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更新前端静态网页获取方式，放弃使用后端获取api

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Copyright (C) 2017 JakubPawlowicz.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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<h1 align="center">
<br/>
<img src="./logo.v2.svg" alt="clean-css logo" width="525px"/>
<br/>
<br/>
</h1>
[![npm version](https://img.shields.io/npm/v/clean-css.svg?style=flat)](https://www.npmjs.com/package/clean-css)
[![Build Status](https://img.shields.io/github/workflow/status/clean-css/clean-css/Tests/master)](https://github.com/clean-css/clean-css/actions?query=workflow%3ATests+branch%3Amaster)
[![PPC Linux Build Status](https://img.shields.io/travis/clean-css/clean-css/master.svg?style=flat&label=PPC%20Linux%20build)](https://travis-ci.org/clean-css/clean-css)
[![Dependency Status](https://img.shields.io/david/clean-css/clean-css.svg?style=flat)](https://david-dm.org/clean-css/clean-css)
[![npm Downloads](https://img.shields.io/npm/dm/clean-css.svg)](https://npmcharts.com/compare/clean-css?minimal=true)
clean-css is a fast and efficient CSS optimizer for [Node.js](http://nodejs.org/) platform and [any modern browser](https://clean-css.github.io/).
According to [tests](http://goalsmashers.github.io/css-minification-benchmark/) it is one of the best available.
**Table of Contents**
- [Node.js version support](#nodejs-version-support)
- [Install](#install)
- [Use](#use)
* [What's new in version 5.3](#whats-new-in-version-53)
* [What's new in version 5.0](#whats-new-in-version-50)
* [What's new in version 4.2](#whats-new-in-version-42)
* [What's new in version 4.1](#whats-new-in-version-41)
* [Important: 4.0 breaking changes](#important-40-breaking-changes)
* [Constructor options](#constructor-options)
* [Compatibility modes](#compatibility-modes)
* [Fetch option](#fetch-option)
* [Formatting options](#formatting-options)
* [Inlining options](#inlining-options)
* [Optimization levels](#optimization-levels)
+ [Level 0 optimizations](#level-0-optimizations)
+ [Level 1 optimizations](#level-1-optimizations)
+ [Level 2 optimizations](#level-2-optimizations)
* [Plugins](#plugins)
* [Minify method](#minify-method)
* [Promise interface](#promise-interface)
* [CLI utility](#cli-utility)
- [FAQ](#faq)
* [How to optimize multiple files?](#how-to-optimize-multiple-files)
* [How to process multiple files without concatenating them into one output file?](#how-to-process-multiple-files-without-concatenating-them-into-one-output-file)
* [How to process remote `@import`s correctly?](#how-to-process-remote-imports-correctly)
* [How to apply arbitrary transformations to CSS properties?](#how-to-apply-arbitrary-transformations-to-css-properties)
* [How to specify a custom rounding precision?](#how-to-specify-a-custom-rounding-precision)
* [How to keep a CSS fragment intact?](#how-to-keep-a-css-fragment-intact)
* [How to preserve a comment block?](#how-to-preserve-a-comment-block)
* [How to rebase relative image URLs?](#how-to-rebase-relative-image-urls)
* [How to work with source maps?](#how-to-work-with-source-maps)
* [How to apply level 1 & 2 optimizations at the same time?](#how-to-apply-level-1--2-optimizations-at-the-same-time)
* [What level 2 optimizations do?](#what-level-2-optimizations-do)
* [What errors and warnings are?](#what-errors-and-warnings-are)
* [How to use clean-css with build tools?](#how-to-use-clean-css-with-build-tools)
* [How to use clean-css from web browser?](#how-to-use-clean-css-from-web-browser)
- [Contributing](#contributing)
* [How to get started?](#how-to-get-started)
- [Acknowledgments](#acknowledgments)
- [License](#license)
# Node.js version support
clean-css requires Node.js 10.0+ (tested on Linux, OS X, and Windows)
# Install
```
npm install --save-dev clean-css
```
# Use
```js
var CleanCSS = require('clean-css');
var input = 'a{font-weight:bold;}';
var options = { /* options */ };
var output = new CleanCSS(options).minify(input);
```
## What's new in version 5.3
clean-css 5.3 introduces one new feature:
* variables can be optimized using level 1's `variableValueOptimizers` option, which accepts a list of [value optimizers](https://github.com/clean-css/clean-css/blob/master/lib/optimizer/level-1/value-optimizers.js) or a list of their names, e.g. `variableValueOptimizers: ['color', 'fraction']`.
## What's new in version 5.0
clean-css 5.0 introduced some breaking changes:
* Node.js 6.x and 8.x are officially no longer supported;
* `transform` callback in level-1 optimizations is removed in favor of new [plugins](#plugins) interface;
* changes default Internet Explorer compatibility from 10+ to >11, to revert the old default use `{ compatibility: 'ie10' }` flag;
* changes default `rebase` option from `true` to `false` so URLs are not rebased by default. Please note that if you set `rebaseTo` option it still counts as setting `rebase: true` to preserve some of the backward compatibility.
And on the new features side of things:
* format options now accepts numerical values for all breaks, which will allow you to have more control over output formatting, e.g. `format: {breaks: {afterComment: 2}}` means clean-css will add two line breaks after each comment
* a new `batch` option (defaults to `false`) is added, when set to `true` it will process all inputs, given either as an array or a hash, without concatenating them.
## What's new in version 4.2
clean-css 4.2 introduces the following changes / features:
* Adds `process` method for compatibility with optimize-css-assets-webpack-plugin;
* new `transition` property optimizer;
* preserves any CSS content between `/* clean-css ignore:start */` and `/* clean-css ignore:end */` comments;
* allows filtering based on selector in `transform` callback, see [example](#how-to-apply-arbitrary-transformations-to-css-properties);
* adds configurable line breaks via `format: { breakWith: 'lf' }` option.
## What's new in version 4.1
clean-css 4.1 introduces the following changes / features:
* `inline: false` as an alias to `inline: ['none']`;
* `multiplePseudoMerging` compatibility flag controlling merging of rules with multiple pseudo classes / elements;
* `removeEmpty` flag in level 1 optimizations controlling removal of rules and nested blocks;
* `removeEmpty` flag in level 2 optimizations controlling removal of rules and nested blocks;
* `compatibility: { selectors: { mergeLimit: <number> } }` flag in compatibility settings controlling maximum number of selectors in a single rule;
* `minify` method improved signature accepting a list of hashes for a predictable traversal;
* `selectorsSortingMethod` level 1 optimization allows `false` or `'none'` for disabling selector sorting;
* `fetch` option controlling a function for handling remote requests;
* new `font` shorthand and `font-*` longhand optimizers;
* removal of `optimizeFont` flag in level 1 optimizations due to new `font` shorthand optimizer;
* `skipProperties` flag in level 2 optimizations controlling which properties won't be optimized;
* new `animation` shorthand and `animation-*` longhand optimizers;
* `removeUnusedAtRules` level 2 optimization controlling removal of unused `@counter-style`, `@font-face`, `@keyframes`, and `@namespace` at rules;
* the [web interface](https://clean-css.github.io/) gets an improved settings panel with "reset to defaults", instant option changes, and settings being persisted across sessions.
## Important: 4.0 breaking changes
clean-css 4.0 introduces some breaking changes:
* API and CLI interfaces are split, so API stays in this repository while CLI moves to [clean-css-cli](https://github.com/clean-css/clean-css-cli);
* `root`, `relativeTo`, and `target` options are replaced by a single `rebaseTo` option - this means that rebasing URLs and import inlining is much simpler but may not be (YMMV) as powerful as in 3.x;
* `debug` option is gone as stats are always provided in output object under `stats` property;
* `roundingPrecision` is disabled by default;
* `roundingPrecision` applies to **all** units now, not only `px` as in 3.x;
* `processImport` and `processImportFrom` are merged into `inline` option which defaults to `local`. Remote `@import` rules are **NOT** inlined by default anymore;
* splits `inliner: { request: ..., timeout: ... }` option into `inlineRequest` and `inlineTimeout` options;
* remote resources without a protocol, e.g. `//fonts.googleapis.com/css?family=Domine:700`, are not inlined anymore;
* changes default Internet Explorer compatibility from 9+ to 10+, to revert the old default use `{ compatibility: 'ie9' }` flag;
* renames `keepSpecialComments` to `specialComments`;
* moves `roundingPrecision` and `specialComments` to level 1 optimizations options, see examples;
* moves `mediaMerging`, `restructuring`, `semanticMerging`, and `shorthandCompacting` to level 2 optimizations options, see examples below;
* renames `shorthandCompacting` option to `mergeIntoShorthands`;
* level 1 optimizations are the new default, up to 3.x it was level 2;
* `keepBreaks` option is replaced with `{ format: 'keep-breaks' }` to ease transition;
* `sourceMap` option has to be a boolean from now on - to specify an input source map pass it a 2nd argument to `minify` method or via a hash instead;
* `aggressiveMerging` option is removed as aggressive merging is replaced by smarter override merging.
## Constructor options
clean-css constructor accepts a hash as a parameter with the following options available:
* `compatibility` - controls compatibility mode used; defaults to `ie10+`; see [compatibility modes](#compatibility-modes) for examples;
* `fetch` - controls a function for handling remote requests; see [fetch option](#fetch-option) for examples (since 4.1.0);
* `format` - controls output CSS formatting; defaults to `false`; see [formatting options](#formatting-options) for examples;
* `inline` - controls `@import` inlining rules; defaults to `'local'`; see [inlining options](#inlining-options) for examples;
* `inlineRequest` - controls extra options for inlining remote `@import` rules, can be any of [HTTP(S) request options](https://nodejs.org/api/http.html#http_http_request_options_callback);
* `inlineTimeout` - controls number of milliseconds after which inlining a remote `@import` fails; defaults to 5000;
* `level` - controls optimization level used; defaults to `1`; see [optimization levels](#optimization-levels) for examples;
* `rebase` - controls URL rebasing; defaults to `false`;
* `rebaseTo` - controls a directory to which all URLs are rebased, most likely the directory under which the output file will live; defaults to the current directory;
* `returnPromise` - controls whether `minify` method returns a Promise object or not; defaults to `false`; see [promise interface](#promise-interface) for examples;
* `sourceMap` - controls whether an output source map is built; defaults to `false`;
* `sourceMapInlineSources` - controls embedding sources inside a source map's `sourcesContent` field; defaults to false.
## Compatibility modes
There is a certain number of compatibility mode shortcuts, namely:
* `new CleanCSS({ compatibility: '*' })` (default) - Internet Explorer 10+ compatibility mode
* `new CleanCSS({ compatibility: 'ie9' })` - Internet Explorer 9+ compatibility mode
* `new CleanCSS({ compatibility: 'ie8' })` - Internet Explorer 8+ compatibility mode
* `new CleanCSS({ compatibility: 'ie7' })` - Internet Explorer 7+ compatibility mode
Each of these modes is an alias to a [fine grained configuration](https://github.com/clean-css/clean-css/blob/master/lib/options/compatibility.js), with the following options available:
```js
new CleanCSS({
compatibility: {
colors: {
hexAlpha: false, // controls 4- and 8-character hex color support
opacity: true // controls `rgba()` / `hsla()` color support
},
properties: {
backgroundClipMerging: true, // controls background-clip merging into shorthand
backgroundOriginMerging: true, // controls background-origin merging into shorthand
backgroundSizeMerging: true, // controls background-size merging into shorthand
colors: true, // controls color optimizations
ieBangHack: false, // controls keeping IE bang hack
ieFilters: false, // controls keeping IE `filter` / `-ms-filter`
iePrefixHack: false, // controls keeping IE prefix hack
ieSuffixHack: false, // controls keeping IE suffix hack
merging: true, // controls property merging based on understandability
shorterLengthUnits: false, // controls shortening pixel units into `pc`, `pt`, or `in` units
spaceAfterClosingBrace: true, // controls keeping space after closing brace - `url() no-repeat` into `url()no-repeat`
urlQuotes: true, // controls keeping quoting inside `url()`
zeroUnits: true // controls removal of units `0` value
},
selectors: {
adjacentSpace: false, // controls extra space before `nav` element
ie7Hack: true, // controls removal of IE7 selector hacks, e.g. `*+html...`
mergeablePseudoClasses: [':active', ...], // controls a whitelist of mergeable pseudo classes
mergeablePseudoElements: ['::after', ...], // controls a whitelist of mergeable pseudo elements
mergeLimit: 8191, // controls maximum number of selectors in a single rule (since 4.1.0)
multiplePseudoMerging: true // controls merging of rules with multiple pseudo classes / elements (since 4.1.0)
},
units: {
ch: true, // controls treating `ch` as a supported unit
in: true, // controls treating `in` as a supported unit
pc: true, // controls treating `pc` as a supported unit
pt: true, // controls treating `pt` as a supported unit
rem: true, // controls treating `rem` as a supported unit
vh: true, // controls treating `vh` as a supported unit
vm: true, // controls treating `vm` as a supported unit
vmax: true, // controls treating `vmax` as a supported unit
vmin: true // controls treating `vmin` as a supported unit
}
}
})
```
You can also use a string when setting a compatibility mode, e.g.
```js
new CleanCSS({
compatibility: 'ie9,-properties.merging' // sets compatibility to IE9 mode with disabled property merging
})
```
## Fetch option
The `fetch` option accepts a function which handles remote resource fetching, e.g.
```js
var request = require('request');
var source = '@import url(http://example.com/path/to/stylesheet.css);';
new CleanCSS({
fetch: function (uri, inlineRequest, inlineTimeout, callback) {
request(uri, function (error, response, body) {
if (error) {
callback(error, null);
} else if (response && response.statusCode != 200) {
callback(response.statusCode, null);
} else {
callback(null, body);
}
});
}
}).minify(source);
```
This option provides a convenient way of overriding the default fetching logic if it doesn't support a particular feature, say CONNECT proxies.
Unless given, the default [loadRemoteResource](https://github.com/clean-css/clean-css/blob/master/lib/reader/load-remote-resource.js) logic is used.
## Formatting options
By default output CSS is formatted without any whitespace unless a `format` option is given.
First of all there are two shorthands:
```js
new CleanCSS({
format: 'beautify' // formats output in a really nice way
})
```
and
```js
new CleanCSS({
format: 'keep-breaks' // formats output the default way but adds line breaks for improved readability
})
```
however `format` option also accept a fine-grained set of options:
```js
new CleanCSS({
format: {
breaks: { // controls where to insert breaks
afterAtRule: false, // controls if a line break comes after an at-rule; e.g. `@charset`; defaults to `false`
afterBlockBegins: false, // controls if a line break comes after a block begins; e.g. `@media`; defaults to `false`
afterBlockEnds: false, // controls if a line break comes after a block ends, defaults to `false`
afterComment: false, // controls if a line break comes after a comment; defaults to `false`
afterProperty: false, // controls if a line break comes after a property; defaults to `false`
afterRuleBegins: false, // controls if a line break comes after a rule begins; defaults to `false`
afterRuleEnds: false, // controls if a line break comes after a rule ends; defaults to `false`
beforeBlockEnds: false, // controls if a line break comes before a block ends; defaults to `false`
betweenSelectors: false // controls if a line break comes between selectors; defaults to `false`
},
breakWith: '\n', // controls the new line character, can be `'\r\n'` or `'\n'` (aliased as `'windows'` and `'unix'` or `'crlf'` and `'lf'`); defaults to system one, so former on Windows and latter on Unix
indentBy: 0, // controls number of characters to indent with; defaults to `0`
indentWith: 'space', // controls a character to indent with, can be `'space'` or `'tab'`; defaults to `'space'`
spaces: { // controls where to insert spaces
aroundSelectorRelation: false, // controls if spaces come around selector relations; e.g. `div > a`; defaults to `false`
beforeBlockBegins: false, // controls if a space comes before a block begins; e.g. `.block {`; defaults to `false`
beforeValue: false // controls if a space comes before a value; e.g. `width: 1rem`; defaults to `false`
},
wrapAt: false, // controls maximum line length; defaults to `false`
semicolonAfterLastProperty: false // controls removing trailing semicolons in rule; defaults to `false` - means remove
}
})
```
Also since clean-css 5.0 you can use numerical values for all line breaks, which will repeat a line break that many times, e.g:
```js
new CleanCSS({
format: {
breaks: {
afterAtRule: 2,
afterBlockBegins: 1, // 1 is synonymous with `true`
afterBlockEnds: 2,
afterComment: 1,
afterProperty: 1,
afterRuleBegins: 1,
afterRuleEnds: 1,
beforeBlockEnds: 1,
betweenSelectors: 0 // 0 is synonymous with `false`
}
}
})
```
which will add nicer spacing between at rules and blocks.
## Inlining options
`inline` option whitelists which `@import` rules will be processed, e.g.
```js
new CleanCSS({
inline: ['local'] // default; enables local inlining only
})
```
```js
new CleanCSS({
inline: ['none'] // disables all inlining
})
```
```js
// introduced in clean-css 4.1.0
new CleanCSS({
inline: false // disables all inlining (alias to `['none']`)
})
```
```js
new CleanCSS({
inline: ['all'] // enables all inlining, same as ['local', 'remote']
})
```
```js
new CleanCSS({
inline: ['local', 'mydomain.example.com'] // enables local inlining plus given remote source
})
```
```js
new CleanCSS({
inline: ['local', 'remote', '!fonts.googleapis.com'] // enables all inlining but from given remote source
})
```
## Optimization levels
The `level` option can be either `0`, `1` (default), or `2`, e.g.
```js
new CleanCSS({
level: 2
})
```
or a fine-grained configuration given via a hash.
Please note that level 1 optimization options are generally safe while level 2 optimizations should be safe for most users.
### Level 0 optimizations
Level 0 optimizations simply means "no optimizations". Use it when you'd like to inline imports and / or rebase URLs but skip everything else.
### Level 1 optimizations
Level 1 optimizations (default) operate on single properties only, e.g. can remove units when not required, turn rgb colors to a shorter hex representation, remove comments, etc
Here is a full list of available options:
```js
new CleanCSS({
level: {
1: {
cleanupCharsets: true, // controls `@charset` moving to the front of a stylesheet; defaults to `true`
normalizeUrls: true, // controls URL normalization; defaults to `true`
optimizeBackground: true, // controls `background` property optimizations; defaults to `true`
optimizeBorderRadius: true, // controls `border-radius` property optimizations; defaults to `true`
optimizeFilter: true, // controls `filter` property optimizations; defaults to `true`
optimizeFont: true, // controls `font` property optimizations; defaults to `true`
optimizeFontWeight: true, // controls `font-weight` property optimizations; defaults to `true`
optimizeOutline: true, // controls `outline` property optimizations; defaults to `true`
removeEmpty: true, // controls removing empty rules and nested blocks; defaults to `true`
removeNegativePaddings: true, // controls removing negative paddings; defaults to `true`
removeQuotes: true, // controls removing quotes when unnecessary; defaults to `true`
removeWhitespace: true, // controls removing unused whitespace; defaults to `true`
replaceMultipleZeros: true, // contols removing redundant zeros; defaults to `true`
replaceTimeUnits: true, // controls replacing time units with shorter values; defaults to `true`
replaceZeroUnits: true, // controls replacing zero values with units; defaults to `true`
roundingPrecision: false, // rounds pixel values to `N` decimal places; `false` disables rounding; defaults to `false`
selectorsSortingMethod: 'standard', // denotes selector sorting method; can be `'natural'` or `'standard'`, `'none'`, or false (the last two since 4.1.0); defaults to `'standard'`
specialComments: 'all', // denotes a number of /*! ... */ comments preserved; defaults to `all`
tidyAtRules: true, // controls at-rules (e.g. `@charset`, `@import`) optimizing; defaults to `true`
tidyBlockScopes: true, // controls block scopes (e.g. `@media`) optimizing; defaults to `true`
tidySelectors: true, // controls selectors optimizing; defaults to `true`,
variableValueOptimizers: [] // controls value optimizers which are applied to variables
}
}
});
```
There is an `all` shortcut for toggling all options at the same time, e.g.
```js
new CleanCSS({
level: {
1: {
all: false, // set all values to `false`
tidySelectors: true // turns on optimizing selectors
}
}
});
```
### Level 2 optimizations
Level 2 optimizations operate at rules or multiple properties level, e.g. can remove duplicate rules, remove properties redefined further down a stylesheet, or restructure rules by moving them around.
Please note that if level 2 optimizations are turned on then, unless explicitely disabled, level 1 optimizations are applied as well.
Here is a full list of available options:
```js
new CleanCSS({
level: {
2: {
mergeAdjacentRules: true, // controls adjacent rules merging; defaults to true
mergeIntoShorthands: true, // controls merging properties into shorthands; defaults to true
mergeMedia: true, // controls `@media` merging; defaults to true
mergeNonAdjacentRules: true, // controls non-adjacent rule merging; defaults to true
mergeSemantically: false, // controls semantic merging; defaults to false
overrideProperties: true, // controls property overriding based on understandability; defaults to true
removeEmpty: true, // controls removing empty rules and nested blocks; defaults to `true`
reduceNonAdjacentRules: true, // controls non-adjacent rule reducing; defaults to true
removeDuplicateFontRules: true, // controls duplicate `@font-face` removing; defaults to true
removeDuplicateMediaBlocks: true, // controls duplicate `@media` removing; defaults to true
removeDuplicateRules: true, // controls duplicate rules removing; defaults to true
removeUnusedAtRules: false, // controls unused at rule removing; defaults to false (available since 4.1.0)
restructureRules: false, // controls rule restructuring; defaults to false
skipProperties: [] // controls which properties won't be optimized, defaults to `[]` which means all will be optimized (since 4.1.0)
}
}
});
```
There is an `all` shortcut for toggling all options at the same time, e.g.
```js
new CleanCSS({
level: {
2: {
all: false, // sets all values to `false`
removeDuplicateRules: true // turns on removing duplicate rules
}
}
});
```
## Plugins
In clean-css version 5 and above you can define plugins which run alongside level 1 and level 2 optimizations, e.g.
```js
var myPlugin = {
level1: {
property: function removeRepeatedBackgroundRepeat(_rule, property, _options) {
// So `background-repeat:no-repeat no-repeat` becomes `background-repeat:no-repeat`
if (property.name == 'background-repeat' && property.value.length == 2 && property.value[0][1] == property.value[1][1]) {
property.value.pop();
property.dirty = true;
}
}
}
}
new CleanCSS({plugins: [myPlugin]})
```
Search `test\module-test.js` for `plugins` or check out `lib/optimizer/level-1/property-optimizers` and `lib/optimizer/level-1/value-optimizers` for more examples.
__Important__: To rewrite your old `transform` as a plugin, check out [this commit](https://github.com/clean-css/clean-css/commit/b6ddc523267fc42cf0f6bd1626a79cad97319e17#diff-a71ef45f934725cdb25860dc0b606bcd59e3acee9788cd6df4f9d05339e8a153).
## Minify method
Once configured clean-css provides a `minify` method to optimize a given CSS, e.g.
```js
var output = new CleanCSS(options).minify(source);
```
The output of the `minify` method is a hash with following fields:
```js
console.log(output.styles); // optimized output CSS as a string
console.log(output.sourceMap); // output source map if requested with `sourceMap` option
console.log(output.errors); // a list of errors raised
console.log(output.warnings); // a list of warnings raised
console.log(output.stats.originalSize); // original content size after import inlining
console.log(output.stats.minifiedSize); // optimized content size
console.log(output.stats.timeSpent); // time spent on optimizations in milliseconds
console.log(output.stats.efficiency); // `(originalSize - minifiedSize) / originalSize`, e.g. 0.25 if size is reduced from 100 bytes to 75 bytes
```
Example: Minifying a CSS string:
```js
const CleanCSS = require("clean-css");
const output = new CleanCSS().minify(`
a {
color: blue;
}
div {
margin: 5px
}
`);
console.log(output);
// Log:
{
styles: 'a{color:#00f}div{margin:5px}',
stats: {
efficiency: 0.6704545454545454,
minifiedSize: 29,
originalSize: 88,
timeSpent: 6
},
errors: [],
inlinedStylesheets: [],
warnings: []
}
```
The `minify` method also accepts an input source map, e.g.
```js
var output = new CleanCSS(options).minify(source, inputSourceMap);
```
or a callback invoked when optimizations are finished, e.g.
```js
new CleanCSS(options).minify(source, function (error, output) {
// `output` is the same as in the synchronous call above
});
```
To optimize a single file, without reading it first, pass a path to it to `minify` method as follows:
```js
var output = new CleanCSS(options).minify(['path/to/file.css'])
```
(if you won't enclose the path in an array, it will be treated as a CSS source instead).
There are several ways to optimize multiple files at the same time, see [How to optimize multiple files?](#how-to-optimize-multiple-files).
## Promise interface
If you prefer clean-css to return a Promise object then you need to explicitely ask for it, e.g.
```js
new CleanCSS({ returnPromise: true })
.minify(source)
.then(function (output) { console.log(output.styles); })
.catch(function (error) { // deal with errors });
```
## CLI utility
Clean-css has an associated command line utility that can be installed separately using `npm install clean-css-cli`. For more detailed information, please visit https://github.com/clean-css/clean-css-cli.
# FAQ
## How to optimize multiple files?
It can be done either by passing an array of paths, or, when sources are already available, a hash or an array of hashes:
```js
new CleanCSS().minify(['path/to/file/one', 'path/to/file/two']);
```
```js
new CleanCSS().minify({
'path/to/file/one': {
styles: 'contents of file one'
},
'path/to/file/two': {
styles: 'contents of file two'
}
});
```
```js
new CleanCSS().minify([
{'path/to/file/one': {styles: 'contents of file one'}},
{'path/to/file/two': {styles: 'contents of file two'}}
]);
```
Passing an array of hashes allows you to explicitly specify the order in which the input files are concatenated. Whereas when you use a single hash the order is determined by the [traversal order of object properties](http://2ality.com/2015/10/property-traversal-order-es6.html) - available since 4.1.0.
Important note - any `@import` rules already present in the hash will be resolved in memory.
## How to process multiple files without concatenating them into one output file?
Since clean-css 5.0 you can, when passing an array of paths, hash, or array of hashes (see above), ask clean-css not to join styles into one output, but instead return stylesheets optimized one by one, e.g.
```js
var output = new CleanCSS({ batch: true }).minify(['path/to/file/one', 'path/to/file/two']);
var outputOfFile1 = output['path/to/file/one'].styles // all other fields, like errors, warnings, or stats are there too
var outputOfFile2 = output['path/to/file/two'].styles
```
## How to process remote `@import`s correctly?
In order to inline remote `@import` statements you need to provide a callback to minify method as fetching remote assets is an asynchronous operation, e.g.:
```js
var source = '@import url(http://example.com/path/to/remote/styles);';
new CleanCSS({ inline: ['remote'] }).minify(source, function (error, output) {
// output.styles
});
```
If you don't provide a callback, then remote `@import`s will be left as is.
## How to apply arbitrary transformations to CSS properties?
Please see [plugins](#plugins).
## How to specify a custom rounding precision?
The level 1 `roundingPrecision` optimization option accept a string with per-unit rounding precision settings, e.g.
```js
new CleanCSS({
level: {
1: {
roundingPrecision: 'all=3,px=5'
}
}
}).minify(source)
```
which sets all units rounding precision to 3 digits except `px` unit precision of 5 digits.
## How to optimize a stylesheet with custom `rpx` units?
Since `rpx` is a non standard unit (see [#1074](https://github.com/clean-css/clean-css/issues/1074)), it will be dropped by default as an invalid value.
However you can treat `rpx` units as regular ones:
```js
new CleanCSS({
compatibility: {
customUnits: {
rpx: true
}
}
}).minify(source)
```
## How to keep a CSS fragment intact?
Note: available since 4.2.0.
Wrap the CSS fragment in special comments which instruct clean-css to preserve it, e.g.
```css
.block-1 {
color: red
}
/* clean-css ignore:start */
.block-special {
color: transparent
}
/* clean-css ignore:end */
.block-2 {
margin: 0
}
```
Optimizing this CSS will result in the following output:
```css
.block-1{color:red}
.block-special {
color: transparent
}
.block-2{margin:0}
```
## How to preserve a comment block?
Use the `/*!` notation instead of the standard one `/*`:
```css
/*!
Important comments included in optimized output.
*/
```
## How to rebase relative image URLs?
clean-css will handle it automatically for you in the following cases:
* when full paths to input files are passed in as options;
* when correct paths are passed in via a hash;
* when `rebaseTo` is used with any of above two.
## How to work with source maps?
To generate a source map, use `sourceMap: true` option, e.g.:
```js
new CleanCSS({ sourceMap: true, rebaseTo: pathToOutputDirectory })
.minify(source, function (error, output) {
// access output.sourceMap for SourceMapGenerator object
// see https://github.com/mozilla/source-map/#sourcemapgenerator for more details
});
```
You can also pass an input source map directly as a 2nd argument to `minify` method:
```js
new CleanCSS({ sourceMap: true, rebaseTo: pathToOutputDirectory })
.minify(source, inputSourceMap, function (error, output) {
// access output.sourceMap to access SourceMapGenerator object
// see https://github.com/mozilla/source-map/#sourcemapgenerator for more details
});
```
or even multiple input source maps at once:
```js
new CleanCSS({ sourceMap: true, rebaseTo: pathToOutputDirectory }).minify({
'path/to/source/1': {
styles: '...styles...',
sourceMap: '...source-map...'
},
'path/to/source/2': {
styles: '...styles...',
sourceMap: '...source-map...'
}
}, function (error, output) {
// access output.sourceMap as above
});
```
## How to apply level 1 & 2 optimizations at the same time?
Using the hash configuration specifying both optimization levels, e.g.
```js
new CleanCSS({
level: {
1: {
all: true,
normalizeUrls: false
},
2: {
restructureRules: true
}
}
})
```
will apply level 1 optimizations, except url normalization, and default level 2 optimizations with rule restructuring.
## What level 2 optimizations do?
All level 2 optimizations are dispatched [here](https://github.com/clean-css/clean-css/blob/master/lib/optimizer/level-2/optimize.js#L67), and this is what they do:
* `recursivelyOptimizeBlocks` - does all the following operations on a nested block, like `@media` or `@keyframe`;
* `recursivelyOptimizeProperties` - optimizes properties in rulesets and flat at-rules, like @font-face, by splitting them into components (e.g. `margin` into `margin-(bottom|left|right|top)`), optimizing, and restoring them back. You may want to use `mergeIntoShorthands` option to control whether you want to turn multiple components into shorthands;
* `removeDuplicates` - gets rid of duplicate rulesets with exactly the same set of properties, e.g. when including a Sass / Less partial twice for no good reason;
* `mergeAdjacent` - merges adjacent rulesets with the same selector or rules;
* `reduceNonAdjacent` - identifies which properties are overridden in same-selector non-adjacent rulesets, and removes them;
* `mergeNonAdjacentBySelector` - identifies same-selector non-adjacent rulesets which can be moved (!) to be merged, requires all intermediate rulesets to not redefine the moved properties, or if redefined to have the same value;
* `mergeNonAdjacentByBody` - same as the one above but for same-selector non-adjacent rulesets;
* `restructure` - tries to reorganize different-selector different-rules rulesets so they take less space, e.g. `.one{padding:0}.two{margin:0}.one{margin-bottom:3px}` into `.two{margin:0}.one{padding:0;margin-bottom:3px}`;
* `removeDuplicateFontAtRules` - removes duplicated `@font-face` rules;
* `removeDuplicateMediaQueries` - removes duplicated `@media` nested blocks;
* `mergeMediaQueries` - merges non-adjacent `@media` at-rules by the same rules as `mergeNonAdjacentBy*` above;
## What errors and warnings are?
If clean-css encounters invalid CSS, it will try to remove the invalid part and continue optimizing the rest of the code. It will make you aware of the problem by generating an error or warning. Although clean-css can work with invalid CSS, it is always recommended that you fix warnings and errors in your CSS.
Example: Minify invalid CSS, resulting in two warnings:
```js
const CleanCSS = require("clean-css");
const output = new CleanCSS().minify(`
a {
-notarealproperty-: 5px;
color:
}
div {
margin: 5px
}
`);
console.log(output);
// Log:
{
styles: 'div{margin:5px}',
stats: {
efficiency: 0.8695652173913043,
minifiedSize: 15,
originalSize: 115,
timeSpent: 1
},
errors: [],
inlinedStylesheets: [],
warnings: [
"Invalid property name '-notarealproperty-' at 4:8. Ignoring.",
"Empty property 'color' at 5:8. Ignoring."
]
}
```
Example: Minify invalid CSS, resulting in one error:
```js
const CleanCSS = require("clean-css");
const output = new CleanCSS().minify(`
@import "idontexist.css";
a {
color: blue;
}
div {
margin: 5px
}
`);
console.log(output);
// Log:
{
styles: 'a{color:#00f}div{margin:5px}',
stats: {
efficiency: 0.7627118644067796,
minifiedSize: 28,
originalSize: 118,
timeSpent: 2
},
errors: [
'Ignoring local @import of "idontexist.css" as resource is missing.'
],
inlinedStylesheets: [],
warnings: []
}
```
## Clean-css for Gulp
An example of how you can include clean-css in gulp
```js
const { src, dest, series } = require('gulp');
const CleanCSS = require('clean-css');
const concat = require('gulp-concat');
function css() {
const options = {
compatibility: '*', // (default) - Internet Explorer 10+ compatibility mode
inline: ['all'], // enables all inlining, same as ['local', 'remote']
level: 2 // Optimization levels. The level option can be either 0, 1 (default), or 2, e.g.
// Please note that level 1 optimization options are generally safe while level 2 optimizations should be safe for most users.
};
return src('app/**/*.css')
.pipe(concat('style.min.css'))
.on('data', function(file) {
const buferFile = new CleanCSS(options).minify(file.contents)
return file.contents = Buffer.from(buferFile.styles)
})
.pipe(dest('build'))
}
exports.css = series(css)
```
## How to use clean-css with build tools?
There is a number of 3rd party plugins to popular build tools:
* [Broccoli](https://github.com/broccolijs/broccoli#broccoli): [broccoli-clean-css](https://github.com/shinnn/broccoli-clean-css)
* [Brunch](http://brunch.io/): [clean-css-brunch](https://github.com/brunch/clean-css-brunch)
* [Grunt](http://gruntjs.com): [grunt-contrib-cssmin](https://github.com/gruntjs/grunt-contrib-cssmin)
* [Gulp](http://gulpjs.com/): [gulp-clean-css](https://github.com/scniro/gulp-clean-css)
* [Gulp](http://gulpjs.com/): [using vinyl-map as a wrapper - courtesy of @sogko](https://github.com/clean-css/clean-css/issues/342)
* [component-builder2](https://github.com/component/builder2.js): [builder-clean-css](https://github.com/poying/builder-clean-css)
* [Metalsmith](http://metalsmith.io): [metalsmith-clean-css](https://github.com/aymericbeaumet/metalsmith-clean-css)
* [Lasso](https://github.com/lasso-js/lasso): [lasso-clean-css](https://github.com/yomed/lasso-clean-css)
* [Start](https://github.com/start-runner/start): [start-clean-css](https://github.com/start-runner/clean-css)
## How to use clean-css from web browser?
* https://clean-css.github.io/ (official web interface)
* http://refresh-sf.com/
* http://adamburgess.github.io/clean-css-online/
# Contributing
See [CONTRIBUTING.md](https://github.com/clean-css/clean-css/blob/master/CONTRIBUTING.md).
## How to get started?
First clone the sources:
```bash
git clone git@github.com:clean-css/clean-css.git
```
then install dependencies:
```bash
cd clean-css
npm install
```
then use any of the following commands to verify your copy:
```bash
npm run bench # for clean-css benchmarks (see [test/bench.js](https://github.com/clean-css/clean-css/blob/master/test/bench.js) for details)
npm run browserify # to create the browser-ready clean-css version
npm run check # to lint JS sources with [JSHint](https://github.com/jshint/jshint/)
npm test # to run all tests
```
# Acknowledgments
Sorted alphabetically by GitHub handle:
* [@abarre](https://github.com/abarre) (Anthony Barre) for improvements to `@import` processing;
* [@alexlamsl](https://github.com/alexlamsl) (Alex Lam S.L.) for testing early clean-css 4 versions, reporting bugs, and suggesting numerous improvements.
* [@altschuler](https://github.com/altschuler) (Simon Altschuler) for fixing `@import` processing inside comments;
* [@ben-eb](https://github.com/ben-eb) (Ben Briggs) for sharing ideas about CSS optimizations;
* [@davisjam](https://github.com/davisjam) (Jamie Davis) for disclosing ReDOS vulnerabilities;
* [@facelessuser](https://github.com/facelessuser) (Isaac) for pointing out a flaw in clean-css' stateless mode;
* [@grandrath](https://github.com/grandrath) (Martin Grandrath) for improving `minify` method source traversal in ES6;
* [@jmalonzo](https://github.com/jmalonzo) (Jan Michael Alonzo) for a patch removing node.js' old `sys` package;
* [@lukeapage](https://github.com/lukeapage) (Luke Page) for suggestions and testing the source maps feature;
Plus everyone else involved in [#125](https://github.com/clean-css/clean-css/issues/125) for pushing it forward;
* [@madwizard-thomas](https://github.com/madwizard-thomas) for sharing ideas about `@import` inlining and URL rebasing.
* [@ngyikp](https://github.com/ngyikp) (Ng Yik Phang) for testing early clean-css 4 versions, reporting bugs, and suggesting numerous improvements.
* [@wagenet](https://github.com/wagenet) (Peter Wagenet) for suggesting improvements to `@import` inlining behavior;
* [@venemo](https://github.com/venemo) (Timur Kristóf) for an outstanding contribution of advanced property optimizer for 2.2 release;
* [@vvo](https://github.com/vvo) (Vincent Voyer) for a patch with better empty element regex and for inspiring us to do many performance improvements in 0.4 release;
* [@xhmikosr](https://github.com/xhmikosr) for suggesting new features, like option to remove special comments and strip out URLs quotation, and pointing out numerous improvements like JSHint, media queries, etc.
# License
clean-css is released under the [MIT License](https://github.com/clean-css/clean-css/blob/master/LICENSE).

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module.exports = require('./lib/clean');

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# Change Log
## 0.5.6
* Fix for regression when people were using numbers as names in source maps. See
#236.
## 0.5.5
* Fix "regression" of unsupported, implementation behavior that half the world
happens to have come to depend on. See #235.
* Fix regression involving function hoisting in SpiderMonkey. See #233.
## 0.5.4
* Large performance improvements to source-map serialization. See #228 and #229.
## 0.5.3
* Do not include unnecessary distribution files. See
commit ef7006f8d1647e0a83fdc60f04f5a7ca54886f86.
## 0.5.2
* Include browser distributions of the library in package.json's `files`. See
issue #212.
## 0.5.1
* Fix latent bugs in IndexedSourceMapConsumer.prototype._parseMappings. See
ff05274becc9e6e1295ed60f3ea090d31d843379.
## 0.5.0
* Node 0.8 is no longer supported.
* Use webpack instead of dryice for bundling.
* Big speedups serializing source maps. See pull request #203.
* Fix a bug with `SourceMapConsumer.prototype.sourceContentFor` and sources that
explicitly start with the source root. See issue #199.
## 0.4.4
* Fix an issue where using a `SourceMapGenerator` after having created a
`SourceMapConsumer` from it via `SourceMapConsumer.fromSourceMap` failed. See
issue #191.
* Fix an issue with where `SourceMapGenerator` would mistakenly consider
different mappings as duplicates of each other and avoid generating them. See
issue #192.
## 0.4.3
* A very large number of performance improvements, particularly when parsing
source maps. Collectively about 75% of time shaved off of the source map
parsing benchmark!
* Fix a bug in `SourceMapConsumer.prototype.allGeneratedPositionsFor` and fuzzy
searching in the presence of a column option. See issue #177.
* Fix a bug with joining a source and its source root when the source is above
the root. See issue #182.
* Add the `SourceMapConsumer.prototype.hasContentsOfAllSources` method to
determine when all sources' contents are inlined into the source map. See
issue #190.
## 0.4.2
* Add an `.npmignore` file so that the benchmarks aren't pulled down by
dependent projects. Issue #169.
* Add an optional `column` argument to
`SourceMapConsumer.prototype.allGeneratedPositionsFor` and better handle lines
with no mappings. Issues #172 and #173.
## 0.4.1
* Fix accidentally defining a global variable. #170.
## 0.4.0
* The default direction for fuzzy searching was changed back to its original
direction. See #164.
* There is now a `bias` option you can supply to `SourceMapConsumer` to control
the fuzzy searching direction. See #167.
* About an 8% speed up in parsing source maps. See #159.
* Added a benchmark for parsing and generating source maps.
## 0.3.0
* Change the default direction that searching for positions fuzzes when there is
not an exact match. See #154.
* Support for environments using json2.js for JSON serialization. See #156.
## 0.2.0
* Support for consuming "indexed" source maps which do not have any remote
sections. See pull request #127. This introduces a minor backwards
incompatibility if you are monkey patching `SourceMapConsumer.prototype`
methods.
## 0.1.43
* Performance improvements for `SourceMapGenerator` and `SourceNode`. See issue
#148 for some discussion and issues #150, #151, and #152 for implementations.
## 0.1.42
* Fix an issue where `SourceNode`s from different versions of the source-map
library couldn't be used in conjunction with each other. See issue #142.
## 0.1.41
* Fix a bug with getting the source content of relative sources with a "./"
prefix. See issue #145 and [Bug 1090768](bugzil.la/1090768).
* Add the `SourceMapConsumer.prototype.computeColumnSpans` method to compute the
column span of each mapping.
* Add the `SourceMapConsumer.prototype.allGeneratedPositionsFor` method to find
all generated positions associated with a given original source and line.
## 0.1.40
* Performance improvements for parsing source maps in SourceMapConsumer.
## 0.1.39
* Fix a bug where setting a source's contents to null before any source content
had been set before threw a TypeError. See issue #131.
## 0.1.38
* Fix a bug where finding relative paths from an empty path were creating
absolute paths. See issue #129.
## 0.1.37
* Fix a bug where if the source root was an empty string, relative source paths
would turn into absolute source paths. Issue #124.
## 0.1.36
* Allow the `names` mapping property to be an empty string. Issue #121.
## 0.1.35
* A third optional parameter was added to `SourceNode.fromStringWithSourceMap`
to specify a path that relative sources in the second parameter should be
relative to. Issue #105.
* If no file property is given to a `SourceMapGenerator`, then the resulting
source map will no longer have a `null` file property. The property will
simply not exist. Issue #104.
* Fixed a bug where consecutive newlines were ignored in `SourceNode`s.
Issue #116.
## 0.1.34
* Make `SourceNode` work with windows style ("\r\n") newlines. Issue #103.
* Fix bug involving source contents and the
`SourceMapGenerator.prototype.applySourceMap`. Issue #100.
## 0.1.33
* Fix some edge cases surrounding path joining and URL resolution.
* Add a third parameter for relative path to
`SourceMapGenerator.prototype.applySourceMap`.
* Fix issues with mappings and EOLs.
## 0.1.32
* Fixed a bug where SourceMapConsumer couldn't handle negative relative columns
(issue 92).
* Fixed test runner to actually report number of failed tests as its process
exit code.
* Fixed a typo when reporting bad mappings (issue 87).
## 0.1.31
* Delay parsing the mappings in SourceMapConsumer until queried for a source
location.
* Support Sass source maps (which at the time of writing deviate from the spec
in small ways) in SourceMapConsumer.
## 0.1.30
* Do not join source root with a source, when the source is a data URI.
* Extend the test runner to allow running single specific test files at a time.
* Performance improvements in `SourceNode.prototype.walk` and
`SourceMapConsumer.prototype.eachMapping`.
* Source map browser builds will now work inside Workers.
* Better error messages when attempting to add an invalid mapping to a
`SourceMapGenerator`.
## 0.1.29
* Allow duplicate entries in the `names` and `sources` arrays of source maps
(usually from TypeScript) we are parsing. Fixes github issue 72.
## 0.1.28
* Skip duplicate mappings when creating source maps from SourceNode; github
issue 75.
## 0.1.27
* Don't throw an error when the `file` property is missing in SourceMapConsumer,
we don't use it anyway.
## 0.1.26
* Fix SourceNode.fromStringWithSourceMap for empty maps. Fixes github issue 70.
## 0.1.25
* Make compatible with browserify
## 0.1.24
* Fix issue with absolute paths and `file://` URIs. See
https://bugzilla.mozilla.org/show_bug.cgi?id=885597
## 0.1.23
* Fix issue with absolute paths and sourcesContent, github issue 64.
## 0.1.22
* Ignore duplicate mappings in SourceMapGenerator. Fixes github issue 21.
## 0.1.21
* Fixed handling of sources that start with a slash so that they are relative to
the source root's host.
## 0.1.20
* Fixed github issue #43: absolute URLs aren't joined with the source root
anymore.
## 0.1.19
* Using Travis CI to run tests.
## 0.1.18
* Fixed a bug in the handling of sourceRoot.
## 0.1.17
* Added SourceNode.fromStringWithSourceMap.
## 0.1.16
* Added missing documentation.
* Fixed the generating of empty mappings in SourceNode.
## 0.1.15
* Added SourceMapGenerator.applySourceMap.
## 0.1.14
* The sourceRoot is now handled consistently.
## 0.1.13
* Added SourceMapGenerator.fromSourceMap.
## 0.1.12
* SourceNode now generates empty mappings too.
## 0.1.11
* Added name support to SourceNode.
## 0.1.10
* Added sourcesContent support to the customer and generator.

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Copyright (c) 2009-2011, Mozilla Foundation and contributors
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the names of the Mozilla Foundation nor the names of project
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# Source Map
[![Build Status](https://travis-ci.org/mozilla/source-map.png?branch=master)](https://travis-ci.org/mozilla/source-map)
[![NPM](https://nodei.co/npm/source-map.png?downloads=true&downloadRank=true)](https://www.npmjs.com/package/source-map)
This is a library to generate and consume the source map format
[described here][format].
[format]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
## Use with Node
$ npm install source-map
## Use on the Web
<script src="https://raw.githubusercontent.com/mozilla/source-map/master/dist/source-map.min.js" defer></script>
--------------------------------------------------------------------------------
<!-- `npm run toc` to regenerate the Table of Contents -->
<!-- START doctoc generated TOC please keep comment here to allow auto update -->
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
## Table of Contents
- [Examples](#examples)
- [Consuming a source map](#consuming-a-source-map)
- [Generating a source map](#generating-a-source-map)
- [With SourceNode (high level API)](#with-sourcenode-high-level-api)
- [With SourceMapGenerator (low level API)](#with-sourcemapgenerator-low-level-api)
- [API](#api)
- [SourceMapConsumer](#sourcemapconsumer)
- [new SourceMapConsumer(rawSourceMap)](#new-sourcemapconsumerrawsourcemap)
- [SourceMapConsumer.prototype.computeColumnSpans()](#sourcemapconsumerprototypecomputecolumnspans)
- [SourceMapConsumer.prototype.originalPositionFor(generatedPosition)](#sourcemapconsumerprototypeoriginalpositionforgeneratedposition)
- [SourceMapConsumer.prototype.generatedPositionFor(originalPosition)](#sourcemapconsumerprototypegeneratedpositionfororiginalposition)
- [SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)](#sourcemapconsumerprototypeallgeneratedpositionsfororiginalposition)
- [SourceMapConsumer.prototype.hasContentsOfAllSources()](#sourcemapconsumerprototypehascontentsofallsources)
- [SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])](#sourcemapconsumerprototypesourcecontentforsource-returnnullonmissing)
- [SourceMapConsumer.prototype.eachMapping(callback, context, order)](#sourcemapconsumerprototypeeachmappingcallback-context-order)
- [SourceMapGenerator](#sourcemapgenerator)
- [new SourceMapGenerator([startOfSourceMap])](#new-sourcemapgeneratorstartofsourcemap)
- [SourceMapGenerator.fromSourceMap(sourceMapConsumer)](#sourcemapgeneratorfromsourcemapsourcemapconsumer)
- [SourceMapGenerator.prototype.addMapping(mapping)](#sourcemapgeneratorprototypeaddmappingmapping)
- [SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)](#sourcemapgeneratorprototypesetsourcecontentsourcefile-sourcecontent)
- [SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])](#sourcemapgeneratorprototypeapplysourcemapsourcemapconsumer-sourcefile-sourcemappath)
- [SourceMapGenerator.prototype.toString()](#sourcemapgeneratorprototypetostring)
- [SourceNode](#sourcenode)
- [new SourceNode([line, column, source[, chunk[, name]]])](#new-sourcenodeline-column-source-chunk-name)
- [SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])](#sourcenodefromstringwithsourcemapcode-sourcemapconsumer-relativepath)
- [SourceNode.prototype.add(chunk)](#sourcenodeprototypeaddchunk)
- [SourceNode.prototype.prepend(chunk)](#sourcenodeprototypeprependchunk)
- [SourceNode.prototype.setSourceContent(sourceFile, sourceContent)](#sourcenodeprototypesetsourcecontentsourcefile-sourcecontent)
- [SourceNode.prototype.walk(fn)](#sourcenodeprototypewalkfn)
- [SourceNode.prototype.walkSourceContents(fn)](#sourcenodeprototypewalksourcecontentsfn)
- [SourceNode.prototype.join(sep)](#sourcenodeprototypejoinsep)
- [SourceNode.prototype.replaceRight(pattern, replacement)](#sourcenodeprototypereplacerightpattern-replacement)
- [SourceNode.prototype.toString()](#sourcenodeprototypetostring)
- [SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])](#sourcenodeprototypetostringwithsourcemapstartofsourcemap)
<!-- END doctoc generated TOC please keep comment here to allow auto update -->
## Examples
### Consuming a source map
```js
var rawSourceMap = {
version: 3,
file: 'min.js',
names: ['bar', 'baz', 'n'],
sources: ['one.js', 'two.js'],
sourceRoot: 'http://example.com/www/js/',
mappings: 'CAAC,IAAI,IAAM,SAAUA,GAClB,OAAOC,IAAID;CCDb,IAAI,IAAM,SAAUE,GAClB,OAAOA'
};
var smc = new SourceMapConsumer(rawSourceMap);
console.log(smc.sources);
// [ 'http://example.com/www/js/one.js',
// 'http://example.com/www/js/two.js' ]
console.log(smc.originalPositionFor({
line: 2,
column: 28
}));
// { source: 'http://example.com/www/js/two.js',
// line: 2,
// column: 10,
// name: 'n' }
console.log(smc.generatedPositionFor({
source: 'http://example.com/www/js/two.js',
line: 2,
column: 10
}));
// { line: 2, column: 28 }
smc.eachMapping(function (m) {
// ...
});
```
### Generating a source map
In depth guide:
[**Compiling to JavaScript, and Debugging with Source Maps**](https://hacks.mozilla.org/2013/05/compiling-to-javascript-and-debugging-with-source-maps/)
#### With SourceNode (high level API)
```js
function compile(ast) {
switch (ast.type) {
case 'BinaryExpression':
return new SourceNode(
ast.location.line,
ast.location.column,
ast.location.source,
[compile(ast.left), " + ", compile(ast.right)]
);
case 'Literal':
return new SourceNode(
ast.location.line,
ast.location.column,
ast.location.source,
String(ast.value)
);
// ...
default:
throw new Error("Bad AST");
}
}
var ast = parse("40 + 2", "add.js");
console.log(compile(ast).toStringWithSourceMap({
file: 'add.js'
}));
// { code: '40 + 2',
// map: [object SourceMapGenerator] }
```
#### With SourceMapGenerator (low level API)
```js
var map = new SourceMapGenerator({
file: "source-mapped.js"
});
map.addMapping({
generated: {
line: 10,
column: 35
},
source: "foo.js",
original: {
line: 33,
column: 2
},
name: "christopher"
});
console.log(map.toString());
// '{"version":3,"file":"source-mapped.js","sources":["foo.js"],"names":["christopher"],"mappings":";;;;;;;;;mCAgCEA"}'
```
## API
Get a reference to the module:
```js
// Node.js
var sourceMap = require('source-map');
// Browser builds
var sourceMap = window.sourceMap;
// Inside Firefox
const sourceMap = require("devtools/toolkit/sourcemap/source-map.js");
```
### SourceMapConsumer
A SourceMapConsumer instance represents a parsed source map which we can query
for information about the original file positions by giving it a file position
in the generated source.
#### new SourceMapConsumer(rawSourceMap)
The only parameter is the raw source map (either as a string which can be
`JSON.parse`'d, or an object). According to the spec, source maps have the
following attributes:
* `version`: Which version of the source map spec this map is following.
* `sources`: An array of URLs to the original source files.
* `names`: An array of identifiers which can be referenced by individual
mappings.
* `sourceRoot`: Optional. The URL root from which all sources are relative.
* `sourcesContent`: Optional. An array of contents of the original source files.
* `mappings`: A string of base64 VLQs which contain the actual mappings.
* `file`: Optional. The generated filename this source map is associated with.
```js
var consumer = new sourceMap.SourceMapConsumer(rawSourceMapJsonData);
```
#### SourceMapConsumer.prototype.computeColumnSpans()
Compute the last column for each generated mapping. The last column is
inclusive.
```js
// Before:
consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" })
// [ { line: 2,
// column: 1 },
// { line: 2,
// column: 10 },
// { line: 2,
// column: 20 } ]
consumer.computeColumnSpans();
// After:
consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" })
// [ { line: 2,
// column: 1,
// lastColumn: 9 },
// { line: 2,
// column: 10,
// lastColumn: 19 },
// { line: 2,
// column: 20,
// lastColumn: Infinity } ]
```
#### SourceMapConsumer.prototype.originalPositionFor(generatedPosition)
Returns the original source, line, and column information for the generated
source's line and column positions provided. The only argument is an object with
the following properties:
* `line`: The line number in the generated source. Line numbers in
this library are 1-based (note that the underlying source map
specification uses 0-based line numbers -- this library handles the
translation).
* `column`: The column number in the generated source. Column numbers
in this library are 0-based.
* `bias`: Either `SourceMapConsumer.GREATEST_LOWER_BOUND` or
`SourceMapConsumer.LEAST_UPPER_BOUND`. Specifies whether to return the closest
element that is smaller than or greater than the one we are searching for,
respectively, if the exact element cannot be found. Defaults to
`SourceMapConsumer.GREATEST_LOWER_BOUND`.
and an object is returned with the following properties:
* `source`: The original source file, or null if this information is not
available.
* `line`: The line number in the original source, or null if this information is
not available. The line number is 1-based.
* `column`: The column number in the original source, or null if this
information is not available. The column number is 0-based.
* `name`: The original identifier, or null if this information is not available.
```js
consumer.originalPositionFor({ line: 2, column: 10 })
// { source: 'foo.coffee',
// line: 2,
// column: 2,
// name: null }
consumer.originalPositionFor({ line: 99999999999999999, column: 999999999999999 })
// { source: null,
// line: null,
// column: null,
// name: null }
```
#### SourceMapConsumer.prototype.generatedPositionFor(originalPosition)
Returns the generated line and column information for the original source,
line, and column positions provided. The only argument is an object with
the following properties:
* `source`: The filename of the original source.
* `line`: The line number in the original source. The line number is
1-based.
* `column`: The column number in the original source. The column
number is 0-based.
and an object is returned with the following properties:
* `line`: The line number in the generated source, or null. The line
number is 1-based.
* `column`: The column number in the generated source, or null. The
column number is 0-based.
```js
consumer.generatedPositionFor({ source: "example.js", line: 2, column: 10 })
// { line: 1,
// column: 56 }
```
#### SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)
Returns all generated line and column information for the original source, line,
and column provided. If no column is provided, returns all mappings
corresponding to a either the line we are searching for or the next closest line
that has any mappings. Otherwise, returns all mappings corresponding to the
given line and either the column we are searching for or the next closest column
that has any offsets.
The only argument is an object with the following properties:
* `source`: The filename of the original source.
* `line`: The line number in the original source. The line number is
1-based.
* `column`: Optional. The column number in the original source. The
column number is 0-based.
and an array of objects is returned, each with the following properties:
* `line`: The line number in the generated source, or null. The line
number is 1-based.
* `column`: The column number in the generated source, or null. The
column number is 0-based.
```js
consumer.allGeneratedpositionsfor({ line: 2, source: "foo.coffee" })
// [ { line: 2,
// column: 1 },
// { line: 2,
// column: 10 },
// { line: 2,
// column: 20 } ]
```
#### SourceMapConsumer.prototype.hasContentsOfAllSources()
Return true if we have the embedded source content for every source listed in
the source map, false otherwise.
In other words, if this method returns `true`, then
`consumer.sourceContentFor(s)` will succeed for every source `s` in
`consumer.sources`.
```js
// ...
if (consumer.hasContentsOfAllSources()) {
consumerReadyCallback(consumer);
} else {
fetchSources(consumer, consumerReadyCallback);
}
// ...
```
#### SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])
Returns the original source content for the source provided. The only
argument is the URL of the original source file.
If the source content for the given source is not found, then an error is
thrown. Optionally, pass `true` as the second param to have `null` returned
instead.
```js
consumer.sources
// [ "my-cool-lib.clj" ]
consumer.sourceContentFor("my-cool-lib.clj")
// "..."
consumer.sourceContentFor("this is not in the source map");
// Error: "this is not in the source map" is not in the source map
consumer.sourceContentFor("this is not in the source map", true);
// null
```
#### SourceMapConsumer.prototype.eachMapping(callback, context, order)
Iterate over each mapping between an original source/line/column and a
generated line/column in this source map.
* `callback`: The function that is called with each mapping. Mappings have the
form `{ source, generatedLine, generatedColumn, originalLine, originalColumn,
name }`
* `context`: Optional. If specified, this object will be the value of `this`
every time that `callback` is called.
* `order`: Either `SourceMapConsumer.GENERATED_ORDER` or
`SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to iterate over
the mappings sorted by the generated file's line/column order or the
original's source/line/column order, respectively. Defaults to
`SourceMapConsumer.GENERATED_ORDER`.
```js
consumer.eachMapping(function (m) { console.log(m); })
// ...
// { source: 'illmatic.js',
// generatedLine: 1,
// generatedColumn: 0,
// originalLine: 1,
// originalColumn: 0,
// name: null }
// { source: 'illmatic.js',
// generatedLine: 2,
// generatedColumn: 0,
// originalLine: 2,
// originalColumn: 0,
// name: null }
// ...
```
### SourceMapGenerator
An instance of the SourceMapGenerator represents a source map which is being
built incrementally.
#### new SourceMapGenerator([startOfSourceMap])
You may pass an object with the following properties:
* `file`: The filename of the generated source that this source map is
associated with.
* `sourceRoot`: A root for all relative URLs in this source map.
* `skipValidation`: Optional. When `true`, disables validation of mappings as
they are added. This can improve performance but should be used with
discretion, as a last resort. Even then, one should avoid using this flag when
running tests, if possible.
```js
var generator = new sourceMap.SourceMapGenerator({
file: "my-generated-javascript-file.js",
sourceRoot: "http://example.com/app/js/"
});
```
#### SourceMapGenerator.fromSourceMap(sourceMapConsumer)
Creates a new `SourceMapGenerator` from an existing `SourceMapConsumer` instance.
* `sourceMapConsumer` The SourceMap.
```js
var generator = sourceMap.SourceMapGenerator.fromSourceMap(consumer);
```
#### SourceMapGenerator.prototype.addMapping(mapping)
Add a single mapping from original source line and column to the generated
source's line and column for this source map being created. The mapping object
should have the following properties:
* `generated`: An object with the generated line and column positions.
* `original`: An object with the original line and column positions.
* `source`: The original source file (relative to the sourceRoot).
* `name`: An optional original token name for this mapping.
```js
generator.addMapping({
source: "module-one.scm",
original: { line: 128, column: 0 },
generated: { line: 3, column: 456 }
})
```
#### SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)
Set the source content for an original source file.
* `sourceFile` the URL of the original source file.
* `sourceContent` the content of the source file.
```js
generator.setSourceContent("module-one.scm",
fs.readFileSync("path/to/module-one.scm"))
```
#### SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])
Applies a SourceMap for a source file to the SourceMap.
Each mapping to the supplied source file is rewritten using the
supplied SourceMap. Note: The resolution for the resulting mappings
is the minimum of this map and the supplied map.
* `sourceMapConsumer`: The SourceMap to be applied.
* `sourceFile`: Optional. The filename of the source file.
If omitted, sourceMapConsumer.file will be used, if it exists.
Otherwise an error will be thrown.
* `sourceMapPath`: Optional. The dirname of the path to the SourceMap
to be applied. If relative, it is relative to the SourceMap.
This parameter is needed when the two SourceMaps aren't in the same
directory, and the SourceMap to be applied contains relative source
paths. If so, those relative source paths need to be rewritten
relative to the SourceMap.
If omitted, it is assumed that both SourceMaps are in the same directory,
thus not needing any rewriting. (Supplying `'.'` has the same effect.)
#### SourceMapGenerator.prototype.toString()
Renders the source map being generated to a string.
```js
generator.toString()
// '{"version":3,"sources":["module-one.scm"],"names":[],"mappings":"...snip...","file":"my-generated-javascript-file.js","sourceRoot":"http://example.com/app/js/"}'
```
### SourceNode
SourceNodes provide a way to abstract over interpolating and/or concatenating
snippets of generated JavaScript source code, while maintaining the line and
column information associated between those snippets and the original source
code. This is useful as the final intermediate representation a compiler might
use before outputting the generated JS and source map.
#### new SourceNode([line, column, source[, chunk[, name]]])
* `line`: The original line number associated with this source node, or null if
it isn't associated with an original line. The line number is 1-based.
* `column`: The original column number associated with this source node, or null
if it isn't associated with an original column. The column number
is 0-based.
* `source`: The original source's filename; null if no filename is provided.
* `chunk`: Optional. Is immediately passed to `SourceNode.prototype.add`, see
below.
* `name`: Optional. The original identifier.
```js
var node = new SourceNode(1, 2, "a.cpp", [
new SourceNode(3, 4, "b.cpp", "extern int status;\n"),
new SourceNode(5, 6, "c.cpp", "std::string* make_string(size_t n);\n"),
new SourceNode(7, 8, "d.cpp", "int main(int argc, char** argv) {}\n"),
]);
```
#### SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])
Creates a SourceNode from generated code and a SourceMapConsumer.
* `code`: The generated code
* `sourceMapConsumer` The SourceMap for the generated code
* `relativePath` The optional path that relative sources in `sourceMapConsumer`
should be relative to.
```js
var consumer = new SourceMapConsumer(fs.readFileSync("path/to/my-file.js.map", "utf8"));
var node = SourceNode.fromStringWithSourceMap(fs.readFileSync("path/to/my-file.js"),
consumer);
```
#### SourceNode.prototype.add(chunk)
Add a chunk of generated JS to this source node.
* `chunk`: A string snippet of generated JS code, another instance of
`SourceNode`, or an array where each member is one of those things.
```js
node.add(" + ");
node.add(otherNode);
node.add([leftHandOperandNode, " + ", rightHandOperandNode]);
```
#### SourceNode.prototype.prepend(chunk)
Prepend a chunk of generated JS to this source node.
* `chunk`: A string snippet of generated JS code, another instance of
`SourceNode`, or an array where each member is one of those things.
```js
node.prepend("/** Build Id: f783haef86324gf **/\n\n");
```
#### SourceNode.prototype.setSourceContent(sourceFile, sourceContent)
Set the source content for a source file. This will be added to the
`SourceMap` in the `sourcesContent` field.
* `sourceFile`: The filename of the source file
* `sourceContent`: The content of the source file
```js
node.setSourceContent("module-one.scm",
fs.readFileSync("path/to/module-one.scm"))
```
#### SourceNode.prototype.walk(fn)
Walk over the tree of JS snippets in this node and its children. The walking
function is called once for each snippet of JS and is passed that snippet and
the its original associated source's line/column location.
* `fn`: The traversal function.
```js
var node = new SourceNode(1, 2, "a.js", [
new SourceNode(3, 4, "b.js", "uno"),
"dos",
[
"tres",
new SourceNode(5, 6, "c.js", "quatro")
]
]);
node.walk(function (code, loc) { console.log("WALK:", code, loc); })
// WALK: uno { source: 'b.js', line: 3, column: 4, name: null }
// WALK: dos { source: 'a.js', line: 1, column: 2, name: null }
// WALK: tres { source: 'a.js', line: 1, column: 2, name: null }
// WALK: quatro { source: 'c.js', line: 5, column: 6, name: null }
```
#### SourceNode.prototype.walkSourceContents(fn)
Walk over the tree of SourceNodes. The walking function is called for each
source file content and is passed the filename and source content.
* `fn`: The traversal function.
```js
var a = new SourceNode(1, 2, "a.js", "generated from a");
a.setSourceContent("a.js", "original a");
var b = new SourceNode(1, 2, "b.js", "generated from b");
b.setSourceContent("b.js", "original b");
var c = new SourceNode(1, 2, "c.js", "generated from c");
c.setSourceContent("c.js", "original c");
var node = new SourceNode(null, null, null, [a, b, c]);
node.walkSourceContents(function (source, contents) { console.log("WALK:", source, ":", contents); })
// WALK: a.js : original a
// WALK: b.js : original b
// WALK: c.js : original c
```
#### SourceNode.prototype.join(sep)
Like `Array.prototype.join` except for SourceNodes. Inserts the separator
between each of this source node's children.
* `sep`: The separator.
```js
var lhs = new SourceNode(1, 2, "a.rs", "my_copy");
var operand = new SourceNode(3, 4, "a.rs", "=");
var rhs = new SourceNode(5, 6, "a.rs", "orig.clone()");
var node = new SourceNode(null, null, null, [ lhs, operand, rhs ]);
var joinedNode = node.join(" ");
```
#### SourceNode.prototype.replaceRight(pattern, replacement)
Call `String.prototype.replace` on the very right-most source snippet. Useful
for trimming white space from the end of a source node, etc.
* `pattern`: The pattern to replace.
* `replacement`: The thing to replace the pattern with.
```js
// Trim trailing white space.
node.replaceRight(/\s*$/, "");
```
#### SourceNode.prototype.toString()
Return the string representation of this source node. Walks over the tree and
concatenates all the various snippets together to one string.
```js
var node = new SourceNode(1, 2, "a.js", [
new SourceNode(3, 4, "b.js", "uno"),
"dos",
[
"tres",
new SourceNode(5, 6, "c.js", "quatro")
]
]);
node.toString()
// 'unodostresquatro'
```
#### SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])
Returns the string representation of this tree of source nodes, plus a
SourceMapGenerator which contains all the mappings between the generated and
original sources.
The arguments are the same as those to `new SourceMapGenerator`.
```js
var node = new SourceNode(1, 2, "a.js", [
new SourceNode(3, 4, "b.js", "uno"),
"dos",
[
"tres",
new SourceNode(5, 6, "c.js", "quatro")
]
]);
node.toStringWithSourceMap({ file: "my-output-file.js" })
// { code: 'unodostresquatro',
// map: [object SourceMapGenerator] }
```

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{
"name": "source-map",
"description": "Generates and consumes source maps",
"version": "0.6.1",
"homepage": "https://github.com/mozilla/source-map",
"author": "Nick Fitzgerald <nfitzgerald@mozilla.com>",
"contributors": [
"Tobias Koppers <tobias.koppers@googlemail.com>",
"Duncan Beevers <duncan@dweebd.com>",
"Stephen Crane <scrane@mozilla.com>",
"Ryan Seddon <seddon.ryan@gmail.com>",
"Miles Elam <miles.elam@deem.com>",
"Mihai Bazon <mihai.bazon@gmail.com>",
"Michael Ficarra <github.public.email@michael.ficarra.me>",
"Todd Wolfson <todd@twolfson.com>",
"Alexander Solovyov <alexander@solovyov.net>",
"Felix Gnass <fgnass@gmail.com>",
"Conrad Irwin <conrad.irwin@gmail.com>",
"usrbincc <usrbincc@yahoo.com>",
"David Glasser <glasser@davidglasser.net>",
"Chase Douglas <chase@newrelic.com>",
"Evan Wallace <evan.exe@gmail.com>",
"Heather Arthur <fayearthur@gmail.com>",
"Hugh Kennedy <hughskennedy@gmail.com>",
"David Glasser <glasser@davidglasser.net>",
"Simon Lydell <simon.lydell@gmail.com>",
"Jmeas Smith <jellyes2@gmail.com>",
"Michael Z Goddard <mzgoddard@gmail.com>",
"azu <azu@users.noreply.github.com>",
"John Gozde <john@gozde.ca>",
"Adam Kirkton <akirkton@truefitinnovation.com>",
"Chris Montgomery <christopher.montgomery@dowjones.com>",
"J. Ryan Stinnett <jryans@gmail.com>",
"Jack Herrington <jherrington@walmartlabs.com>",
"Chris Truter <jeffpalentine@gmail.com>",
"Daniel Espeset <daniel@danielespeset.com>",
"Jamie Wong <jamie.lf.wong@gmail.com>",
"Eddy Bruël <ejpbruel@mozilla.com>",
"Hawken Rives <hawkrives@gmail.com>",
"Gilad Peleg <giladp007@gmail.com>",
"djchie <djchie.dev@gmail.com>",
"Gary Ye <garysye@gmail.com>",
"Nicolas Lalevée <nicolas.lalevee@hibnet.org>"
],
"repository": {
"type": "git",
"url": "http://github.com/mozilla/source-map.git"
},
"main": "./source-map.js",
"files": [
"source-map.js",
"source-map.d.ts",
"lib/",
"dist/source-map.debug.js",
"dist/source-map.js",
"dist/source-map.min.js",
"dist/source-map.min.js.map"
],
"engines": {
"node": ">=0.10.0"
},
"license": "BSD-3-Clause",
"scripts": {
"test": "npm run build && node test/run-tests.js",
"build": "webpack --color",
"toc": "doctoc --title '## Table of Contents' README.md && doctoc --title '## Table of Contents' CONTRIBUTING.md"
},
"devDependencies": {
"doctoc": "^0.15.0",
"webpack": "^1.12.0"
},
"typings": "source-map"
}

98
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export interface StartOfSourceMap {
file?: string;
sourceRoot?: string;
}
export interface RawSourceMap extends StartOfSourceMap {
version: string;
sources: string[];
names: string[];
sourcesContent?: string[];
mappings: string;
}
export interface Position {
line: number;
column: number;
}
export interface LineRange extends Position {
lastColumn: number;
}
export interface FindPosition extends Position {
// SourceMapConsumer.GREATEST_LOWER_BOUND or SourceMapConsumer.LEAST_UPPER_BOUND
bias?: number;
}
export interface SourceFindPosition extends FindPosition {
source: string;
}
export interface MappedPosition extends Position {
source: string;
name?: string;
}
export interface MappingItem {
source: string;
generatedLine: number;
generatedColumn: number;
originalLine: number;
originalColumn: number;
name: string;
}
export class SourceMapConsumer {
static GENERATED_ORDER: number;
static ORIGINAL_ORDER: number;
static GREATEST_LOWER_BOUND: number;
static LEAST_UPPER_BOUND: number;
constructor(rawSourceMap: RawSourceMap);
computeColumnSpans(): void;
originalPositionFor(generatedPosition: FindPosition): MappedPosition;
generatedPositionFor(originalPosition: SourceFindPosition): LineRange;
allGeneratedPositionsFor(originalPosition: MappedPosition): Position[];
hasContentsOfAllSources(): boolean;
sourceContentFor(source: string, returnNullOnMissing?: boolean): string;
eachMapping(callback: (mapping: MappingItem) => void, context?: any, order?: number): void;
}
export interface Mapping {
generated: Position;
original: Position;
source: string;
name?: string;
}
export class SourceMapGenerator {
constructor(startOfSourceMap?: StartOfSourceMap);
static fromSourceMap(sourceMapConsumer: SourceMapConsumer): SourceMapGenerator;
addMapping(mapping: Mapping): void;
setSourceContent(sourceFile: string, sourceContent: string): void;
applySourceMap(sourceMapConsumer: SourceMapConsumer, sourceFile?: string, sourceMapPath?: string): void;
toString(): string;
}
export interface CodeWithSourceMap {
code: string;
map: SourceMapGenerator;
}
export class SourceNode {
constructor();
constructor(line: number, column: number, source: string);
constructor(line: number, column: number, source: string, chunk?: string, name?: string);
static fromStringWithSourceMap(code: string, sourceMapConsumer: SourceMapConsumer, relativePath?: string): SourceNode;
add(chunk: string): void;
prepend(chunk: string): void;
setSourceContent(sourceFile: string, sourceContent: string): void;
walk(fn: (chunk: string, mapping: MappedPosition) => void): void;
walkSourceContents(fn: (file: string, content: string) => void): void;
join(sep: string): SourceNode;
replaceRight(pattern: string, replacement: string): SourceNode;
toString(): string;
toStringWithSourceMap(startOfSourceMap?: StartOfSourceMap): CodeWithSourceMap;
}

8
frontend/node_modules/clean-css/node_modules/source-map/source-map.js generated vendored Normal file
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@@ -0,0 +1,8 @@
/*
* Copyright 2009-2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE.txt or:
* http://opensource.org/licenses/BSD-3-Clause
*/
exports.SourceMapGenerator = require('./lib/source-map-generator').SourceMapGenerator;
exports.SourceMapConsumer = require('./lib/source-map-consumer').SourceMapConsumer;
exports.SourceNode = require('./lib/source-node').SourceNode;

48
frontend/node_modules/clean-css/package.json generated vendored Normal file
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{
"name": "clean-css",
"version": "5.3.3",
"author": "Jakub Pawlowicz <contact@jakubpawlowicz.com>",
"description": "A well-tested CSS minifier",
"license": "MIT",
"keywords": [
"css",
"minifier"
],
"homepage": "https://github.com/clean-css/clean-css",
"repository": {
"type": "git",
"url": "https://github.com/clean-css/clean-css.git"
},
"bugs": {
"url": "https://github.com/clean-css/clean-css/issues"
},
"main": "index.js",
"files": [
"lib",
"History.md",
"index.js",
"LICENSE"
],
"scripts": {
"browserify": "browserify --standalone CleanCSS index.js | uglifyjs --compress --mangle -o cleancss-browser.js",
"bench": "node ./test/bench.js",
"lint": "eslint ./lib/ --ext .js",
"test": "vows"
},
"dependencies": {
"source-map": "~0.6.0"
},
"devDependencies": {
"browserify": "^17.0.0",
"eslint": "^8.8.0",
"eslint-config-airbnb-base": "^15.0.0",
"http-proxy": "1.x",
"nock": "^13.0.0",
"server-destroy": "1.x",
"uglify-js": ">=2.6.1",
"vows": "0.8.x"
},
"engines": {
"node": ">= 10.0"
}
}