": "eslint .",
"test": "mocha --check-leaks --reporter spec",
"test-ci": "nyc --reporter=lcov --reporter=text npm test",
"test-cov": "nyc --reporter=html --reporter=text npm test"
}
}
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{
"root": true,
"extends": "@ljharb",
"rules": {
"func-name-matching": 0,
"id-length": 0,
"new-cap": [2, {
"capIsNewExceptions": [
"GetIntrinsic",
],
}],
"no-extra-parens": 0,
"no-magic-numbers": 0,
},
}
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# These are supported funding model platforms
github: [ljharb]
patreon: # Replace with a single Patreon username
open_collective: # Replace with a single Open Collective username
ko_fi: # Replace with a single Ko-fi username
tidelift: npm/call-bind-apply-helpers
community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
liberapay: # Replace with a single Liberapay username
issuehunt: # Replace with a single IssueHunt username
otechie: # Replace with a single Otechie username
custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
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{
"all": true,
"check-coverage": false,
"reporter": ["text-summary", "text", "html", "json"],
"exclude": [
"coverage",
"test"
]
}
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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [v1.0.2](https://github.com/ljharb/call-bind-apply-helpers/compare/v1.0.1...v1.0.2) - 2025-02-12
### Commits
- [types] improve inferred types [`e6f9586`](https://github.com/ljharb/call-bind-apply-helpers/commit/e6f95860a3c72879cb861a858cdfb8138fbedec1)
- [Dev Deps] update `@arethetypeswrong/cli`, `@ljharb/tsconfig`, `@types/tape`, `es-value-fixtures`, `for-each`, `has-strict-mode`, `object-inspect` [`e43d540`](https://github.com/ljharb/call-bind-apply-helpers/commit/e43d5409f97543bfbb11f345d47d8ce4e066d8c1)
## [v1.0.1](https://github.com/ljharb/call-bind-apply-helpers/compare/v1.0.0...v1.0.1) - 2024-12-08
### Commits
- [types] `reflectApply`: fix types [`4efc396`](https://github.com/ljharb/call-bind-apply-helpers/commit/4efc3965351a4f02cc55e836fa391d3d11ef2ef8)
- [Fix] `reflectApply`: oops, Reflect is not a function [`83cc739`](https://github.com/ljharb/call-bind-apply-helpers/commit/83cc7395de6b79b7730bdf092f1436f0b1263c75)
- [Dev Deps] update `@arethetypeswrong/cli` [`80bd5d3`](https://github.com/ljharb/call-bind-apply-helpers/commit/80bd5d3ae58b4f6b6995ce439dd5a1bcb178a940)
## v1.0.0 - 2024-12-05
### Commits
- Initial implementation, tests, readme [`7879629`](https://github.com/ljharb/call-bind-apply-helpers/commit/78796290f9b7430c9934d6f33d94ae9bc89fce04)
- Initial commit [`3f1dc16`](https://github.com/ljharb/call-bind-apply-helpers/commit/3f1dc164afc43285631b114a5f9dd9137b2b952f)
- npm init [`081df04`](https://github.com/ljharb/call-bind-apply-helpers/commit/081df048c312fcee400922026f6e97281200a603)
- Only apps should have lockfiles [`5b9ca0f`](https://github.com/ljharb/call-bind-apply-helpers/commit/5b9ca0fe8101ebfaf309c549caac4e0a017ed930)
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MIT License
Copyright (c) 2024 Jordan Harband
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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# call-bind-apply-helpers <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
[![github actions][actions-image]][actions-url]
[![coverage][codecov-image]][codecov-url]
[![dependency status][deps-svg]][deps-url]
[![dev dependency status][dev-deps-svg]][dev-deps-url]
[![License][license-image]][license-url]
[![Downloads][downloads-image]][downloads-url]
[![npm badge][npm-badge-png]][package-url]
Helper functions around Function call/apply/bind, for use in `call-bind`.
The only packages that should likely ever use this package directly are `call-bind` and `get-intrinsic`.
Please use `call-bind` unless you have a very good reason not to.
## Getting started
```sh
npm install --save call-bind-apply-helpers
```
## Usage/Examples
```js
const assert = require('assert');
const callBindBasic = require('call-bind-apply-helpers');
function f(a, b) {
assert.equal(this, 1);
assert.equal(a, 2);
assert.equal(b, 3);
assert.equal(arguments.length, 2);
}
const fBound = callBindBasic([f, 1]);
delete Function.prototype.call;
delete Function.prototype.bind;
fBound(2, 3);
```
## Tests
Clone the repo, `npm install`, and run `npm test`
[package-url]: https://npmjs.org/package/call-bind-apply-helpers
[npm-version-svg]: https://versionbadg.es/ljharb/call-bind-apply-helpers.svg
[deps-svg]: https://david-dm.org/ljharb/call-bind-apply-helpers.svg
[deps-url]: https://david-dm.org/ljharb/call-bind-apply-helpers
[dev-deps-svg]: https://david-dm.org/ljharb/call-bind-apply-helpers/dev-status.svg
[dev-deps-url]: https://david-dm.org/ljharb/call-bind-apply-helpers#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/call-bind-apply-helpers.png?downloads=true&stars=true
[license-image]: https://img.shields.io/npm/l/call-bind-apply-helpers.svg
[license-url]: LICENSE
[downloads-image]: https://img.shields.io/npm/dm/call-bind-apply-helpers.svg
[downloads-url]: https://npm-stat.com/charts.html?package=call-bind-apply-helpers
[codecov-image]: https://codecov.io/gh/ljharb/call-bind-apply-helpers/branch/main/graphs/badge.svg
[codecov-url]: https://app.codecov.io/gh/ljharb/call-bind-apply-helpers/
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/call-bind-apply-helpers
[actions-url]: https://github.com/ljharb/call-bind-apply-helpers/actions
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export = Reflect.apply;
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'use strict';
var bind = require('function-bind');
var $apply = require('./functionApply');
var $call = require('./functionCall');
var $reflectApply = require('./reflectApply');
/** @type {import('./actualApply')} */
module.exports = $reflectApply || bind.call($call, $apply);
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import actualApply from './actualApply';
type TupleSplitHead<T extends any[], N extends number> = T['length'] extends N
? T
: T extends [...infer R, any]
? TupleSplitHead<R, N>
: never
type TupleSplitTail<T, N extends number, O extends any[] = []> = O['length'] extends N
? T
: T extends [infer F, ...infer R]
? TupleSplitTail<[...R], N, [...O, F]>
: never
type TupleSplit<T extends any[], N extends number> = [TupleSplitHead<T, N>, TupleSplitTail<T, N>]
declare function applyBind(...args: TupleSplit<Parameters<typeof actualApply>, 2>[1]): ReturnType<typeof actualApply>;
export = applyBind;
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'use strict';
var bind = require('function-bind');
var $apply = require('./functionApply');
var actualApply = require('./actualApply');
/** @type {import('./applyBind')} */
module.exports = function applyBind() {
return actualApply(bind, $apply, arguments);
};
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export = Function.prototype.apply;
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@@ -0,0 +1,4 @@
'use strict';
/** @type {import('./functionApply')} */
module.exports = Function.prototype.apply;
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@@ -0,0 +1 @@
export = Function.prototype.call;
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'use strict';
/** @type {import('./functionCall')} */
module.exports = Function.prototype.call;
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type RemoveFromTuple<
Tuple extends readonly unknown[],
RemoveCount extends number,
Index extends 1[] = []
> = Index["length"] extends RemoveCount
? Tuple
: Tuple extends [infer First, ...infer Rest]
? RemoveFromTuple<Rest, RemoveCount, [...Index, 1]>
: Tuple;
type ConcatTuples<
Prefix extends readonly unknown[],
Suffix extends readonly unknown[]
> = [...Prefix, ...Suffix];
type ExtractFunctionParams<T> = T extends (this: infer TThis, ...args: infer P extends readonly unknown[]) => infer R
? { thisArg: TThis; params: P; returnType: R }
: never;
type BindFunction<
T extends (this: any, ...args: any[]) => any,
TThis,
TBoundArgs extends readonly unknown[],
ReceiverBound extends boolean
> = ExtractFunctionParams<T> extends {
thisArg: infer OrigThis;
params: infer P extends readonly unknown[];
returnType: infer R;
}
? ReceiverBound extends true
? (...args: RemoveFromTuple<P, Extract<TBoundArgs["length"], number>>) => R extends [OrigThis, ...infer Rest]
? [TThis, ...Rest] // Replace `this` with `thisArg`
: R
: <U, RemainingArgs extends RemoveFromTuple<P, Extract<TBoundArgs["length"], number>>>(
thisArg: U,
...args: RemainingArgs
) => R extends [OrigThis, ...infer Rest]
? [U, ...ConcatTuples<TBoundArgs, Rest>] // Preserve bound args in return type
: R
: never;
declare function callBind<
const T extends (this: any, ...args: any[]) => any,
Extracted extends ExtractFunctionParams<T>,
const TBoundArgs extends Partial<Extracted["params"]> & readonly unknown[],
const TThis extends Extracted["thisArg"]
>(
args: [fn: T, thisArg: TThis, ...boundArgs: TBoundArgs]
): BindFunction<T, TThis, TBoundArgs, true>;
declare function callBind<
const T extends (this: any, ...args: any[]) => any,
Extracted extends ExtractFunctionParams<T>,
const TBoundArgs extends Partial<Extracted["params"]> & readonly unknown[]
>(
args: [fn: T, ...boundArgs: TBoundArgs]
): BindFunction<T, Extracted["thisArg"], TBoundArgs, false>;
declare function callBind<const TArgs extends readonly unknown[]>(
args: [fn: Exclude<TArgs[0], Function>, ...rest: TArgs]
): never;
// export as namespace callBind;
export = callBind;
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'use strict';
var bind = require('function-bind');
var $TypeError = require('es-errors/type');
var $call = require('./functionCall');
var $actualApply = require('./actualApply');
/** @type {(args: [Function, thisArg?: unknown, ...args: unknown[]]) => Function} TODO FIXME, find a way to use import('.') */
module.exports = function callBindBasic(args) {
if (args.length < 1 || typeof args[0] !== 'function') {
throw new $TypeError('a function is required');
}
return $actualApply(bind, $call, args);
};
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{
"name": "call-bind-apply-helpers",
"version": "1.0.2",
"description": "Helper functions around Function call/apply/bind, for use in `call-bind`",
"main": "index.js",
"exports": {
".": "./index.js",
"./actualApply": "./actualApply.js",
"./applyBind": "./applyBind.js",
"./functionApply": "./functionApply.js",
"./functionCall": "./functionCall.js",
"./reflectApply": "./reflectApply.js",
"./package.json": "./package.json"
},
"scripts": {
"prepack": "npmignore --auto --commentLines=auto",
"prepublish": "not-in-publish || npm run prepublishOnly",
"prepublishOnly": "safe-publish-latest",
"prelint": "evalmd README.md",
"lint": "eslint --ext=.js,.mjs .",
"postlint": "tsc -p . && attw -P",
"pretest": "npm run lint",
"tests-only": "nyc tape 'test/**/*.js'",
"test": "npm run tests-only",
"posttest": "npx npm@'>=10.2' audit --production",
"version": "auto-changelog && git add CHANGELOG.md",
"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
},
"repository": {
"type": "git",
"url": "git+https://github.com/ljharb/call-bind-apply-helpers.git"
},
"author": "Jordan Harband <ljharb@gmail.com>",
"license": "MIT",
"bugs": {
"url": "https://github.com/ljharb/call-bind-apply-helpers/issues"
},
"homepage": "https://github.com/ljharb/call-bind-apply-helpers#readme",
"dependencies": {
"es-errors": "^1.3.0",
"function-bind": "^1.1.2"
},
"devDependencies": {
"@arethetypeswrong/cli": "^0.17.3",
"@ljharb/eslint-config": "^21.1.1",
"@ljharb/tsconfig": "^0.2.3",
"@types/for-each": "^0.3.3",
"@types/function-bind": "^1.1.10",
"@types/object-inspect": "^1.13.0",
"@types/tape": "^5.8.1",
"auto-changelog": "^2.5.0",
"encoding": "^0.1.13",
"es-value-fixtures": "^1.7.1",
"eslint": "=8.8.0",
"evalmd": "^0.0.19",
"for-each": "^0.3.5",
"has-strict-mode": "^1.1.0",
"in-publish": "^2.0.1",
"npmignore": "^0.3.1",
"nyc": "^10.3.2",
"object-inspect": "^1.13.4",
"safe-publish-latest": "^2.0.0",
"tape": "^5.9.0",
"typescript": "next"
},
"testling": {
"files": "test/index.js"
},
"auto-changelog": {
"output": "CHANGELOG.md",
"template": "keepachangelog",
"unreleased": false,
"commitLimit": false,
"backfillLimit": false,
"hideCredit": true
},
"publishConfig": {
"ignore": [
".github/workflows"
]
},
"engines": {
"node": ">= 0.4"
}
}
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declare const reflectApply: false | typeof Reflect.apply;
export = reflectApply;
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'use strict';
/** @type {import('./reflectApply')} */
module.exports = typeof Reflect !== 'undefined' && Reflect && Reflect.apply;
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'use strict';
var callBind = require('../');
var hasStrictMode = require('has-strict-mode')();
var forEach = require('for-each');
var inspect = require('object-inspect');
var v = require('es-value-fixtures');
var test = require('tape');
test('callBindBasic', function (t) {
forEach(v.nonFunctions, function (nonFunction) {
t['throws'](
// @ts-expect-error
function () { callBind([nonFunction]); },
TypeError,
inspect(nonFunction) + ' is not a function'
);
});
var sentinel = { sentinel: true };
/** @type {<T, A extends number, B extends number>(this: T, a: A, b: B) => [T | undefined, A, B]} */
var func = function (a, b) {
// eslint-disable-next-line no-invalid-this
return [!hasStrictMode && this === global ? undefined : this, a, b];
};
t.equal(func.length, 2, 'original function length is 2');
/** type {(thisArg: unknown, a: number, b: number) => [unknown, number, number]} */
var bound = callBind([func]);
/** type {((a: number, b: number) => [typeof sentinel, typeof a, typeof b])} */
var boundR = callBind([func, sentinel]);
/** type {((b: number) => [typeof sentinel, number, typeof b])} */
var boundArg = callBind([func, sentinel, /** @type {const} */ (1)]);
// @ts-expect-error
t.deepEqual(bound(), [undefined, undefined, undefined], 'bound func with no args');
// @ts-expect-error
t.deepEqual(func(), [undefined, undefined, undefined], 'unbound func with too few args');
// @ts-expect-error
t.deepEqual(bound(1, 2), [hasStrictMode ? 1 : Object(1), 2, undefined], 'bound func too few args');
// @ts-expect-error
t.deepEqual(boundR(), [sentinel, undefined, undefined], 'bound func with receiver, with too few args');
// @ts-expect-error
t.deepEqual(boundArg(), [sentinel, 1, undefined], 'bound func with receiver and arg, with too few args');
t.deepEqual(func(1, 2), [undefined, 1, 2], 'unbound func with right args');
t.deepEqual(bound(1, 2, 3), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with right args');
t.deepEqual(boundR(1, 2), [sentinel, 1, 2], 'bound func with receiver, with right args');
t.deepEqual(boundArg(2), [sentinel, 1, 2], 'bound func with receiver and arg, with right arg');
// @ts-expect-error
t.deepEqual(func(1, 2, 3), [undefined, 1, 2], 'unbound func with too many args');
// @ts-expect-error
t.deepEqual(bound(1, 2, 3, 4), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with too many args');
// @ts-expect-error
t.deepEqual(boundR(1, 2, 3), [sentinel, 1, 2], 'bound func with receiver, with too many args');
// @ts-expect-error
t.deepEqual(boundArg(2, 3), [sentinel, 1, 2], 'bound func with receiver and arg, with too many args');
t.end();
});
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{
"extends": "@ljharb/tsconfig",
"compilerOptions": {
"target": "es2021",
},
"exclude": [
"coverage",
],
}
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{
"root": true,
"extends": "@ljharb",
"rules": {
"new-cap": [2, {
"capIsNewExceptions": [
"GetIntrinsic",
],
}],
},
}
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# These are supported funding model platforms
github: [ljharb]
patreon: # Replace with a single Patreon username
open_collective: # Replace with a single Open Collective username
ko_fi: # Replace with a single Ko-fi username
tidelift: npm/call-bound
community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
liberapay: # Replace with a single Liberapay username
issuehunt: # Replace with a single IssueHunt username
otechie: # Replace with a single Otechie username
custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
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{
"all": true,
"check-coverage": false,
"reporter": ["text-summary", "text", "html", "json"],
"exclude": [
"coverage",
"test"
]
}
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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [v1.0.4](https://github.com/ljharb/call-bound/compare/v1.0.3...v1.0.4) - 2025-03-03
### Commits
- [types] improve types [`e648922`](https://github.com/ljharb/call-bound/commit/e6489222a9e54f350fbf952ceabe51fd8b6027ff)
- [Dev Deps] update `@arethetypeswrong/cli`, `@ljharb/tsconfig`, `@types/tape`, `es-value-fixtures`, `for-each`, `has-strict-mode`, `object-inspect` [`a42a5eb`](https://github.com/ljharb/call-bound/commit/a42a5ebe6c1b54fcdc7997c7dc64fdca9e936719)
- [Deps] update `call-bind-apply-helpers`, `get-intrinsic` [`f529eac`](https://github.com/ljharb/call-bound/commit/f529eac132404c17156bbc23ab2297a25d0f20b8)
## [v1.0.3](https://github.com/ljharb/call-bound/compare/v1.0.2...v1.0.3) - 2024-12-15
### Commits
- [Refactor] use `call-bind-apply-helpers` instead of `call-bind` [`5e0b134`](https://github.com/ljharb/call-bound/commit/5e0b13496df14fb7d05dae9412f088da8d3f75be)
- [Deps] update `get-intrinsic` [`41fc967`](https://github.com/ljharb/call-bound/commit/41fc96732a22c7b7e8f381f93ccc54bb6293be2e)
- [readme] fix example [`79a0137`](https://github.com/ljharb/call-bound/commit/79a0137723f7c6d09c9c05452bbf8d5efb5d6e49)
- [meta] add `sideEffects` flag [`08b07be`](https://github.com/ljharb/call-bound/commit/08b07be7f1c03f67dc6f3cdaf0906259771859f7)
## [v1.0.2](https://github.com/ljharb/call-bound/compare/v1.0.1...v1.0.2) - 2024-12-10
### Commits
- [Dev Deps] update `@arethetypeswrong/cli`, `@ljharb/tsconfig`, `gopd` [`e6a5ffe`](https://github.com/ljharb/call-bound/commit/e6a5ffe849368fe4f74dfd6cdeca1b9baa39e8d5)
- [Deps] update `call-bind`, `get-intrinsic` [`2aeb5b5`](https://github.com/ljharb/call-bound/commit/2aeb5b521dc2b2683d1345c753ea1161de2d1c14)
- [types] improve return type [`1a0c9fe`](https://github.com/ljharb/call-bound/commit/1a0c9fe3114471e7ca1f57d104e2efe713bb4871)
## v1.0.1 - 2024-12-05
### Commits
- Initial implementation, tests, readme, types [`6d94121`](https://github.com/ljharb/call-bound/commit/6d94121a9243602e506334069f7a03189fe3363d)
- Initial commit [`0eae867`](https://github.com/ljharb/call-bound/commit/0eae867334ea025c33e6e91cdecfc9df96680cf9)
- npm init [`71b2479`](https://github.com/ljharb/call-bound/commit/71b2479c6723e0b7d91a6b663613067e98b7b275)
- Only apps should have lockfiles [`c3754a9`](https://github.com/ljharb/call-bound/commit/c3754a949b7f9132b47e2d18c1729889736741eb)
- [actions] skip `npm ls` in node &lt; 10 [`74275a5`](https://github.com/ljharb/call-bound/commit/74275a5186b8caf6309b6b97472bdcb0df4683a8)
- [Dev Deps] add missing peer dep [`1354de8`](https://github.com/ljharb/call-bound/commit/1354de8679413e4ae9c523d85f76fa7a5e032d97)
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MIT License
Copyright (c) 2024 Jordan Harband
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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# call-bound <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
[![github actions][actions-image]][actions-url]
[![coverage][codecov-image]][codecov-url]
[![dependency status][deps-svg]][deps-url]
[![dev dependency status][dev-deps-svg]][dev-deps-url]
[![License][license-image]][license-url]
[![Downloads][downloads-image]][downloads-url]
[![npm badge][npm-badge-png]][package-url]
Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.
## Getting started
```sh
npm install --save call-bound
```
## Usage/Examples
```js
const assert = require('assert');
const callBound = require('call-bound');
const slice = callBound('Array.prototype.slice');
delete Function.prototype.call;
delete Function.prototype.bind;
delete Array.prototype.slice;
assert.deepEqual(slice([1, 2, 3, 4], 1, -1), [2, 3]);
```
## Tests
Clone the repo, `npm install`, and run `npm test`
[package-url]: https://npmjs.org/package/call-bound
[npm-version-svg]: https://versionbadg.es/ljharb/call-bound.svg
[deps-svg]: https://david-dm.org/ljharb/call-bound.svg
[deps-url]: https://david-dm.org/ljharb/call-bound
[dev-deps-svg]: https://david-dm.org/ljharb/call-bound/dev-status.svg
[dev-deps-url]: https://david-dm.org/ljharb/call-bound#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/call-bound.png?downloads=true&stars=true
[license-image]: https://img.shields.io/npm/l/call-bound.svg
[license-url]: LICENSE
[downloads-image]: https://img.shields.io/npm/dm/call-bound.svg
[downloads-url]: https://npm-stat.com/charts.html?package=call-bound
[codecov-image]: https://codecov.io/gh/ljharb/call-bound/branch/main/graphs/badge.svg
[codecov-url]: https://app.codecov.io/gh/ljharb/call-bound/
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/call-bound
[actions-url]: https://github.com/ljharb/call-bound/actions
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type Intrinsic = typeof globalThis;
type IntrinsicName = keyof Intrinsic | `%${keyof Intrinsic}%`;
type IntrinsicPath = IntrinsicName | `${StripPercents<IntrinsicName>}.${string}` | `%${StripPercents<IntrinsicName>}.${string}%`;
type AllowMissing = boolean;
type StripPercents<T extends string> = T extends `%${infer U}%` ? U : T;
type BindMethodPrecise<F> =
F extends (this: infer This, ...args: infer Args) => infer R
? (obj: This, ...args: Args) => R
: F extends {
(this: infer This1, ...args: infer Args1): infer R1;
(this: infer This2, ...args: infer Args2): infer R2
}
? {
(obj: This1, ...args: Args1): R1;
(obj: This2, ...args: Args2): R2
}
: never
// Extract method type from a prototype
type GetPrototypeMethod<T extends keyof typeof globalThis, M extends string> =
(typeof globalThis)[T] extends { prototype: any }
? M extends keyof (typeof globalThis)[T]['prototype']
? (typeof globalThis)[T]['prototype'][M]
: never
: never
// Get static property/method
type GetStaticMember<T extends keyof typeof globalThis, P extends string> =
P extends keyof (typeof globalThis)[T] ? (typeof globalThis)[T][P] : never
// Type that maps string path to actual bound function or value with better precision
type BoundIntrinsic<S extends string> =
S extends `${infer Obj}.prototype.${infer Method}`
? Obj extends keyof typeof globalThis
? BindMethodPrecise<GetPrototypeMethod<Obj, Method & string>>
: unknown
: S extends `${infer Obj}.${infer Prop}`
? Obj extends keyof typeof globalThis
? GetStaticMember<Obj, Prop & string>
: unknown
: unknown
declare function arraySlice<T>(array: readonly T[], start?: number, end?: number): T[];
declare function arraySlice<T>(array: ArrayLike<T>, start?: number, end?: number): T[];
declare function arraySlice<T>(array: IArguments, start?: number, end?: number): T[];
// Special cases for methods that need explicit typing
interface SpecialCases {
'%Object.prototype.isPrototypeOf%': (thisArg: {}, obj: unknown) => boolean;
'%String.prototype.replace%': {
(str: string, searchValue: string | RegExp, replaceValue: string): string;
(str: string, searchValue: string | RegExp, replacer: (substring: string, ...args: any[]) => string): string
};
'%Object.prototype.toString%': (obj: {}) => string;
'%Object.prototype.hasOwnProperty%': (obj: {}, v: PropertyKey) => boolean;
'%Array.prototype.slice%': typeof arraySlice;
'%Array.prototype.map%': <T, U>(array: readonly T[], callbackfn: (value: T, index: number, array: readonly T[]) => U, thisArg?: any) => U[];
'%Array.prototype.filter%': <T>(array: readonly T[], predicate: (value: T, index: number, array: readonly T[]) => unknown, thisArg?: any) => T[];
'%Array.prototype.indexOf%': <T>(array: readonly T[], searchElement: T, fromIndex?: number) => number;
'%Function.prototype.apply%': <T, A extends any[], R>(fn: (...args: A) => R, thisArg: any, args: A) => R;
'%Function.prototype.call%': <T, A extends any[], R>(fn: (...args: A) => R, thisArg: any, ...args: A) => R;
'%Function.prototype.bind%': <T, A extends any[], R>(fn: (...args: A) => R, thisArg: any, ...args: A) => (...remainingArgs: A) => R;
'%Promise.prototype.then%': {
<T, R>(promise: Promise<T>, onfulfilled: (value: T) => R | PromiseLike<R>): Promise<R>;
<T, R>(promise: Promise<T>, onfulfilled: ((value: T) => R | PromiseLike<R>) | undefined | null, onrejected: (reason: any) => R | PromiseLike<R>): Promise<R>;
};
'%RegExp.prototype.test%': (regexp: RegExp, str: string) => boolean;
'%RegExp.prototype.exec%': (regexp: RegExp, str: string) => RegExpExecArray | null;
'%Error.prototype.toString%': (error: Error) => string;
'%TypeError.prototype.toString%': (error: TypeError) => string;
'%String.prototype.split%': (
obj: unknown,
splitter: string | RegExp | {
[Symbol.split](string: string, limit?: number): string[];
},
limit?: number | undefined
) => string[];
}
/**
* Returns a bound function for a prototype method, or a value for a static property.
*
* @param name - The name of the intrinsic (e.g. 'Array.prototype.slice')
* @param {AllowMissing} [allowMissing] - Whether to allow missing intrinsics (default: false)
*/
declare function callBound<K extends keyof SpecialCases | StripPercents<keyof SpecialCases>, S extends IntrinsicPath>(name: K, allowMissing?: AllowMissing): SpecialCases[`%${StripPercents<K>}%`];
declare function callBound<K extends keyof SpecialCases | StripPercents<keyof SpecialCases>, S extends IntrinsicPath>(name: S, allowMissing?: AllowMissing): BoundIntrinsic<S>;
export = callBound;
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'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBindBasic = require('call-bind-apply-helpers');
/** @type {(thisArg: string, searchString: string, position?: number) => number} */
var $indexOf = callBindBasic([GetIntrinsic('%String.prototype.indexOf%')]);
/** @type {import('.')} */
module.exports = function callBoundIntrinsic(name, allowMissing) {
/* eslint no-extra-parens: 0 */
var intrinsic = /** @type {(this: unknown, ...args: unknown[]) => unknown} */ (GetIntrinsic(name, !!allowMissing));
if (typeof intrinsic === 'function' && $indexOf(name, '.prototype.') > -1) {
return callBindBasic(/** @type {const} */ ([intrinsic]));
}
return intrinsic;
};
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{
"name": "call-bound",
"version": "1.0.4",
"description": "Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.",
"main": "index.js",
"exports": {
".": "./index.js",
"./package.json": "./package.json"
},
"sideEffects": false,
"scripts": {
"prepack": "npmignore --auto --commentLines=auto",
"prepublish": "not-in-publish || npm run prepublishOnly",
"prepublishOnly": "safe-publish-latest",
"prelint": "evalmd README.md",
"lint": "eslint --ext=.js,.mjs .",
"postlint": "tsc -p . && attw -P",
"pretest": "npm run lint",
"tests-only": "nyc tape 'test/**/*.js'",
"test": "npm run tests-only",
"posttest": "npx npm@'>=10.2' audit --production",
"version": "auto-changelog && git add CHANGELOG.md",
"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
},
"repository": {
"type": "git",
"url": "git+https://github.com/ljharb/call-bound.git"
},
"keywords": [
"javascript",
"ecmascript",
"es",
"js",
"callbind",
"callbound",
"call",
"bind",
"bound",
"call-bind",
"call-bound",
"function",
"es-abstract"
],
"author": "Jordan Harband <ljharb@gmail.com>",
"funding": {
"url": "https://github.com/sponsors/ljharb"
},
"license": "MIT",
"bugs": {
"url": "https://github.com/ljharb/call-bound/issues"
},
"homepage": "https://github.com/ljharb/call-bound#readme",
"dependencies": {
"call-bind-apply-helpers": "^1.0.2",
"get-intrinsic": "^1.3.0"
},
"devDependencies": {
"@arethetypeswrong/cli": "^0.17.4",
"@ljharb/eslint-config": "^21.1.1",
"@ljharb/tsconfig": "^0.3.0",
"@types/call-bind": "^1.0.5",
"@types/get-intrinsic": "^1.2.3",
"@types/tape": "^5.8.1",
"auto-changelog": "^2.5.0",
"encoding": "^0.1.13",
"es-value-fixtures": "^1.7.1",
"eslint": "=8.8.0",
"evalmd": "^0.0.19",
"for-each": "^0.3.5",
"gopd": "^1.2.0",
"has-strict-mode": "^1.1.0",
"in-publish": "^2.0.1",
"npmignore": "^0.3.1",
"nyc": "^10.3.2",
"object-inspect": "^1.13.4",
"safe-publish-latest": "^2.0.0",
"tape": "^5.9.0",
"typescript": "next"
},
"testling": {
"files": "test/index.js"
},
"auto-changelog": {
"output": "CHANGELOG.md",
"template": "keepachangelog",
"unreleased": false,
"commitLimit": false,
"backfillLimit": false,
"hideCredit": true
},
"publishConfig": {
"ignore": [
".github/workflows"
]
},
"engines": {
"node": ">= 0.4"
}
}
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'use strict';
var test = require('tape');
var callBound = require('../');
/** @template {true} T @template U @typedef {T extends U ? T : never} AssertType */
test('callBound', function (t) {
// static primitive
t.equal(callBound('Array.length'), Array.length, 'Array.length yields itself');
t.equal(callBound('%Array.length%'), Array.length, '%Array.length% yields itself');
// static non-function object
t.equal(callBound('Array.prototype'), Array.prototype, 'Array.prototype yields itself');
t.equal(callBound('%Array.prototype%'), Array.prototype, '%Array.prototype% yields itself');
t.equal(callBound('Array.constructor'), Array.constructor, 'Array.constructor yields itself');
t.equal(callBound('%Array.constructor%'), Array.constructor, '%Array.constructor% yields itself');
// static function
t.equal(callBound('Date.parse'), Date.parse, 'Date.parse yields itself');
t.equal(callBound('%Date.parse%'), Date.parse, '%Date.parse% yields itself');
// prototype primitive
t.equal(callBound('Error.prototype.message'), Error.prototype.message, 'Error.prototype.message yields itself');
t.equal(callBound('%Error.prototype.message%'), Error.prototype.message, '%Error.prototype.message% yields itself');
var x = callBound('Object.prototype.toString');
var y = callBound('%Object.prototype.toString%');
// prototype function
t.notEqual(x, Object.prototype.toString, 'Object.prototype.toString does not yield itself');
t.notEqual(y, Object.prototype.toString, '%Object.prototype.toString% does not yield itself');
t.equal(x(true), Object.prototype.toString.call(true), 'call-bound Object.prototype.toString calls into the original');
t.equal(y(true), Object.prototype.toString.call(true), 'call-bound %Object.prototype.toString% calls into the original');
t['throws'](
// @ts-expect-error
function () { callBound('does not exist'); },
SyntaxError,
'nonexistent intrinsic throws'
);
t['throws'](
// @ts-expect-error
function () { callBound('does not exist', true); },
SyntaxError,
'allowMissing arg still throws for unknown intrinsic'
);
t.test('real but absent intrinsic', { skip: typeof WeakRef !== 'undefined' }, function (st) {
st['throws'](
function () { callBound('WeakRef'); },
TypeError,
'real but absent intrinsic throws'
);
st.equal(callBound('WeakRef', true), undefined, 'allowMissing arg avoids exception');
st.end();
});
t.end();
});
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{
"extends": "@ljharb/tsconfig",
"compilerOptions": {
"target": "ESNext",
"lib": ["es2024"],
},
"exclude": [
"coverage",
],
}
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The MIT License (MIT)
Copyright (c) 2012 Paul Miller (https://paulmillr.com), Elan Shanker
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the “Software”), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
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# Chokidar [![Weekly downloads](https://img.shields.io/npm/dw/chokidar.svg)](https://github.com/paulmillr/chokidar)
> Minimal and efficient cross-platform file watching library
## Why?
There are many reasons to prefer Chokidar to raw fs.watch / fs.watchFile in 2024:
- Events are properly reported
- macOS events report filenames
- events are not reported twice
- changes are reported as add / change / unlink instead of useless `rename`
- Atomic writes are supported, using `atomic` option
- Some file editors use them
- Chunked writes are supported, using `awaitWriteFinish` option
- Large files are commonly written in chunks
- File / dir filtering is supported
- Symbolic links are supported
- Recursive watching is always supported, instead of partial when using raw events
- Includes a way to limit recursion depth
Chokidar relies on the Node.js core `fs` module, but when using
`fs.watch` and `fs.watchFile` for watching, it normalizes the events it
receives, often checking for truth by getting file stats and/or dir contents.
The `fs.watch`-based implementation is the default, which
avoids polling and keeps CPU usage down. Be advised that chokidar will initiate
watchers recursively for everything within scope of the paths that have been
specified, so be judicious about not wasting system resources by watching much
more than needed. For some cases, `fs.watchFile`, which utilizes polling and uses more resources, is used.
Made for [Brunch](https://brunch.io/) in 2012,
it is now used in [~30 million repositories](https://www.npmjs.com/browse/depended/chokidar) and
has proven itself in production environments.
**Sep 2024 update:** v4 is out! It decreases dependency count from 13 to 1, removes
support for globs, adds support for ESM / Common.js modules, and bumps minimum node.js version from v8 to v14.
Check out [upgrading](#upgrading).
## Getting started
Install with npm:
```sh
npm install chokidar
```
Use it in your code:
```javascript
import chokidar from 'chokidar';
// One-liner for current directory
chokidar.watch('.').on('all', (event, path) => {
console.log(event, path);
});
// Extended options
// ----------------
// Initialize watcher.
const watcher = chokidar.watch('file, dir, or array', {
ignored: (path, stats) => stats?.isFile() && !path.endsWith('.js'), // only watch js files
persistent: true
});
// Something to use when events are received.
const log = console.log.bind(console);
// Add event listeners.
watcher
.on('add', path => log(`File ${path} has been added`))
.on('change', path => log(`File ${path} has been changed`))
.on('unlink', path => log(`File ${path} has been removed`));
// More possible events.
watcher
.on('addDir', path => log(`Directory ${path} has been added`))
.on('unlinkDir', path => log(`Directory ${path} has been removed`))
.on('error', error => log(`Watcher error: ${error}`))
.on('ready', () => log('Initial scan complete. Ready for changes'))
.on('raw', (event, path, details) => { // internal
log('Raw event info:', event, path, details);
});
// 'add', 'addDir' and 'change' events also receive stat() results as second
// argument when available: https://nodejs.org/api/fs.html#fs_class_fs_stats
watcher.on('change', (path, stats) => {
if (stats) console.log(`File ${path} changed size to ${stats.size}`);
});
// Watch new files.
watcher.add('new-file');
watcher.add(['new-file-2', 'new-file-3']);
// Get list of actual paths being watched on the filesystem
let watchedPaths = watcher.getWatched();
// Un-watch some files.
await watcher.unwatch('new-file');
// Stop watching. The method is async!
await watcher.close().then(() => console.log('closed'));
// Full list of options. See below for descriptions.
// Do not use this example!
chokidar.watch('file', {
persistent: true,
// ignore .txt files
ignored: (file) => file.endsWith('.txt'),
// watch only .txt files
// ignored: (file, _stats) => _stats?.isFile() && !file.endsWith('.txt'),
awaitWriteFinish: true, // emit single event when chunked writes are completed
atomic: true, // emit proper events when "atomic writes" (mv _tmp file) are used
// The options also allow specifying custom intervals in ms
// awaitWriteFinish: {
// stabilityThreshold: 2000,
// pollInterval: 100
// },
// atomic: 100,
interval: 100,
binaryInterval: 300,
cwd: '.',
depth: 99,
followSymlinks: true,
ignoreInitial: false,
ignorePermissionErrors: false,
usePolling: false,
alwaysStat: false,
});
```
`chokidar.watch(paths, [options])`
* `paths` (string or array of strings). Paths to files, dirs to be watched
recursively.
* `options` (object) Options object as defined below:
#### Persistence
* `persistent` (default: `true`). Indicates whether the process
should continue to run as long as files are being watched.
#### Path filtering
* `ignored` function, regex, or path. Defines files/paths to be ignored.
The whole relative or absolute path is tested, not just filename. If a function with two arguments
is provided, it gets called twice per path - once with a single argument (the path), second
time with two arguments (the path and the
[`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats)
object of that path).
* `ignoreInitial` (default: `false`). If set to `false` then `add`/`addDir` events are also emitted for matching paths while
instantiating the watching as chokidar discovers these file paths (before the `ready` event).
* `followSymlinks` (default: `true`). When `false`, only the
symlinks themselves will be watched for changes instead of following
the link references and bubbling events through the link's path.
* `cwd` (no default). The base directory from which watch `paths` are to be
derived. Paths emitted with events will be relative to this.
#### Performance
* `usePolling` (default: `false`).
Whether to use fs.watchFile (backed by polling), or fs.watch. If polling
leads to high CPU utilization, consider setting this to `false`. It is
typically necessary to **set this to `true` to successfully watch files over
a network**, and it may be necessary to successfully watch files in other
non-standard situations. Setting to `true` explicitly on MacOS overrides the
`useFsEvents` default. You may also set the CHOKIDAR_USEPOLLING env variable
to true (1) or false (0) in order to override this option.
* _Polling-specific settings_ (effective when `usePolling: true`)
* `interval` (default: `100`). Interval of file system polling, in milliseconds. You may also
set the CHOKIDAR_INTERVAL env variable to override this option.
* `binaryInterval` (default: `300`). Interval of file system
polling for binary files.
([see list of binary extensions](https://github.com/sindresorhus/binary-extensions/blob/master/binary-extensions.json))
* `alwaysStat` (default: `false`). If relying upon the
[`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats)
object that may get passed with `add`, `addDir`, and `change` events, set
this to `true` to ensure it is provided even in cases where it wasn't
already available from the underlying watch events.
* `depth` (default: `undefined`). If set, limits how many levels of
subdirectories will be traversed.
* `awaitWriteFinish` (default: `false`).
By default, the `add` event will fire when a file first appears on disk, before
the entire file has been written. Furthermore, in some cases some `change`
events will be emitted while the file is being written. In some cases,
especially when watching for large files there will be a need to wait for the
write operation to finish before responding to a file creation or modification.
Setting `awaitWriteFinish` to `true` (or a truthy value) will poll file size,
holding its `add` and `change` events until the size does not change for a
configurable amount of time. The appropriate duration setting is heavily
dependent on the OS and hardware. For accurate detection this parameter should
be relatively high, making file watching much less responsive.
Use with caution.
* *`options.awaitWriteFinish` can be set to an object in order to adjust
timing params:*
* `awaitWriteFinish.stabilityThreshold` (default: 2000). Amount of time in
milliseconds for a file size to remain constant before emitting its event.
* `awaitWriteFinish.pollInterval` (default: 100). File size polling interval, in milliseconds.
#### Errors
* `ignorePermissionErrors` (default: `false`). Indicates whether to watch files
that don't have read permissions if possible. If watching fails due to `EPERM`
or `EACCES` with this set to `true`, the errors will be suppressed silently.
* `atomic` (default: `true` if `useFsEvents` and `usePolling` are `false`).
Automatically filters out artifacts that occur when using editors that use
"atomic writes" instead of writing directly to the source file. If a file is
re-added within 100 ms of being deleted, Chokidar emits a `change` event
rather than `unlink` then `add`. If the default of 100 ms does not work well
for you, you can override it by setting `atomic` to a custom value, in
milliseconds.
### Methods & Events
`chokidar.watch()` produces an instance of `FSWatcher`. Methods of `FSWatcher`:
* `.add(path / paths)`: Add files, directories for tracking.
Takes an array of strings or just one string.
* `.on(event, callback)`: Listen for an FS event.
Available events: `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `ready`,
`raw`, `error`.
Additionally `all` is available which gets emitted with the underlying event
name and path for every event other than `ready`, `raw`, and `error`. `raw` is internal, use it carefully.
* `.unwatch(path / paths)`: Stop watching files or directories.
Takes an array of strings or just one string.
* `.close()`: **async** Removes all listeners from watched files. Asynchronous, returns Promise. Use with `await` to ensure bugs don't happen.
* `.getWatched()`: Returns an object representing all the paths on the file
system being watched by this `FSWatcher` instance. The object's keys are all the
directories (using absolute paths unless the `cwd` option was used), and the
values are arrays of the names of the items contained in each directory.
### CLI
Check out third party [chokidar-cli](https://github.com/open-cli-tools/chokidar-cli),
which allows to execute a command on each change, or get a stdio stream of change events.
## Troubleshooting
Sometimes, Chokidar runs out of file handles, causing `EMFILE` and `ENOSP` errors:
* `bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell`
* `Error: watch /home/ ENOSPC`
There are two things that can cause it.
1. Exhausted file handles for generic fs operations
- Can be solved by using [graceful-fs](https://www.npmjs.com/package/graceful-fs),
which can monkey-patch native `fs` module used by chokidar: `let fs = require('fs'); let grfs = require('graceful-fs'); grfs.gracefulify(fs);`
- Can also be solved by tuning OS: `echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p`.
2. Exhausted file handles for `fs.watch`
- Can't seem to be solved by graceful-fs or OS tuning
- It's possible to start using `usePolling: true`, which will switch backend to resource-intensive `fs.watchFile`
All fsevents-related issues (`WARN optional dep failed`, `fsevents is not a constructor`) are solved by upgrading to v4+.
## Changelog
- **v4 (Sep 2024):** remove glob support and bundled fsevents. Decrease dependency count from 13 to 1. Rewrite in typescript. Bumps minimum node.js requirement to v14+
- **v3 (Apr 2019):** massive CPU & RAM consumption improvements; reduces deps / package size by a factor of 17x and bumps Node.js requirement to v8.16+.
- **v2 (Dec 2017):** globs are now posix-style-only. Tons of bugfixes.
- **v1 (Apr 2015):** glob support, symlink support, tons of bugfixes. Node 0.8+ is supported
- **v0.1 (Apr 2012):** Initial release, extracted from [Brunch](https://github.com/brunch/brunch/blob/9847a065aea300da99bd0753f90354cde9de1261/src/helpers.coffee#L66)
### Upgrading
If you've used globs before and want do replicate the functionality with v4:
```js
// v3
chok.watch('**/*.js');
chok.watch("./directory/**/*");
// v4
chok.watch('.', {
ignored: (path, stats) => stats?.isFile() && !path.endsWith('.js'), // only watch js files
});
chok.watch('./directory');
// other way
import { glob } from 'node:fs/promises';
const watcher = watch(await Array.fromAsync(glob('**/*.js')));
// unwatching
// v3
chok.unwatch('**/*.js');
// v4
chok.unwatch(await glob('**/*.js'));
```
## Also
Why was chokidar named this way? What's the meaning behind it?
>Chowkidar is a transliteration of a Hindi word meaning 'watchman, gatekeeper', चौकीदार. This ultimately comes from Sanskrit _ चतुष्क_ (crossway, quadrangle, consisting-of-four). This word is also used in other languages like Urdu as (چوکیدار) which is widely used in Pakistan and India.
## License
MIT (c) Paul Miller (<https://paulmillr.com>), see [LICENSE](LICENSE) file.
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import type { WatchEventType, Stats, FSWatcher as NativeFsWatcher } from 'fs';
import type { FSWatcher, WatchHelper, Throttler } from './index.js';
import type { EntryInfo } from 'readdirp';
export type Path = string;
export declare const STR_DATA = "data";
export declare const STR_END = "end";
export declare const STR_CLOSE = "close";
export declare const EMPTY_FN: () => void;
export declare const IDENTITY_FN: (val: unknown) => unknown;
export declare const isWindows: boolean;
export declare const isMacos: boolean;
export declare const isLinux: boolean;
export declare const isFreeBSD: boolean;
export declare const isIBMi: boolean;
export declare const EVENTS: {
readonly ALL: "all";
readonly READY: "ready";
readonly ADD: "add";
readonly CHANGE: "change";
readonly ADD_DIR: "addDir";
readonly UNLINK: "unlink";
readonly UNLINK_DIR: "unlinkDir";
readonly RAW: "raw";
readonly ERROR: "error";
};
export type EventName = (typeof EVENTS)[keyof typeof EVENTS];
export type FsWatchContainer = {
listeners: (path: string) => void | Set<any>;
errHandlers: (err: unknown) => void | Set<any>;
rawEmitters: (ev: WatchEventType, path: string, opts: unknown) => void | Set<any>;
watcher: NativeFsWatcher;
watcherUnusable?: boolean;
};
export interface WatchHandlers {
listener: (path: string) => void;
errHandler: (err: unknown) => void;
rawEmitter: (ev: WatchEventType, path: string, opts: unknown) => void;
}
/**
* @mixin
*/
export declare class NodeFsHandler {
fsw: FSWatcher;
_boundHandleError: (error: unknown) => void;
constructor(fsW: FSWatcher);
/**
* Watch file for changes with fs_watchFile or fs_watch.
* @param path to file or dir
* @param listener on fs change
* @returns closer for the watcher instance
*/
_watchWithNodeFs(path: string, listener: (path: string, newStats?: any) => void | Promise<void>): (() => void) | undefined;
/**
* Watch a file and emit add event if warranted.
* @returns closer for the watcher instance
*/
_handleFile(file: Path, stats: Stats, initialAdd: boolean): (() => void) | undefined;
/**
* Handle symlinks encountered while reading a dir.
* @param entry returned by readdirp
* @param directory path of dir being read
* @param path of this item
* @param item basename of this item
* @returns true if no more processing is needed for this entry.
*/
_handleSymlink(entry: EntryInfo, directory: string, path: Path, item: string): Promise<boolean | undefined>;
_handleRead(directory: string, initialAdd: boolean, wh: WatchHelper, target: Path, dir: Path, depth: number, throttler: Throttler): Promise<unknown> | undefined;
/**
* Read directory to add / remove files from `@watched` list and re-read it on change.
* @param dir fs path
* @param stats
* @param initialAdd
* @param depth relative to user-supplied path
* @param target child path targeted for watch
* @param wh Common watch helpers for this path
* @param realpath
* @returns closer for the watcher instance.
*/
_handleDir(dir: string, stats: Stats, initialAdd: boolean, depth: number, target: string, wh: WatchHelper, realpath: string): Promise<(() => void) | undefined>;
/**
* Handle added file, directory, or glob pattern.
* Delegates call to _handleFile / _handleDir after checks.
* @param path to file or ir
* @param initialAdd was the file added at watch instantiation?
* @param priorWh depth relative to user-supplied path
* @param depth Child path actually targeted for watch
* @param target Child path actually targeted for watch
*/
_addToNodeFs(path: string, initialAdd: boolean, priorWh: WatchHelper | undefined, depth: number, target?: string): Promise<string | false | undefined>;
}
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import { watchFile, unwatchFile, watch as fs_watch } from 'fs';
import { open, stat, lstat, realpath as fsrealpath } from 'fs/promises';
import * as sysPath from 'path';
import { type as osType } from 'os';
export const STR_DATA = 'data';
export const STR_END = 'end';
export const STR_CLOSE = 'close';
export const EMPTY_FN = () => { };
export const IDENTITY_FN = (val) => val;
const pl = process.platform;
export const isWindows = pl === 'win32';
export const isMacos = pl === 'darwin';
export const isLinux = pl === 'linux';
export const isFreeBSD = pl === 'freebsd';
export const isIBMi = osType() === 'OS400';
export const EVENTS = {
ALL: 'all',
READY: 'ready',
ADD: 'add',
CHANGE: 'change',
ADD_DIR: 'addDir',
UNLINK: 'unlink',
UNLINK_DIR: 'unlinkDir',
RAW: 'raw',
ERROR: 'error',
};
const EV = EVENTS;
const THROTTLE_MODE_WATCH = 'watch';
const statMethods = { lstat, stat };
const KEY_LISTENERS = 'listeners';
const KEY_ERR = 'errHandlers';
const KEY_RAW = 'rawEmitters';
const HANDLER_KEYS = [KEY_LISTENERS, KEY_ERR, KEY_RAW];
// prettier-ignore
const binaryExtensions = new Set([
'3dm', '3ds', '3g2', '3gp', '7z', 'a', 'aac', 'adp', 'afdesign', 'afphoto', 'afpub', 'ai',
'aif', 'aiff', 'alz', 'ape', 'apk', 'appimage', 'ar', 'arj', 'asf', 'au', 'avi',
'bak', 'baml', 'bh', 'bin', 'bk', 'bmp', 'btif', 'bz2', 'bzip2',
'cab', 'caf', 'cgm', 'class', 'cmx', 'cpio', 'cr2', 'cur', 'dat', 'dcm', 'deb', 'dex', 'djvu',
'dll', 'dmg', 'dng', 'doc', 'docm', 'docx', 'dot', 'dotm', 'dra', 'DS_Store', 'dsk', 'dts',
'dtshd', 'dvb', 'dwg', 'dxf',
'ecelp4800', 'ecelp7470', 'ecelp9600', 'egg', 'eol', 'eot', 'epub', 'exe',
'f4v', 'fbs', 'fh', 'fla', 'flac', 'flatpak', 'fli', 'flv', 'fpx', 'fst', 'fvt',
'g3', 'gh', 'gif', 'graffle', 'gz', 'gzip',
'h261', 'h263', 'h264', 'icns', 'ico', 'ief', 'img', 'ipa', 'iso',
'jar', 'jpeg', 'jpg', 'jpgv', 'jpm', 'jxr', 'key', 'ktx',
'lha', 'lib', 'lvp', 'lz', 'lzh', 'lzma', 'lzo',
'm3u', 'm4a', 'm4v', 'mar', 'mdi', 'mht', 'mid', 'midi', 'mj2', 'mka', 'mkv', 'mmr', 'mng',
'mobi', 'mov', 'movie', 'mp3',
'mp4', 'mp4a', 'mpeg', 'mpg', 'mpga', 'mxu',
'nef', 'npx', 'numbers', 'nupkg',
'o', 'odp', 'ods', 'odt', 'oga', 'ogg', 'ogv', 'otf', 'ott',
'pages', 'pbm', 'pcx', 'pdb', 'pdf', 'pea', 'pgm', 'pic', 'png', 'pnm', 'pot', 'potm',
'potx', 'ppa', 'ppam',
'ppm', 'pps', 'ppsm', 'ppsx', 'ppt', 'pptm', 'pptx', 'psd', 'pya', 'pyc', 'pyo', 'pyv',
'qt',
'rar', 'ras', 'raw', 'resources', 'rgb', 'rip', 'rlc', 'rmf', 'rmvb', 'rpm', 'rtf', 'rz',
's3m', 's7z', 'scpt', 'sgi', 'shar', 'snap', 'sil', 'sketch', 'slk', 'smv', 'snk', 'so',
'stl', 'suo', 'sub', 'swf',
'tar', 'tbz', 'tbz2', 'tga', 'tgz', 'thmx', 'tif', 'tiff', 'tlz', 'ttc', 'ttf', 'txz',
'udf', 'uvh', 'uvi', 'uvm', 'uvp', 'uvs', 'uvu',
'viv', 'vob',
'war', 'wav', 'wax', 'wbmp', 'wdp', 'weba', 'webm', 'webp', 'whl', 'wim', 'wm', 'wma',
'wmv', 'wmx', 'woff', 'woff2', 'wrm', 'wvx',
'xbm', 'xif', 'xla', 'xlam', 'xls', 'xlsb', 'xlsm', 'xlsx', 'xlt', 'xltm', 'xltx', 'xm',
'xmind', 'xpi', 'xpm', 'xwd', 'xz',
'z', 'zip', 'zipx',
]);
const isBinaryPath = (filePath) => binaryExtensions.has(sysPath.extname(filePath).slice(1).toLowerCase());
// TODO: emit errors properly. Example: EMFILE on Macos.
const foreach = (val, fn) => {
if (val instanceof Set) {
val.forEach(fn);
}
else {
fn(val);
}
};
const addAndConvert = (main, prop, item) => {
let container = main[prop];
if (!(container instanceof Set)) {
main[prop] = container = new Set([container]);
}
container.add(item);
};
const clearItem = (cont) => (key) => {
const set = cont[key];
if (set instanceof Set) {
set.clear();
}
else {
delete cont[key];
}
};
const delFromSet = (main, prop, item) => {
const container = main[prop];
if (container instanceof Set) {
container.delete(item);
}
else if (container === item) {
delete main[prop];
}
};
const isEmptySet = (val) => (val instanceof Set ? val.size === 0 : !val);
const FsWatchInstances = new Map();
/**
* Instantiates the fs_watch interface
* @param path to be watched
* @param options to be passed to fs_watch
* @param listener main event handler
* @param errHandler emits info about errors
* @param emitRaw emits raw event data
* @returns {NativeFsWatcher}
*/
function createFsWatchInstance(path, options, listener, errHandler, emitRaw) {
const handleEvent = (rawEvent, evPath) => {
listener(path);
emitRaw(rawEvent, evPath, { watchedPath: path });
// emit based on events occurring for files from a directory's watcher in
// case the file's watcher misses it (and rely on throttling to de-dupe)
if (evPath && path !== evPath) {
fsWatchBroadcast(sysPath.resolve(path, evPath), KEY_LISTENERS, sysPath.join(path, evPath));
}
};
try {
return fs_watch(path, {
persistent: options.persistent,
}, handleEvent);
}
catch (error) {
errHandler(error);
return undefined;
}
}
/**
* Helper for passing fs_watch event data to a collection of listeners
* @param fullPath absolute path bound to fs_watch instance
*/
const fsWatchBroadcast = (fullPath, listenerType, val1, val2, val3) => {
const cont = FsWatchInstances.get(fullPath);
if (!cont)
return;
foreach(cont[listenerType], (listener) => {
listener(val1, val2, val3);
});
};
/**
* Instantiates the fs_watch interface or binds listeners
* to an existing one covering the same file system entry
* @param path
* @param fullPath absolute path
* @param options to be passed to fs_watch
* @param handlers container for event listener functions
*/
const setFsWatchListener = (path, fullPath, options, handlers) => {
const { listener, errHandler, rawEmitter } = handlers;
let cont = FsWatchInstances.get(fullPath);
let watcher;
if (!options.persistent) {
watcher = createFsWatchInstance(path, options, listener, errHandler, rawEmitter);
if (!watcher)
return;
return watcher.close.bind(watcher);
}
if (cont) {
addAndConvert(cont, KEY_LISTENERS, listener);
addAndConvert(cont, KEY_ERR, errHandler);
addAndConvert(cont, KEY_RAW, rawEmitter);
}
else {
watcher = createFsWatchInstance(path, options, fsWatchBroadcast.bind(null, fullPath, KEY_LISTENERS), errHandler, // no need to use broadcast here
fsWatchBroadcast.bind(null, fullPath, KEY_RAW));
if (!watcher)
return;
watcher.on(EV.ERROR, async (error) => {
const broadcastErr = fsWatchBroadcast.bind(null, fullPath, KEY_ERR);
if (cont)
cont.watcherUnusable = true; // documented since Node 10.4.1
// Workaround for https://github.com/joyent/node/issues/4337
if (isWindows && error.code === 'EPERM') {
try {
const fd = await open(path, 'r');
await fd.close();
broadcastErr(error);
}
catch (err) {
// do nothing
}
}
else {
broadcastErr(error);
}
});
cont = {
listeners: listener,
errHandlers: errHandler,
rawEmitters: rawEmitter,
watcher,
};
FsWatchInstances.set(fullPath, cont);
}
// const index = cont.listeners.indexOf(listener);
// removes this instance's listeners and closes the underlying fs_watch
// instance if there are no more listeners left
return () => {
delFromSet(cont, KEY_LISTENERS, listener);
delFromSet(cont, KEY_ERR, errHandler);
delFromSet(cont, KEY_RAW, rawEmitter);
if (isEmptySet(cont.listeners)) {
// Check to protect against issue gh-730.
// if (cont.watcherUnusable) {
cont.watcher.close();
// }
FsWatchInstances.delete(fullPath);
HANDLER_KEYS.forEach(clearItem(cont));
// @ts-ignore
cont.watcher = undefined;
Object.freeze(cont);
}
};
};
// fs_watchFile helpers
// object to hold per-process fs_watchFile instances
// (may be shared across chokidar FSWatcher instances)
const FsWatchFileInstances = new Map();
/**
* Instantiates the fs_watchFile interface or binds listeners
* to an existing one covering the same file system entry
* @param path to be watched
* @param fullPath absolute path
* @param options options to be passed to fs_watchFile
* @param handlers container for event listener functions
* @returns closer
*/
const setFsWatchFileListener = (path, fullPath, options, handlers) => {
const { listener, rawEmitter } = handlers;
let cont = FsWatchFileInstances.get(fullPath);
// let listeners = new Set();
// let rawEmitters = new Set();
const copts = cont && cont.options;
if (copts && (copts.persistent < options.persistent || copts.interval > options.interval)) {
// "Upgrade" the watcher to persistence or a quicker interval.
// This creates some unlikely edge case issues if the user mixes
// settings in a very weird way, but solving for those cases
// doesn't seem worthwhile for the added complexity.
// listeners = cont.listeners;
// rawEmitters = cont.rawEmitters;
unwatchFile(fullPath);
cont = undefined;
}
if (cont) {
addAndConvert(cont, KEY_LISTENERS, listener);
addAndConvert(cont, KEY_RAW, rawEmitter);
}
else {
// TODO
// listeners.add(listener);
// rawEmitters.add(rawEmitter);
cont = {
listeners: listener,
rawEmitters: rawEmitter,
options,
watcher: watchFile(fullPath, options, (curr, prev) => {
foreach(cont.rawEmitters, (rawEmitter) => {
rawEmitter(EV.CHANGE, fullPath, { curr, prev });
});
const currmtime = curr.mtimeMs;
if (curr.size !== prev.size || currmtime > prev.mtimeMs || currmtime === 0) {
foreach(cont.listeners, (listener) => listener(path, curr));
}
}),
};
FsWatchFileInstances.set(fullPath, cont);
}
// const index = cont.listeners.indexOf(listener);
// Removes this instance's listeners and closes the underlying fs_watchFile
// instance if there are no more listeners left.
return () => {
delFromSet(cont, KEY_LISTENERS, listener);
delFromSet(cont, KEY_RAW, rawEmitter);
if (isEmptySet(cont.listeners)) {
FsWatchFileInstances.delete(fullPath);
unwatchFile(fullPath);
cont.options = cont.watcher = undefined;
Object.freeze(cont);
}
};
};
/**
* @mixin
*/
export class NodeFsHandler {
constructor(fsW) {
this.fsw = fsW;
this._boundHandleError = (error) => fsW._handleError(error);
}
/**
* Watch file for changes with fs_watchFile or fs_watch.
* @param path to file or dir
* @param listener on fs change
* @returns closer for the watcher instance
*/
_watchWithNodeFs(path, listener) {
const opts = this.fsw.options;
const directory = sysPath.dirname(path);
const basename = sysPath.basename(path);
const parent = this.fsw._getWatchedDir(directory);
parent.add(basename);
const absolutePath = sysPath.resolve(path);
const options = {
persistent: opts.persistent,
};
if (!listener)
listener = EMPTY_FN;
let closer;
if (opts.usePolling) {
const enableBin = opts.interval !== opts.binaryInterval;
options.interval = enableBin && isBinaryPath(basename) ? opts.binaryInterval : opts.interval;
closer = setFsWatchFileListener(path, absolutePath, options, {
listener,
rawEmitter: this.fsw._emitRaw,
});
}
else {
closer = setFsWatchListener(path, absolutePath, options, {
listener,
errHandler: this._boundHandleError,
rawEmitter: this.fsw._emitRaw,
});
}
return closer;
}
/**
* Watch a file and emit add event if warranted.
* @returns closer for the watcher instance
*/
_handleFile(file, stats, initialAdd) {
if (this.fsw.closed) {
return;
}
const dirname = sysPath.dirname(file);
const basename = sysPath.basename(file);
const parent = this.fsw._getWatchedDir(dirname);
// stats is always present
let prevStats = stats;
// if the file is already being watched, do nothing
if (parent.has(basename))
return;
const listener = async (path, newStats) => {
if (!this.fsw._throttle(THROTTLE_MODE_WATCH, file, 5))
return;
if (!newStats || newStats.mtimeMs === 0) {
try {
const newStats = await stat(file);
if (this.fsw.closed)
return;
// Check that change event was not fired because of changed only accessTime.
const at = newStats.atimeMs;
const mt = newStats.mtimeMs;
if (!at || at <= mt || mt !== prevStats.mtimeMs) {
this.fsw._emit(EV.CHANGE, file, newStats);
}
if ((isMacos || isLinux || isFreeBSD) && prevStats.ino !== newStats.ino) {
this.fsw._closeFile(path);
prevStats = newStats;
const closer = this._watchWithNodeFs(file, listener);
if (closer)
this.fsw._addPathCloser(path, closer);
}
else {
prevStats = newStats;
}
}
catch (error) {
// Fix issues where mtime is null but file is still present
this.fsw._remove(dirname, basename);
}
// add is about to be emitted if file not already tracked in parent
}
else if (parent.has(basename)) {
// Check that change event was not fired because of changed only accessTime.
const at = newStats.atimeMs;
const mt = newStats.mtimeMs;
if (!at || at <= mt || mt !== prevStats.mtimeMs) {
this.fsw._emit(EV.CHANGE, file, newStats);
}
prevStats = newStats;
}
};
// kick off the watcher
const closer = this._watchWithNodeFs(file, listener);
// emit an add event if we're supposed to
if (!(initialAdd && this.fsw.options.ignoreInitial) && this.fsw._isntIgnored(file)) {
if (!this.fsw._throttle(EV.ADD, file, 0))
return;
this.fsw._emit(EV.ADD, file, stats);
}
return closer;
}
/**
* Handle symlinks encountered while reading a dir.
* @param entry returned by readdirp
* @param directory path of dir being read
* @param path of this item
* @param item basename of this item
* @returns true if no more processing is needed for this entry.
*/
async _handleSymlink(entry, directory, path, item) {
if (this.fsw.closed) {
return;
}
const full = entry.fullPath;
const dir = this.fsw._getWatchedDir(directory);
if (!this.fsw.options.followSymlinks) {
// watch symlink directly (don't follow) and detect changes
this.fsw._incrReadyCount();
let linkPath;
try {
linkPath = await fsrealpath(path);
}
catch (e) {
this.fsw._emitReady();
return true;
}
if (this.fsw.closed)
return;
if (dir.has(item)) {
if (this.fsw._symlinkPaths.get(full) !== linkPath) {
this.fsw._symlinkPaths.set(full, linkPath);
this.fsw._emit(EV.CHANGE, path, entry.stats);
}
}
else {
dir.add(item);
this.fsw._symlinkPaths.set(full, linkPath);
this.fsw._emit(EV.ADD, path, entry.stats);
}
this.fsw._emitReady();
return true;
}
// don't follow the same symlink more than once
if (this.fsw._symlinkPaths.has(full)) {
return true;
}
this.fsw._symlinkPaths.set(full, true);
}
_handleRead(directory, initialAdd, wh, target, dir, depth, throttler) {
// Normalize the directory name on Windows
directory = sysPath.join(directory, '');
throttler = this.fsw._throttle('readdir', directory, 1000);
if (!throttler)
return;
const previous = this.fsw._getWatchedDir(wh.path);
const current = new Set();
let stream = this.fsw._readdirp(directory, {
fileFilter: (entry) => wh.filterPath(entry),
directoryFilter: (entry) => wh.filterDir(entry),
});
if (!stream)
return;
stream
.on(STR_DATA, async (entry) => {
if (this.fsw.closed) {
stream = undefined;
return;
}
const item = entry.path;
let path = sysPath.join(directory, item);
current.add(item);
if (entry.stats.isSymbolicLink() &&
(await this._handleSymlink(entry, directory, path, item))) {
return;
}
if (this.fsw.closed) {
stream = undefined;
return;
}
// Files that present in current directory snapshot
// but absent in previous are added to watch list and
// emit `add` event.
if (item === target || (!target && !previous.has(item))) {
this.fsw._incrReadyCount();
// ensure relativeness of path is preserved in case of watcher reuse
path = sysPath.join(dir, sysPath.relative(dir, path));
this._addToNodeFs(path, initialAdd, wh, depth + 1);
}
})
.on(EV.ERROR, this._boundHandleError);
return new Promise((resolve, reject) => {
if (!stream)
return reject();
stream.once(STR_END, () => {
if (this.fsw.closed) {
stream = undefined;
return;
}
const wasThrottled = throttler ? throttler.clear() : false;
resolve(undefined);
// Files that absent in current directory snapshot
// but present in previous emit `remove` event
// and are removed from @watched[directory].
previous
.getChildren()
.filter((item) => {
return item !== directory && !current.has(item);
})
.forEach((item) => {
this.fsw._remove(directory, item);
});
stream = undefined;
// one more time for any missed in case changes came in extremely quickly
if (wasThrottled)
this._handleRead(directory, false, wh, target, dir, depth, throttler);
});
});
}
/**
* Read directory to add / remove files from `@watched` list and re-read it on change.
* @param dir fs path
* @param stats
* @param initialAdd
* @param depth relative to user-supplied path
* @param target child path targeted for watch
* @param wh Common watch helpers for this path
* @param realpath
* @returns closer for the watcher instance.
*/
async _handleDir(dir, stats, initialAdd, depth, target, wh, realpath) {
const parentDir = this.fsw._getWatchedDir(sysPath.dirname(dir));
const tracked = parentDir.has(sysPath.basename(dir));
if (!(initialAdd && this.fsw.options.ignoreInitial) && !target && !tracked) {
this.fsw._emit(EV.ADD_DIR, dir, stats);
}
// ensure dir is tracked (harmless if redundant)
parentDir.add(sysPath.basename(dir));
this.fsw._getWatchedDir(dir);
let throttler;
let closer;
const oDepth = this.fsw.options.depth;
if ((oDepth == null || depth <= oDepth) && !this.fsw._symlinkPaths.has(realpath)) {
if (!target) {
await this._handleRead(dir, initialAdd, wh, target, dir, depth, throttler);
if (this.fsw.closed)
return;
}
closer = this._watchWithNodeFs(dir, (dirPath, stats) => {
// if current directory is removed, do nothing
if (stats && stats.mtimeMs === 0)
return;
this._handleRead(dirPath, false, wh, target, dir, depth, throttler);
});
}
return closer;
}
/**
* Handle added file, directory, or glob pattern.
* Delegates call to _handleFile / _handleDir after checks.
* @param path to file or ir
* @param initialAdd was the file added at watch instantiation?
* @param priorWh depth relative to user-supplied path
* @param depth Child path actually targeted for watch
* @param target Child path actually targeted for watch
*/
async _addToNodeFs(path, initialAdd, priorWh, depth, target) {
const ready = this.fsw._emitReady;
if (this.fsw._isIgnored(path) || this.fsw.closed) {
ready();
return false;
}
const wh = this.fsw._getWatchHelpers(path);
if (priorWh) {
wh.filterPath = (entry) => priorWh.filterPath(entry);
wh.filterDir = (entry) => priorWh.filterDir(entry);
}
// evaluate what is at the path we're being asked to watch
try {
const stats = await statMethods[wh.statMethod](wh.watchPath);
if (this.fsw.closed)
return;
if (this.fsw._isIgnored(wh.watchPath, stats)) {
ready();
return false;
}
const follow = this.fsw.options.followSymlinks;
let closer;
if (stats.isDirectory()) {
const absPath = sysPath.resolve(path);
const targetPath = follow ? await fsrealpath(path) : path;
if (this.fsw.closed)
return;
closer = await this._handleDir(wh.watchPath, stats, initialAdd, depth, target, wh, targetPath);
if (this.fsw.closed)
return;
// preserve this symlink's target path
if (absPath !== targetPath && targetPath !== undefined) {
this.fsw._symlinkPaths.set(absPath, targetPath);
}
}
else if (stats.isSymbolicLink()) {
const targetPath = follow ? await fsrealpath(path) : path;
if (this.fsw.closed)
return;
const parent = sysPath.dirname(wh.watchPath);
this.fsw._getWatchedDir(parent).add(wh.watchPath);
this.fsw._emit(EV.ADD, wh.watchPath, stats);
closer = await this._handleDir(parent, stats, initialAdd, depth, path, wh, targetPath);
if (this.fsw.closed)
return;
// preserve this symlink's target path
if (targetPath !== undefined) {
this.fsw._symlinkPaths.set(sysPath.resolve(path), targetPath);
}
}
else {
closer = this._handleFile(wh.watchPath, stats, initialAdd);
}
ready();
if (closer)
this.fsw._addPathCloser(path, closer);
return false;
}
catch (error) {
if (this.fsw._handleError(error)) {
ready();
return path;
}
}
}
}
+215
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/*! chokidar - MIT License (c) 2012 Paul Miller (paulmillr.com) */
import { Stats } from 'fs';
import { EventEmitter } from 'events';
import { ReaddirpStream, ReaddirpOptions, EntryInfo } from 'readdirp';
import { NodeFsHandler, EventName, Path, EVENTS as EV, WatchHandlers } from './handler.js';
type AWF = {
stabilityThreshold: number;
pollInterval: number;
};
type BasicOpts = {
persistent: boolean;
ignoreInitial: boolean;
followSymlinks: boolean;
cwd?: string;
usePolling: boolean;
interval: number;
binaryInterval: number;
alwaysStat?: boolean;
depth?: number;
ignorePermissionErrors: boolean;
atomic: boolean | number;
};
export type Throttler = {
timeoutObject: NodeJS.Timeout;
clear: () => void;
count: number;
};
export type ChokidarOptions = Partial<BasicOpts & {
ignored: Matcher | Matcher[];
awaitWriteFinish: boolean | Partial<AWF>;
}>;
export type FSWInstanceOptions = BasicOpts & {
ignored: Matcher[];
awaitWriteFinish: false | AWF;
};
export type ThrottleType = 'readdir' | 'watch' | 'add' | 'remove' | 'change';
export type EmitArgs = [path: Path, stats?: Stats];
export type EmitErrorArgs = [error: Error, stats?: Stats];
export type EmitArgsWithName = [event: EventName, ...EmitArgs];
export type MatchFunction = (val: string, stats?: Stats) => boolean;
export interface MatcherObject {
path: string;
recursive?: boolean;
}
export type Matcher = string | RegExp | MatchFunction | MatcherObject;
/**
* Directory entry.
*/
declare class DirEntry {
path: Path;
_removeWatcher: (dir: string, base: string) => void;
items: Set<Path>;
constructor(dir: Path, removeWatcher: (dir: string, base: string) => void);
add(item: string): void;
remove(item: string): Promise<void>;
has(item: string): boolean | undefined;
getChildren(): string[];
dispose(): void;
}
export declare class WatchHelper {
fsw: FSWatcher;
path: string;
watchPath: string;
fullWatchPath: string;
dirParts: string[][];
followSymlinks: boolean;
statMethod: 'stat' | 'lstat';
constructor(path: string, follow: boolean, fsw: FSWatcher);
entryPath(entry: EntryInfo): Path;
filterPath(entry: EntryInfo): boolean;
filterDir(entry: EntryInfo): boolean;
}
export interface FSWatcherKnownEventMap {
[EV.READY]: [];
[EV.RAW]: Parameters<WatchHandlers['rawEmitter']>;
[EV.ERROR]: Parameters<WatchHandlers['errHandler']>;
[EV.ALL]: [event: EventName, ...EmitArgs];
}
export type FSWatcherEventMap = FSWatcherKnownEventMap & {
[k in Exclude<EventName, keyof FSWatcherKnownEventMap>]: EmitArgs;
};
/**
* Watches files & directories for changes. Emitted events:
* `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `all`, `error`
*
* new FSWatcher()
* .add(directories)
* .on('add', path => log('File', path, 'was added'))
*/
export declare class FSWatcher extends EventEmitter<FSWatcherEventMap> {
closed: boolean;
options: FSWInstanceOptions;
_closers: Map<string, Array<any>>;
_ignoredPaths: Set<Matcher>;
_throttled: Map<ThrottleType, Map<any, any>>;
_streams: Set<ReaddirpStream>;
_symlinkPaths: Map<Path, string | boolean>;
_watched: Map<string, DirEntry>;
_pendingWrites: Map<string, any>;
_pendingUnlinks: Map<string, EmitArgsWithName>;
_readyCount: number;
_emitReady: () => void;
_closePromise?: Promise<void>;
_userIgnored?: MatchFunction;
_readyEmitted: boolean;
_emitRaw: WatchHandlers['rawEmitter'];
_boundRemove: (dir: string, item: string) => void;
_nodeFsHandler: NodeFsHandler;
constructor(_opts?: ChokidarOptions);
_addIgnoredPath(matcher: Matcher): void;
_removeIgnoredPath(matcher: Matcher): void;
/**
* Adds paths to be watched on an existing FSWatcher instance.
* @param paths_ file or file list. Other arguments are unused
*/
add(paths_: Path | Path[], _origAdd?: string, _internal?: boolean): FSWatcher;
/**
* Close watchers or start ignoring events from specified paths.
*/
unwatch(paths_: Path | Path[]): FSWatcher;
/**
* Close watchers and remove all listeners from watched paths.
*/
close(): Promise<void>;
/**
* Expose list of watched paths
* @returns for chaining
*/
getWatched(): Record<string, string[]>;
emitWithAll(event: EventName, args: EmitArgs): void;
/**
* Normalize and emit events.
* Calling _emit DOES NOT MEAN emit() would be called!
* @param event Type of event
* @param path File or directory path
* @param stats arguments to be passed with event
* @returns the error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_emit(event: EventName, path: Path, stats?: Stats): Promise<this | undefined>;
/**
* Common handler for errors
* @returns The error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_handleError(error: Error): Error | boolean;
/**
* Helper utility for throttling
* @param actionType type being throttled
* @param path being acted upon
* @param timeout duration of time to suppress duplicate actions
* @returns tracking object or false if action should be suppressed
*/
_throttle(actionType: ThrottleType, path: Path, timeout: number): Throttler | false;
_incrReadyCount(): number;
/**
* Awaits write operation to finish.
* Polls a newly created file for size variations. When files size does not change for 'threshold' milliseconds calls callback.
* @param path being acted upon
* @param threshold Time in milliseconds a file size must be fixed before acknowledging write OP is finished
* @param event
* @param awfEmit Callback to be called when ready for event to be emitted.
*/
_awaitWriteFinish(path: Path, threshold: number, event: EventName, awfEmit: (err?: Error, stat?: Stats) => void): void;
/**
* Determines whether user has asked to ignore this path.
*/
_isIgnored(path: Path, stats?: Stats): boolean;
_isntIgnored(path: Path, stat?: Stats): boolean;
/**
* Provides a set of common helpers and properties relating to symlink handling.
* @param path file or directory pattern being watched
*/
_getWatchHelpers(path: Path): WatchHelper;
/**
* Provides directory tracking objects
* @param directory path of the directory
*/
_getWatchedDir(directory: string): DirEntry;
/**
* Check for read permissions: https://stackoverflow.com/a/11781404/1358405
*/
_hasReadPermissions(stats: Stats): boolean;
/**
* Handles emitting unlink events for
* files and directories, and via recursion, for
* files and directories within directories that are unlinked
* @param directory within which the following item is located
* @param item base path of item/directory
*/
_remove(directory: string, item: string, isDirectory?: boolean): void;
/**
* Closes all watchers for a path
*/
_closePath(path: Path): void;
/**
* Closes only file-specific watchers
*/
_closeFile(path: Path): void;
_addPathCloser(path: Path, closer: () => void): void;
_readdirp(root: Path, opts?: Partial<ReaddirpOptions>): ReaddirpStream | undefined;
}
/**
* Instantiates watcher with paths to be tracked.
* @param paths file / directory paths
* @param options opts, such as `atomic`, `awaitWriteFinish`, `ignored`, and others
* @returns an instance of FSWatcher for chaining.
* @example
* const watcher = watch('.').on('all', (event, path) => { console.log(event, path); });
* watch('.', { atomic: true, awaitWriteFinish: true, ignored: (f, stats) => stats?.isFile() && !f.endsWith('.js') })
*/
export declare function watch(paths: string | string[], options?: ChokidarOptions): FSWatcher;
declare const _default: {
watch: typeof watch;
FSWatcher: typeof FSWatcher;
};
export default _default;
+798
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/*! chokidar - MIT License (c) 2012 Paul Miller (paulmillr.com) */
import { stat as statcb } from 'fs';
import { stat, readdir } from 'fs/promises';
import { EventEmitter } from 'events';
import * as sysPath from 'path';
import { readdirp } from 'readdirp';
import { NodeFsHandler, EVENTS as EV, isWindows, isIBMi, EMPTY_FN, STR_CLOSE, STR_END, } from './handler.js';
const SLASH = '/';
const SLASH_SLASH = '//';
const ONE_DOT = '.';
const TWO_DOTS = '..';
const STRING_TYPE = 'string';
const BACK_SLASH_RE = /\\/g;
const DOUBLE_SLASH_RE = /\/\//;
const DOT_RE = /\..*\.(sw[px])$|~$|\.subl.*\.tmp/;
const REPLACER_RE = /^\.[/\\]/;
function arrify(item) {
return Array.isArray(item) ? item : [item];
}
const isMatcherObject = (matcher) => typeof matcher === 'object' && matcher !== null && !(matcher instanceof RegExp);
function createPattern(matcher) {
if (typeof matcher === 'function')
return matcher;
if (typeof matcher === 'string')
return (string) => matcher === string;
if (matcher instanceof RegExp)
return (string) => matcher.test(string);
if (typeof matcher === 'object' && matcher !== null) {
return (string) => {
if (matcher.path === string)
return true;
if (matcher.recursive) {
const relative = sysPath.relative(matcher.path, string);
if (!relative) {
return false;
}
return !relative.startsWith('..') && !sysPath.isAbsolute(relative);
}
return false;
};
}
return () => false;
}
function normalizePath(path) {
if (typeof path !== 'string')
throw new Error('string expected');
path = sysPath.normalize(path);
path = path.replace(/\\/g, '/');
let prepend = false;
if (path.startsWith('//'))
prepend = true;
const DOUBLE_SLASH_RE = /\/\//;
while (path.match(DOUBLE_SLASH_RE))
path = path.replace(DOUBLE_SLASH_RE, '/');
if (prepend)
path = '/' + path;
return path;
}
function matchPatterns(patterns, testString, stats) {
const path = normalizePath(testString);
for (let index = 0; index < patterns.length; index++) {
const pattern = patterns[index];
if (pattern(path, stats)) {
return true;
}
}
return false;
}
function anymatch(matchers, testString) {
if (matchers == null) {
throw new TypeError('anymatch: specify first argument');
}
// Early cache for matchers.
const matchersArray = arrify(matchers);
const patterns = matchersArray.map((matcher) => createPattern(matcher));
if (testString == null) {
return (testString, stats) => {
return matchPatterns(patterns, testString, stats);
};
}
return matchPatterns(patterns, testString);
}
const unifyPaths = (paths_) => {
const paths = arrify(paths_).flat();
if (!paths.every((p) => typeof p === STRING_TYPE)) {
throw new TypeError(`Non-string provided as watch path: ${paths}`);
}
return paths.map(normalizePathToUnix);
};
// If SLASH_SLASH occurs at the beginning of path, it is not replaced
// because "//StoragePC/DrivePool/Movies" is a valid network path
const toUnix = (string) => {
let str = string.replace(BACK_SLASH_RE, SLASH);
let prepend = false;
if (str.startsWith(SLASH_SLASH)) {
prepend = true;
}
while (str.match(DOUBLE_SLASH_RE)) {
str = str.replace(DOUBLE_SLASH_RE, SLASH);
}
if (prepend) {
str = SLASH + str;
}
return str;
};
// Our version of upath.normalize
// TODO: this is not equal to path-normalize module - investigate why
const normalizePathToUnix = (path) => toUnix(sysPath.normalize(toUnix(path)));
// TODO: refactor
const normalizeIgnored = (cwd = '') => (path) => {
if (typeof path === 'string') {
return normalizePathToUnix(sysPath.isAbsolute(path) ? path : sysPath.join(cwd, path));
}
else {
return path;
}
};
const getAbsolutePath = (path, cwd) => {
if (sysPath.isAbsolute(path)) {
return path;
}
return sysPath.join(cwd, path);
};
const EMPTY_SET = Object.freeze(new Set());
/**
* Directory entry.
*/
class DirEntry {
constructor(dir, removeWatcher) {
this.path = dir;
this._removeWatcher = removeWatcher;
this.items = new Set();
}
add(item) {
const { items } = this;
if (!items)
return;
if (item !== ONE_DOT && item !== TWO_DOTS)
items.add(item);
}
async remove(item) {
const { items } = this;
if (!items)
return;
items.delete(item);
if (items.size > 0)
return;
const dir = this.path;
try {
await readdir(dir);
}
catch (err) {
if (this._removeWatcher) {
this._removeWatcher(sysPath.dirname(dir), sysPath.basename(dir));
}
}
}
has(item) {
const { items } = this;
if (!items)
return;
return items.has(item);
}
getChildren() {
const { items } = this;
if (!items)
return [];
return [...items.values()];
}
dispose() {
this.items.clear();
this.path = '';
this._removeWatcher = EMPTY_FN;
this.items = EMPTY_SET;
Object.freeze(this);
}
}
const STAT_METHOD_F = 'stat';
const STAT_METHOD_L = 'lstat';
export class WatchHelper {
constructor(path, follow, fsw) {
this.fsw = fsw;
const watchPath = path;
this.path = path = path.replace(REPLACER_RE, '');
this.watchPath = watchPath;
this.fullWatchPath = sysPath.resolve(watchPath);
this.dirParts = [];
this.dirParts.forEach((parts) => {
if (parts.length > 1)
parts.pop();
});
this.followSymlinks = follow;
this.statMethod = follow ? STAT_METHOD_F : STAT_METHOD_L;
}
entryPath(entry) {
return sysPath.join(this.watchPath, sysPath.relative(this.watchPath, entry.fullPath));
}
filterPath(entry) {
const { stats } = entry;
if (stats && stats.isSymbolicLink())
return this.filterDir(entry);
const resolvedPath = this.entryPath(entry);
// TODO: what if stats is undefined? remove !
return this.fsw._isntIgnored(resolvedPath, stats) && this.fsw._hasReadPermissions(stats);
}
filterDir(entry) {
return this.fsw._isntIgnored(this.entryPath(entry), entry.stats);
}
}
/**
* Watches files & directories for changes. Emitted events:
* `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `all`, `error`
*
* new FSWatcher()
* .add(directories)
* .on('add', path => log('File', path, 'was added'))
*/
export class FSWatcher extends EventEmitter {
// Not indenting methods for history sake; for now.
constructor(_opts = {}) {
super();
this.closed = false;
this._closers = new Map();
this._ignoredPaths = new Set();
this._throttled = new Map();
this._streams = new Set();
this._symlinkPaths = new Map();
this._watched = new Map();
this._pendingWrites = new Map();
this._pendingUnlinks = new Map();
this._readyCount = 0;
this._readyEmitted = false;
const awf = _opts.awaitWriteFinish;
const DEF_AWF = { stabilityThreshold: 2000, pollInterval: 100 };
const opts = {
// Defaults
persistent: true,
ignoreInitial: false,
ignorePermissionErrors: false,
interval: 100,
binaryInterval: 300,
followSymlinks: true,
usePolling: false,
// useAsync: false,
atomic: true, // NOTE: overwritten later (depends on usePolling)
..._opts,
// Change format
ignored: _opts.ignored ? arrify(_opts.ignored) : arrify([]),
awaitWriteFinish: awf === true ? DEF_AWF : typeof awf === 'object' ? { ...DEF_AWF, ...awf } : false,
};
// Always default to polling on IBM i because fs.watch() is not available on IBM i.
if (isIBMi)
opts.usePolling = true;
// Editor atomic write normalization enabled by default with fs.watch
if (opts.atomic === undefined)
opts.atomic = !opts.usePolling;
// opts.atomic = typeof _opts.atomic === 'number' ? _opts.atomic : 100;
// Global override. Useful for developers, who need to force polling for all
// instances of chokidar, regardless of usage / dependency depth
const envPoll = process.env.CHOKIDAR_USEPOLLING;
if (envPoll !== undefined) {
const envLower = envPoll.toLowerCase();
if (envLower === 'false' || envLower === '0')
opts.usePolling = false;
else if (envLower === 'true' || envLower === '1')
opts.usePolling = true;
else
opts.usePolling = !!envLower;
}
const envInterval = process.env.CHOKIDAR_INTERVAL;
if (envInterval)
opts.interval = Number.parseInt(envInterval, 10);
// This is done to emit ready only once, but each 'add' will increase that?
let readyCalls = 0;
this._emitReady = () => {
readyCalls++;
if (readyCalls >= this._readyCount) {
this._emitReady = EMPTY_FN;
this._readyEmitted = true;
// use process.nextTick to allow time for listener to be bound
process.nextTick(() => this.emit(EV.READY));
}
};
this._emitRaw = (...args) => this.emit(EV.RAW, ...args);
this._boundRemove = this._remove.bind(this);
this.options = opts;
this._nodeFsHandler = new NodeFsHandler(this);
// Youre frozen when your hearts not open.
Object.freeze(opts);
}
_addIgnoredPath(matcher) {
if (isMatcherObject(matcher)) {
// return early if we already have a deeply equal matcher object
for (const ignored of this._ignoredPaths) {
if (isMatcherObject(ignored) &&
ignored.path === matcher.path &&
ignored.recursive === matcher.recursive) {
return;
}
}
}
this._ignoredPaths.add(matcher);
}
_removeIgnoredPath(matcher) {
this._ignoredPaths.delete(matcher);
// now find any matcher objects with the matcher as path
if (typeof matcher === 'string') {
for (const ignored of this._ignoredPaths) {
// TODO (43081j): make this more efficient.
// probably just make a `this._ignoredDirectories` or some
// such thing.
if (isMatcherObject(ignored) && ignored.path === matcher) {
this._ignoredPaths.delete(ignored);
}
}
}
}
// Public methods
/**
* Adds paths to be watched on an existing FSWatcher instance.
* @param paths_ file or file list. Other arguments are unused
*/
add(paths_, _origAdd, _internal) {
const { cwd } = this.options;
this.closed = false;
this._closePromise = undefined;
let paths = unifyPaths(paths_);
if (cwd) {
paths = paths.map((path) => {
const absPath = getAbsolutePath(path, cwd);
// Check `path` instead of `absPath` because the cwd portion can't be a glob
return absPath;
});
}
paths.forEach((path) => {
this._removeIgnoredPath(path);
});
this._userIgnored = undefined;
if (!this._readyCount)
this._readyCount = 0;
this._readyCount += paths.length;
Promise.all(paths.map(async (path) => {
const res = await this._nodeFsHandler._addToNodeFs(path, !_internal, undefined, 0, _origAdd);
if (res)
this._emitReady();
return res;
})).then((results) => {
if (this.closed)
return;
results.forEach((item) => {
if (item)
this.add(sysPath.dirname(item), sysPath.basename(_origAdd || item));
});
});
return this;
}
/**
* Close watchers or start ignoring events from specified paths.
*/
unwatch(paths_) {
if (this.closed)
return this;
const paths = unifyPaths(paths_);
const { cwd } = this.options;
paths.forEach((path) => {
// convert to absolute path unless relative path already matches
if (!sysPath.isAbsolute(path) && !this._closers.has(path)) {
if (cwd)
path = sysPath.join(cwd, path);
path = sysPath.resolve(path);
}
this._closePath(path);
this._addIgnoredPath(path);
if (this._watched.has(path)) {
this._addIgnoredPath({
path,
recursive: true,
});
}
// reset the cached userIgnored anymatch fn
// to make ignoredPaths changes effective
this._userIgnored = undefined;
});
return this;
}
/**
* Close watchers and remove all listeners from watched paths.
*/
close() {
if (this._closePromise) {
return this._closePromise;
}
this.closed = true;
// Memory management.
this.removeAllListeners();
const closers = [];
this._closers.forEach((closerList) => closerList.forEach((closer) => {
const promise = closer();
if (promise instanceof Promise)
closers.push(promise);
}));
this._streams.forEach((stream) => stream.destroy());
this._userIgnored = undefined;
this._readyCount = 0;
this._readyEmitted = false;
this._watched.forEach((dirent) => dirent.dispose());
this._closers.clear();
this._watched.clear();
this._streams.clear();
this._symlinkPaths.clear();
this._throttled.clear();
this._closePromise = closers.length
? Promise.all(closers).then(() => undefined)
: Promise.resolve();
return this._closePromise;
}
/**
* Expose list of watched paths
* @returns for chaining
*/
getWatched() {
const watchList = {};
this._watched.forEach((entry, dir) => {
const key = this.options.cwd ? sysPath.relative(this.options.cwd, dir) : dir;
const index = key || ONE_DOT;
watchList[index] = entry.getChildren().sort();
});
return watchList;
}
emitWithAll(event, args) {
this.emit(event, ...args);
if (event !== EV.ERROR)
this.emit(EV.ALL, event, ...args);
}
// Common helpers
// --------------
/**
* Normalize and emit events.
* Calling _emit DOES NOT MEAN emit() would be called!
* @param event Type of event
* @param path File or directory path
* @param stats arguments to be passed with event
* @returns the error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
async _emit(event, path, stats) {
if (this.closed)
return;
const opts = this.options;
if (isWindows)
path = sysPath.normalize(path);
if (opts.cwd)
path = sysPath.relative(opts.cwd, path);
const args = [path];
if (stats != null)
args.push(stats);
const awf = opts.awaitWriteFinish;
let pw;
if (awf && (pw = this._pendingWrites.get(path))) {
pw.lastChange = new Date();
return this;
}
if (opts.atomic) {
if (event === EV.UNLINK) {
this._pendingUnlinks.set(path, [event, ...args]);
setTimeout(() => {
this._pendingUnlinks.forEach((entry, path) => {
this.emit(...entry);
this.emit(EV.ALL, ...entry);
this._pendingUnlinks.delete(path);
});
}, typeof opts.atomic === 'number' ? opts.atomic : 100);
return this;
}
if (event === EV.ADD && this._pendingUnlinks.has(path)) {
event = EV.CHANGE;
this._pendingUnlinks.delete(path);
}
}
if (awf && (event === EV.ADD || event === EV.CHANGE) && this._readyEmitted) {
const awfEmit = (err, stats) => {
if (err) {
event = EV.ERROR;
args[0] = err;
this.emitWithAll(event, args);
}
else if (stats) {
// if stats doesn't exist the file must have been deleted
if (args.length > 1) {
args[1] = stats;
}
else {
args.push(stats);
}
this.emitWithAll(event, args);
}
};
this._awaitWriteFinish(path, awf.stabilityThreshold, event, awfEmit);
return this;
}
if (event === EV.CHANGE) {
const isThrottled = !this._throttle(EV.CHANGE, path, 50);
if (isThrottled)
return this;
}
if (opts.alwaysStat &&
stats === undefined &&
(event === EV.ADD || event === EV.ADD_DIR || event === EV.CHANGE)) {
const fullPath = opts.cwd ? sysPath.join(opts.cwd, path) : path;
let stats;
try {
stats = await stat(fullPath);
}
catch (err) {
// do nothing
}
// Suppress event when fs_stat fails, to avoid sending undefined 'stat'
if (!stats || this.closed)
return;
args.push(stats);
}
this.emitWithAll(event, args);
return this;
}
/**
* Common handler for errors
* @returns The error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_handleError(error) {
const code = error && error.code;
if (error &&
code !== 'ENOENT' &&
code !== 'ENOTDIR' &&
(!this.options.ignorePermissionErrors || (code !== 'EPERM' && code !== 'EACCES'))) {
this.emit(EV.ERROR, error);
}
return error || this.closed;
}
/**
* Helper utility for throttling
* @param actionType type being throttled
* @param path being acted upon
* @param timeout duration of time to suppress duplicate actions
* @returns tracking object or false if action should be suppressed
*/
_throttle(actionType, path, timeout) {
if (!this._throttled.has(actionType)) {
this._throttled.set(actionType, new Map());
}
const action = this._throttled.get(actionType);
if (!action)
throw new Error('invalid throttle');
const actionPath = action.get(path);
if (actionPath) {
actionPath.count++;
return false;
}
// eslint-disable-next-line prefer-const
let timeoutObject;
const clear = () => {
const item = action.get(path);
const count = item ? item.count : 0;
action.delete(path);
clearTimeout(timeoutObject);
if (item)
clearTimeout(item.timeoutObject);
return count;
};
timeoutObject = setTimeout(clear, timeout);
const thr = { timeoutObject, clear, count: 0 };
action.set(path, thr);
return thr;
}
_incrReadyCount() {
return this._readyCount++;
}
/**
* Awaits write operation to finish.
* Polls a newly created file for size variations. When files size does not change for 'threshold' milliseconds calls callback.
* @param path being acted upon
* @param threshold Time in milliseconds a file size must be fixed before acknowledging write OP is finished
* @param event
* @param awfEmit Callback to be called when ready for event to be emitted.
*/
_awaitWriteFinish(path, threshold, event, awfEmit) {
const awf = this.options.awaitWriteFinish;
if (typeof awf !== 'object')
return;
const pollInterval = awf.pollInterval;
let timeoutHandler;
let fullPath = path;
if (this.options.cwd && !sysPath.isAbsolute(path)) {
fullPath = sysPath.join(this.options.cwd, path);
}
const now = new Date();
const writes = this._pendingWrites;
function awaitWriteFinishFn(prevStat) {
statcb(fullPath, (err, curStat) => {
if (err || !writes.has(path)) {
if (err && err.code !== 'ENOENT')
awfEmit(err);
return;
}
const now = Number(new Date());
if (prevStat && curStat.size !== prevStat.size) {
writes.get(path).lastChange = now;
}
const pw = writes.get(path);
const df = now - pw.lastChange;
if (df >= threshold) {
writes.delete(path);
awfEmit(undefined, curStat);
}
else {
timeoutHandler = setTimeout(awaitWriteFinishFn, pollInterval, curStat);
}
});
}
if (!writes.has(path)) {
writes.set(path, {
lastChange: now,
cancelWait: () => {
writes.delete(path);
clearTimeout(timeoutHandler);
return event;
},
});
timeoutHandler = setTimeout(awaitWriteFinishFn, pollInterval);
}
}
/**
* Determines whether user has asked to ignore this path.
*/
_isIgnored(path, stats) {
if (this.options.atomic && DOT_RE.test(path))
return true;
if (!this._userIgnored) {
const { cwd } = this.options;
const ign = this.options.ignored;
const ignored = (ign || []).map(normalizeIgnored(cwd));
const ignoredPaths = [...this._ignoredPaths];
const list = [...ignoredPaths.map(normalizeIgnored(cwd)), ...ignored];
this._userIgnored = anymatch(list, undefined);
}
return this._userIgnored(path, stats);
}
_isntIgnored(path, stat) {
return !this._isIgnored(path, stat);
}
/**
* Provides a set of common helpers and properties relating to symlink handling.
* @param path file or directory pattern being watched
*/
_getWatchHelpers(path) {
return new WatchHelper(path, this.options.followSymlinks, this);
}
// Directory helpers
// -----------------
/**
* Provides directory tracking objects
* @param directory path of the directory
*/
_getWatchedDir(directory) {
const dir = sysPath.resolve(directory);
if (!this._watched.has(dir))
this._watched.set(dir, new DirEntry(dir, this._boundRemove));
return this._watched.get(dir);
}
// File helpers
// ------------
/**
* Check for read permissions: https://stackoverflow.com/a/11781404/1358405
*/
_hasReadPermissions(stats) {
if (this.options.ignorePermissionErrors)
return true;
return Boolean(Number(stats.mode) & 0o400);
}
/**
* Handles emitting unlink events for
* files and directories, and via recursion, for
* files and directories within directories that are unlinked
* @param directory within which the following item is located
* @param item base path of item/directory
*/
_remove(directory, item, isDirectory) {
// if what is being deleted is a directory, get that directory's paths
// for recursive deleting and cleaning of watched object
// if it is not a directory, nestedDirectoryChildren will be empty array
const path = sysPath.join(directory, item);
const fullPath = sysPath.resolve(path);
isDirectory =
isDirectory != null ? isDirectory : this._watched.has(path) || this._watched.has(fullPath);
// prevent duplicate handling in case of arriving here nearly simultaneously
// via multiple paths (such as _handleFile and _handleDir)
if (!this._throttle('remove', path, 100))
return;
// if the only watched file is removed, watch for its return
if (!isDirectory && this._watched.size === 1) {
this.add(directory, item, true);
}
// This will create a new entry in the watched object in either case
// so we got to do the directory check beforehand
const wp = this._getWatchedDir(path);
const nestedDirectoryChildren = wp.getChildren();
// Recursively remove children directories / files.
nestedDirectoryChildren.forEach((nested) => this._remove(path, nested));
// Check if item was on the watched list and remove it
const parent = this._getWatchedDir(directory);
const wasTracked = parent.has(item);
parent.remove(item);
// Fixes issue #1042 -> Relative paths were detected and added as symlinks
// (https://github.com/paulmillr/chokidar/blob/e1753ddbc9571bdc33b4a4af172d52cb6e611c10/lib/nodefs-handler.js#L612),
// but never removed from the map in case the path was deleted.
// This leads to an incorrect state if the path was recreated:
// https://github.com/paulmillr/chokidar/blob/e1753ddbc9571bdc33b4a4af172d52cb6e611c10/lib/nodefs-handler.js#L553
if (this._symlinkPaths.has(fullPath)) {
this._symlinkPaths.delete(fullPath);
}
// If we wait for this file to be fully written, cancel the wait.
let relPath = path;
if (this.options.cwd)
relPath = sysPath.relative(this.options.cwd, path);
if (this.options.awaitWriteFinish && this._pendingWrites.has(relPath)) {
const event = this._pendingWrites.get(relPath).cancelWait();
if (event === EV.ADD)
return;
}
// The Entry will either be a directory that just got removed
// or a bogus entry to a file, in either case we have to remove it
this._watched.delete(path);
this._watched.delete(fullPath);
const eventName = isDirectory ? EV.UNLINK_DIR : EV.UNLINK;
if (wasTracked && !this._isIgnored(path))
this._emit(eventName, path);
// Avoid conflicts if we later create another file with the same name
this._closePath(path);
}
/**
* Closes all watchers for a path
*/
_closePath(path) {
this._closeFile(path);
const dir = sysPath.dirname(path);
this._getWatchedDir(dir).remove(sysPath.basename(path));
}
/**
* Closes only file-specific watchers
*/
_closeFile(path) {
const closers = this._closers.get(path);
if (!closers)
return;
closers.forEach((closer) => closer());
this._closers.delete(path);
}
_addPathCloser(path, closer) {
if (!closer)
return;
let list = this._closers.get(path);
if (!list) {
list = [];
this._closers.set(path, list);
}
list.push(closer);
}
_readdirp(root, opts) {
if (this.closed)
return;
const options = { type: EV.ALL, alwaysStat: true, lstat: true, ...opts, depth: 0 };
let stream = readdirp(root, options);
this._streams.add(stream);
stream.once(STR_CLOSE, () => {
stream = undefined;
});
stream.once(STR_END, () => {
if (stream) {
this._streams.delete(stream);
stream = undefined;
}
});
return stream;
}
}
/**
* Instantiates watcher with paths to be tracked.
* @param paths file / directory paths
* @param options opts, such as `atomic`, `awaitWriteFinish`, `ignored`, and others
* @returns an instance of FSWatcher for chaining.
* @example
* const watcher = watch('.').on('all', (event, path) => { console.log(event, path); });
* watch('.', { atomic: true, awaitWriteFinish: true, ignored: (f, stats) => stats?.isFile() && !f.endsWith('.js') })
*/
export function watch(paths, options = {}) {
const watcher = new FSWatcher(options);
watcher.add(paths);
return watcher;
}
export default { watch, FSWatcher };
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{ "type": "module", "sideEffects": false }
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import type { WatchEventType, Stats, FSWatcher as NativeFsWatcher } from 'fs';
import type { FSWatcher, WatchHelper, Throttler } from './index.js';
import type { EntryInfo } from 'readdirp';
export type Path = string;
export declare const STR_DATA = "data";
export declare const STR_END = "end";
export declare const STR_CLOSE = "close";
export declare const EMPTY_FN: () => void;
export declare const IDENTITY_FN: (val: unknown) => unknown;
export declare const isWindows: boolean;
export declare const isMacos: boolean;
export declare const isLinux: boolean;
export declare const isFreeBSD: boolean;
export declare const isIBMi: boolean;
export declare const EVENTS: {
readonly ALL: "all";
readonly READY: "ready";
readonly ADD: "add";
readonly CHANGE: "change";
readonly ADD_DIR: "addDir";
readonly UNLINK: "unlink";
readonly UNLINK_DIR: "unlinkDir";
readonly RAW: "raw";
readonly ERROR: "error";
};
export type EventName = (typeof EVENTS)[keyof typeof EVENTS];
export type FsWatchContainer = {
listeners: (path: string) => void | Set<any>;
errHandlers: (err: unknown) => void | Set<any>;
rawEmitters: (ev: WatchEventType, path: string, opts: unknown) => void | Set<any>;
watcher: NativeFsWatcher;
watcherUnusable?: boolean;
};
export interface WatchHandlers {
listener: (path: string) => void;
errHandler: (err: unknown) => void;
rawEmitter: (ev: WatchEventType, path: string, opts: unknown) => void;
}
/**
* @mixin
*/
export declare class NodeFsHandler {
fsw: FSWatcher;
_boundHandleError: (error: unknown) => void;
constructor(fsW: FSWatcher);
/**
* Watch file for changes with fs_watchFile or fs_watch.
* @param path to file or dir
* @param listener on fs change
* @returns closer for the watcher instance
*/
_watchWithNodeFs(path: string, listener: (path: string, newStats?: any) => void | Promise<void>): (() => void) | undefined;
/**
* Watch a file and emit add event if warranted.
* @returns closer for the watcher instance
*/
_handleFile(file: Path, stats: Stats, initialAdd: boolean): (() => void) | undefined;
/**
* Handle symlinks encountered while reading a dir.
* @param entry returned by readdirp
* @param directory path of dir being read
* @param path of this item
* @param item basename of this item
* @returns true if no more processing is needed for this entry.
*/
_handleSymlink(entry: EntryInfo, directory: string, path: Path, item: string): Promise<boolean | undefined>;
_handleRead(directory: string, initialAdd: boolean, wh: WatchHelper, target: Path, dir: Path, depth: number, throttler: Throttler): Promise<unknown> | undefined;
/**
* Read directory to add / remove files from `@watched` list and re-read it on change.
* @param dir fs path
* @param stats
* @param initialAdd
* @param depth relative to user-supplied path
* @param target child path targeted for watch
* @param wh Common watch helpers for this path
* @param realpath
* @returns closer for the watcher instance.
*/
_handleDir(dir: string, stats: Stats, initialAdd: boolean, depth: number, target: string, wh: WatchHelper, realpath: string): Promise<(() => void) | undefined>;
/**
* Handle added file, directory, or glob pattern.
* Delegates call to _handleFile / _handleDir after checks.
* @param path to file or ir
* @param initialAdd was the file added at watch instantiation?
* @param priorWh depth relative to user-supplied path
* @param depth Child path actually targeted for watch
* @param target Child path actually targeted for watch
*/
_addToNodeFs(path: string, initialAdd: boolean, priorWh: WatchHelper | undefined, depth: number, target?: string): Promise<string | false | undefined>;
}
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.NodeFsHandler = exports.EVENTS = exports.isIBMi = exports.isFreeBSD = exports.isLinux = exports.isMacos = exports.isWindows = exports.IDENTITY_FN = exports.EMPTY_FN = exports.STR_CLOSE = exports.STR_END = exports.STR_DATA = void 0;
const fs_1 = require("fs");
const promises_1 = require("fs/promises");
const sysPath = require("path");
const os_1 = require("os");
exports.STR_DATA = 'data';
exports.STR_END = 'end';
exports.STR_CLOSE = 'close';
const EMPTY_FN = () => { };
exports.EMPTY_FN = EMPTY_FN;
const IDENTITY_FN = (val) => val;
exports.IDENTITY_FN = IDENTITY_FN;
const pl = process.platform;
exports.isWindows = pl === 'win32';
exports.isMacos = pl === 'darwin';
exports.isLinux = pl === 'linux';
exports.isFreeBSD = pl === 'freebsd';
exports.isIBMi = (0, os_1.type)() === 'OS400';
exports.EVENTS = {
ALL: 'all',
READY: 'ready',
ADD: 'add',
CHANGE: 'change',
ADD_DIR: 'addDir',
UNLINK: 'unlink',
UNLINK_DIR: 'unlinkDir',
RAW: 'raw',
ERROR: 'error',
};
const EV = exports.EVENTS;
const THROTTLE_MODE_WATCH = 'watch';
const statMethods = { lstat: promises_1.lstat, stat: promises_1.stat };
const KEY_LISTENERS = 'listeners';
const KEY_ERR = 'errHandlers';
const KEY_RAW = 'rawEmitters';
const HANDLER_KEYS = [KEY_LISTENERS, KEY_ERR, KEY_RAW];
// prettier-ignore
const binaryExtensions = new Set([
'3dm', '3ds', '3g2', '3gp', '7z', 'a', 'aac', 'adp', 'afdesign', 'afphoto', 'afpub', 'ai',
'aif', 'aiff', 'alz', 'ape', 'apk', 'appimage', 'ar', 'arj', 'asf', 'au', 'avi',
'bak', 'baml', 'bh', 'bin', 'bk', 'bmp', 'btif', 'bz2', 'bzip2',
'cab', 'caf', 'cgm', 'class', 'cmx', 'cpio', 'cr2', 'cur', 'dat', 'dcm', 'deb', 'dex', 'djvu',
'dll', 'dmg', 'dng', 'doc', 'docm', 'docx', 'dot', 'dotm', 'dra', 'DS_Store', 'dsk', 'dts',
'dtshd', 'dvb', 'dwg', 'dxf',
'ecelp4800', 'ecelp7470', 'ecelp9600', 'egg', 'eol', 'eot', 'epub', 'exe',
'f4v', 'fbs', 'fh', 'fla', 'flac', 'flatpak', 'fli', 'flv', 'fpx', 'fst', 'fvt',
'g3', 'gh', 'gif', 'graffle', 'gz', 'gzip',
'h261', 'h263', 'h264', 'icns', 'ico', 'ief', 'img', 'ipa', 'iso',
'jar', 'jpeg', 'jpg', 'jpgv', 'jpm', 'jxr', 'key', 'ktx',
'lha', 'lib', 'lvp', 'lz', 'lzh', 'lzma', 'lzo',
'm3u', 'm4a', 'm4v', 'mar', 'mdi', 'mht', 'mid', 'midi', 'mj2', 'mka', 'mkv', 'mmr', 'mng',
'mobi', 'mov', 'movie', 'mp3',
'mp4', 'mp4a', 'mpeg', 'mpg', 'mpga', 'mxu',
'nef', 'npx', 'numbers', 'nupkg',
'o', 'odp', 'ods', 'odt', 'oga', 'ogg', 'ogv', 'otf', 'ott',
'pages', 'pbm', 'pcx', 'pdb', 'pdf', 'pea', 'pgm', 'pic', 'png', 'pnm', 'pot', 'potm',
'potx', 'ppa', 'ppam',
'ppm', 'pps', 'ppsm', 'ppsx', 'ppt', 'pptm', 'pptx', 'psd', 'pya', 'pyc', 'pyo', 'pyv',
'qt',
'rar', 'ras', 'raw', 'resources', 'rgb', 'rip', 'rlc', 'rmf', 'rmvb', 'rpm', 'rtf', 'rz',
's3m', 's7z', 'scpt', 'sgi', 'shar', 'snap', 'sil', 'sketch', 'slk', 'smv', 'snk', 'so',
'stl', 'suo', 'sub', 'swf',
'tar', 'tbz', 'tbz2', 'tga', 'tgz', 'thmx', 'tif', 'tiff', 'tlz', 'ttc', 'ttf', 'txz',
'udf', 'uvh', 'uvi', 'uvm', 'uvp', 'uvs', 'uvu',
'viv', 'vob',
'war', 'wav', 'wax', 'wbmp', 'wdp', 'weba', 'webm', 'webp', 'whl', 'wim', 'wm', 'wma',
'wmv', 'wmx', 'woff', 'woff2', 'wrm', 'wvx',
'xbm', 'xif', 'xla', 'xlam', 'xls', 'xlsb', 'xlsm', 'xlsx', 'xlt', 'xltm', 'xltx', 'xm',
'xmind', 'xpi', 'xpm', 'xwd', 'xz',
'z', 'zip', 'zipx',
]);
const isBinaryPath = (filePath) => binaryExtensions.has(sysPath.extname(filePath).slice(1).toLowerCase());
// TODO: emit errors properly. Example: EMFILE on Macos.
const foreach = (val, fn) => {
if (val instanceof Set) {
val.forEach(fn);
}
else {
fn(val);
}
};
const addAndConvert = (main, prop, item) => {
let container = main[prop];
if (!(container instanceof Set)) {
main[prop] = container = new Set([container]);
}
container.add(item);
};
const clearItem = (cont) => (key) => {
const set = cont[key];
if (set instanceof Set) {
set.clear();
}
else {
delete cont[key];
}
};
const delFromSet = (main, prop, item) => {
const container = main[prop];
if (container instanceof Set) {
container.delete(item);
}
else if (container === item) {
delete main[prop];
}
};
const isEmptySet = (val) => (val instanceof Set ? val.size === 0 : !val);
const FsWatchInstances = new Map();
/**
* Instantiates the fs_watch interface
* @param path to be watched
* @param options to be passed to fs_watch
* @param listener main event handler
* @param errHandler emits info about errors
* @param emitRaw emits raw event data
* @returns {NativeFsWatcher}
*/
function createFsWatchInstance(path, options, listener, errHandler, emitRaw) {
const handleEvent = (rawEvent, evPath) => {
listener(path);
emitRaw(rawEvent, evPath, { watchedPath: path });
// emit based on events occurring for files from a directory's watcher in
// case the file's watcher misses it (and rely on throttling to de-dupe)
if (evPath && path !== evPath) {
fsWatchBroadcast(sysPath.resolve(path, evPath), KEY_LISTENERS, sysPath.join(path, evPath));
}
};
try {
return (0, fs_1.watch)(path, {
persistent: options.persistent,
}, handleEvent);
}
catch (error) {
errHandler(error);
return undefined;
}
}
/**
* Helper for passing fs_watch event data to a collection of listeners
* @param fullPath absolute path bound to fs_watch instance
*/
const fsWatchBroadcast = (fullPath, listenerType, val1, val2, val3) => {
const cont = FsWatchInstances.get(fullPath);
if (!cont)
return;
foreach(cont[listenerType], (listener) => {
listener(val1, val2, val3);
});
};
/**
* Instantiates the fs_watch interface or binds listeners
* to an existing one covering the same file system entry
* @param path
* @param fullPath absolute path
* @param options to be passed to fs_watch
* @param handlers container for event listener functions
*/
const setFsWatchListener = (path, fullPath, options, handlers) => {
const { listener, errHandler, rawEmitter } = handlers;
let cont = FsWatchInstances.get(fullPath);
let watcher;
if (!options.persistent) {
watcher = createFsWatchInstance(path, options, listener, errHandler, rawEmitter);
if (!watcher)
return;
return watcher.close.bind(watcher);
}
if (cont) {
addAndConvert(cont, KEY_LISTENERS, listener);
addAndConvert(cont, KEY_ERR, errHandler);
addAndConvert(cont, KEY_RAW, rawEmitter);
}
else {
watcher = createFsWatchInstance(path, options, fsWatchBroadcast.bind(null, fullPath, KEY_LISTENERS), errHandler, // no need to use broadcast here
fsWatchBroadcast.bind(null, fullPath, KEY_RAW));
if (!watcher)
return;
watcher.on(EV.ERROR, async (error) => {
const broadcastErr = fsWatchBroadcast.bind(null, fullPath, KEY_ERR);
if (cont)
cont.watcherUnusable = true; // documented since Node 10.4.1
// Workaround for https://github.com/joyent/node/issues/4337
if (exports.isWindows && error.code === 'EPERM') {
try {
const fd = await (0, promises_1.open)(path, 'r');
await fd.close();
broadcastErr(error);
}
catch (err) {
// do nothing
}
}
else {
broadcastErr(error);
}
});
cont = {
listeners: listener,
errHandlers: errHandler,
rawEmitters: rawEmitter,
watcher,
};
FsWatchInstances.set(fullPath, cont);
}
// const index = cont.listeners.indexOf(listener);
// removes this instance's listeners and closes the underlying fs_watch
// instance if there are no more listeners left
return () => {
delFromSet(cont, KEY_LISTENERS, listener);
delFromSet(cont, KEY_ERR, errHandler);
delFromSet(cont, KEY_RAW, rawEmitter);
if (isEmptySet(cont.listeners)) {
// Check to protect against issue gh-730.
// if (cont.watcherUnusable) {
cont.watcher.close();
// }
FsWatchInstances.delete(fullPath);
HANDLER_KEYS.forEach(clearItem(cont));
// @ts-ignore
cont.watcher = undefined;
Object.freeze(cont);
}
};
};
// fs_watchFile helpers
// object to hold per-process fs_watchFile instances
// (may be shared across chokidar FSWatcher instances)
const FsWatchFileInstances = new Map();
/**
* Instantiates the fs_watchFile interface or binds listeners
* to an existing one covering the same file system entry
* @param path to be watched
* @param fullPath absolute path
* @param options options to be passed to fs_watchFile
* @param handlers container for event listener functions
* @returns closer
*/
const setFsWatchFileListener = (path, fullPath, options, handlers) => {
const { listener, rawEmitter } = handlers;
let cont = FsWatchFileInstances.get(fullPath);
// let listeners = new Set();
// let rawEmitters = new Set();
const copts = cont && cont.options;
if (copts && (copts.persistent < options.persistent || copts.interval > options.interval)) {
// "Upgrade" the watcher to persistence or a quicker interval.
// This creates some unlikely edge case issues if the user mixes
// settings in a very weird way, but solving for those cases
// doesn't seem worthwhile for the added complexity.
// listeners = cont.listeners;
// rawEmitters = cont.rawEmitters;
(0, fs_1.unwatchFile)(fullPath);
cont = undefined;
}
if (cont) {
addAndConvert(cont, KEY_LISTENERS, listener);
addAndConvert(cont, KEY_RAW, rawEmitter);
}
else {
// TODO
// listeners.add(listener);
// rawEmitters.add(rawEmitter);
cont = {
listeners: listener,
rawEmitters: rawEmitter,
options,
watcher: (0, fs_1.watchFile)(fullPath, options, (curr, prev) => {
foreach(cont.rawEmitters, (rawEmitter) => {
rawEmitter(EV.CHANGE, fullPath, { curr, prev });
});
const currmtime = curr.mtimeMs;
if (curr.size !== prev.size || currmtime > prev.mtimeMs || currmtime === 0) {
foreach(cont.listeners, (listener) => listener(path, curr));
}
}),
};
FsWatchFileInstances.set(fullPath, cont);
}
// const index = cont.listeners.indexOf(listener);
// Removes this instance's listeners and closes the underlying fs_watchFile
// instance if there are no more listeners left.
return () => {
delFromSet(cont, KEY_LISTENERS, listener);
delFromSet(cont, KEY_RAW, rawEmitter);
if (isEmptySet(cont.listeners)) {
FsWatchFileInstances.delete(fullPath);
(0, fs_1.unwatchFile)(fullPath);
cont.options = cont.watcher = undefined;
Object.freeze(cont);
}
};
};
/**
* @mixin
*/
class NodeFsHandler {
constructor(fsW) {
this.fsw = fsW;
this._boundHandleError = (error) => fsW._handleError(error);
}
/**
* Watch file for changes with fs_watchFile or fs_watch.
* @param path to file or dir
* @param listener on fs change
* @returns closer for the watcher instance
*/
_watchWithNodeFs(path, listener) {
const opts = this.fsw.options;
const directory = sysPath.dirname(path);
const basename = sysPath.basename(path);
const parent = this.fsw._getWatchedDir(directory);
parent.add(basename);
const absolutePath = sysPath.resolve(path);
const options = {
persistent: opts.persistent,
};
if (!listener)
listener = exports.EMPTY_FN;
let closer;
if (opts.usePolling) {
const enableBin = opts.interval !== opts.binaryInterval;
options.interval = enableBin && isBinaryPath(basename) ? opts.binaryInterval : opts.interval;
closer = setFsWatchFileListener(path, absolutePath, options, {
listener,
rawEmitter: this.fsw._emitRaw,
});
}
else {
closer = setFsWatchListener(path, absolutePath, options, {
listener,
errHandler: this._boundHandleError,
rawEmitter: this.fsw._emitRaw,
});
}
return closer;
}
/**
* Watch a file and emit add event if warranted.
* @returns closer for the watcher instance
*/
_handleFile(file, stats, initialAdd) {
if (this.fsw.closed) {
return;
}
const dirname = sysPath.dirname(file);
const basename = sysPath.basename(file);
const parent = this.fsw._getWatchedDir(dirname);
// stats is always present
let prevStats = stats;
// if the file is already being watched, do nothing
if (parent.has(basename))
return;
const listener = async (path, newStats) => {
if (!this.fsw._throttle(THROTTLE_MODE_WATCH, file, 5))
return;
if (!newStats || newStats.mtimeMs === 0) {
try {
const newStats = await (0, promises_1.stat)(file);
if (this.fsw.closed)
return;
// Check that change event was not fired because of changed only accessTime.
const at = newStats.atimeMs;
const mt = newStats.mtimeMs;
if (!at || at <= mt || mt !== prevStats.mtimeMs) {
this.fsw._emit(EV.CHANGE, file, newStats);
}
if ((exports.isMacos || exports.isLinux || exports.isFreeBSD) && prevStats.ino !== newStats.ino) {
this.fsw._closeFile(path);
prevStats = newStats;
const closer = this._watchWithNodeFs(file, listener);
if (closer)
this.fsw._addPathCloser(path, closer);
}
else {
prevStats = newStats;
}
}
catch (error) {
// Fix issues where mtime is null but file is still present
this.fsw._remove(dirname, basename);
}
// add is about to be emitted if file not already tracked in parent
}
else if (parent.has(basename)) {
// Check that change event was not fired because of changed only accessTime.
const at = newStats.atimeMs;
const mt = newStats.mtimeMs;
if (!at || at <= mt || mt !== prevStats.mtimeMs) {
this.fsw._emit(EV.CHANGE, file, newStats);
}
prevStats = newStats;
}
};
// kick off the watcher
const closer = this._watchWithNodeFs(file, listener);
// emit an add event if we're supposed to
if (!(initialAdd && this.fsw.options.ignoreInitial) && this.fsw._isntIgnored(file)) {
if (!this.fsw._throttle(EV.ADD, file, 0))
return;
this.fsw._emit(EV.ADD, file, stats);
}
return closer;
}
/**
* Handle symlinks encountered while reading a dir.
* @param entry returned by readdirp
* @param directory path of dir being read
* @param path of this item
* @param item basename of this item
* @returns true if no more processing is needed for this entry.
*/
async _handleSymlink(entry, directory, path, item) {
if (this.fsw.closed) {
return;
}
const full = entry.fullPath;
const dir = this.fsw._getWatchedDir(directory);
if (!this.fsw.options.followSymlinks) {
// watch symlink directly (don't follow) and detect changes
this.fsw._incrReadyCount();
let linkPath;
try {
linkPath = await (0, promises_1.realpath)(path);
}
catch (e) {
this.fsw._emitReady();
return true;
}
if (this.fsw.closed)
return;
if (dir.has(item)) {
if (this.fsw._symlinkPaths.get(full) !== linkPath) {
this.fsw._symlinkPaths.set(full, linkPath);
this.fsw._emit(EV.CHANGE, path, entry.stats);
}
}
else {
dir.add(item);
this.fsw._symlinkPaths.set(full, linkPath);
this.fsw._emit(EV.ADD, path, entry.stats);
}
this.fsw._emitReady();
return true;
}
// don't follow the same symlink more than once
if (this.fsw._symlinkPaths.has(full)) {
return true;
}
this.fsw._symlinkPaths.set(full, true);
}
_handleRead(directory, initialAdd, wh, target, dir, depth, throttler) {
// Normalize the directory name on Windows
directory = sysPath.join(directory, '');
throttler = this.fsw._throttle('readdir', directory, 1000);
if (!throttler)
return;
const previous = this.fsw._getWatchedDir(wh.path);
const current = new Set();
let stream = this.fsw._readdirp(directory, {
fileFilter: (entry) => wh.filterPath(entry),
directoryFilter: (entry) => wh.filterDir(entry),
});
if (!stream)
return;
stream
.on(exports.STR_DATA, async (entry) => {
if (this.fsw.closed) {
stream = undefined;
return;
}
const item = entry.path;
let path = sysPath.join(directory, item);
current.add(item);
if (entry.stats.isSymbolicLink() &&
(await this._handleSymlink(entry, directory, path, item))) {
return;
}
if (this.fsw.closed) {
stream = undefined;
return;
}
// Files that present in current directory snapshot
// but absent in previous are added to watch list and
// emit `add` event.
if (item === target || (!target && !previous.has(item))) {
this.fsw._incrReadyCount();
// ensure relativeness of path is preserved in case of watcher reuse
path = sysPath.join(dir, sysPath.relative(dir, path));
this._addToNodeFs(path, initialAdd, wh, depth + 1);
}
})
.on(EV.ERROR, this._boundHandleError);
return new Promise((resolve, reject) => {
if (!stream)
return reject();
stream.once(exports.STR_END, () => {
if (this.fsw.closed) {
stream = undefined;
return;
}
const wasThrottled = throttler ? throttler.clear() : false;
resolve(undefined);
// Files that absent in current directory snapshot
// but present in previous emit `remove` event
// and are removed from @watched[directory].
previous
.getChildren()
.filter((item) => {
return item !== directory && !current.has(item);
})
.forEach((item) => {
this.fsw._remove(directory, item);
});
stream = undefined;
// one more time for any missed in case changes came in extremely quickly
if (wasThrottled)
this._handleRead(directory, false, wh, target, dir, depth, throttler);
});
});
}
/**
* Read directory to add / remove files from `@watched` list and re-read it on change.
* @param dir fs path
* @param stats
* @param initialAdd
* @param depth relative to user-supplied path
* @param target child path targeted for watch
* @param wh Common watch helpers for this path
* @param realpath
* @returns closer for the watcher instance.
*/
async _handleDir(dir, stats, initialAdd, depth, target, wh, realpath) {
const parentDir = this.fsw._getWatchedDir(sysPath.dirname(dir));
const tracked = parentDir.has(sysPath.basename(dir));
if (!(initialAdd && this.fsw.options.ignoreInitial) && !target && !tracked) {
this.fsw._emit(EV.ADD_DIR, dir, stats);
}
// ensure dir is tracked (harmless if redundant)
parentDir.add(sysPath.basename(dir));
this.fsw._getWatchedDir(dir);
let throttler;
let closer;
const oDepth = this.fsw.options.depth;
if ((oDepth == null || depth <= oDepth) && !this.fsw._symlinkPaths.has(realpath)) {
if (!target) {
await this._handleRead(dir, initialAdd, wh, target, dir, depth, throttler);
if (this.fsw.closed)
return;
}
closer = this._watchWithNodeFs(dir, (dirPath, stats) => {
// if current directory is removed, do nothing
if (stats && stats.mtimeMs === 0)
return;
this._handleRead(dirPath, false, wh, target, dir, depth, throttler);
});
}
return closer;
}
/**
* Handle added file, directory, or glob pattern.
* Delegates call to _handleFile / _handleDir after checks.
* @param path to file or ir
* @param initialAdd was the file added at watch instantiation?
* @param priorWh depth relative to user-supplied path
* @param depth Child path actually targeted for watch
* @param target Child path actually targeted for watch
*/
async _addToNodeFs(path, initialAdd, priorWh, depth, target) {
const ready = this.fsw._emitReady;
if (this.fsw._isIgnored(path) || this.fsw.closed) {
ready();
return false;
}
const wh = this.fsw._getWatchHelpers(path);
if (priorWh) {
wh.filterPath = (entry) => priorWh.filterPath(entry);
wh.filterDir = (entry) => priorWh.filterDir(entry);
}
// evaluate what is at the path we're being asked to watch
try {
const stats = await statMethods[wh.statMethod](wh.watchPath);
if (this.fsw.closed)
return;
if (this.fsw._isIgnored(wh.watchPath, stats)) {
ready();
return false;
}
const follow = this.fsw.options.followSymlinks;
let closer;
if (stats.isDirectory()) {
const absPath = sysPath.resolve(path);
const targetPath = follow ? await (0, promises_1.realpath)(path) : path;
if (this.fsw.closed)
return;
closer = await this._handleDir(wh.watchPath, stats, initialAdd, depth, target, wh, targetPath);
if (this.fsw.closed)
return;
// preserve this symlink's target path
if (absPath !== targetPath && targetPath !== undefined) {
this.fsw._symlinkPaths.set(absPath, targetPath);
}
}
else if (stats.isSymbolicLink()) {
const targetPath = follow ? await (0, promises_1.realpath)(path) : path;
if (this.fsw.closed)
return;
const parent = sysPath.dirname(wh.watchPath);
this.fsw._getWatchedDir(parent).add(wh.watchPath);
this.fsw._emit(EV.ADD, wh.watchPath, stats);
closer = await this._handleDir(parent, stats, initialAdd, depth, path, wh, targetPath);
if (this.fsw.closed)
return;
// preserve this symlink's target path
if (targetPath !== undefined) {
this.fsw._symlinkPaths.set(sysPath.resolve(path), targetPath);
}
}
else {
closer = this._handleFile(wh.watchPath, stats, initialAdd);
}
ready();
if (closer)
this.fsw._addPathCloser(path, closer);
return false;
}
catch (error) {
if (this.fsw._handleError(error)) {
ready();
return path;
}
}
}
}
exports.NodeFsHandler = NodeFsHandler;
+215
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/*! chokidar - MIT License (c) 2012 Paul Miller (paulmillr.com) */
import { Stats } from 'fs';
import { EventEmitter } from 'events';
import { ReaddirpStream, ReaddirpOptions, EntryInfo } from 'readdirp';
import { NodeFsHandler, EventName, Path, EVENTS as EV, WatchHandlers } from './handler.js';
type AWF = {
stabilityThreshold: number;
pollInterval: number;
};
type BasicOpts = {
persistent: boolean;
ignoreInitial: boolean;
followSymlinks: boolean;
cwd?: string;
usePolling: boolean;
interval: number;
binaryInterval: number;
alwaysStat?: boolean;
depth?: number;
ignorePermissionErrors: boolean;
atomic: boolean | number;
};
export type Throttler = {
timeoutObject: NodeJS.Timeout;
clear: () => void;
count: number;
};
export type ChokidarOptions = Partial<BasicOpts & {
ignored: Matcher | Matcher[];
awaitWriteFinish: boolean | Partial<AWF>;
}>;
export type FSWInstanceOptions = BasicOpts & {
ignored: Matcher[];
awaitWriteFinish: false | AWF;
};
export type ThrottleType = 'readdir' | 'watch' | 'add' | 'remove' | 'change';
export type EmitArgs = [path: Path, stats?: Stats];
export type EmitErrorArgs = [error: Error, stats?: Stats];
export type EmitArgsWithName = [event: EventName, ...EmitArgs];
export type MatchFunction = (val: string, stats?: Stats) => boolean;
export interface MatcherObject {
path: string;
recursive?: boolean;
}
export type Matcher = string | RegExp | MatchFunction | MatcherObject;
/**
* Directory entry.
*/
declare class DirEntry {
path: Path;
_removeWatcher: (dir: string, base: string) => void;
items: Set<Path>;
constructor(dir: Path, removeWatcher: (dir: string, base: string) => void);
add(item: string): void;
remove(item: string): Promise<void>;
has(item: string): boolean | undefined;
getChildren(): string[];
dispose(): void;
}
export declare class WatchHelper {
fsw: FSWatcher;
path: string;
watchPath: string;
fullWatchPath: string;
dirParts: string[][];
followSymlinks: boolean;
statMethod: 'stat' | 'lstat';
constructor(path: string, follow: boolean, fsw: FSWatcher);
entryPath(entry: EntryInfo): Path;
filterPath(entry: EntryInfo): boolean;
filterDir(entry: EntryInfo): boolean;
}
export interface FSWatcherKnownEventMap {
[EV.READY]: [];
[EV.RAW]: Parameters<WatchHandlers['rawEmitter']>;
[EV.ERROR]: Parameters<WatchHandlers['errHandler']>;
[EV.ALL]: [event: EventName, ...EmitArgs];
}
export type FSWatcherEventMap = FSWatcherKnownEventMap & {
[k in Exclude<EventName, keyof FSWatcherKnownEventMap>]: EmitArgs;
};
/**
* Watches files & directories for changes. Emitted events:
* `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `all`, `error`
*
* new FSWatcher()
* .add(directories)
* .on('add', path => log('File', path, 'was added'))
*/
export declare class FSWatcher extends EventEmitter<FSWatcherEventMap> {
closed: boolean;
options: FSWInstanceOptions;
_closers: Map<string, Array<any>>;
_ignoredPaths: Set<Matcher>;
_throttled: Map<ThrottleType, Map<any, any>>;
_streams: Set<ReaddirpStream>;
_symlinkPaths: Map<Path, string | boolean>;
_watched: Map<string, DirEntry>;
_pendingWrites: Map<string, any>;
_pendingUnlinks: Map<string, EmitArgsWithName>;
_readyCount: number;
_emitReady: () => void;
_closePromise?: Promise<void>;
_userIgnored?: MatchFunction;
_readyEmitted: boolean;
_emitRaw: WatchHandlers['rawEmitter'];
_boundRemove: (dir: string, item: string) => void;
_nodeFsHandler: NodeFsHandler;
constructor(_opts?: ChokidarOptions);
_addIgnoredPath(matcher: Matcher): void;
_removeIgnoredPath(matcher: Matcher): void;
/**
* Adds paths to be watched on an existing FSWatcher instance.
* @param paths_ file or file list. Other arguments are unused
*/
add(paths_: Path | Path[], _origAdd?: string, _internal?: boolean): FSWatcher;
/**
* Close watchers or start ignoring events from specified paths.
*/
unwatch(paths_: Path | Path[]): FSWatcher;
/**
* Close watchers and remove all listeners from watched paths.
*/
close(): Promise<void>;
/**
* Expose list of watched paths
* @returns for chaining
*/
getWatched(): Record<string, string[]>;
emitWithAll(event: EventName, args: EmitArgs): void;
/**
* Normalize and emit events.
* Calling _emit DOES NOT MEAN emit() would be called!
* @param event Type of event
* @param path File or directory path
* @param stats arguments to be passed with event
* @returns the error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_emit(event: EventName, path: Path, stats?: Stats): Promise<this | undefined>;
/**
* Common handler for errors
* @returns The error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_handleError(error: Error): Error | boolean;
/**
* Helper utility for throttling
* @param actionType type being throttled
* @param path being acted upon
* @param timeout duration of time to suppress duplicate actions
* @returns tracking object or false if action should be suppressed
*/
_throttle(actionType: ThrottleType, path: Path, timeout: number): Throttler | false;
_incrReadyCount(): number;
/**
* Awaits write operation to finish.
* Polls a newly created file for size variations. When files size does not change for 'threshold' milliseconds calls callback.
* @param path being acted upon
* @param threshold Time in milliseconds a file size must be fixed before acknowledging write OP is finished
* @param event
* @param awfEmit Callback to be called when ready for event to be emitted.
*/
_awaitWriteFinish(path: Path, threshold: number, event: EventName, awfEmit: (err?: Error, stat?: Stats) => void): void;
/**
* Determines whether user has asked to ignore this path.
*/
_isIgnored(path: Path, stats?: Stats): boolean;
_isntIgnored(path: Path, stat?: Stats): boolean;
/**
* Provides a set of common helpers and properties relating to symlink handling.
* @param path file or directory pattern being watched
*/
_getWatchHelpers(path: Path): WatchHelper;
/**
* Provides directory tracking objects
* @param directory path of the directory
*/
_getWatchedDir(directory: string): DirEntry;
/**
* Check for read permissions: https://stackoverflow.com/a/11781404/1358405
*/
_hasReadPermissions(stats: Stats): boolean;
/**
* Handles emitting unlink events for
* files and directories, and via recursion, for
* files and directories within directories that are unlinked
* @param directory within which the following item is located
* @param item base path of item/directory
*/
_remove(directory: string, item: string, isDirectory?: boolean): void;
/**
* Closes all watchers for a path
*/
_closePath(path: Path): void;
/**
* Closes only file-specific watchers
*/
_closeFile(path: Path): void;
_addPathCloser(path: Path, closer: () => void): void;
_readdirp(root: Path, opts?: Partial<ReaddirpOptions>): ReaddirpStream | undefined;
}
/**
* Instantiates watcher with paths to be tracked.
* @param paths file / directory paths
* @param options opts, such as `atomic`, `awaitWriteFinish`, `ignored`, and others
* @returns an instance of FSWatcher for chaining.
* @example
* const watcher = watch('.').on('all', (event, path) => { console.log(event, path); });
* watch('.', { atomic: true, awaitWriteFinish: true, ignored: (f, stats) => stats?.isFile() && !f.endsWith('.js') })
*/
export declare function watch(paths: string | string[], options?: ChokidarOptions): FSWatcher;
declare const _default: {
watch: typeof watch;
FSWatcher: typeof FSWatcher;
};
export default _default;
+804
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@@ -0,0 +1,804 @@
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FSWatcher = exports.WatchHelper = void 0;
exports.watch = watch;
/*! chokidar - MIT License (c) 2012 Paul Miller (paulmillr.com) */
const fs_1 = require("fs");
const promises_1 = require("fs/promises");
const events_1 = require("events");
const sysPath = require("path");
const readdirp_1 = require("readdirp");
const handler_js_1 = require("./handler.js");
const SLASH = '/';
const SLASH_SLASH = '//';
const ONE_DOT = '.';
const TWO_DOTS = '..';
const STRING_TYPE = 'string';
const BACK_SLASH_RE = /\\/g;
const DOUBLE_SLASH_RE = /\/\//;
const DOT_RE = /\..*\.(sw[px])$|~$|\.subl.*\.tmp/;
const REPLACER_RE = /^\.[/\\]/;
function arrify(item) {
return Array.isArray(item) ? item : [item];
}
const isMatcherObject = (matcher) => typeof matcher === 'object' && matcher !== null && !(matcher instanceof RegExp);
function createPattern(matcher) {
if (typeof matcher === 'function')
return matcher;
if (typeof matcher === 'string')
return (string) => matcher === string;
if (matcher instanceof RegExp)
return (string) => matcher.test(string);
if (typeof matcher === 'object' && matcher !== null) {
return (string) => {
if (matcher.path === string)
return true;
if (matcher.recursive) {
const relative = sysPath.relative(matcher.path, string);
if (!relative) {
return false;
}
return !relative.startsWith('..') && !sysPath.isAbsolute(relative);
}
return false;
};
}
return () => false;
}
function normalizePath(path) {
if (typeof path !== 'string')
throw new Error('string expected');
path = sysPath.normalize(path);
path = path.replace(/\\/g, '/');
let prepend = false;
if (path.startsWith('//'))
prepend = true;
const DOUBLE_SLASH_RE = /\/\//;
while (path.match(DOUBLE_SLASH_RE))
path = path.replace(DOUBLE_SLASH_RE, '/');
if (prepend)
path = '/' + path;
return path;
}
function matchPatterns(patterns, testString, stats) {
const path = normalizePath(testString);
for (let index = 0; index < patterns.length; index++) {
const pattern = patterns[index];
if (pattern(path, stats)) {
return true;
}
}
return false;
}
function anymatch(matchers, testString) {
if (matchers == null) {
throw new TypeError('anymatch: specify first argument');
}
// Early cache for matchers.
const matchersArray = arrify(matchers);
const patterns = matchersArray.map((matcher) => createPattern(matcher));
if (testString == null) {
return (testString, stats) => {
return matchPatterns(patterns, testString, stats);
};
}
return matchPatterns(patterns, testString);
}
const unifyPaths = (paths_) => {
const paths = arrify(paths_).flat();
if (!paths.every((p) => typeof p === STRING_TYPE)) {
throw new TypeError(`Non-string provided as watch path: ${paths}`);
}
return paths.map(normalizePathToUnix);
};
// If SLASH_SLASH occurs at the beginning of path, it is not replaced
// because "//StoragePC/DrivePool/Movies" is a valid network path
const toUnix = (string) => {
let str = string.replace(BACK_SLASH_RE, SLASH);
let prepend = false;
if (str.startsWith(SLASH_SLASH)) {
prepend = true;
}
while (str.match(DOUBLE_SLASH_RE)) {
str = str.replace(DOUBLE_SLASH_RE, SLASH);
}
if (prepend) {
str = SLASH + str;
}
return str;
};
// Our version of upath.normalize
// TODO: this is not equal to path-normalize module - investigate why
const normalizePathToUnix = (path) => toUnix(sysPath.normalize(toUnix(path)));
// TODO: refactor
const normalizeIgnored = (cwd = '') => (path) => {
if (typeof path === 'string') {
return normalizePathToUnix(sysPath.isAbsolute(path) ? path : sysPath.join(cwd, path));
}
else {
return path;
}
};
const getAbsolutePath = (path, cwd) => {
if (sysPath.isAbsolute(path)) {
return path;
}
return sysPath.join(cwd, path);
};
const EMPTY_SET = Object.freeze(new Set());
/**
* Directory entry.
*/
class DirEntry {
constructor(dir, removeWatcher) {
this.path = dir;
this._removeWatcher = removeWatcher;
this.items = new Set();
}
add(item) {
const { items } = this;
if (!items)
return;
if (item !== ONE_DOT && item !== TWO_DOTS)
items.add(item);
}
async remove(item) {
const { items } = this;
if (!items)
return;
items.delete(item);
if (items.size > 0)
return;
const dir = this.path;
try {
await (0, promises_1.readdir)(dir);
}
catch (err) {
if (this._removeWatcher) {
this._removeWatcher(sysPath.dirname(dir), sysPath.basename(dir));
}
}
}
has(item) {
const { items } = this;
if (!items)
return;
return items.has(item);
}
getChildren() {
const { items } = this;
if (!items)
return [];
return [...items.values()];
}
dispose() {
this.items.clear();
this.path = '';
this._removeWatcher = handler_js_1.EMPTY_FN;
this.items = EMPTY_SET;
Object.freeze(this);
}
}
const STAT_METHOD_F = 'stat';
const STAT_METHOD_L = 'lstat';
class WatchHelper {
constructor(path, follow, fsw) {
this.fsw = fsw;
const watchPath = path;
this.path = path = path.replace(REPLACER_RE, '');
this.watchPath = watchPath;
this.fullWatchPath = sysPath.resolve(watchPath);
this.dirParts = [];
this.dirParts.forEach((parts) => {
if (parts.length > 1)
parts.pop();
});
this.followSymlinks = follow;
this.statMethod = follow ? STAT_METHOD_F : STAT_METHOD_L;
}
entryPath(entry) {
return sysPath.join(this.watchPath, sysPath.relative(this.watchPath, entry.fullPath));
}
filterPath(entry) {
const { stats } = entry;
if (stats && stats.isSymbolicLink())
return this.filterDir(entry);
const resolvedPath = this.entryPath(entry);
// TODO: what if stats is undefined? remove !
return this.fsw._isntIgnored(resolvedPath, stats) && this.fsw._hasReadPermissions(stats);
}
filterDir(entry) {
return this.fsw._isntIgnored(this.entryPath(entry), entry.stats);
}
}
exports.WatchHelper = WatchHelper;
/**
* Watches files & directories for changes. Emitted events:
* `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `all`, `error`
*
* new FSWatcher()
* .add(directories)
* .on('add', path => log('File', path, 'was added'))
*/
class FSWatcher extends events_1.EventEmitter {
// Not indenting methods for history sake; for now.
constructor(_opts = {}) {
super();
this.closed = false;
this._closers = new Map();
this._ignoredPaths = new Set();
this._throttled = new Map();
this._streams = new Set();
this._symlinkPaths = new Map();
this._watched = new Map();
this._pendingWrites = new Map();
this._pendingUnlinks = new Map();
this._readyCount = 0;
this._readyEmitted = false;
const awf = _opts.awaitWriteFinish;
const DEF_AWF = { stabilityThreshold: 2000, pollInterval: 100 };
const opts = {
// Defaults
persistent: true,
ignoreInitial: false,
ignorePermissionErrors: false,
interval: 100,
binaryInterval: 300,
followSymlinks: true,
usePolling: false,
// useAsync: false,
atomic: true, // NOTE: overwritten later (depends on usePolling)
..._opts,
// Change format
ignored: _opts.ignored ? arrify(_opts.ignored) : arrify([]),
awaitWriteFinish: awf === true ? DEF_AWF : typeof awf === 'object' ? { ...DEF_AWF, ...awf } : false,
};
// Always default to polling on IBM i because fs.watch() is not available on IBM i.
if (handler_js_1.isIBMi)
opts.usePolling = true;
// Editor atomic write normalization enabled by default with fs.watch
if (opts.atomic === undefined)
opts.atomic = !opts.usePolling;
// opts.atomic = typeof _opts.atomic === 'number' ? _opts.atomic : 100;
// Global override. Useful for developers, who need to force polling for all
// instances of chokidar, regardless of usage / dependency depth
const envPoll = process.env.CHOKIDAR_USEPOLLING;
if (envPoll !== undefined) {
const envLower = envPoll.toLowerCase();
if (envLower === 'false' || envLower === '0')
opts.usePolling = false;
else if (envLower === 'true' || envLower === '1')
opts.usePolling = true;
else
opts.usePolling = !!envLower;
}
const envInterval = process.env.CHOKIDAR_INTERVAL;
if (envInterval)
opts.interval = Number.parseInt(envInterval, 10);
// This is done to emit ready only once, but each 'add' will increase that?
let readyCalls = 0;
this._emitReady = () => {
readyCalls++;
if (readyCalls >= this._readyCount) {
this._emitReady = handler_js_1.EMPTY_FN;
this._readyEmitted = true;
// use process.nextTick to allow time for listener to be bound
process.nextTick(() => this.emit(handler_js_1.EVENTS.READY));
}
};
this._emitRaw = (...args) => this.emit(handler_js_1.EVENTS.RAW, ...args);
this._boundRemove = this._remove.bind(this);
this.options = opts;
this._nodeFsHandler = new handler_js_1.NodeFsHandler(this);
// Youre frozen when your hearts not open.
Object.freeze(opts);
}
_addIgnoredPath(matcher) {
if (isMatcherObject(matcher)) {
// return early if we already have a deeply equal matcher object
for (const ignored of this._ignoredPaths) {
if (isMatcherObject(ignored) &&
ignored.path === matcher.path &&
ignored.recursive === matcher.recursive) {
return;
}
}
}
this._ignoredPaths.add(matcher);
}
_removeIgnoredPath(matcher) {
this._ignoredPaths.delete(matcher);
// now find any matcher objects with the matcher as path
if (typeof matcher === 'string') {
for (const ignored of this._ignoredPaths) {
// TODO (43081j): make this more efficient.
// probably just make a `this._ignoredDirectories` or some
// such thing.
if (isMatcherObject(ignored) && ignored.path === matcher) {
this._ignoredPaths.delete(ignored);
}
}
}
}
// Public methods
/**
* Adds paths to be watched on an existing FSWatcher instance.
* @param paths_ file or file list. Other arguments are unused
*/
add(paths_, _origAdd, _internal) {
const { cwd } = this.options;
this.closed = false;
this._closePromise = undefined;
let paths = unifyPaths(paths_);
if (cwd) {
paths = paths.map((path) => {
const absPath = getAbsolutePath(path, cwd);
// Check `path` instead of `absPath` because the cwd portion can't be a glob
return absPath;
});
}
paths.forEach((path) => {
this._removeIgnoredPath(path);
});
this._userIgnored = undefined;
if (!this._readyCount)
this._readyCount = 0;
this._readyCount += paths.length;
Promise.all(paths.map(async (path) => {
const res = await this._nodeFsHandler._addToNodeFs(path, !_internal, undefined, 0, _origAdd);
if (res)
this._emitReady();
return res;
})).then((results) => {
if (this.closed)
return;
results.forEach((item) => {
if (item)
this.add(sysPath.dirname(item), sysPath.basename(_origAdd || item));
});
});
return this;
}
/**
* Close watchers or start ignoring events from specified paths.
*/
unwatch(paths_) {
if (this.closed)
return this;
const paths = unifyPaths(paths_);
const { cwd } = this.options;
paths.forEach((path) => {
// convert to absolute path unless relative path already matches
if (!sysPath.isAbsolute(path) && !this._closers.has(path)) {
if (cwd)
path = sysPath.join(cwd, path);
path = sysPath.resolve(path);
}
this._closePath(path);
this._addIgnoredPath(path);
if (this._watched.has(path)) {
this._addIgnoredPath({
path,
recursive: true,
});
}
// reset the cached userIgnored anymatch fn
// to make ignoredPaths changes effective
this._userIgnored = undefined;
});
return this;
}
/**
* Close watchers and remove all listeners from watched paths.
*/
close() {
if (this._closePromise) {
return this._closePromise;
}
this.closed = true;
// Memory management.
this.removeAllListeners();
const closers = [];
this._closers.forEach((closerList) => closerList.forEach((closer) => {
const promise = closer();
if (promise instanceof Promise)
closers.push(promise);
}));
this._streams.forEach((stream) => stream.destroy());
this._userIgnored = undefined;
this._readyCount = 0;
this._readyEmitted = false;
this._watched.forEach((dirent) => dirent.dispose());
this._closers.clear();
this._watched.clear();
this._streams.clear();
this._symlinkPaths.clear();
this._throttled.clear();
this._closePromise = closers.length
? Promise.all(closers).then(() => undefined)
: Promise.resolve();
return this._closePromise;
}
/**
* Expose list of watched paths
* @returns for chaining
*/
getWatched() {
const watchList = {};
this._watched.forEach((entry, dir) => {
const key = this.options.cwd ? sysPath.relative(this.options.cwd, dir) : dir;
const index = key || ONE_DOT;
watchList[index] = entry.getChildren().sort();
});
return watchList;
}
emitWithAll(event, args) {
this.emit(event, ...args);
if (event !== handler_js_1.EVENTS.ERROR)
this.emit(handler_js_1.EVENTS.ALL, event, ...args);
}
// Common helpers
// --------------
/**
* Normalize and emit events.
* Calling _emit DOES NOT MEAN emit() would be called!
* @param event Type of event
* @param path File or directory path
* @param stats arguments to be passed with event
* @returns the error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
async _emit(event, path, stats) {
if (this.closed)
return;
const opts = this.options;
if (handler_js_1.isWindows)
path = sysPath.normalize(path);
if (opts.cwd)
path = sysPath.relative(opts.cwd, path);
const args = [path];
if (stats != null)
args.push(stats);
const awf = opts.awaitWriteFinish;
let pw;
if (awf && (pw = this._pendingWrites.get(path))) {
pw.lastChange = new Date();
return this;
}
if (opts.atomic) {
if (event === handler_js_1.EVENTS.UNLINK) {
this._pendingUnlinks.set(path, [event, ...args]);
setTimeout(() => {
this._pendingUnlinks.forEach((entry, path) => {
this.emit(...entry);
this.emit(handler_js_1.EVENTS.ALL, ...entry);
this._pendingUnlinks.delete(path);
});
}, typeof opts.atomic === 'number' ? opts.atomic : 100);
return this;
}
if (event === handler_js_1.EVENTS.ADD && this._pendingUnlinks.has(path)) {
event = handler_js_1.EVENTS.CHANGE;
this._pendingUnlinks.delete(path);
}
}
if (awf && (event === handler_js_1.EVENTS.ADD || event === handler_js_1.EVENTS.CHANGE) && this._readyEmitted) {
const awfEmit = (err, stats) => {
if (err) {
event = handler_js_1.EVENTS.ERROR;
args[0] = err;
this.emitWithAll(event, args);
}
else if (stats) {
// if stats doesn't exist the file must have been deleted
if (args.length > 1) {
args[1] = stats;
}
else {
args.push(stats);
}
this.emitWithAll(event, args);
}
};
this._awaitWriteFinish(path, awf.stabilityThreshold, event, awfEmit);
return this;
}
if (event === handler_js_1.EVENTS.CHANGE) {
const isThrottled = !this._throttle(handler_js_1.EVENTS.CHANGE, path, 50);
if (isThrottled)
return this;
}
if (opts.alwaysStat &&
stats === undefined &&
(event === handler_js_1.EVENTS.ADD || event === handler_js_1.EVENTS.ADD_DIR || event === handler_js_1.EVENTS.CHANGE)) {
const fullPath = opts.cwd ? sysPath.join(opts.cwd, path) : path;
let stats;
try {
stats = await (0, promises_1.stat)(fullPath);
}
catch (err) {
// do nothing
}
// Suppress event when fs_stat fails, to avoid sending undefined 'stat'
if (!stats || this.closed)
return;
args.push(stats);
}
this.emitWithAll(event, args);
return this;
}
/**
* Common handler for errors
* @returns The error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_handleError(error) {
const code = error && error.code;
if (error &&
code !== 'ENOENT' &&
code !== 'ENOTDIR' &&
(!this.options.ignorePermissionErrors || (code !== 'EPERM' && code !== 'EACCES'))) {
this.emit(handler_js_1.EVENTS.ERROR, error);
}
return error || this.closed;
}
/**
* Helper utility for throttling
* @param actionType type being throttled
* @param path being acted upon
* @param timeout duration of time to suppress duplicate actions
* @returns tracking object or false if action should be suppressed
*/
_throttle(actionType, path, timeout) {
if (!this._throttled.has(actionType)) {
this._throttled.set(actionType, new Map());
}
const action = this._throttled.get(actionType);
if (!action)
throw new Error('invalid throttle');
const actionPath = action.get(path);
if (actionPath) {
actionPath.count++;
return false;
}
// eslint-disable-next-line prefer-const
let timeoutObject;
const clear = () => {
const item = action.get(path);
const count = item ? item.count : 0;
action.delete(path);
clearTimeout(timeoutObject);
if (item)
clearTimeout(item.timeoutObject);
return count;
};
timeoutObject = setTimeout(clear, timeout);
const thr = { timeoutObject, clear, count: 0 };
action.set(path, thr);
return thr;
}
_incrReadyCount() {
return this._readyCount++;
}
/**
* Awaits write operation to finish.
* Polls a newly created file for size variations. When files size does not change for 'threshold' milliseconds calls callback.
* @param path being acted upon
* @param threshold Time in milliseconds a file size must be fixed before acknowledging write OP is finished
* @param event
* @param awfEmit Callback to be called when ready for event to be emitted.
*/
_awaitWriteFinish(path, threshold, event, awfEmit) {
const awf = this.options.awaitWriteFinish;
if (typeof awf !== 'object')
return;
const pollInterval = awf.pollInterval;
let timeoutHandler;
let fullPath = path;
if (this.options.cwd && !sysPath.isAbsolute(path)) {
fullPath = sysPath.join(this.options.cwd, path);
}
const now = new Date();
const writes = this._pendingWrites;
function awaitWriteFinishFn(prevStat) {
(0, fs_1.stat)(fullPath, (err, curStat) => {
if (err || !writes.has(path)) {
if (err && err.code !== 'ENOENT')
awfEmit(err);
return;
}
const now = Number(new Date());
if (prevStat && curStat.size !== prevStat.size) {
writes.get(path).lastChange = now;
}
const pw = writes.get(path);
const df = now - pw.lastChange;
if (df >= threshold) {
writes.delete(path);
awfEmit(undefined, curStat);
}
else {
timeoutHandler = setTimeout(awaitWriteFinishFn, pollInterval, curStat);
}
});
}
if (!writes.has(path)) {
writes.set(path, {
lastChange: now,
cancelWait: () => {
writes.delete(path);
clearTimeout(timeoutHandler);
return event;
},
});
timeoutHandler = setTimeout(awaitWriteFinishFn, pollInterval);
}
}
/**
* Determines whether user has asked to ignore this path.
*/
_isIgnored(path, stats) {
if (this.options.atomic && DOT_RE.test(path))
return true;
if (!this._userIgnored) {
const { cwd } = this.options;
const ign = this.options.ignored;
const ignored = (ign || []).map(normalizeIgnored(cwd));
const ignoredPaths = [...this._ignoredPaths];
const list = [...ignoredPaths.map(normalizeIgnored(cwd)), ...ignored];
this._userIgnored = anymatch(list, undefined);
}
return this._userIgnored(path, stats);
}
_isntIgnored(path, stat) {
return !this._isIgnored(path, stat);
}
/**
* Provides a set of common helpers and properties relating to symlink handling.
* @param path file or directory pattern being watched
*/
_getWatchHelpers(path) {
return new WatchHelper(path, this.options.followSymlinks, this);
}
// Directory helpers
// -----------------
/**
* Provides directory tracking objects
* @param directory path of the directory
*/
_getWatchedDir(directory) {
const dir = sysPath.resolve(directory);
if (!this._watched.has(dir))
this._watched.set(dir, new DirEntry(dir, this._boundRemove));
return this._watched.get(dir);
}
// File helpers
// ------------
/**
* Check for read permissions: https://stackoverflow.com/a/11781404/1358405
*/
_hasReadPermissions(stats) {
if (this.options.ignorePermissionErrors)
return true;
return Boolean(Number(stats.mode) & 0o400);
}
/**
* Handles emitting unlink events for
* files and directories, and via recursion, for
* files and directories within directories that are unlinked
* @param directory within which the following item is located
* @param item base path of item/directory
*/
_remove(directory, item, isDirectory) {
// if what is being deleted is a directory, get that directory's paths
// for recursive deleting and cleaning of watched object
// if it is not a directory, nestedDirectoryChildren will be empty array
const path = sysPath.join(directory, item);
const fullPath = sysPath.resolve(path);
isDirectory =
isDirectory != null ? isDirectory : this._watched.has(path) || this._watched.has(fullPath);
// prevent duplicate handling in case of arriving here nearly simultaneously
// via multiple paths (such as _handleFile and _handleDir)
if (!this._throttle('remove', path, 100))
return;
// if the only watched file is removed, watch for its return
if (!isDirectory && this._watched.size === 1) {
this.add(directory, item, true);
}
// This will create a new entry in the watched object in either case
// so we got to do the directory check beforehand
const wp = this._getWatchedDir(path);
const nestedDirectoryChildren = wp.getChildren();
// Recursively remove children directories / files.
nestedDirectoryChildren.forEach((nested) => this._remove(path, nested));
// Check if item was on the watched list and remove it
const parent = this._getWatchedDir(directory);
const wasTracked = parent.has(item);
parent.remove(item);
// Fixes issue #1042 -> Relative paths were detected and added as symlinks
// (https://github.com/paulmillr/chokidar/blob/e1753ddbc9571bdc33b4a4af172d52cb6e611c10/lib/nodefs-handler.js#L612),
// but never removed from the map in case the path was deleted.
// This leads to an incorrect state if the path was recreated:
// https://github.com/paulmillr/chokidar/blob/e1753ddbc9571bdc33b4a4af172d52cb6e611c10/lib/nodefs-handler.js#L553
if (this._symlinkPaths.has(fullPath)) {
this._symlinkPaths.delete(fullPath);
}
// If we wait for this file to be fully written, cancel the wait.
let relPath = path;
if (this.options.cwd)
relPath = sysPath.relative(this.options.cwd, path);
if (this.options.awaitWriteFinish && this._pendingWrites.has(relPath)) {
const event = this._pendingWrites.get(relPath).cancelWait();
if (event === handler_js_1.EVENTS.ADD)
return;
}
// The Entry will either be a directory that just got removed
// or a bogus entry to a file, in either case we have to remove it
this._watched.delete(path);
this._watched.delete(fullPath);
const eventName = isDirectory ? handler_js_1.EVENTS.UNLINK_DIR : handler_js_1.EVENTS.UNLINK;
if (wasTracked && !this._isIgnored(path))
this._emit(eventName, path);
// Avoid conflicts if we later create another file with the same name
this._closePath(path);
}
/**
* Closes all watchers for a path
*/
_closePath(path) {
this._closeFile(path);
const dir = sysPath.dirname(path);
this._getWatchedDir(dir).remove(sysPath.basename(path));
}
/**
* Closes only file-specific watchers
*/
_closeFile(path) {
const closers = this._closers.get(path);
if (!closers)
return;
closers.forEach((closer) => closer());
this._closers.delete(path);
}
_addPathCloser(path, closer) {
if (!closer)
return;
let list = this._closers.get(path);
if (!list) {
list = [];
this._closers.set(path, list);
}
list.push(closer);
}
_readdirp(root, opts) {
if (this.closed)
return;
const options = { type: handler_js_1.EVENTS.ALL, alwaysStat: true, lstat: true, ...opts, depth: 0 };
let stream = (0, readdirp_1.readdirp)(root, options);
this._streams.add(stream);
stream.once(handler_js_1.STR_CLOSE, () => {
stream = undefined;
});
stream.once(handler_js_1.STR_END, () => {
if (stream) {
this._streams.delete(stream);
stream = undefined;
}
});
return stream;
}
}
exports.FSWatcher = FSWatcher;
/**
* Instantiates watcher with paths to be tracked.
* @param paths file / directory paths
* @param options opts, such as `atomic`, `awaitWriteFinish`, `ignored`, and others
* @returns an instance of FSWatcher for chaining.
* @example
* const watcher = watch('.').on('all', (event, path) => { console.log(event, path); });
* watch('.', { atomic: true, awaitWriteFinish: true, ignored: (f, stats) => stats?.isFile() && !f.endsWith('.js') })
*/
function watch(paths, options = {}) {
const watcher = new FSWatcher(options);
watcher.add(paths);
return watcher;
}
exports.default = { watch, FSWatcher };
+69
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{
"name": "chokidar",
"description": "Minimal and efficient cross-platform file watching library",
"version": "4.0.3",
"homepage": "https://github.com/paulmillr/chokidar",
"author": "Paul Miller (https://paulmillr.com)",
"files": [
"index.js",
"index.d.ts",
"handler.js",
"handler.d.ts",
"esm"
],
"main": "./index.js",
"module": "./esm/index.js",
"types": "./index.d.ts",
"exports": {
".": {
"import": "./esm/index.js",
"require": "./index.js"
},
"./handler.js": {
"import": "./esm/handler.js",
"require": "./handler.js"
}
},
"dependencies": {
"readdirp": "^4.0.1"
},
"devDependencies": {
"@paulmillr/jsbt": "0.2.1",
"@types/node": "20.14.8",
"chai": "4.3.4",
"prettier": "3.1.1",
"rimraf": "5.0.5",
"sinon": "12.0.1",
"sinon-chai": "3.7.0",
"typescript": "5.5.2",
"upath": "2.0.1"
},
"sideEffects": false,
"engines": {
"node": ">= 14.16.0"
},
"repository": {
"type": "git",
"url": "git+https://github.com/paulmillr/chokidar.git"
},
"bugs": {
"url": "https://github.com/paulmillr/chokidar/issues"
},
"license": "MIT",
"scripts": {
"build": "tsc && tsc -p tsconfig.esm.json",
"lint": "prettier --check src",
"format": "prettier --write src",
"test": "node --test"
},
"keywords": [
"fs",
"watch",
"watchFile",
"watcher",
"watching",
"file",
"fsevents"
],
"funding": "https://paulmillr.com/funding/"
}
+60
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0.5.4 / 2021-12-10
==================
* deps: safe-buffer@5.2.1
0.5.3 / 2018-12-17
==================
* Use `safe-buffer` for improved Buffer API
0.5.2 / 2016-12-08
==================
* Fix `parse` to accept any linear whitespace character
0.5.1 / 2016-01-17
==================
* perf: enable strict mode
0.5.0 / 2014-10-11
==================
* Add `parse` function
0.4.0 / 2014-09-21
==================
* Expand non-Unicode `filename` to the full ISO-8859-1 charset
0.3.0 / 2014-09-20
==================
* Add `fallback` option
* Add `type` option
0.2.0 / 2014-09-19
==================
* Reduce ambiguity of file names with hex escape in buggy browsers
0.1.2 / 2014-09-19
==================
* Fix periodic invalid Unicode filename header
0.1.1 / 2014-09-19
==================
* Fix invalid characters appearing in `filename*` parameter
0.1.0 / 2014-09-18
==================
* Make the `filename` argument optional
0.0.0 / 2014-09-18
==================
* Initial release
+22
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@@ -0,0 +1,22 @@
(The MIT License)
Copyright (c) 2014-2017 Douglas Christopher Wilson
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+142
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# content-disposition
[![NPM Version][npm-image]][npm-url]
[![NPM Downloads][downloads-image]][downloads-url]
[![Node.js Version][node-version-image]][node-version-url]
[![Build Status][github-actions-ci-image]][github-actions-ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
Create and parse HTTP `Content-Disposition` header
## Installation
```sh
$ npm install content-disposition
```
## API
```js
var contentDisposition = require('content-disposition')
```
### contentDisposition(filename, options)
Create an attachment `Content-Disposition` header value using the given file name,
if supplied. The `filename` is optional and if no file name is desired, but you
want to specify `options`, set `filename` to `undefined`.
```js
res.setHeader('Content-Disposition', contentDisposition('∫ maths.pdf'))
```
**note** HTTP headers are of the ISO-8859-1 character set. If you are writing this
header through a means different from `setHeader` in Node.js, you'll want to specify
the `'binary'` encoding in Node.js.
#### Options
`contentDisposition` accepts these properties in the options object.
##### fallback
If the `filename` option is outside ISO-8859-1, then the file name is actually
stored in a supplemental field for clients that support Unicode file names and
a ISO-8859-1 version of the file name is automatically generated.
This specifies the ISO-8859-1 file name to override the automatic generation or
disables the generation all together, defaults to `true`.
- A string will specify the ISO-8859-1 file name to use in place of automatic
generation.
- `false` will disable including a ISO-8859-1 file name and only include the
Unicode version (unless the file name is already ISO-8859-1).
- `true` will enable automatic generation if the file name is outside ISO-8859-1.
If the `filename` option is ISO-8859-1 and this option is specified and has a
different value, then the `filename` option is encoded in the extended field
and this set as the fallback field, even though they are both ISO-8859-1.
##### type
Specifies the disposition type, defaults to `"attachment"`. This can also be
`"inline"`, or any other value (all values except inline are treated like
`attachment`, but can convey additional information if both parties agree to
it). The type is normalized to lower-case.
### contentDisposition.parse(string)
```js
var disposition = contentDisposition.parse('attachment; filename="EURO rates.txt"; filename*=UTF-8\'\'%e2%82%ac%20rates.txt')
```
Parse a `Content-Disposition` header string. This automatically handles extended
("Unicode") parameters by decoding them and providing them under the standard
parameter name. This will return an object with the following properties (examples
are shown for the string `'attachment; filename="EURO rates.txt"; filename*=UTF-8\'\'%e2%82%ac%20rates.txt'`):
- `type`: The disposition type (always lower case). Example: `'attachment'`
- `parameters`: An object of the parameters in the disposition (name of parameter
always lower case and extended versions replace non-extended versions). Example:
`{filename: "€ rates.txt"}`
## Examples
### Send a file for download
```js
var contentDisposition = require('content-disposition')
var destroy = require('destroy')
var fs = require('fs')
var http = require('http')
var onFinished = require('on-finished')
var filePath = '/path/to/public/plans.pdf'
http.createServer(function onRequest (req, res) {
// set headers
res.setHeader('Content-Type', 'application/pdf')
res.setHeader('Content-Disposition', contentDisposition(filePath))
// send file
var stream = fs.createReadStream(filePath)
stream.pipe(res)
onFinished(res, function () {
destroy(stream)
})
})
```
## Testing
```sh
$ npm test
```
## References
- [RFC 2616: Hypertext Transfer Protocol -- HTTP/1.1][rfc-2616]
- [RFC 5987: Character Set and Language Encoding for Hypertext Transfer Protocol (HTTP) Header Field Parameters][rfc-5987]
- [RFC 6266: Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)][rfc-6266]
- [Test Cases for HTTP Content-Disposition header field (RFC 6266) and the Encodings defined in RFCs 2047, 2231 and 5987][tc-2231]
[rfc-2616]: https://tools.ietf.org/html/rfc2616
[rfc-5987]: https://tools.ietf.org/html/rfc5987
[rfc-6266]: https://tools.ietf.org/html/rfc6266
[tc-2231]: http://greenbytes.de/tech/tc2231/
## License
[MIT](LICENSE)
[npm-image]: https://img.shields.io/npm/v/content-disposition.svg
[npm-url]: https://npmjs.org/package/content-disposition
[node-version-image]: https://img.shields.io/node/v/content-disposition.svg
[node-version-url]: https://nodejs.org/en/download
[coveralls-image]: https://img.shields.io/coveralls/jshttp/content-disposition.svg
[coveralls-url]: https://coveralls.io/r/jshttp/content-disposition?branch=master
[downloads-image]: https://img.shields.io/npm/dm/content-disposition.svg
[downloads-url]: https://npmjs.org/package/content-disposition
[github-actions-ci-image]: https://img.shields.io/github/workflow/status/jshttp/content-disposition/ci/master?label=ci
[github-actions-ci-url]: https://github.com/jshttp/content-disposition?query=workflow%3Aci
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/*!
* content-disposition
* Copyright(c) 2014-2017 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module exports.
* @public
*/
module.exports = contentDisposition
module.exports.parse = parse
/**
* Module dependencies.
* @private
*/
var basename = require('path').basename
var Buffer = require('safe-buffer').Buffer
/**
* RegExp to match non attr-char, *after* encodeURIComponent (i.e. not including "%")
* @private
*/
var ENCODE_URL_ATTR_CHAR_REGEXP = /[\x00-\x20"'()*,/:;<=>?@[\\\]{}\x7f]/g // eslint-disable-line no-control-regex
/**
* RegExp to match percent encoding escape.
* @private
*/
var HEX_ESCAPE_REGEXP = /%[0-9A-Fa-f]{2}/
var HEX_ESCAPE_REPLACE_REGEXP = /%([0-9A-Fa-f]{2})/g
/**
* RegExp to match non-latin1 characters.
* @private
*/
var NON_LATIN1_REGEXP = /[^\x20-\x7e\xa0-\xff]/g
/**
* RegExp to match quoted-pair in RFC 2616
*
* quoted-pair = "\" CHAR
* CHAR = <any US-ASCII character (octets 0 - 127)>
* @private
*/
var QESC_REGEXP = /\\([\u0000-\u007f])/g // eslint-disable-line no-control-regex
/**
* RegExp to match chars that must be quoted-pair in RFC 2616
* @private
*/
var QUOTE_REGEXP = /([\\"])/g
/**
* RegExp for various RFC 2616 grammar
*
* parameter = token "=" ( token | quoted-string )
* token = 1*<any CHAR except CTLs or separators>
* separators = "(" | ")" | "<" | ">" | "@"
* | "," | ";" | ":" | "\" | <">
* | "/" | "[" | "]" | "?" | "="
* | "{" | "}" | SP | HT
* quoted-string = ( <"> *(qdtext | quoted-pair ) <"> )
* qdtext = <any TEXT except <">>
* quoted-pair = "\" CHAR
* CHAR = <any US-ASCII character (octets 0 - 127)>
* TEXT = <any OCTET except CTLs, but including LWS>
* LWS = [CRLF] 1*( SP | HT )
* CRLF = CR LF
* CR = <US-ASCII CR, carriage return (13)>
* LF = <US-ASCII LF, linefeed (10)>
* SP = <US-ASCII SP, space (32)>
* HT = <US-ASCII HT, horizontal-tab (9)>
* CTL = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
* OCTET = <any 8-bit sequence of data>
* @private
*/
var PARAM_REGEXP = /;[\x09\x20]*([!#$%&'*+.0-9A-Z^_`a-z|~-]+)[\x09\x20]*=[\x09\x20]*("(?:[\x20!\x23-\x5b\x5d-\x7e\x80-\xff]|\\[\x20-\x7e])*"|[!#$%&'*+.0-9A-Z^_`a-z|~-]+)[\x09\x20]*/g // eslint-disable-line no-control-regex
var TEXT_REGEXP = /^[\x20-\x7e\x80-\xff]+$/
var TOKEN_REGEXP = /^[!#$%&'*+.0-9A-Z^_`a-z|~-]+$/
/**
* RegExp for various RFC 5987 grammar
*
* ext-value = charset "'" [ language ] "'" value-chars
* charset = "UTF-8" / "ISO-8859-1" / mime-charset
* mime-charset = 1*mime-charsetc
* mime-charsetc = ALPHA / DIGIT
* / "!" / "#" / "$" / "%" / "&"
* / "+" / "-" / "^" / "_" / "`"
* / "{" / "}" / "~"
* language = ( 2*3ALPHA [ extlang ] )
* / 4ALPHA
* / 5*8ALPHA
* extlang = *3( "-" 3ALPHA )
* value-chars = *( pct-encoded / attr-char )
* pct-encoded = "%" HEXDIG HEXDIG
* attr-char = ALPHA / DIGIT
* / "!" / "#" / "$" / "&" / "+" / "-" / "."
* / "^" / "_" / "`" / "|" / "~"
* @private
*/
var EXT_VALUE_REGEXP = /^([A-Za-z0-9!#$%&+\-^_`{}~]+)'(?:[A-Za-z]{2,3}(?:-[A-Za-z]{3}){0,3}|[A-Za-z]{4,8}|)'((?:%[0-9A-Fa-f]{2}|[A-Za-z0-9!#$&+.^_`|~-])+)$/
/**
* RegExp for various RFC 6266 grammar
*
* disposition-type = "inline" | "attachment" | disp-ext-type
* disp-ext-type = token
* disposition-parm = filename-parm | disp-ext-parm
* filename-parm = "filename" "=" value
* | "filename*" "=" ext-value
* disp-ext-parm = token "=" value
* | ext-token "=" ext-value
* ext-token = <the characters in token, followed by "*">
* @private
*/
var DISPOSITION_TYPE_REGEXP = /^([!#$%&'*+.0-9A-Z^_`a-z|~-]+)[\x09\x20]*(?:$|;)/ // eslint-disable-line no-control-regex
/**
* Create an attachment Content-Disposition header.
*
* @param {string} [filename]
* @param {object} [options]
* @param {string} [options.type=attachment]
* @param {string|boolean} [options.fallback=true]
* @return {string}
* @public
*/
function contentDisposition (filename, options) {
var opts = options || {}
// get type
var type = opts.type || 'attachment'
// get parameters
var params = createparams(filename, opts.fallback)
// format into string
return format(new ContentDisposition(type, params))
}
/**
* Create parameters object from filename and fallback.
*
* @param {string} [filename]
* @param {string|boolean} [fallback=true]
* @return {object}
* @private
*/
function createparams (filename, fallback) {
if (filename === undefined) {
return
}
var params = {}
if (typeof filename !== 'string') {
throw new TypeError('filename must be a string')
}
// fallback defaults to true
if (fallback === undefined) {
fallback = true
}
if (typeof fallback !== 'string' && typeof fallback !== 'boolean') {
throw new TypeError('fallback must be a string or boolean')
}
if (typeof fallback === 'string' && NON_LATIN1_REGEXP.test(fallback)) {
throw new TypeError('fallback must be ISO-8859-1 string')
}
// restrict to file base name
var name = basename(filename)
// determine if name is suitable for quoted string
var isQuotedString = TEXT_REGEXP.test(name)
// generate fallback name
var fallbackName = typeof fallback !== 'string'
? fallback && getlatin1(name)
: basename(fallback)
var hasFallback = typeof fallbackName === 'string' && fallbackName !== name
// set extended filename parameter
if (hasFallback || !isQuotedString || HEX_ESCAPE_REGEXP.test(name)) {
params['filename*'] = name
}
// set filename parameter
if (isQuotedString || hasFallback) {
params.filename = hasFallback
? fallbackName
: name
}
return params
}
/**
* Format object to Content-Disposition header.
*
* @param {object} obj
* @param {string} obj.type
* @param {object} [obj.parameters]
* @return {string}
* @private
*/
function format (obj) {
var parameters = obj.parameters
var type = obj.type
if (!type || typeof type !== 'string' || !TOKEN_REGEXP.test(type)) {
throw new TypeError('invalid type')
}
// start with normalized type
var string = String(type).toLowerCase()
// append parameters
if (parameters && typeof parameters === 'object') {
var param
var params = Object.keys(parameters).sort()
for (var i = 0; i < params.length; i++) {
param = params[i]
var val = param.substr(-1) === '*'
? ustring(parameters[param])
: qstring(parameters[param])
string += '; ' + param + '=' + val
}
}
return string
}
/**
* Decode a RFC 5987 field value (gracefully).
*
* @param {string} str
* @return {string}
* @private
*/
function decodefield (str) {
var match = EXT_VALUE_REGEXP.exec(str)
if (!match) {
throw new TypeError('invalid extended field value')
}
var charset = match[1].toLowerCase()
var encoded = match[2]
var value
// to binary string
var binary = encoded.replace(HEX_ESCAPE_REPLACE_REGEXP, pdecode)
switch (charset) {
case 'iso-8859-1':
value = getlatin1(binary)
break
case 'utf-8':
value = Buffer.from(binary, 'binary').toString('utf8')
break
default:
throw new TypeError('unsupported charset in extended field')
}
return value
}
/**
* Get ISO-8859-1 version of string.
*
* @param {string} val
* @return {string}
* @private
*/
function getlatin1 (val) {
// simple Unicode -> ISO-8859-1 transformation
return String(val).replace(NON_LATIN1_REGEXP, '?')
}
/**
* Parse Content-Disposition header string.
*
* @param {string} string
* @return {object}
* @public
*/
function parse (string) {
if (!string || typeof string !== 'string') {
throw new TypeError('argument string is required')
}
var match = DISPOSITION_TYPE_REGEXP.exec(string)
if (!match) {
throw new TypeError('invalid type format')
}
// normalize type
var index = match[0].length
var type = match[1].toLowerCase()
var key
var names = []
var params = {}
var value
// calculate index to start at
index = PARAM_REGEXP.lastIndex = match[0].substr(-1) === ';'
? index - 1
: index
// match parameters
while ((match = PARAM_REGEXP.exec(string))) {
if (match.index !== index) {
throw new TypeError('invalid parameter format')
}
index += match[0].length
key = match[1].toLowerCase()
value = match[2]
if (names.indexOf(key) !== -1) {
throw new TypeError('invalid duplicate parameter')
}
names.push(key)
if (key.indexOf('*') + 1 === key.length) {
// decode extended value
key = key.slice(0, -1)
value = decodefield(value)
// overwrite existing value
params[key] = value
continue
}
if (typeof params[key] === 'string') {
continue
}
if (value[0] === '"') {
// remove quotes and escapes
value = value
.substr(1, value.length - 2)
.replace(QESC_REGEXP, '$1')
}
params[key] = value
}
if (index !== -1 && index !== string.length) {
throw new TypeError('invalid parameter format')
}
return new ContentDisposition(type, params)
}
/**
* Percent decode a single character.
*
* @param {string} str
* @param {string} hex
* @return {string}
* @private
*/
function pdecode (str, hex) {
return String.fromCharCode(parseInt(hex, 16))
}
/**
* Percent encode a single character.
*
* @param {string} char
* @return {string}
* @private
*/
function pencode (char) {
return '%' + String(char)
.charCodeAt(0)
.toString(16)
.toUpperCase()
}
/**
* Quote a string for HTTP.
*
* @param {string} val
* @return {string}
* @private
*/
function qstring (val) {
var str = String(val)
return '"' + str.replace(QUOTE_REGEXP, '\\$1') + '"'
}
/**
* Encode a Unicode string for HTTP (RFC 5987).
*
* @param {string} val
* @return {string}
* @private
*/
function ustring (val) {
var str = String(val)
// percent encode as UTF-8
var encoded = encodeURIComponent(str)
.replace(ENCODE_URL_ATTR_CHAR_REGEXP, pencode)
return 'UTF-8\'\'' + encoded
}
/**
* Class for parsed Content-Disposition header for v8 optimization
*
* @public
* @param {string} type
* @param {object} parameters
* @constructor
*/
function ContentDisposition (type, parameters) {
this.type = type
this.parameters = parameters
}
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{
"name": "content-disposition",
"description": "Create and parse Content-Disposition header",
"version": "0.5.4",
"author": "Douglas Christopher Wilson <doug@somethingdoug.com>",
"license": "MIT",
"keywords": [
"content-disposition",
"http",
"rfc6266",
"res"
],
"repository": "jshttp/content-disposition",
"dependencies": {
"safe-buffer": "5.2.1"
},
"devDependencies": {
"deep-equal": "1.0.1",
"eslint": "7.32.0",
"eslint-config-standard": "13.0.1",
"eslint-plugin-import": "2.25.3",
"eslint-plugin-markdown": "2.2.1",
"eslint-plugin-node": "11.1.0",
"eslint-plugin-promise": "5.2.0",
"eslint-plugin-standard": "4.1.0",
"istanbul": "0.4.5",
"mocha": "9.1.3"
},
"files": [
"LICENSE",
"HISTORY.md",
"README.md",
"index.js"
],
"engines": {
"node": ">= 0.6"
},
"scripts": {
"lint": "eslint .",
"test": "mocha --reporter spec --bail --check-leaks test/",
"test-ci": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter spec --check-leaks test/",
"test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot --check-leaks test/"
}
}
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1.0.5 / 2023-01-29
==================
* perf: skip value escaping when unnecessary
1.0.4 / 2017-09-11
==================
* perf: skip parameter parsing when no parameters
1.0.3 / 2017-09-10
==================
* perf: remove argument reassignment
1.0.2 / 2016-05-09
==================
* perf: enable strict mode
1.0.1 / 2015-02-13
==================
* Improve missing `Content-Type` header error message
1.0.0 / 2015-02-01
==================
* Initial implementation, derived from `media-typer@0.3.0`
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(The MIT License)
Copyright (c) 2015 Douglas Christopher Wilson
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# content-type
[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-url]
[![Node.js Version][node-image]][node-url]
[![Build Status][ci-image]][ci-url]
[![Coverage Status][coveralls-image]][coveralls-url]
Create and parse HTTP Content-Type header according to RFC 7231
## Installation
```sh
$ npm install content-type
```
## API
```js
var contentType = require('content-type')
```
### contentType.parse(string)
```js
var obj = contentType.parse('image/svg+xml; charset=utf-8')
```
Parse a `Content-Type` header. This will return an object with the following
properties (examples are shown for the string `'image/svg+xml; charset=utf-8'`):
- `type`: The media type (the type and subtype, always lower case).
Example: `'image/svg+xml'`
- `parameters`: An object of the parameters in the media type (name of parameter
always lower case). Example: `{charset: 'utf-8'}`
Throws a `TypeError` if the string is missing or invalid.
### contentType.parse(req)
```js
var obj = contentType.parse(req)
```
Parse the `Content-Type` header from the given `req`. Short-cut for
`contentType.parse(req.headers['content-type'])`.
Throws a `TypeError` if the `Content-Type` header is missing or invalid.
### contentType.parse(res)
```js
var obj = contentType.parse(res)
```
Parse the `Content-Type` header set on the given `res`. Short-cut for
`contentType.parse(res.getHeader('content-type'))`.
Throws a `TypeError` if the `Content-Type` header is missing or invalid.
### contentType.format(obj)
```js
var str = contentType.format({
type: 'image/svg+xml',
parameters: { charset: 'utf-8' }
})
```
Format an object into a `Content-Type` header. This will return a string of the
content type for the given object with the following properties (examples are
shown that produce the string `'image/svg+xml; charset=utf-8'`):
- `type`: The media type (will be lower-cased). Example: `'image/svg+xml'`
- `parameters`: An object of the parameters in the media type (name of the
parameter will be lower-cased). Example: `{charset: 'utf-8'}`
Throws a `TypeError` if the object contains an invalid type or parameter names.
## License
[MIT](LICENSE)
[ci-image]: https://badgen.net/github/checks/jshttp/content-type/master?label=ci
[ci-url]: https://github.com/jshttp/content-type/actions/workflows/ci.yml
[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/content-type/master
[coveralls-url]: https://coveralls.io/r/jshttp/content-type?branch=master
[node-image]: https://badgen.net/npm/node/content-type
[node-url]: https://nodejs.org/en/download
[npm-downloads-image]: https://badgen.net/npm/dm/content-type
[npm-url]: https://npmjs.org/package/content-type
[npm-version-image]: https://badgen.net/npm/v/content-type
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/*!
* content-type
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* RegExp to match *( ";" parameter ) in RFC 7231 sec 3.1.1.1
*
* parameter = token "=" ( token / quoted-string )
* token = 1*tchar
* tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*"
* / "+" / "-" / "." / "^" / "_" / "`" / "|" / "~"
* / DIGIT / ALPHA
* ; any VCHAR, except delimiters
* quoted-string = DQUOTE *( qdtext / quoted-pair ) DQUOTE
* qdtext = HTAB / SP / %x21 / %x23-5B / %x5D-7E / obs-text
* obs-text = %x80-FF
* quoted-pair = "\" ( HTAB / SP / VCHAR / obs-text )
*/
var PARAM_REGEXP = /; *([!#$%&'*+.^_`|~0-9A-Za-z-]+) *= *("(?:[\u000b\u0020\u0021\u0023-\u005b\u005d-\u007e\u0080-\u00ff]|\\[\u000b\u0020-\u00ff])*"|[!#$%&'*+.^_`|~0-9A-Za-z-]+) */g // eslint-disable-line no-control-regex
var TEXT_REGEXP = /^[\u000b\u0020-\u007e\u0080-\u00ff]+$/ // eslint-disable-line no-control-regex
var TOKEN_REGEXP = /^[!#$%&'*+.^_`|~0-9A-Za-z-]+$/
/**
* RegExp to match quoted-pair in RFC 7230 sec 3.2.6
*
* quoted-pair = "\" ( HTAB / SP / VCHAR / obs-text )
* obs-text = %x80-FF
*/
var QESC_REGEXP = /\\([\u000b\u0020-\u00ff])/g // eslint-disable-line no-control-regex
/**
* RegExp to match chars that must be quoted-pair in RFC 7230 sec 3.2.6
*/
var QUOTE_REGEXP = /([\\"])/g
/**
* RegExp to match type in RFC 7231 sec 3.1.1.1
*
* media-type = type "/" subtype
* type = token
* subtype = token
*/
var TYPE_REGEXP = /^[!#$%&'*+.^_`|~0-9A-Za-z-]+\/[!#$%&'*+.^_`|~0-9A-Za-z-]+$/
/**
* Module exports.
* @public
*/
exports.format = format
exports.parse = parse
/**
* Format object to media type.
*
* @param {object} obj
* @return {string}
* @public
*/
function format (obj) {
if (!obj || typeof obj !== 'object') {
throw new TypeError('argument obj is required')
}
var parameters = obj.parameters
var type = obj.type
if (!type || !TYPE_REGEXP.test(type)) {
throw new TypeError('invalid type')
}
var string = type
// append parameters
if (parameters && typeof parameters === 'object') {
var param
var params = Object.keys(parameters).sort()
for (var i = 0; i < params.length; i++) {
param = params[i]
if (!TOKEN_REGEXP.test(param)) {
throw new TypeError('invalid parameter name')
}
string += '; ' + param + '=' + qstring(parameters[param])
}
}
return string
}
/**
* Parse media type to object.
*
* @param {string|object} string
* @return {Object}
* @public
*/
function parse (string) {
if (!string) {
throw new TypeError('argument string is required')
}
// support req/res-like objects as argument
var header = typeof string === 'object'
? getcontenttype(string)
: string
if (typeof header !== 'string') {
throw new TypeError('argument string is required to be a string')
}
var index = header.indexOf(';')
var type = index !== -1
? header.slice(0, index).trim()
: header.trim()
if (!TYPE_REGEXP.test(type)) {
throw new TypeError('invalid media type')
}
var obj = new ContentType(type.toLowerCase())
// parse parameters
if (index !== -1) {
var key
var match
var value
PARAM_REGEXP.lastIndex = index
while ((match = PARAM_REGEXP.exec(header))) {
if (match.index !== index) {
throw new TypeError('invalid parameter format')
}
index += match[0].length
key = match[1].toLowerCase()
value = match[2]
if (value.charCodeAt(0) === 0x22 /* " */) {
// remove quotes
value = value.slice(1, -1)
// remove escapes
if (value.indexOf('\\') !== -1) {
value = value.replace(QESC_REGEXP, '$1')
}
}
obj.parameters[key] = value
}
if (index !== header.length) {
throw new TypeError('invalid parameter format')
}
}
return obj
}
/**
* Get content-type from req/res objects.
*
* @param {object}
* @return {Object}
* @private
*/
function getcontenttype (obj) {
var header
if (typeof obj.getHeader === 'function') {
// res-like
header = obj.getHeader('content-type')
} else if (typeof obj.headers === 'object') {
// req-like
header = obj.headers && obj.headers['content-type']
}
if (typeof header !== 'string') {
throw new TypeError('content-type header is missing from object')
}
return header
}
/**
* Quote a string if necessary.
*
* @param {string} val
* @return {string}
* @private
*/
function qstring (val) {
var str = String(val)
// no need to quote tokens
if (TOKEN_REGEXP.test(str)) {
return str
}
if (str.length > 0 && !TEXT_REGEXP.test(str)) {
throw new TypeError('invalid parameter value')
}
return '"' + str.replace(QUOTE_REGEXP, '\\$1') + '"'
}
/**
* Class to represent a content type.
* @private
*/
function ContentType (type) {
this.parameters = Object.create(null)
this.type = type
}
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{
"name": "content-type",
"description": "Create and parse HTTP Content-Type header",
"version": "1.0.5",
"author": "Douglas Christopher Wilson <doug@somethingdoug.com>",
"license": "MIT",
"keywords": [
"content-type",
"http",
"req",
"res",
"rfc7231"
],
"repository": "jshttp/content-type",
"devDependencies": {
"deep-equal": "1.0.1",
"eslint": "8.32.0",
"eslint-config-standard": "15.0.1",
"eslint-plugin-import": "2.27.5",
"eslint-plugin-node": "11.1.0",
"eslint-plugin-promise": "6.1.1",
"eslint-plugin-standard": "4.1.0",
"mocha": "10.2.0",
"nyc": "15.1.0"
},
"files": [
"LICENSE",
"HISTORY.md",
"README.md",
"index.js"
],
"engines": {
"node": ">= 0.6"
},
"scripts": {
"lint": "eslint .",
"test": "mocha --reporter spec --check-leaks --bail test/",
"test-ci": "nyc --reporter=lcovonly --reporter=text npm test",
"test-cov": "nyc --reporter=html --reporter=text npm test",
"version": "node scripts/version-history.js && git add HISTORY.md"
}
}
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1.0.7 / 2023-04-12
==================
* backport the buffer support from the 1.2.x release branch (thanks @FadhiliNjagi!)
1.0.6 / 2015-02-03
==================
* use `npm test` instead of `make test` to run tests
* clearer assertion messages when checking input
1.0.5 / 2014-09-05
==================
* add license to package.json
1.0.4 / 2014-06-25
==================
* corrected avoidance of timing attacks (thanks @tenbits!)
1.0.3 / 2014-01-28
==================
* [incorrect] fix for timing attacks
1.0.2 / 2014-01-28
==================
* fix missing repository warning
* fix typo in test
1.0.1 / 2013-04-15
==================
* Revert "Changed underlying HMAC algo. to sha512."
* Revert "Fix for timing attacks on MAC verification."
0.0.1 / 2010-01-03
==================
* Initial release
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# cookie-signature
Sign and unsign cookies.
## Example
```js
var cookie = require('cookie-signature');
var val = cookie.sign('hello', 'tobiiscool');
val.should.equal('hello.DGDUkGlIkCzPz+C0B064FNgHdEjox7ch8tOBGslZ5QI');
var val = cookie.sign('hello', 'tobiiscool');
cookie.unsign(val, 'tobiiscool').should.equal('hello');
cookie.unsign(val, 'luna').should.be.false;
```
## License
(The MIT License)
Copyright (c) 2012 LearnBoost &lt;tj@learnboost.com&gt;
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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/**
* Module dependencies.
*/
var crypto = require('crypto');
/**
* Sign the given `val` with `secret`.
*
* @param {String} val
* @param {String|NodeJS.ArrayBufferView|crypto.KeyObject} secret
* @return {String}
* @api private
*/
exports.sign = function(val, secret){
if ('string' !== typeof val) throw new TypeError("Cookie value must be provided as a string.");
if (null == secret) throw new TypeError("Secret key must be provided.");
return val + '.' + crypto
.createHmac('sha256', secret)
.update(val)
.digest('base64')
.replace(/\=+$/, '');
};
/**
* Unsign and decode the given `val` with `secret`,
* returning `false` if the signature is invalid.
*
* @param {String} val
* @param {String|NodeJS.ArrayBufferView|crypto.KeyObject} secret
* @return {String|Boolean}
* @api private
*/
exports.unsign = function(val, secret){
if ('string' !== typeof val) throw new TypeError("Signed cookie string must be provided.");
if (null == secret) throw new TypeError("Secret key must be provided.");
var str = val.slice(0, val.lastIndexOf('.'))
, mac = exports.sign(str, secret);
return sha1(mac) == sha1(val) ? str : false;
};
/**
* Private
*/
function sha1(str){
return crypto.createHash('sha1').update(str).digest('hex');
}
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{
"name": "cookie-signature",
"version": "1.0.7",
"description": "Sign and unsign cookies",
"keywords": ["cookie", "sign", "unsign"],
"author": "TJ Holowaychuk <tj@learnboost.com>",
"license": "MIT",
"repository": { "type": "git", "url": "https://github.com/visionmedia/node-cookie-signature.git"},
"dependencies": {},
"devDependencies": {
"mocha": "*",
"should": "*"
},
"scripts": {
"test": "mocha --require should --reporter spec"
},
"main": "index"
}
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(The MIT License)
Copyright (c) 2012-2014 Roman Shtylman <shtylman@gmail.com>
Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+317
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# cookie
[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-url]
[![Node.js Version][node-image]][node-url]
[![Build Status][ci-image]][ci-url]
[![Coverage Status][coveralls-image]][coveralls-url]
Basic HTTP cookie parser and serializer for HTTP servers.
## Installation
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
```sh
$ npm install cookie
```
## API
```js
var cookie = require('cookie');
```
### cookie.parse(str, options)
Parse an HTTP `Cookie` header string and returning an object of all cookie name-value pairs.
The `str` argument is the string representing a `Cookie` header value and `options` is an
optional object containing additional parsing options.
```js
var cookies = cookie.parse('foo=bar; equation=E%3Dmc%5E2');
// { foo: 'bar', equation: 'E=mc^2' }
```
#### Options
`cookie.parse` accepts these properties in the options object.
##### decode
Specifies a function that will be used to decode a cookie's value. Since the value of a cookie
has a limited character set (and must be a simple string), this function can be used to decode
a previously-encoded cookie value into a JavaScript string or other object.
The default function is the global `decodeURIComponent`, which will decode any URL-encoded
sequences into their byte representations.
**note** if an error is thrown from this function, the original, non-decoded cookie value will
be returned as the cookie's value.
### cookie.serialize(name, value, options)
Serialize a cookie name-value pair into a `Set-Cookie` header string. The `name` argument is the
name for the cookie, the `value` argument is the value to set the cookie to, and the `options`
argument is an optional object containing additional serialization options.
```js
var setCookie = cookie.serialize('foo', 'bar');
// foo=bar
```
#### Options
`cookie.serialize` accepts these properties in the options object.
##### domain
Specifies the value for the [`Domain` `Set-Cookie` attribute][rfc-6265-5.2.3]. By default, no
domain is set, and most clients will consider the cookie to apply to only the current domain.
##### encode
Specifies a function that will be used to encode a cookie's value. Since value of a cookie
has a limited character set (and must be a simple string), this function can be used to encode
a value into a string suited for a cookie's value.
The default function is the global `encodeURIComponent`, which will encode a JavaScript string
into UTF-8 byte sequences and then URL-encode any that fall outside of the cookie range.
##### expires
Specifies the `Date` object to be the value for the [`Expires` `Set-Cookie` attribute][rfc-6265-5.2.1].
By default, no expiration is set, and most clients will consider this a "non-persistent cookie" and
will delete it on a condition like exiting a web browser application.
**note** the [cookie storage model specification][rfc-6265-5.3] states that if both `expires` and
`maxAge` are set, then `maxAge` takes precedence, but it is possible not all clients by obey this,
so if both are set, they should point to the same date and time.
##### httpOnly
Specifies the `boolean` value for the [`HttpOnly` `Set-Cookie` attribute][rfc-6265-5.2.6]. When truthy,
the `HttpOnly` attribute is set, otherwise it is not. By default, the `HttpOnly` attribute is not set.
**note** be careful when setting this to `true`, as compliant clients will not allow client-side
JavaScript to see the cookie in `document.cookie`.
##### maxAge
Specifies the `number` (in seconds) to be the value for the [`Max-Age` `Set-Cookie` attribute][rfc-6265-5.2.2].
The given number will be converted to an integer by rounding down. By default, no maximum age is set.
**note** the [cookie storage model specification][rfc-6265-5.3] states that if both `expires` and
`maxAge` are set, then `maxAge` takes precedence, but it is possible not all clients by obey this,
so if both are set, they should point to the same date and time.
##### partitioned
Specifies the `boolean` value for the [`Partitioned` `Set-Cookie`](rfc-cutler-httpbis-partitioned-cookies)
attribute. When truthy, the `Partitioned` attribute is set, otherwise it is not. By default, the
`Partitioned` attribute is not set.
**note** This is an attribute that has not yet been fully standardized, and may change in the future.
This also means many clients may ignore this attribute until they understand it.
More information about can be found in [the proposal](https://github.com/privacycg/CHIPS).
##### path
Specifies the value for the [`Path` `Set-Cookie` attribute][rfc-6265-5.2.4]. By default, the path
is considered the ["default path"][rfc-6265-5.1.4].
##### priority
Specifies the `string` to be the value for the [`Priority` `Set-Cookie` attribute][rfc-west-cookie-priority-00-4.1].
- `'low'` will set the `Priority` attribute to `Low`.
- `'medium'` will set the `Priority` attribute to `Medium`, the default priority when not set.
- `'high'` will set the `Priority` attribute to `High`.
More information about the different priority levels can be found in
[the specification][rfc-west-cookie-priority-00-4.1].
**note** This is an attribute that has not yet been fully standardized, and may change in the future.
This also means many clients may ignore this attribute until they understand it.
##### sameSite
Specifies the `boolean` or `string` to be the value for the [`SameSite` `Set-Cookie` attribute][rfc-6265bis-09-5.4.7].
- `true` will set the `SameSite` attribute to `Strict` for strict same site enforcement.
- `false` will not set the `SameSite` attribute.
- `'lax'` will set the `SameSite` attribute to `Lax` for lax same site enforcement.
- `'none'` will set the `SameSite` attribute to `None` for an explicit cross-site cookie.
- `'strict'` will set the `SameSite` attribute to `Strict` for strict same site enforcement.
More information about the different enforcement levels can be found in
[the specification][rfc-6265bis-09-5.4.7].
**note** This is an attribute that has not yet been fully standardized, and may change in the future.
This also means many clients may ignore this attribute until they understand it.
##### secure
Specifies the `boolean` value for the [`Secure` `Set-Cookie` attribute][rfc-6265-5.2.5]. When truthy,
the `Secure` attribute is set, otherwise it is not. By default, the `Secure` attribute is not set.
**note** be careful when setting this to `true`, as compliant clients will not send the cookie back to
the server in the future if the browser does not have an HTTPS connection.
## Example
The following example uses this module in conjunction with the Node.js core HTTP server
to prompt a user for their name and display it back on future visits.
```js
var cookie = require('cookie');
var escapeHtml = require('escape-html');
var http = require('http');
var url = require('url');
function onRequest(req, res) {
// Parse the query string
var query = url.parse(req.url, true, true).query;
if (query && query.name) {
// Set a new cookie with the name
res.setHeader('Set-Cookie', cookie.serialize('name', String(query.name), {
httpOnly: true,
maxAge: 60 * 60 * 24 * 7 // 1 week
}));
// Redirect back after setting cookie
res.statusCode = 302;
res.setHeader('Location', req.headers.referer || '/');
res.end();
return;
}
// Parse the cookies on the request
var cookies = cookie.parse(req.headers.cookie || '');
// Get the visitor name set in the cookie
var name = cookies.name;
res.setHeader('Content-Type', 'text/html; charset=UTF-8');
if (name) {
res.write('<p>Welcome back, <b>' + escapeHtml(name) + '</b>!</p>');
} else {
res.write('<p>Hello, new visitor!</p>');
}
res.write('<form method="GET">');
res.write('<input placeholder="enter your name" name="name"> <input type="submit" value="Set Name">');
res.end('</form>');
}
http.createServer(onRequest).listen(3000);
```
## Testing
```sh
$ npm test
```
## Benchmark
```
$ npm run bench
> cookie@0.5.0 bench
> node benchmark/index.js
node@18.18.2
acorn@8.10.0
ada@2.6.0
ares@1.19.1
brotli@1.0.9
cldr@43.1
icu@73.2
llhttp@6.0.11
modules@108
napi@9
nghttp2@1.57.0
nghttp3@0.7.0
ngtcp2@0.8.1
openssl@3.0.10+quic
simdutf@3.2.14
tz@2023c
undici@5.26.3
unicode@15.0
uv@1.44.2
uvwasi@0.0.18
v8@10.2.154.26-node.26
zlib@1.2.13.1-motley
> node benchmark/parse-top.js
cookie.parse - top sites
14 tests completed.
parse accounts.google.com x 2,588,913 ops/sec ±0.74% (186 runs sampled)
parse apple.com x 2,370,002 ops/sec ±0.69% (186 runs sampled)
parse cloudflare.com x 2,213,102 ops/sec ±0.88% (188 runs sampled)
parse docs.google.com x 2,194,157 ops/sec ±1.03% (184 runs sampled)
parse drive.google.com x 2,265,084 ops/sec ±0.79% (187 runs sampled)
parse en.wikipedia.org x 457,099 ops/sec ±0.81% (186 runs sampled)
parse linkedin.com x 504,407 ops/sec ±0.89% (186 runs sampled)
parse maps.google.com x 1,230,959 ops/sec ±0.98% (186 runs sampled)
parse microsoft.com x 926,294 ops/sec ±0.88% (184 runs sampled)
parse play.google.com x 2,311,338 ops/sec ±0.83% (185 runs sampled)
parse support.google.com x 1,508,850 ops/sec ±0.86% (186 runs sampled)
parse www.google.com x 1,022,582 ops/sec ±1.32% (182 runs sampled)
parse youtu.be x 332,136 ops/sec ±1.02% (185 runs sampled)
parse youtube.com x 323,833 ops/sec ±0.77% (183 runs sampled)
> node benchmark/parse.js
cookie.parse - generic
6 tests completed.
simple x 3,214,032 ops/sec ±1.61% (183 runs sampled)
decode x 587,237 ops/sec ±1.16% (187 runs sampled)
unquote x 2,954,618 ops/sec ±1.35% (183 runs sampled)
duplicates x 857,008 ops/sec ±0.89% (187 runs sampled)
10 cookies x 292,133 ops/sec ±0.89% (187 runs sampled)
100 cookies x 22,610 ops/sec ±0.68% (187 runs sampled)
```
## References
- [RFC 6265: HTTP State Management Mechanism][rfc-6265]
- [Same-site Cookies][rfc-6265bis-09-5.4.7]
[rfc-cutler-httpbis-partitioned-cookies]: https://tools.ietf.org/html/draft-cutler-httpbis-partitioned-cookies/
[rfc-west-cookie-priority-00-4.1]: https://tools.ietf.org/html/draft-west-cookie-priority-00#section-4.1
[rfc-6265bis-09-5.4.7]: https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-09#section-5.4.7
[rfc-6265]: https://tools.ietf.org/html/rfc6265
[rfc-6265-5.1.4]: https://tools.ietf.org/html/rfc6265#section-5.1.4
[rfc-6265-5.2.1]: https://tools.ietf.org/html/rfc6265#section-5.2.1
[rfc-6265-5.2.2]: https://tools.ietf.org/html/rfc6265#section-5.2.2
[rfc-6265-5.2.3]: https://tools.ietf.org/html/rfc6265#section-5.2.3
[rfc-6265-5.2.4]: https://tools.ietf.org/html/rfc6265#section-5.2.4
[rfc-6265-5.2.5]: https://tools.ietf.org/html/rfc6265#section-5.2.5
[rfc-6265-5.2.6]: https://tools.ietf.org/html/rfc6265#section-5.2.6
[rfc-6265-5.3]: https://tools.ietf.org/html/rfc6265#section-5.3
## License
[MIT](LICENSE)
[ci-image]: https://badgen.net/github/checks/jshttp/cookie/master?label=ci
[ci-url]: https://github.com/jshttp/cookie/actions/workflows/ci.yml
[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/cookie/master
[coveralls-url]: https://coveralls.io/r/jshttp/cookie?branch=master
[node-image]: https://badgen.net/npm/node/cookie
[node-url]: https://nodejs.org/en/download
[npm-downloads-image]: https://badgen.net/npm/dm/cookie
[npm-url]: https://npmjs.org/package/cookie
[npm-version-image]: https://badgen.net/npm/v/cookie
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# Security Policies and Procedures
## Reporting a Bug
The `cookie` team and community take all security bugs seriously. Thank
you for improving the security of the project. We appreciate your efforts and
responsible disclosure and will make every effort to acknowledge your
contributions.
Report security bugs by emailing the current owner(s) of `cookie`. This
information can be found in the npm registry using the command
`npm owner ls cookie`.
If unsure or unable to get the information from the above, open an issue
in the [project issue tracker](https://github.com/jshttp/cookie/issues)
asking for the current contact information.
To ensure the timely response to your report, please ensure that the entirety
of the report is contained within the email body and not solely behind a web
link or an attachment.
At least one owner will acknowledge your email within 48 hours, and will send a
more detailed response within 48 hours indicating the next steps in handling
your report. After the initial reply to your report, the owners will
endeavor to keep you informed of the progress towards a fix and full
announcement, and may ask for additional information or guidance.
+335
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/*!
* cookie
* Copyright(c) 2012-2014 Roman Shtylman
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict';
/**
* Module exports.
* @public
*/
exports.parse = parse;
exports.serialize = serialize;
/**
* Module variables.
* @private
*/
var __toString = Object.prototype.toString
var __hasOwnProperty = Object.prototype.hasOwnProperty
/**
* RegExp to match cookie-name in RFC 6265 sec 4.1.1
* This refers out to the obsoleted definition of token in RFC 2616 sec 2.2
* which has been replaced by the token definition in RFC 7230 appendix B.
*
* cookie-name = token
* token = 1*tchar
* tchar = "!" / "#" / "$" / "%" / "&" / "'" /
* "*" / "+" / "-" / "." / "^" / "_" /
* "`" / "|" / "~" / DIGIT / ALPHA
*/
var cookieNameRegExp = /^[!#$%&'*+\-.^_`|~0-9A-Za-z]+$/;
/**
* RegExp to match cookie-value in RFC 6265 sec 4.1.1
*
* cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE )
* cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
* ; US-ASCII characters excluding CTLs,
* ; whitespace DQUOTE, comma, semicolon,
* ; and backslash
*/
var cookieValueRegExp = /^("?)[\u0021\u0023-\u002B\u002D-\u003A\u003C-\u005B\u005D-\u007E]*\1$/;
/**
* RegExp to match domain-value in RFC 6265 sec 4.1.1
*
* domain-value = <subdomain>
* ; defined in [RFC1034], Section 3.5, as
* ; enhanced by [RFC1123], Section 2.1
* <subdomain> = <label> | <subdomain> "." <label>
* <label> = <let-dig> [ [ <ldh-str> ] <let-dig> ]
* Labels must be 63 characters or less.
* 'let-dig' not 'letter' in the first char, per RFC1123
* <ldh-str> = <let-dig-hyp> | <let-dig-hyp> <ldh-str>
* <let-dig-hyp> = <let-dig> | "-"
* <let-dig> = <letter> | <digit>
* <letter> = any one of the 52 alphabetic characters A through Z in
* upper case and a through z in lower case
* <digit> = any one of the ten digits 0 through 9
*
* Keep support for leading dot: https://github.com/jshttp/cookie/issues/173
*
* > (Note that a leading %x2E ("."), if present, is ignored even though that
* character is not permitted, but a trailing %x2E ("."), if present, will
* cause the user agent to ignore the attribute.)
*/
var domainValueRegExp = /^([.]?[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?)([.][a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?)*$/i;
/**
* RegExp to match path-value in RFC 6265 sec 4.1.1
*
* path-value = <any CHAR except CTLs or ";">
* CHAR = %x01-7F
* ; defined in RFC 5234 appendix B.1
*/
var pathValueRegExp = /^[\u0020-\u003A\u003D-\u007E]*$/;
/**
* Parse a cookie header.
*
* Parse the given cookie header string into an object
* The object has the various cookies as keys(names) => values
*
* @param {string} str
* @param {object} [opt]
* @return {object}
* @public
*/
function parse(str, opt) {
if (typeof str !== 'string') {
throw new TypeError('argument str must be a string');
}
var obj = {};
var len = str.length;
// RFC 6265 sec 4.1.1, RFC 2616 2.2 defines a cookie name consists of one char minimum, plus '='.
if (len < 2) return obj;
var dec = (opt && opt.decode) || decode;
var index = 0;
var eqIdx = 0;
var endIdx = 0;
do {
eqIdx = str.indexOf('=', index);
if (eqIdx === -1) break; // No more cookie pairs.
endIdx = str.indexOf(';', index);
if (endIdx === -1) {
endIdx = len;
} else if (eqIdx > endIdx) {
// backtrack on prior semicolon
index = str.lastIndexOf(';', eqIdx - 1) + 1;
continue;
}
var keyStartIdx = startIndex(str, index, eqIdx);
var keyEndIdx = endIndex(str, eqIdx, keyStartIdx);
var key = str.slice(keyStartIdx, keyEndIdx);
// only assign once
if (!__hasOwnProperty.call(obj, key)) {
var valStartIdx = startIndex(str, eqIdx + 1, endIdx);
var valEndIdx = endIndex(str, endIdx, valStartIdx);
if (str.charCodeAt(valStartIdx) === 0x22 /* " */ && str.charCodeAt(valEndIdx - 1) === 0x22 /* " */) {
valStartIdx++;
valEndIdx--;
}
var val = str.slice(valStartIdx, valEndIdx);
obj[key] = tryDecode(val, dec);
}
index = endIdx + 1
} while (index < len);
return obj;
}
function startIndex(str, index, max) {
do {
var code = str.charCodeAt(index);
if (code !== 0x20 /* */ && code !== 0x09 /* \t */) return index;
} while (++index < max);
return max;
}
function endIndex(str, index, min) {
while (index > min) {
var code = str.charCodeAt(--index);
if (code !== 0x20 /* */ && code !== 0x09 /* \t */) return index + 1;
}
return min;
}
/**
* Serialize data into a cookie header.
*
* Serialize a name value pair into a cookie string suitable for
* http headers. An optional options object specifies cookie parameters.
*
* serialize('foo', 'bar', { httpOnly: true })
* => "foo=bar; httpOnly"
*
* @param {string} name
* @param {string} val
* @param {object} [opt]
* @return {string}
* @public
*/
function serialize(name, val, opt) {
var enc = (opt && opt.encode) || encodeURIComponent;
if (typeof enc !== 'function') {
throw new TypeError('option encode is invalid');
}
if (!cookieNameRegExp.test(name)) {
throw new TypeError('argument name is invalid');
}
var value = enc(val);
if (!cookieValueRegExp.test(value)) {
throw new TypeError('argument val is invalid');
}
var str = name + '=' + value;
if (!opt) return str;
if (null != opt.maxAge) {
var maxAge = Math.floor(opt.maxAge);
if (!isFinite(maxAge)) {
throw new TypeError('option maxAge is invalid')
}
str += '; Max-Age=' + maxAge;
}
if (opt.domain) {
if (!domainValueRegExp.test(opt.domain)) {
throw new TypeError('option domain is invalid');
}
str += '; Domain=' + opt.domain;
}
if (opt.path) {
if (!pathValueRegExp.test(opt.path)) {
throw new TypeError('option path is invalid');
}
str += '; Path=' + opt.path;
}
if (opt.expires) {
var expires = opt.expires
if (!isDate(expires) || isNaN(expires.valueOf())) {
throw new TypeError('option expires is invalid');
}
str += '; Expires=' + expires.toUTCString()
}
if (opt.httpOnly) {
str += '; HttpOnly';
}
if (opt.secure) {
str += '; Secure';
}
if (opt.partitioned) {
str += '; Partitioned'
}
if (opt.priority) {
var priority = typeof opt.priority === 'string'
? opt.priority.toLowerCase() : opt.priority;
switch (priority) {
case 'low':
str += '; Priority=Low'
break
case 'medium':
str += '; Priority=Medium'
break
case 'high':
str += '; Priority=High'
break
default:
throw new TypeError('option priority is invalid')
}
}
if (opt.sameSite) {
var sameSite = typeof opt.sameSite === 'string'
? opt.sameSite.toLowerCase() : opt.sameSite;
switch (sameSite) {
case true:
str += '; SameSite=Strict';
break;
case 'lax':
str += '; SameSite=Lax';
break;
case 'strict':
str += '; SameSite=Strict';
break;
case 'none':
str += '; SameSite=None';
break;
default:
throw new TypeError('option sameSite is invalid');
}
}
return str;
}
/**
* URL-decode string value. Optimized to skip native call when no %.
*
* @param {string} str
* @returns {string}
*/
function decode (str) {
return str.indexOf('%') !== -1
? decodeURIComponent(str)
: str
}
/**
* Determine if value is a Date.
*
* @param {*} val
* @private
*/
function isDate (val) {
return __toString.call(val) === '[object Date]';
}
/**
* Try decoding a string using a decoding function.
*
* @param {string} str
* @param {function} decode
* @private
*/
function tryDecode(str, decode) {
try {
return decode(str);
} catch (e) {
return str;
}
}
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{
"name": "cookie",
"description": "HTTP server cookie parsing and serialization",
"version": "0.7.2",
"author": "Roman Shtylman <shtylman@gmail.com>",
"contributors": [
"Douglas Christopher Wilson <doug@somethingdoug.com>"
],
"license": "MIT",
"keywords": [
"cookie",
"cookies"
],
"repository": "jshttp/cookie",
"devDependencies": {
"beautify-benchmark": "0.2.4",
"benchmark": "2.1.4",
"eslint": "8.53.0",
"eslint-plugin-markdown": "3.0.1",
"mocha": "10.2.0",
"nyc": "15.1.0",
"safe-buffer": "5.2.1",
"top-sites": "1.1.194"
},
"files": [
"HISTORY.md",
"LICENSE",
"README.md",
"SECURITY.md",
"index.js"
],
"main": "index.js",
"engines": {
"node": ">= 0.6"
},
"scripts": {
"bench": "node benchmark/index.js",
"lint": "eslint .",
"test": "mocha --reporter spec --bail --check-leaks test/",
"test-ci": "nyc --reporter=lcov --reporter=text npm test",
"test-cov": "nyc --reporter=html --reporter=text npm test",
"update-bench": "node scripts/update-benchmark.js"
}
}
+22
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(The MIT License)
Copyright (c) 2013 Troy Goode <troygoode@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+277
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# cors
[![NPM Version][npm-image]][npm-url]
[![NPM Downloads][downloads-image]][downloads-url]
[![Build Status][github-actions-ci-image]][github-actions-ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
CORS is a [Node.js](https://nodejs.org/en/) middleware for [Express](https://expressjs.com/)/[Connect](https://github.com/senchalabs/connect) that sets [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS) response headers. These headers tell browsers which origins can read responses from your server.
> [!IMPORTANT]
> **How CORS Works:** This package sets response headers—it doesn't block requests. CORS is enforced by browsers: they check the headers and decide if JavaScript can read the response. Non-browser clients (curl, Postman, other servers) ignore CORS entirely. See the [MDN CORS guide](https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS) for details.
* [Installation](#installation)
* [Usage](#usage)
* [Simple Usage](#simple-usage-enable-all-cors-requests)
* [Enable CORS for a Single Route](#enable-cors-for-a-single-route)
* [Configuring CORS](#configuring-cors)
* [Configuring CORS w/ Dynamic Origin](#configuring-cors-w-dynamic-origin)
* [Enabling CORS Pre-Flight](#enabling-cors-pre-flight)
* [Customizing CORS Settings Dynamically per Request](#customizing-cors-settings-dynamically-per-request)
* [Configuration Options](#configuration-options)
* [Common Misconceptions](#common-misconceptions)
* [License](#license)
* [Original Author](#original-author)
## Installation
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/downloading-and-installing-packages-locally):
```sh
$ npm install cors
```
## Usage
### Simple Usage (Enable *All* CORS Requests)
```javascript
var express = require('express')
var cors = require('cors')
var app = express()
// Adds headers: Access-Control-Allow-Origin: *
app.use(cors())
app.get('/products/:id', function (req, res, next) {
res.json({msg: 'Hello'})
})
app.listen(80, function () {
console.log('web server listening on port 80')
})
```
### Enable CORS for a Single Route
```javascript
var express = require('express')
var cors = require('cors')
var app = express()
// Adds headers: Access-Control-Allow-Origin: *
app.get('/products/:id', cors(), function (req, res, next) {
res.json({msg: 'Hello'})
})
app.listen(80, function () {
console.log('web server listening on port 80')
})
```
### Configuring CORS
See the [configuration options](#configuration-options) for details.
```javascript
var express = require('express')
var cors = require('cors')
var app = express()
var corsOptions = {
origin: 'http://example.com',
optionsSuccessStatus: 200 // some legacy browsers (IE11, various SmartTVs) choke on 204
}
// Adds headers: Access-Control-Allow-Origin: http://example.com, Vary: Origin
app.get('/products/:id', cors(corsOptions), function (req, res, next) {
res.json({msg: 'Hello'})
})
app.listen(80, function () {
console.log('web server listening on port 80')
})
```
### Configuring CORS w/ Dynamic Origin
This module supports validating the origin dynamically using a function provided
to the `origin` option. This function will be passed a string that is the origin
(or `undefined` if the request has no origin), and a `callback` with the signature
`callback(error, origin)`.
The `origin` argument to the callback can be any value allowed for the `origin`
option of the middleware, except a function. See the
[configuration options](#configuration-options) section for more information on all
the possible value types.
This function is designed to allow the dynamic loading of allowed origin(s) from
a backing datasource, like a database.
```javascript
var express = require('express')
var cors = require('cors')
var app = express()
var corsOptions = {
origin: function (origin, callback) {
// db.loadOrigins is an example call to load
// a list of origins from a backing database
db.loadOrigins(function (error, origins) {
callback(error, origins)
})
}
}
// Adds headers: Access-Control-Allow-Origin: <matched origin>, Vary: Origin
app.get('/products/:id', cors(corsOptions), function (req, res, next) {
res.json({msg: 'Hello'})
})
app.listen(80, function () {
console.log('web server listening on port 80')
})
```
### Enabling CORS Pre-Flight
Certain CORS requests are considered 'complex' and require an initial
`OPTIONS` request (called the "pre-flight request"). An example of a
'complex' CORS request is one that uses an HTTP verb other than
GET/HEAD/POST (such as DELETE) or that uses custom headers. To enable
pre-flighting, you must add a new OPTIONS handler for the route you want
to support:
```javascript
var express = require('express')
var cors = require('cors')
var app = express()
app.options('/products/:id', cors()) // preflight for DELETE
app.del('/products/:id', cors(), function (req, res, next) {
res.json({msg: 'Hello'})
})
app.listen(80, function () {
console.log('web server listening on port 80')
})
```
You can also enable pre-flight across-the-board like so:
```javascript
app.options('*', cors()) // include before other routes
```
NOTE: When using this middleware as an application level middleware (for
example, `app.use(cors())`), pre-flight requests are already handled for all
routes.
### Customizing CORS Settings Dynamically per Request
For APIs that require different CORS configurations for specific routes or requests, you can dynamically generate CORS options based on the incoming request. The `cors` middleware allows you to achieve this by passing a function instead of static options. This function is called for each incoming request and must use the callback pattern to return the appropriate CORS options.
The function accepts:
1. **`req`**:
- The incoming request object.
2. **`callback(error, corsOptions)`**:
- A function used to return the computed CORS options.
- **Arguments**:
- **`error`**: Pass `null` if theres no error, or an error object to indicate a failure.
- **`corsOptions`**: An object specifying the CORS policy for the current request.
Heres an example that handles both public routes and restricted, credential-sensitive routes:
```javascript
var dynamicCorsOptions = function(req, callback) {
var corsOptions;
if (req.path.startsWith('/auth/connect/')) {
// Access-Control-Allow-Origin: http://mydomain.com, Access-Control-Allow-Credentials: true, Vary: Origin
corsOptions = {
origin: 'http://mydomain.com',
credentials: true
};
} else {
// Access-Control-Allow-Origin: *
corsOptions = { origin: '*' };
}
callback(null, corsOptions);
};
app.use(cors(dynamicCorsOptions));
app.get('/auth/connect/twitter', function (req, res) {
res.send('Hello');
});
app.get('/public', function (req, res) {
res.send('Hello');
});
app.listen(80, function () {
console.log('web server listening on port 80')
})
```
## Configuration Options
* `origin`: Configures the **Access-Control-Allow-Origin** CORS header. Possible values:
- `Boolean` - set `origin` to `true` to reflect the [request origin](https://datatracker.ietf.org/doc/html/draft-abarth-origin-09), as defined by `req.header('Origin')`, or set it to `false` to disable CORS.
- `String` - set `origin` to a specific origin. For example, if you set it to
- `"http://example.com"` only requests from "http://example.com" will be allowed.
- `"*"` for all domains to be allowed.
- `RegExp` - set `origin` to a regular expression pattern which will be used to test the request origin. If it's a match, the request origin will be reflected. For example the pattern `/example\.com$/` will reflect any request that is coming from an origin ending with "example.com".
- `Array` - set `origin` to an array of valid origins. Each origin can be a `String` or a `RegExp`. For example `["http://example1.com", /\.example2\.com$/]` will accept any request from "http://example1.com" or from a subdomain of "example2.com".
- `Function` - set `origin` to a function implementing some custom logic. The function takes the request origin as the first parameter and a callback (called as `callback(err, origin)`, where `origin` is a non-function value of the `origin` option) as the second.
* `methods`: Configures the **Access-Control-Allow-Methods** CORS header. Expects a comma-delimited string (ex: 'GET,PUT,POST') or an array (ex: `['GET', 'PUT', 'POST']`).
* `allowedHeaders`: Configures the **Access-Control-Allow-Headers** CORS header. Expects a comma-delimited string (ex: 'Content-Type,Authorization') or an array (ex: `['Content-Type', 'Authorization']`). If not specified, defaults to reflecting the headers specified in the request's **Access-Control-Request-Headers** header.
* `exposedHeaders`: Configures the **Access-Control-Expose-Headers** CORS header. Expects a comma-delimited string (ex: 'Content-Range,X-Content-Range') or an array (ex: `['Content-Range', 'X-Content-Range']`). If not specified, no custom headers are exposed.
* `credentials`: Configures the **Access-Control-Allow-Credentials** CORS header. Set to `true` to pass the header, otherwise it is omitted.
* `maxAge`: Configures the **Access-Control-Max-Age** CORS header. Set to an integer to pass the header, otherwise it is omitted.
* `preflightContinue`: Pass the CORS preflight response to the next handler.
* `optionsSuccessStatus`: Provides a status code to use for successful `OPTIONS` requests, since some legacy browsers (IE11, various SmartTVs) choke on `204`.
The default configuration is the equivalent of:
```json
{
"origin": "*",
"methods": "GET,HEAD,PUT,PATCH,POST,DELETE",
"preflightContinue": false,
"optionsSuccessStatus": 204
}
```
## Common Misconceptions
### "CORS blocks requests from disallowed origins"
**No.** Your server receives and processes every request. CORS headers tell the browser whether JavaScript can read the response—not whether the request is allowed.
### "CORS protects my API from unauthorized access"
**No.** CORS is not access control. Any HTTP client (curl, Postman, another server) can call your API regardless of CORS settings. Use authentication and authorization to protect your API.
### "Setting `origin: 'http://example.com'` means only that domain can access my server"
**No.** It means browsers will only let JavaScript from that origin read responses. The server still responds to all requests.
## License
[MIT License](http://www.opensource.org/licenses/mit-license.php)
## Original Author
[Troy Goode](https://github.com/TroyGoode) ([troygoode@gmail.com](mailto:troygoode@gmail.com))
[coveralls-image]: https://img.shields.io/coveralls/expressjs/cors/master.svg
[coveralls-url]: https://coveralls.io/r/expressjs/cors?branch=master
[downloads-image]: https://img.shields.io/npm/dm/cors.svg
[downloads-url]: https://npmjs.com/package/cors
[github-actions-ci-image]: https://img.shields.io/github/actions/workflow/status/expressjs/cors/ci.yml?branch=master&label=ci
[github-actions-ci-url]: https://github.com/expressjs/cors?query=workflow%3Aci
[npm-image]: https://img.shields.io/npm/v/cors.svg
[npm-url]: https://npmjs.com/package/cors
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(function () {
'use strict';
var assign = require('object-assign');
var vary = require('vary');
var defaults = {
origin: '*',
methods: 'GET,HEAD,PUT,PATCH,POST,DELETE',
preflightContinue: false,
optionsSuccessStatus: 204
};
function isString(s) {
return typeof s === 'string' || s instanceof String;
}
function isOriginAllowed(origin, allowedOrigin) {
if (Array.isArray(allowedOrigin)) {
for (var i = 0; i < allowedOrigin.length; ++i) {
if (isOriginAllowed(origin, allowedOrigin[i])) {
return true;
}
}
return false;
} else if (isString(allowedOrigin)) {
return origin === allowedOrigin;
} else if (allowedOrigin instanceof RegExp) {
return allowedOrigin.test(origin);
} else {
return !!allowedOrigin;
}
}
function configureOrigin(options, req) {
var requestOrigin = req.headers.origin,
headers = [],
isAllowed;
if (!options.origin || options.origin === '*') {
// allow any origin
headers.push([{
key: 'Access-Control-Allow-Origin',
value: '*'
}]);
} else if (isString(options.origin)) {
// fixed origin
headers.push([{
key: 'Access-Control-Allow-Origin',
value: options.origin
}]);
headers.push([{
key: 'Vary',
value: 'Origin'
}]);
} else {
isAllowed = isOriginAllowed(requestOrigin, options.origin);
// reflect origin
headers.push([{
key: 'Access-Control-Allow-Origin',
value: isAllowed ? requestOrigin : false
}]);
headers.push([{
key: 'Vary',
value: 'Origin'
}]);
}
return headers;
}
function configureMethods(options) {
var methods = options.methods;
if (methods.join) {
methods = options.methods.join(','); // .methods is an array, so turn it into a string
}
return {
key: 'Access-Control-Allow-Methods',
value: methods
};
}
function configureCredentials(options) {
if (options.credentials === true) {
return {
key: 'Access-Control-Allow-Credentials',
value: 'true'
};
}
return null;
}
function configureAllowedHeaders(options, req) {
var allowedHeaders = options.allowedHeaders || options.headers;
var headers = [];
if (!allowedHeaders) {
allowedHeaders = req.headers['access-control-request-headers']; // .headers wasn't specified, so reflect the request headers
headers.push([{
key: 'Vary',
value: 'Access-Control-Request-Headers'
}]);
} else if (allowedHeaders.join) {
allowedHeaders = allowedHeaders.join(','); // .headers is an array, so turn it into a string
}
if (allowedHeaders && allowedHeaders.length) {
headers.push([{
key: 'Access-Control-Allow-Headers',
value: allowedHeaders
}]);
}
return headers;
}
function configureExposedHeaders(options) {
var headers = options.exposedHeaders;
if (!headers) {
return null;
} else if (headers.join) {
headers = headers.join(','); // .headers is an array, so turn it into a string
}
if (headers && headers.length) {
return {
key: 'Access-Control-Expose-Headers',
value: headers
};
}
return null;
}
function configureMaxAge(options) {
var maxAge = (typeof options.maxAge === 'number' || options.maxAge) && options.maxAge.toString()
if (maxAge && maxAge.length) {
return {
key: 'Access-Control-Max-Age',
value: maxAge
};
}
return null;
}
function applyHeaders(headers, res) {
for (var i = 0, n = headers.length; i < n; i++) {
var header = headers[i];
if (header) {
if (Array.isArray(header)) {
applyHeaders(header, res);
} else if (header.key === 'Vary' && header.value) {
vary(res, header.value);
} else if (header.value) {
res.setHeader(header.key, header.value);
}
}
}
}
function cors(options, req, res, next) {
var headers = [],
method = req.method && req.method.toUpperCase && req.method.toUpperCase();
if (method === 'OPTIONS') {
// preflight
headers.push(configureOrigin(options, req));
headers.push(configureCredentials(options))
headers.push(configureMethods(options))
headers.push(configureAllowedHeaders(options, req));
headers.push(configureMaxAge(options))
headers.push(configureExposedHeaders(options))
applyHeaders(headers, res);
if (options.preflightContinue) {
next();
} else {
// Safari (and potentially other browsers) need content-length 0,
// for 204 or they just hang waiting for a body
res.statusCode = options.optionsSuccessStatus;
res.setHeader('Content-Length', '0');
res.end();
}
} else {
// actual response
headers.push(configureOrigin(options, req));
headers.push(configureCredentials(options))
headers.push(configureExposedHeaders(options))
applyHeaders(headers, res);
next();
}
}
function middlewareWrapper(o) {
// if options are static (either via defaults or custom options passed in), wrap in a function
var optionsCallback = null;
if (typeof o === 'function') {
optionsCallback = o;
} else {
optionsCallback = function (req, cb) {
cb(null, o);
};
}
return function corsMiddleware(req, res, next) {
optionsCallback(req, function (err, options) {
if (err) {
next(err);
} else {
var corsOptions = assign({}, defaults, options);
var originCallback = null;
if (corsOptions.origin && typeof corsOptions.origin === 'function') {
originCallback = corsOptions.origin;
} else if (corsOptions.origin) {
originCallback = function (origin, cb) {
cb(null, corsOptions.origin);
};
}
if (originCallback) {
originCallback(req.headers.origin, function (err2, origin) {
if (err2 || !origin) {
next(err2);
} else {
corsOptions.origin = origin;
cors(corsOptions, req, res, next);
}
});
} else {
next();
}
}
});
};
}
// can pass either an options hash, an options delegate, or nothing
module.exports = middlewareWrapper;
}());
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{
"name": "cors",
"description": "Node.js CORS middleware",
"version": "2.8.6",
"author": "Troy Goode <troygoode@gmail.com> (https://github.com/troygoode/)",
"license": "MIT",
"keywords": [
"cors",
"express",
"connect",
"middleware"
],
"repository": "expressjs/cors",
"funding": {
"type": "opencollective",
"url": "https://opencollective.com/express"
},
"main": "./lib/index.js",
"dependencies": {
"object-assign": "^4",
"vary": "^1"
},
"devDependencies": {
"after": "0.8.2",
"eslint": "7.30.0",
"express": "4.21.2",
"mocha": "9.2.2",
"nyc": "15.1.0",
"supertest": "6.1.3"
},
"files": [
"lib/index.js"
],
"engines": {
"node": ">= 0.10"
},
"scripts": {
"test": "npm run lint && npm run test-ci",
"test-ci": "nyc --reporter=lcov --reporter=text mocha --require test/support/env",
"lint": "eslint lib test"
}
}
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repo_token: SIAeZjKYlHK74rbcFvNHMUzjRiMpflxve

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