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# Changes to PostCSS Custom Selectors
### 5.1.2 (September 20, 2018)
- Fixed: Do not break on an empty `importFrom` object
### 5.1.1 (September 18, 2018)
- Fixed: Selectors like `.foo:--h1` become `h1.foo` instead of `.fooh1`
### 5.1.0 (September 12, 2018)
- Added: New `exportTo` function to specify where to export custom selectors
- Updated: `importFrom` option to support passing it a function
### 5.0.0 (September 7, 2018)
- Added: New `preserve` option to preserve custom selectors and rules using them
- Added: New `importFrom` option to specify where to import custom selectors
- Added: Support for PostCSS v7
- Added: Support for Node v6+
### 4.0.1 (May 15, 2017)
- Fixed: incorrect export
### 4.0.0 (May 12, 2017)
- Added: compatibility with postcss v6.x
### 3.0.0 (August 25, 2015)
- Removed: compatibility with postcss v4.x
- Added: compatibility with postcss v5.x
### 2.3.0 (July 14, 2015)
* Fixed: Nested/mixed selectors now works correctly
([#19](https://github.com/postcss/postcss-custom-selectors/issues/19))
* Added: `transformMatches` option to limit transformation to :matches()
replacements.
### 2.2.0 (June 30, 2015)
* Fixed: No more useless warnings for undefined non custom selectors
([#22](https://github.com/postcss/postcss-custom-selectors/issues/22))
* Changed: warnings now use PostCSS message API
### 2.1.1 (June 30, 2015)
* Fixed: the lineBreak option keeping the selectors indent
([#18](https://github.com/postcss/postcss-custom-selectors/issues/18))
* Fixed: the tip of an undefined selector
([#20](https://github.com/postcss/postcss-custom-selectors/issues/20))
### 2.1.0 (June 4, 2015)
* Changed: use PostCSS 4.1 plugin API
([#13](https://github.com/postcss/postcss-custom-selectors/issues/13))
### 2.0.1 (June 3, 2015)
* Fixed: `(foo, bar)` conversion error exists in the selector
(See also [:matches() test](test/fixtures/matches/input.css))
### 2.0.0 (May 29, 2015)
* Removed: no longer support `::` or `--` to defined a custom selectors,
you must use the syntax `:--` to define it.
([#6](https://github.com/postcss/postcss-custom-selectors/issues/6))
* Fixed: two or more consecutive hyphens in selector don't output `undefined`
([#14](https://github.com/postcss/postcss-custom-selectors/issues/14))
### 1.1.1 (April 6, 2015)
* Fixed: add support for multilines definition
### 1.1.0 (December 6, 2014)
* Added: "lineBreak" option
### 1.0.0 (December 6, 2014)
* First release

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backend/frontend/node_modules/postcss-custom-selectors/LICENSE.md generated vendored Normal file
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# The MIT License (MIT)
Copyright © PostCSS
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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backend/frontend/node_modules/postcss-custom-selectors/README.md generated vendored Normal file
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# PostCSS Custom Selectors [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS" width="90" height="90" align="right">][postcss]
[![NPM Version][npm-img]][npm-url]
[![CSS Standard Status][css-img]][css-url]
[![Build Status][cli-img]][cli-url]
[![Support Chat][git-img]][git-url]
[PostCSS Custom Selectors] lets you use Custom Selectors in CSS, following the
[CSS Extensions] specification.
```pcss
@custom-selector :--heading h1, h2, h3;
article :--heading + p {
margin-top: 0;
}
/* becomes */
article h1 + p, article h2 + p, article h3 + p {}
```
## Usage
Add [PostCSS Custom Selectors] to your project:
```bash
npm install postcss-custom-selectors --save-dev
```
Use [PostCSS Custom Selectors] to process your CSS:
```js
const postcssCustomSelectors = require('postcss-custom-selectors');
postcssCustomSelectors.process(YOUR_CSS /*, processOptions, pluginOptions */);
```
Or use it as a [PostCSS] plugin:
```js
const postcss = require('postcss');
const postcssCustomSelectors = require('postcss-custom-selectors');
postcss([
postcssCustomSelectors(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);
```
[PostCSS Custom Selectors] runs in all Node environments, with special instructions for:
| [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Create React App](INSTALL.md#create-react-app) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) |
| --- | --- | --- | --- | --- | --- |
## Options
### preserve
The `preserve` option determines whether custom selectors and rules using
custom selectors should be preserved in their original form.
```pcss
@custom-selector :--heading h1, h2, h3;
article :--heading + p {
margin-top: 0;
}
/* becomes */
article h1 + p, article h2 + p, article h3 + p {}
article :--heading + p {}
```
### importFrom
The `importFrom` option specifies sources where custom selectors can be
imported from, which might be CSS, JS, and JSON files, functions, and directly
passed objects.
```js
postcssCustomSelectors({
importFrom: 'path/to/file.css' // => @custom-selector :--heading h1, h2, h3;
});
```
```pcss
article :--heading + p {
margin-top: 0;
}
/* becomes */
article h1 + p, article h2 + p, article h3 + p {}
```
Multiple sources can be passed into this option, and they will be parsed in the
order they are received. JavaScript files, JSON files, functions, and objects
will need to namespace custom selectors using the `customProperties` or
`custom-properties` key.
```js
postcssCustomSelectors({
importFrom: [
'path/to/file.css',
'and/then/this.js',
'and/then/that.json',
{
customSelectors: { ':--heading': 'h1, h2, h3' }
},
() => {
const customProperties = { ':--heading': 'h1, h2, h3' };
return { customProperties };
}
]
});
```
### exportTo
The `exportTo` option specifies destinations where custom selectors can be
exported to, which might be CSS, JS, and JSON files, functions, and directly
passed objects.
```js
postcssCustomSelectors({
exportTo: 'path/to/file.css' // @custom-selector :--heading h1, h2, h3;
});
```
Multiple destinations can be passed into this option, and they will be parsed
in the order they are received. JavaScript files, JSON files, and objects will
need to namespace custom selectors using the `customProperties` or
`custom-properties` key.
```js
const cachedObject = { customSelectors: {} };
postcssCustomSelectors({
exportTo: [
'path/to/file.css', // @custom-selector :--heading h1, h2, h3;
'and/then/this.js', // module.exports = { customSelectors: { ':--heading': 'h1, h2, h3' } }
'and/then/this.mjs', // export const customSelectors = { ':--heading': 'h1, h2, h3' } }
'and/then/that.json', // { "custom-selectors": { ":--heading": "h1, h2, h3" } }
cachedObject,
customProperties => {
customProperties // { ':--heading': 'h1, h2, h3' }
}
]
});
```
[cli-img]: https://img.shields.io/travis/postcss/postcss-custom-selectors.svg
[cli-url]: https://travis-ci.org/postcss/postcss-custom-selectors
[css-img]: https://cssdb.org/badge/custom-selectors.svg
[css-url]: https://cssdb.org/#custom-selectors
[git-img]: https://img.shields.io/badge/support-chat-blue.svg
[git-url]: https://gitter.im/postcss/postcss
[npm-img]: https://img.shields.io/npm/v/postcss-custom-selectors.svg
[npm-url]: https://www.npmjs.com/package/postcss-custom-selectors
[CSS Extensions]: https://drafts.csswg.org/css-extensions/#custom-selectors
[PostCSS]: https://github.com/postcss/postcss
[PostCSS Custom Selectors]: https://github.com/postcss/postcss-custom-selectors

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'use strict';
function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
var parser = _interopDefault(require('postcss-selector-parser'));
var fs = _interopDefault(require('fs'));
var path = _interopDefault(require('path'));
var postcss = _interopDefault(require('postcss'));
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
function _asyncToGenerator(fn) {
return function () {
var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
var gen = fn.apply(self, args);
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
_next(undefined);
});
};
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _objectSpread(target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i] != null ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === 'function') {
ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
return Object.getOwnPropertyDescriptor(source, sym).enumerable;
}));
}
ownKeys.forEach(function (key) {
_defineProperty(target, key, source[key]);
});
}
return target;
}
function _slicedToArray(arr, i) {
return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
}
function _arrayWithHoles(arr) {
if (Array.isArray(arr)) return arr;
}
function _iterableToArrayLimit(arr, i) {
var _arr = [];
var _n = true;
var _d = false;
var _e = undefined;
try {
for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
_arr.push(_s.value);
if (i && _arr.length === i) break;
}
} catch (err) {
_d = true;
_e = err;
} finally {
try {
if (!_n && _i["return"] != null) _i["return"]();
} finally {
if (_d) throw _e;
}
}
return _arr;
}
function _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance");
}
/* Return a Selectors AST from a Selectors String
/* ========================================================================== */
var getSelectorsAstFromSelectorsString = (selectorString => {
let selectorAST;
parser(selectors => {
selectorAST = selectors;
}).processSync(selectorString);
return selectorAST;
});
var getCustomSelectors = ((root, opts) => {
// initialize custom selectors
const customSelectors = {}; // for each custom selector atrule that is a child of the css root
root.nodes.slice().forEach(node => {
if (isCustomSelector(node)) {
// extract the name and selectors from the params of the custom selector
const _node$params$match = node.params.match(customSelectorParamsRegExp),
_node$params$match2 = _slicedToArray(_node$params$match, 3),
name = _node$params$match2[1],
selectors = _node$params$match2[2]; // write the parsed selectors to the custom selector
customSelectors[name] = getSelectorsAstFromSelectorsString(selectors); // conditionally remove the custom selector atrule
if (!Object(opts).preserve) {
node.remove();
}
}
});
return customSelectors;
}); // match the custom selector name
const customSelectorNameRegExp = /^custom-selector$/i; // match the custom selector params
const customSelectorParamsRegExp = /^(:--[A-z][\w-]*)\s+([\W\w]+)\s*$/; // whether the atrule is a custom selector
const isCustomSelector = node => node.type === 'atrule' && customSelectorNameRegExp.test(node.name) && customSelectorParamsRegExp.test(node.params);
// return transformed selectors, replacing custom pseudo selectors with custom selectors
function transformSelectorList(selectorList, customSelectors) {
let index = selectorList.nodes.length - 1;
while (index >= 0) {
const transformedSelectors = transformSelector(selectorList.nodes[index], customSelectors);
if (transformedSelectors.length) {
selectorList.nodes.splice(index, 1, ...transformedSelectors);
}
--index;
}
return selectorList;
} // return custom pseudo selectors replaced with custom selectors
function transformSelector(selector, customSelectors) {
const transpiledSelectors = [];
for (const index in selector.nodes) {
const _selector$nodes$index = selector.nodes[index],
value = _selector$nodes$index.value,
nodes = _selector$nodes$index.nodes;
if (value in customSelectors) {
var _iteratorNormalCompletion = true;
var _didIteratorError = false;
var _iteratorError = undefined;
try {
for (var _iterator = customSelectors[value].nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
const replacementSelector = _step.value;
const selectorClone = selector.clone();
selectorClone.nodes.splice(index, 1, ...replacementSelector.clone().nodes.map(node => {
// use spacing from the current usage
node.spaces = _objectSpread({}, selector.nodes[index].spaces);
return node;
}));
const retranspiledSelectors = transformSelector(selectorClone, customSelectors);
adjustNodesBySelectorEnds(selectorClone.nodes, Number(index));
if (retranspiledSelectors.length) {
transpiledSelectors.push(...retranspiledSelectors);
} else {
transpiledSelectors.push(selectorClone);
}
}
} catch (err) {
_didIteratorError = true;
_iteratorError = err;
} finally {
try {
if (!_iteratorNormalCompletion && _iterator.return != null) {
_iterator.return();
}
} finally {
if (_didIteratorError) {
throw _iteratorError;
}
}
}
return transpiledSelectors;
} else if (nodes && nodes.length) {
transformSelectorList(selector.nodes[index], customSelectors);
}
}
return transpiledSelectors;
} // match selectors by difficult-to-separate ends
const withoutSelectorStartMatch = /^(tag|universal)$/;
const withoutSelectorEndMatch = /^(class|id|pseudo|tag|universal)$/;
const isWithoutSelectorStart = node => withoutSelectorStartMatch.test(Object(node).type);
const isWithoutSelectorEnd = node => withoutSelectorEndMatch.test(Object(node).type); // adjust nodes by selector ends (so that .class:--h1 becomes h1.class rather than .classh1)
const adjustNodesBySelectorEnds = (nodes, index) => {
if (index && isWithoutSelectorStart(nodes[index]) && isWithoutSelectorEnd(nodes[index - 1])) {
let safeIndex = index - 1;
while (safeIndex && isWithoutSelectorEnd(nodes[safeIndex])) {
--safeIndex;
}
if (safeIndex < index) {
const node = nodes.splice(index, 1)[0];
nodes.splice(safeIndex, 0, node);
nodes[safeIndex].spaces.before = nodes[safeIndex + 1].spaces.before;
nodes[safeIndex + 1].spaces.before = '';
if (nodes[index]) {
nodes[index].spaces.after = nodes[safeIndex].spaces.after;
nodes[safeIndex].spaces.after = '';
}
}
}
};
var transformRules = ((root, customSelectors, opts) => {
root.walkRules(customPseudoRegExp, rule => {
const selector = parser(selectors => {
transformSelectorList(selectors, customSelectors, opts);
}).processSync(rule.selector);
if (opts.preserve) {
rule.cloneBefore({
selector
});
} else {
rule.selector = selector;
}
});
});
const customPseudoRegExp = /:--[A-z][\w-]*/;
/* Import Custom Selectors from CSS AST
/* ========================================================================== */
function importCustomSelectorsFromCSSAST(root) {
return getCustomSelectors(root);
}
/* Import Custom Selectors from CSS File
/* ========================================================================== */
function importCustomSelectorsFromCSSFile(_x) {
return _importCustomSelectorsFromCSSFile.apply(this, arguments);
}
/* Import Custom Selectors from Object
/* ========================================================================== */
function _importCustomSelectorsFromCSSFile() {
_importCustomSelectorsFromCSSFile = _asyncToGenerator(function* (from) {
const css = yield readFile(path.resolve(from));
const root = postcss.parse(css, {
from: path.resolve(from)
});
return importCustomSelectorsFromCSSAST(root);
});
return _importCustomSelectorsFromCSSFile.apply(this, arguments);
}
function importCustomSelectorsFromObject(object) {
const customSelectors = Object.assign({}, Object(object).customSelectors || Object(object)['custom-selectors']);
for (const key in customSelectors) {
customSelectors[key] = getSelectorsAstFromSelectorsString(customSelectors[key]);
}
return customSelectors;
}
/* Import Custom Selectors from JSON file
/* ========================================================================== */
function importCustomSelectorsFromJSONFile(_x2) {
return _importCustomSelectorsFromJSONFile.apply(this, arguments);
}
/* Import Custom Selectors from JS file
/* ========================================================================== */
function _importCustomSelectorsFromJSONFile() {
_importCustomSelectorsFromJSONFile = _asyncToGenerator(function* (from) {
const object = yield readJSON(path.resolve(from));
return importCustomSelectorsFromObject(object);
});
return _importCustomSelectorsFromJSONFile.apply(this, arguments);
}
function importCustomSelectorsFromJSFile(_x3) {
return _importCustomSelectorsFromJSFile.apply(this, arguments);
}
/* Import Custom Selectors from Sources
/* ========================================================================== */
function _importCustomSelectorsFromJSFile() {
_importCustomSelectorsFromJSFile = _asyncToGenerator(function* (from) {
const object = yield Promise.resolve(require(path.resolve(from)));
return importCustomSelectorsFromObject(object);
});
return _importCustomSelectorsFromJSFile.apply(this, arguments);
}
function importCustomSelectorsFromSources(sources) {
return sources.map(source => {
if (source instanceof Promise) {
return source;
} else if (source instanceof Function) {
return source();
} // read the source as an object
const opts = source === Object(source) ? source : {
from: String(source)
}; // skip objects with custom selectors
if (Object(opts).customSelectors || Object(opts)['custom-selectors']) {
return opts;
} // source pathname
const from = String(opts.from || ''); // type of file being read from
const type = (opts.type || path.extname(from).slice(1)).toLowerCase();
return {
type,
from
};
}).reduce(
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (customSelectors, source) {
const _ref2 = yield source,
type = _ref2.type,
from = _ref2.from;
if (type === 'ast') {
return Object.assign(customSelectors, importCustomSelectorsFromCSSAST(from));
}
if (type === 'css') {
return Object.assign(customSelectors, (yield importCustomSelectorsFromCSSFile(from)));
}
if (type === 'js') {
return Object.assign(customSelectors, (yield importCustomSelectorsFromJSFile(from)));
}
if (type === 'json') {
return Object.assign(customSelectors, (yield importCustomSelectorsFromJSONFile(from)));
}
return Object.assign(customSelectors, importCustomSelectorsFromObject((yield source)));
});
return function (_x4, _x5) {
return _ref.apply(this, arguments);
};
}(), {});
}
/* Helper utilities
/* ========================================================================== */
const readFile = from => new Promise((resolve, reject) => {
fs.readFile(from, 'utf8', (error, result) => {
if (error) {
reject(error);
} else {
resolve(result);
}
});
});
const readJSON =
/*#__PURE__*/
function () {
var _ref3 = _asyncToGenerator(function* (from) {
return JSON.parse((yield readFile(from)));
});
return function readJSON(_x6) {
return _ref3.apply(this, arguments);
};
}();
/* Import Custom Selectors from CSS File
/* ========================================================================== */
function exportCustomSelectorsToCssFile(_x, _x2) {
return _exportCustomSelectorsToCssFile.apply(this, arguments);
}
/* Import Custom Selectors from JSON file
/* ========================================================================== */
function _exportCustomSelectorsToCssFile() {
_exportCustomSelectorsToCssFile = _asyncToGenerator(function* (to, customSelectors) {
const cssContent = Object.keys(customSelectors).reduce((cssLines, name) => {
cssLines.push(`@custom-selector ${name} ${customSelectors[name]};`);
return cssLines;
}, []).join('\n');
const css = `${cssContent}\n`;
yield writeFile(to, css);
});
return _exportCustomSelectorsToCssFile.apply(this, arguments);
}
function exportCustomSelectorsToJsonFile(_x3, _x4) {
return _exportCustomSelectorsToJsonFile.apply(this, arguments);
}
/* Import Custom Selectors from Common JS file
/* ========================================================================== */
function _exportCustomSelectorsToJsonFile() {
_exportCustomSelectorsToJsonFile = _asyncToGenerator(function* (to, customSelectors) {
const jsonContent = JSON.stringify({
'custom-selectors': customSelectors
}, null, ' ');
const json = `${jsonContent}\n`;
yield writeFile(to, json);
});
return _exportCustomSelectorsToJsonFile.apply(this, arguments);
}
function exportCustomSelectorsToCjsFile(_x5, _x6) {
return _exportCustomSelectorsToCjsFile.apply(this, arguments);
}
/* Import Custom Selectors from Module JS file
/* ========================================================================== */
function _exportCustomSelectorsToCjsFile() {
_exportCustomSelectorsToCjsFile = _asyncToGenerator(function* (to, customSelectors) {
const jsContents = Object.keys(customSelectors).reduce((jsLines, name) => {
jsLines.push(`\t\t'${escapeForJS(name)}': '${escapeForJS(customSelectors[name])}'`);
return jsLines;
}, []).join(',\n');
const js = `module.exports = {\n\tcustomSelectors: {\n${jsContents}\n\t}\n};\n`;
yield writeFile(to, js);
});
return _exportCustomSelectorsToCjsFile.apply(this, arguments);
}
function exportCustomSelectorsToMjsFile(_x7, _x8) {
return _exportCustomSelectorsToMjsFile.apply(this, arguments);
}
/* Export Custom Selectors to Destinations
/* ========================================================================== */
function _exportCustomSelectorsToMjsFile() {
_exportCustomSelectorsToMjsFile = _asyncToGenerator(function* (to, customSelectors) {
const mjsContents = Object.keys(customSelectors).reduce((mjsLines, name) => {
mjsLines.push(`\t'${escapeForJS(name)}': '${escapeForJS(customSelectors[name])}'`);
return mjsLines;
}, []).join(',\n');
const mjs = `export const customSelectors = {\n${mjsContents}\n};\n`;
yield writeFile(to, mjs);
});
return _exportCustomSelectorsToMjsFile.apply(this, arguments);
}
function exportCustomSelectorsToDestinations(customSelectors, destinations) {
return Promise.all(destinations.map(
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (destination) {
if (destination instanceof Function) {
yield destination(defaultCustomSelectorsToJSON(customSelectors));
} else {
// read the destination as an object
const opts = destination === Object(destination) ? destination : {
to: String(destination)
}; // transformer for custom selectors into a JSON-compatible object
const toJSON = opts.toJSON || defaultCustomSelectorsToJSON;
if ('customSelectors' in opts) {
// write directly to an object as customSelectors
opts.customSelectors = toJSON(customSelectors);
} else if ('custom-selectors' in opts) {
// write directly to an object as custom-selectors
opts['custom-selectors'] = toJSON(customSelectors);
} else {
// destination pathname
const to = String(opts.to || ''); // type of file being written to
const type = (opts.type || path.extname(opts.to).slice(1)).toLowerCase(); // transformed custom selectors
const customSelectorsJSON = toJSON(customSelectors);
if (type === 'css') {
yield exportCustomSelectorsToCssFile(to, customSelectorsJSON);
}
if (type === 'js') {
yield exportCustomSelectorsToCjsFile(to, customSelectorsJSON);
}
if (type === 'json') {
yield exportCustomSelectorsToJsonFile(to, customSelectorsJSON);
}
if (type === 'mjs') {
yield exportCustomSelectorsToMjsFile(to, customSelectorsJSON);
}
}
}
});
return function (_x9) {
return _ref.apply(this, arguments);
};
}()));
}
/* Helper utilities
/* ========================================================================== */
const defaultCustomSelectorsToJSON = customSelectors => {
return Object.keys(customSelectors).reduce((customSelectorsJSON, key) => {
customSelectorsJSON[key] = String(customSelectors[key]);
return customSelectorsJSON;
}, {});
};
const writeFile = (to, text) => new Promise((resolve, reject) => {
fs.writeFile(to, text, error => {
if (error) {
reject(error);
} else {
resolve();
}
});
});
const escapeForJS = string => string.replace(/\\([\s\S])|(')/g, '\\$1$2').replace(/\n/g, '\\n').replace(/\r/g, '\\r');
var index = postcss.plugin('postcss-custom-selectors', opts => {
// whether to preserve custom selectors and rules using them
const preserve = Boolean(Object(opts).preserve); // sources to import custom selectors from
const importFrom = [].concat(Object(opts).importFrom || []); // destinations to export custom selectors to
const exportTo = [].concat(Object(opts).exportTo || []); // promise any custom selectors are imported
const customSelectorsPromise = importCustomSelectorsFromSources(importFrom);
return (
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (root) {
const customProperties = Object.assign((yield customSelectorsPromise), getCustomSelectors(root, {
preserve
}));
yield exportCustomSelectorsToDestinations(customProperties, exportTo);
transformRules(root, customProperties, {
preserve
});
});
return function (_x) {
return _ref.apply(this, arguments);
};
}()
);
});
module.exports = index;
//# sourceMappingURL=index.cjs.js.map

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import parser from 'postcss-selector-parser';
import fs from 'fs';
import path from 'path';
import postcss from 'postcss';
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
function _asyncToGenerator(fn) {
return function () {
var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
var gen = fn.apply(self, args);
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
_next(undefined);
});
};
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _objectSpread(target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i] != null ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === 'function') {
ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
return Object.getOwnPropertyDescriptor(source, sym).enumerable;
}));
}
ownKeys.forEach(function (key) {
_defineProperty(target, key, source[key]);
});
}
return target;
}
function _slicedToArray(arr, i) {
return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
}
function _arrayWithHoles(arr) {
if (Array.isArray(arr)) return arr;
}
function _iterableToArrayLimit(arr, i) {
var _arr = [];
var _n = true;
var _d = false;
var _e = undefined;
try {
for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
_arr.push(_s.value);
if (i && _arr.length === i) break;
}
} catch (err) {
_d = true;
_e = err;
} finally {
try {
if (!_n && _i["return"] != null) _i["return"]();
} finally {
if (_d) throw _e;
}
}
return _arr;
}
function _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance");
}
/* Return a Selectors AST from a Selectors String
/* ========================================================================== */
var getSelectorsAstFromSelectorsString = (selectorString => {
let selectorAST;
parser(selectors => {
selectorAST = selectors;
}).processSync(selectorString);
return selectorAST;
});
var getCustomSelectors = ((root, opts) => {
// initialize custom selectors
const customSelectors = {}; // for each custom selector atrule that is a child of the css root
root.nodes.slice().forEach(node => {
if (isCustomSelector(node)) {
// extract the name and selectors from the params of the custom selector
const _node$params$match = node.params.match(customSelectorParamsRegExp),
_node$params$match2 = _slicedToArray(_node$params$match, 3),
name = _node$params$match2[1],
selectors = _node$params$match2[2]; // write the parsed selectors to the custom selector
customSelectors[name] = getSelectorsAstFromSelectorsString(selectors); // conditionally remove the custom selector atrule
if (!Object(opts).preserve) {
node.remove();
}
}
});
return customSelectors;
}); // match the custom selector name
const customSelectorNameRegExp = /^custom-selector$/i; // match the custom selector params
const customSelectorParamsRegExp = /^(:--[A-z][\w-]*)\s+([\W\w]+)\s*$/; // whether the atrule is a custom selector
const isCustomSelector = node => node.type === 'atrule' && customSelectorNameRegExp.test(node.name) && customSelectorParamsRegExp.test(node.params);
// return transformed selectors, replacing custom pseudo selectors with custom selectors
function transformSelectorList(selectorList, customSelectors) {
let index = selectorList.nodes.length - 1;
while (index >= 0) {
const transformedSelectors = transformSelector(selectorList.nodes[index], customSelectors);
if (transformedSelectors.length) {
selectorList.nodes.splice(index, 1, ...transformedSelectors);
}
--index;
}
return selectorList;
} // return custom pseudo selectors replaced with custom selectors
function transformSelector(selector, customSelectors) {
const transpiledSelectors = [];
for (const index in selector.nodes) {
const _selector$nodes$index = selector.nodes[index],
value = _selector$nodes$index.value,
nodes = _selector$nodes$index.nodes;
if (value in customSelectors) {
var _iteratorNormalCompletion = true;
var _didIteratorError = false;
var _iteratorError = undefined;
try {
for (var _iterator = customSelectors[value].nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
const replacementSelector = _step.value;
const selectorClone = selector.clone();
selectorClone.nodes.splice(index, 1, ...replacementSelector.clone().nodes.map(node => {
// use spacing from the current usage
node.spaces = _objectSpread({}, selector.nodes[index].spaces);
return node;
}));
const retranspiledSelectors = transformSelector(selectorClone, customSelectors);
adjustNodesBySelectorEnds(selectorClone.nodes, Number(index));
if (retranspiledSelectors.length) {
transpiledSelectors.push(...retranspiledSelectors);
} else {
transpiledSelectors.push(selectorClone);
}
}
} catch (err) {
_didIteratorError = true;
_iteratorError = err;
} finally {
try {
if (!_iteratorNormalCompletion && _iterator.return != null) {
_iterator.return();
}
} finally {
if (_didIteratorError) {
throw _iteratorError;
}
}
}
return transpiledSelectors;
} else if (nodes && nodes.length) {
transformSelectorList(selector.nodes[index], customSelectors);
}
}
return transpiledSelectors;
} // match selectors by difficult-to-separate ends
const withoutSelectorStartMatch = /^(tag|universal)$/;
const withoutSelectorEndMatch = /^(class|id|pseudo|tag|universal)$/;
const isWithoutSelectorStart = node => withoutSelectorStartMatch.test(Object(node).type);
const isWithoutSelectorEnd = node => withoutSelectorEndMatch.test(Object(node).type); // adjust nodes by selector ends (so that .class:--h1 becomes h1.class rather than .classh1)
const adjustNodesBySelectorEnds = (nodes, index) => {
if (index && isWithoutSelectorStart(nodes[index]) && isWithoutSelectorEnd(nodes[index - 1])) {
let safeIndex = index - 1;
while (safeIndex && isWithoutSelectorEnd(nodes[safeIndex])) {
--safeIndex;
}
if (safeIndex < index) {
const node = nodes.splice(index, 1)[0];
nodes.splice(safeIndex, 0, node);
nodes[safeIndex].spaces.before = nodes[safeIndex + 1].spaces.before;
nodes[safeIndex + 1].spaces.before = '';
if (nodes[index]) {
nodes[index].spaces.after = nodes[safeIndex].spaces.after;
nodes[safeIndex].spaces.after = '';
}
}
}
};
var transformRules = ((root, customSelectors, opts) => {
root.walkRules(customPseudoRegExp, rule => {
const selector = parser(selectors => {
transformSelectorList(selectors, customSelectors, opts);
}).processSync(rule.selector);
if (opts.preserve) {
rule.cloneBefore({
selector
});
} else {
rule.selector = selector;
}
});
});
const customPseudoRegExp = /:--[A-z][\w-]*/;
/* Import Custom Selectors from CSS AST
/* ========================================================================== */
function importCustomSelectorsFromCSSAST(root) {
return getCustomSelectors(root);
}
/* Import Custom Selectors from CSS File
/* ========================================================================== */
function importCustomSelectorsFromCSSFile(_x) {
return _importCustomSelectorsFromCSSFile.apply(this, arguments);
}
/* Import Custom Selectors from Object
/* ========================================================================== */
function _importCustomSelectorsFromCSSFile() {
_importCustomSelectorsFromCSSFile = _asyncToGenerator(function* (from) {
const css = yield readFile(path.resolve(from));
const root = postcss.parse(css, {
from: path.resolve(from)
});
return importCustomSelectorsFromCSSAST(root);
});
return _importCustomSelectorsFromCSSFile.apply(this, arguments);
}
function importCustomSelectorsFromObject(object) {
const customSelectors = Object.assign({}, Object(object).customSelectors || Object(object)['custom-selectors']);
for (const key in customSelectors) {
customSelectors[key] = getSelectorsAstFromSelectorsString(customSelectors[key]);
}
return customSelectors;
}
/* Import Custom Selectors from JSON file
/* ========================================================================== */
function importCustomSelectorsFromJSONFile(_x2) {
return _importCustomSelectorsFromJSONFile.apply(this, arguments);
}
/* Import Custom Selectors from JS file
/* ========================================================================== */
function _importCustomSelectorsFromJSONFile() {
_importCustomSelectorsFromJSONFile = _asyncToGenerator(function* (from) {
const object = yield readJSON(path.resolve(from));
return importCustomSelectorsFromObject(object);
});
return _importCustomSelectorsFromJSONFile.apply(this, arguments);
}
function importCustomSelectorsFromJSFile(_x3) {
return _importCustomSelectorsFromJSFile.apply(this, arguments);
}
/* Import Custom Selectors from Sources
/* ========================================================================== */
function _importCustomSelectorsFromJSFile() {
_importCustomSelectorsFromJSFile = _asyncToGenerator(function* (from) {
const object = yield import(path.resolve(from));
return importCustomSelectorsFromObject(object);
});
return _importCustomSelectorsFromJSFile.apply(this, arguments);
}
function importCustomSelectorsFromSources(sources) {
return sources.map(source => {
if (source instanceof Promise) {
return source;
} else if (source instanceof Function) {
return source();
} // read the source as an object
const opts = source === Object(source) ? source : {
from: String(source)
}; // skip objects with custom selectors
if (Object(opts).customSelectors || Object(opts)['custom-selectors']) {
return opts;
} // source pathname
const from = String(opts.from || ''); // type of file being read from
const type = (opts.type || path.extname(from).slice(1)).toLowerCase();
return {
type,
from
};
}).reduce(
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (customSelectors, source) {
const _ref2 = yield source,
type = _ref2.type,
from = _ref2.from;
if (type === 'ast') {
return Object.assign(customSelectors, importCustomSelectorsFromCSSAST(from));
}
if (type === 'css') {
return Object.assign(customSelectors, (yield importCustomSelectorsFromCSSFile(from)));
}
if (type === 'js') {
return Object.assign(customSelectors, (yield importCustomSelectorsFromJSFile(from)));
}
if (type === 'json') {
return Object.assign(customSelectors, (yield importCustomSelectorsFromJSONFile(from)));
}
return Object.assign(customSelectors, importCustomSelectorsFromObject((yield source)));
});
return function (_x4, _x5) {
return _ref.apply(this, arguments);
};
}(), {});
}
/* Helper utilities
/* ========================================================================== */
const readFile = from => new Promise((resolve, reject) => {
fs.readFile(from, 'utf8', (error, result) => {
if (error) {
reject(error);
} else {
resolve(result);
}
});
});
const readJSON =
/*#__PURE__*/
function () {
var _ref3 = _asyncToGenerator(function* (from) {
return JSON.parse((yield readFile(from)));
});
return function readJSON(_x6) {
return _ref3.apply(this, arguments);
};
}();
/* Import Custom Selectors from CSS File
/* ========================================================================== */
function exportCustomSelectorsToCssFile(_x, _x2) {
return _exportCustomSelectorsToCssFile.apply(this, arguments);
}
/* Import Custom Selectors from JSON file
/* ========================================================================== */
function _exportCustomSelectorsToCssFile() {
_exportCustomSelectorsToCssFile = _asyncToGenerator(function* (to, customSelectors) {
const cssContent = Object.keys(customSelectors).reduce((cssLines, name) => {
cssLines.push(`@custom-selector ${name} ${customSelectors[name]};`);
return cssLines;
}, []).join('\n');
const css = `${cssContent}\n`;
yield writeFile(to, css);
});
return _exportCustomSelectorsToCssFile.apply(this, arguments);
}
function exportCustomSelectorsToJsonFile(_x3, _x4) {
return _exportCustomSelectorsToJsonFile.apply(this, arguments);
}
/* Import Custom Selectors from Common JS file
/* ========================================================================== */
function _exportCustomSelectorsToJsonFile() {
_exportCustomSelectorsToJsonFile = _asyncToGenerator(function* (to, customSelectors) {
const jsonContent = JSON.stringify({
'custom-selectors': customSelectors
}, null, ' ');
const json = `${jsonContent}\n`;
yield writeFile(to, json);
});
return _exportCustomSelectorsToJsonFile.apply(this, arguments);
}
function exportCustomSelectorsToCjsFile(_x5, _x6) {
return _exportCustomSelectorsToCjsFile.apply(this, arguments);
}
/* Import Custom Selectors from Module JS file
/* ========================================================================== */
function _exportCustomSelectorsToCjsFile() {
_exportCustomSelectorsToCjsFile = _asyncToGenerator(function* (to, customSelectors) {
const jsContents = Object.keys(customSelectors).reduce((jsLines, name) => {
jsLines.push(`\t\t'${escapeForJS(name)}': '${escapeForJS(customSelectors[name])}'`);
return jsLines;
}, []).join(',\n');
const js = `module.exports = {\n\tcustomSelectors: {\n${jsContents}\n\t}\n};\n`;
yield writeFile(to, js);
});
return _exportCustomSelectorsToCjsFile.apply(this, arguments);
}
function exportCustomSelectorsToMjsFile(_x7, _x8) {
return _exportCustomSelectorsToMjsFile.apply(this, arguments);
}
/* Export Custom Selectors to Destinations
/* ========================================================================== */
function _exportCustomSelectorsToMjsFile() {
_exportCustomSelectorsToMjsFile = _asyncToGenerator(function* (to, customSelectors) {
const mjsContents = Object.keys(customSelectors).reduce((mjsLines, name) => {
mjsLines.push(`\t'${escapeForJS(name)}': '${escapeForJS(customSelectors[name])}'`);
return mjsLines;
}, []).join(',\n');
const mjs = `export const customSelectors = {\n${mjsContents}\n};\n`;
yield writeFile(to, mjs);
});
return _exportCustomSelectorsToMjsFile.apply(this, arguments);
}
function exportCustomSelectorsToDestinations(customSelectors, destinations) {
return Promise.all(destinations.map(
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (destination) {
if (destination instanceof Function) {
yield destination(defaultCustomSelectorsToJSON(customSelectors));
} else {
// read the destination as an object
const opts = destination === Object(destination) ? destination : {
to: String(destination)
}; // transformer for custom selectors into a JSON-compatible object
const toJSON = opts.toJSON || defaultCustomSelectorsToJSON;
if ('customSelectors' in opts) {
// write directly to an object as customSelectors
opts.customSelectors = toJSON(customSelectors);
} else if ('custom-selectors' in opts) {
// write directly to an object as custom-selectors
opts['custom-selectors'] = toJSON(customSelectors);
} else {
// destination pathname
const to = String(opts.to || ''); // type of file being written to
const type = (opts.type || path.extname(opts.to).slice(1)).toLowerCase(); // transformed custom selectors
const customSelectorsJSON = toJSON(customSelectors);
if (type === 'css') {
yield exportCustomSelectorsToCssFile(to, customSelectorsJSON);
}
if (type === 'js') {
yield exportCustomSelectorsToCjsFile(to, customSelectorsJSON);
}
if (type === 'json') {
yield exportCustomSelectorsToJsonFile(to, customSelectorsJSON);
}
if (type === 'mjs') {
yield exportCustomSelectorsToMjsFile(to, customSelectorsJSON);
}
}
}
});
return function (_x9) {
return _ref.apply(this, arguments);
};
}()));
}
/* Helper utilities
/* ========================================================================== */
const defaultCustomSelectorsToJSON = customSelectors => {
return Object.keys(customSelectors).reduce((customSelectorsJSON, key) => {
customSelectorsJSON[key] = String(customSelectors[key]);
return customSelectorsJSON;
}, {});
};
const writeFile = (to, text) => new Promise((resolve, reject) => {
fs.writeFile(to, text, error => {
if (error) {
reject(error);
} else {
resolve();
}
});
});
const escapeForJS = string => string.replace(/\\([\s\S])|(')/g, '\\$1$2').replace(/\n/g, '\\n').replace(/\r/g, '\\r');
var index = postcss.plugin('postcss-custom-selectors', opts => {
// whether to preserve custom selectors and rules using them
const preserve = Boolean(Object(opts).preserve); // sources to import custom selectors from
const importFrom = [].concat(Object(opts).importFrom || []); // destinations to export custom selectors to
const exportTo = [].concat(Object(opts).exportTo || []); // promise any custom selectors are imported
const customSelectorsPromise = importCustomSelectorsFromSources(importFrom);
return (
/*#__PURE__*/
function () {
var _ref = _asyncToGenerator(function* (root) {
const customProperties = Object.assign((yield customSelectorsPromise), getCustomSelectors(root, {
preserve
}));
yield exportCustomSelectorsToDestinations(customProperties, exportTo);
transformRules(root, customProperties, {
preserve
});
});
return function (_x) {
return _ref.apply(this, arguments);
};
}()
);
});
export default index;
//# sourceMappingURL=index.es.mjs.map

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../cssesc/bin/cssesc

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Copyright Mathias Bynens <https://mathiasbynens.be/>
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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# cssesc [![Build status](https://travis-ci.org/mathiasbynens/cssesc.svg?branch=master)](https://travis-ci.org/mathiasbynens/cssesc) [![Code coverage status](https://img.shields.io/codecov/c/github/mathiasbynens/cssesc.svg)](https://codecov.io/gh/mathiasbynens/cssesc)
A JavaScript library for escaping CSS strings and identifiers while generating the shortest possible ASCII-only output.
This is a JavaScript library for [escaping text for use in CSS strings or identifiers](https://mathiasbynens.be/notes/css-escapes) while generating the shortest possible valid ASCII-only output. [Here’s an online demo.](https://mothereff.in/css-escapes)
[A polyfill for the CSSOM `CSS.escape()` method is available in a separate repository.](https://mths.be/cssescape) (In comparison, _cssesc_ is much more powerful.)
Feel free to fork if you see possible improvements!
## Installation
Via [npm](https://www.npmjs.com/):
```bash
npm install cssesc
```
In a browser:
```html
<script src="cssesc.js"></script>
```
In [Node.js](https://nodejs.org/):
```js
const cssesc = require('cssesc');
```
In Ruby using [the `ruby-cssesc` wrapper gem](https://github.com/borodean/ruby-cssesc):
```bash
gem install ruby-cssesc
```
```ruby
require 'ruby-cssesc'
CSSEsc.escape('I ♥ Ruby', is_identifier: true)
```
In Sass using [`sassy-escape`](https://github.com/borodean/sassy-escape):
```bash
gem install sassy-escape
```
```scss
body {
content: escape('I ♥ Sass', $is-identifier: true);
}
```
## API
### `cssesc(value, options)`
This function takes a value and returns an escaped version of the value where any characters that are not printable ASCII symbols are escaped using the shortest possible (but valid) [escape sequences for use in CSS strings or identifiers](https://mathiasbynens.be/notes/css-escapes).
```js
cssesc('Ich ♥ Bücher');
// → 'Ich \\2665 B\\FC cher'
cssesc('foo 𝌆 bar');
// → 'foo \\1D306 bar'
```
By default, `cssesc` returns a string that can be used as part of a CSS string. If the target is a CSS identifier rather than a CSS string, use the `isIdentifier: true` setting (see below).
The optional `options` argument accepts an object with the following options:
#### `isIdentifier`
The default value for the `isIdentifier` option is `false`. This means that the input text will be escaped for use in a CSS string literal. If you want to use the result as a CSS identifier instead (in a selector, for example), set this option to `true`.
```js
cssesc('123a2b');
// → '123a2b'
cssesc('123a2b', {
'isIdentifier': true
});
// → '\\31 23a2b'
```
#### `quotes`
The default value for the `quotes` option is `'single'`. This means that any occurences of `'` in the input text will be escaped as `\'`, so that the output can be used in a CSS string literal wrapped in single quotes.
```js
cssesc('Lorem ipsum "dolor" sit \'amet\' etc.');
// → 'Lorem ipsum "dolor" sit \\\'amet\\\' etc.'
// → "Lorem ipsum \"dolor\" sit \\'amet\\' etc."
cssesc('Lorem ipsum "dolor" sit \'amet\' etc.', {
'quotes': 'single'
});
// → 'Lorem ipsum "dolor" sit \\\'amet\\\' etc.'
// → "Lorem ipsum \"dolor\" sit \\'amet\\' etc."
```
If you want to use the output as part of a CSS string literal wrapped in double quotes, set the `quotes` option to `'double'`.
```js
cssesc('Lorem ipsum "dolor" sit \'amet\' etc.', {
'quotes': 'double'
});
// → 'Lorem ipsum \\"dolor\\" sit \'amet\' etc.'
// → "Lorem ipsum \\\"dolor\\\" sit 'amet' etc."
```
#### `wrap`
The `wrap` option takes a boolean value (`true` or `false`), and defaults to `false` (disabled). When enabled, the output will be a valid CSS string literal wrapped in quotes. The type of quotes can be specified through the `quotes` setting.
```js
cssesc('Lorem ipsum "dolor" sit \'amet\' etc.', {
'quotes': 'single',
'wrap': true
});
// → '\'Lorem ipsum "dolor" sit \\\'amet\\\' etc.\''
// → "\'Lorem ipsum \"dolor\" sit \\\'amet\\\' etc.\'"
cssesc('Lorem ipsum "dolor" sit \'amet\' etc.', {
'quotes': 'double',
'wrap': true
});
// → '"Lorem ipsum \\"dolor\\" sit \'amet\' etc."'
// → "\"Lorem ipsum \\\"dolor\\\" sit \'amet\' etc.\""
```
#### `escapeEverything`
The `escapeEverything` option takes a boolean value (`true` or `false`), and defaults to `false` (disabled). When enabled, all the symbols in the output will be escaped, even printable ASCII symbols.
```js
cssesc('lolwat"foo\'bar', {
'escapeEverything': true
});
// → '\\6C\\6F\\6C\\77\\61\\74\\"\\66\\6F\\6F\\\'\\62\\61\\72'
// → "\\6C\\6F\\6C\\77\\61\\74\\\"\\66\\6F\\6F\\'\\62\\61\\72"
```
#### Overriding the default options globally
The global default settings can be overridden by modifying the `css.options` object. This saves you from passing in an `options` object for every call to `encode` if you want to use the non-default setting.
```js
// Read the global default setting for `escapeEverything`:
cssesc.options.escapeEverything;
// → `false` by default
// Override the global default setting for `escapeEverything`:
cssesc.options.escapeEverything = true;
// Using the global default setting for `escapeEverything`, which is now `true`:
cssesc('foo © bar ≠ baz 𝌆 qux');
// → '\\66\\6F\\6F\\ \\A9\\ \\62\\61\\72\\ \\2260\\ \\62\\61\\7A\\ \\1D306\\ \\71\\75\\78'
```
### `cssesc.version`
A string representing the semantic version number.
### Using the `cssesc` binary
To use the `cssesc` binary in your shell, simply install cssesc globally using npm:
```bash
npm install -g cssesc
```
After that you will be able to escape text for use in CSS strings or identifiers from the command line:
```bash
$ cssesc 'föo ♥ bår 𝌆 baz'
f\F6o \2665 b\E5r \1D306 baz
```
If the output needs to be a CSS identifier rather than part of a string literal, use the `-i`/`--identifier` option:
```bash
$ cssesc --identifier 'föo ♥ bår 𝌆 baz'
f\F6o\ \2665\ b\E5r\ \1D306\ baz
```
See `cssesc --help` for the full list of options.
## Support
This library supports the Node.js and browser versions mentioned in [`.babelrc`](https://github.com/mathiasbynens/cssesc/blob/master/.babelrc). For a version that supports a wider variety of legacy browsers and environments out-of-the-box, [see v0.1.0](https://github.com/mathiasbynens/cssesc/releases/tag/v0.1.0).
## Author
| [![twitter/mathias](https://gravatar.com/avatar/24e08a9ea84deb17ae121074d0f17125?s=70)](https://twitter.com/mathias "Follow @mathias on Twitter") |
|---|
| [Mathias Bynens](https://mathiasbynens.be/) |
## License
This library is available under the [MIT](https://mths.be/mit) license.

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/*! https://mths.be/cssesc v1.0.1 by @mathias */
'use strict';
var object = {};
var hasOwnProperty = object.hasOwnProperty;
var merge = function merge(options, defaults) {
if (!options) {
return defaults;
}
var result = {};
for (var key in defaults) {
// `if (defaults.hasOwnProperty(key) { … }` is not needed here, since
// only recognized option names are used.
result[key] = hasOwnProperty.call(options, key) ? options[key] : defaults[key];
}
return result;
};
var regexAnySingleEscape = /[ -,\.\/;-@\[-\^`\{-~]/;
var regexSingleEscape = /[ -,\.\/;-@\[\]\^`\{-~]/;
var regexAlwaysEscape = /['"\\]/;
var regexExcessiveSpaces = /(^|\\+)?(\\[A-F0-9]{1,6})\x20(?![a-fA-F0-9\x20])/g;
// https://mathiasbynens.be/notes/css-escapes#css
var cssesc = function cssesc(string, options) {
options = merge(options, cssesc.options);
if (options.quotes != 'single' && options.quotes != 'double') {
options.quotes = 'single';
}
var quote = options.quotes == 'double' ? '"' : '\'';
var isIdentifier = options.isIdentifier;
var firstChar = string.charAt(0);
var output = '';
var counter = 0;
var length = string.length;
while (counter < length) {
var character = string.charAt(counter++);
var codePoint = character.charCodeAt();
var value = void 0;
// If it’s not a printable ASCII character…
if (codePoint < 0x20 || codePoint > 0x7E) {
if (codePoint >= 0xD800 && codePoint <= 0xDBFF && counter < length) {
// It’s a high surrogate, and there is a next character.
var extra = string.charCodeAt(counter++);
if ((extra & 0xFC00) == 0xDC00) {
// next character is low surrogate
codePoint = ((codePoint & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000;
} else {
// It’s an unmatched surrogate; only append this code unit, in case
// the next code unit is the high surrogate of a surrogate pair.
counter--;
}
}
value = '\\' + codePoint.toString(16).toUpperCase() + ' ';
} else {
if (options.escapeEverything) {
if (regexAnySingleEscape.test(character)) {
value = '\\' + character;
} else {
value = '\\' + codePoint.toString(16).toUpperCase() + ' ';
}
// Note: `:` could be escaped as `\:`, but that fails in IE < 8.
} else if (/[\t\n\f\r\x0B:]/.test(character)) {
if (!isIdentifier && character == ':') {
value = character;
} else {
value = '\\' + codePoint.toString(16).toUpperCase() + ' ';
}
} else if (character == '\\' || !isIdentifier && (character == '"' && quote == character || character == '\'' && quote == character) || isIdentifier && regexSingleEscape.test(character)) {
value = '\\' + character;
} else {
value = character;
}
}
output += value;
}
if (isIdentifier) {
if (/^_/.test(output)) {
// Prevent IE6 from ignoring the rule altogether (in case this is for an
// identifier used as a selector)
output = '\\_' + output.slice(1);
} else if (/^-[-\d]/.test(output)) {
output = '\\-' + output.slice(1);
} else if (/\d/.test(firstChar)) {
output = '\\3' + firstChar + ' ' + output.slice(1);
}
}
// Remove spaces after `\HEX` escapes that are not followed by a hex digit,
// since they’re redundant. Note that this is only possible if the escape
// sequence isn’t preceded by an odd number of backslashes.
output = output.replace(regexExcessiveSpaces, function ($0, $1, $2) {
if ($1 && $1.length % 2) {
// It’s not safe to remove the space, so don’t.
return $0;
}
// Strip the space.
return ($1 || '') + $2;
});
if (!isIdentifier && options.wrap) {
return quote + output + quote;
}
return output;
};
// Expose default options (so they can be overridden globally).
cssesc.options = {
'escapeEverything': false,
'isIdentifier': false,
'quotes': 'single',
'wrap': false
};
cssesc.version = '1.0.1';
module.exports = cssesc;

70
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.Dd August 9, 2013
.Dt cssesc 1
.Sh NAME
.Nm cssesc
.Nd escape text for use in CSS string literals or identifiers
.Sh SYNOPSIS
.Nm
.Op Fl i | -identifier Ar string
.br
.Op Fl s | -single-quotes Ar string
.br
.Op Fl d | -double-quotes Ar string
.br
.Op Fl w | -wrap Ar string
.br
.Op Fl e | -escape-everything Ar string
.br
.Op Fl v | -version
.br
.Op Fl h | -help
.Sh DESCRIPTION
.Nm
escapes strings for use in CSS string literals or identifiers while generating the shortest possible valid ASCII-only output.
.Sh OPTIONS
.Bl -ohang -offset
.It Sy "-s, --single-quotes"
Escape any occurences of ' in the input string as \\', so that the output can be used in a CSS string literal wrapped in single quotes.
.It Sy "-d, --double-quotes"
Escape any occurences of " in the input string as \\", so that the output can be used in a CSS string literal wrapped in double quotes.
.It Sy "-w, --wrap"
Make sure the output is a valid CSS string literal wrapped in quotes. The type of quotes can be specified using the
.Ar -s | --single-quotes
or
.Ar -d | --double-quotes
settings.
.It Sy "-e, --escape-everything"
Escape all the symbols in the output, even printable ASCII symbols.
.It Sy "-v, --version"
Print cssesc's version.
.It Sy "-h, --help"
Show the help screen.
.El
.Sh EXIT STATUS
The
.Nm cssesc
utility exits with one of the following values:
.Pp
.Bl -tag -width flag -compact
.It Li 0
.Nm
successfully escaped the given text and printed the result.
.It Li 1
.Nm
wasn't instructed to escape anything (for example, the
.Ar --help
flag was set); or, an error occurred.
.El
.Sh EXAMPLES
.Bl -ohang -offset
.It Sy "cssesc 'foo bar baz'"
Print an escaped version of the given text.
.It Sy echo\ 'foo bar baz'\ |\ cssesc
Print an escaped version of the text that gets piped in.
.El
.Sh BUGS
cssesc's bug tracker is located at <https://github.com/mathiasbynens/cssesc/issues>.
.Sh AUTHOR
Mathias Bynens <https://mathiasbynens.be/>
.Sh WWW
<https://mths.be/cssesc>

51
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@@ -0,0 +1,51 @@
{
"name": "cssesc",
"version": "2.0.0",
"description": "A JavaScript library for escaping CSS strings and identifiers while generating the shortest possible ASCII-only output.",
"homepage": "https://mths.be/cssesc",
"engines": {
"node": ">=4"
},
"main": "cssesc.js",
"bin": "bin/cssesc",
"man": "man/cssesc.1",
"keywords": [
"css",
"escape",
"identifier",
"string",
"tool"
],
"license": "MIT",
"author": {
"name": "Mathias Bynens",
"url": "https://mathiasbynens.be/"
},
"repository": {
"type": "git",
"url": "https://github.com/mathiasbynens/cssesc.git"
},
"bugs": "https://github.com/mathiasbynens/cssesc/issues",
"files": [
"LICENSE-MIT.txt",
"cssesc.js",
"bin/",
"man/"
],
"scripts": {
"build": "grunt template && babel cssesc.js -o cssesc.js",
"test": "mocha tests",
"cover": "istanbul cover --report html node_modules/.bin/_mocha tests -- -u exports -R spec"
},
"devDependencies": {
"babel-cli": "^6.26.0",
"babel-preset-env": "^1.6.1",
"codecov": "^1.0.1",
"grunt": "^1.0.1",
"grunt-template": "^1.0.0",
"istanbul": "^0.4.4",
"mocha": "^2.5.3",
"regenerate": "^1.2.1",
"requirejs": "^2.1.16"
}
}

15
backend/frontend/node_modules/postcss-custom-selectors/node_modules/picocolors/LICENSE generated vendored Normal file
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@@ -0,0 +1,15 @@
ISC License
Copyright (c) 2021 Alexey Raspopov, Kostiantyn Denysov, Anton Verinov
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

23
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@@ -0,0 +1,23 @@
# picocolors
npm install picocolors
A tinier and faster alternative to [nanocolors](https://github.com/ai/nanocolors). Andrey, are you even trying?
```javascript
import pc from "picocolors";
console.log(pc.green(`How are ${pc.italic(`you`)} doing?`));
```
- Up to [2x faster and 2x smaller](#benchmarks) than alternatives
- 3x faster and 10x smaller than `chalk`
- [TypeScript](https://www.typescriptlang.org/) support
- [`NO_COLOR`](https://no-color.org/) friendly
- Node.js v6+ & browsers support
- The same API, but faster, much faster
- No `String.prototype` modifications (anyone still doing it?)
- No dependencies and the smallest `node_modules` footprint
## Docs
Read **[full docs](https://github.com/alexeyraspopov/picocolors#readme)** on GitHub.

25
backend/frontend/node_modules/postcss-custom-selectors/node_modules/picocolors/package.json generated vendored Normal file
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@@ -0,0 +1,25 @@
{
"name": "picocolors",
"version": "0.2.1",
"main": "./picocolors.js",
"types": "./picocolors.d.ts",
"browser": {
"./picocolors.js": "./picocolors.browser.js"
},
"sideEffects": false,
"description": "The tiniest and the fastest coloring library ever",
"files": [
"picocolors.*",
"types.ts"
],
"keywords": [
"terminal",
"colors",
"formatting",
"cli",
"console"
],
"author": "Alexey Raspopov",
"repository": "alexeyraspopov/picocolors",
"license": "ISC"
}

4
backend/frontend/node_modules/postcss-custom-selectors/node_modules/picocolors/picocolors.browser.js generated vendored Normal file
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@@ -0,0 +1,4 @@
var x=String;
var create=function() {return {isColorSupported:false,reset:x,bold:x,dim:x,italic:x,underline:x,inverse:x,hidden:x,strikethrough:x,black:x,red:x,green:x,yellow:x,blue:x,magenta:x,cyan:x,white:x,gray:x,bgBlack:x,bgRed:x,bgGreen:x,bgYellow:x,bgBlue:x,bgMagenta:x,bgCyan:x,bgWhite:x}};
module.exports=create();
module.exports.createColors = create;

5
backend/frontend/node_modules/postcss-custom-selectors/node_modules/picocolors/picocolors.d.ts generated vendored Normal file
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@@ -0,0 +1,5 @@
import { Colors } from "./types"
declare const picocolors: Colors & { createColors: (enabled: boolean) => Colors }
export = picocolors

60
backend/frontend/node_modules/postcss-custom-selectors/node_modules/picocolors/picocolors.js generated vendored Normal file
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@@ -0,0 +1,60 @@
let tty = require("tty")
let isColorSupported =
!("NO_COLOR" in process.env || process.argv.includes("--no-color")) &&
("FORCE_COLOR" in process.env ||
process.argv.includes("--color") ||
process.platform === "win32" ||
(tty.isatty(1) && process.env.TERM !== "dumb") ||
"CI" in process.env)
function formatter(open, close, replace = open) {
return (input) => {
let string = "" + input
let index = string.indexOf(close, open.length)
return !~index
? open + string + close
: open + replaceClose(string, close, replace, index) + close
}
}
function replaceClose(string, close, replace, index) {
let start = string.substring(0, index) + replace
let end = string.substring(index + close.length)
let nextIndex = end.indexOf(close)
return !~nextIndex ? start + end : start + replaceClose(end, close, replace, nextIndex)
}
function createColors(enabled = isColorSupported) {
return {
isColorSupported: enabled,
reset: enabled ? (s) => `\x1b[0m${s}\x1b[0m` : String,
bold: enabled ? formatter("\x1b[1m", "\x1b[22m", "\x1b[22m\x1b[1m") : String,
dim: enabled ? formatter("\x1b[2m", "\x1b[22m", "\x1b[22m\x1b[2m") : String,
italic: enabled ? formatter("\x1b[3m", "\x1b[23m") : String,
underline: enabled ? formatter("\x1b[4m", "\x1b[24m") : String,
inverse: enabled ? formatter("\x1b[7m", "\x1b[27m") : String,
hidden: enabled ? formatter("\x1b[8m", "\x1b[28m") : String,
strikethrough: enabled ? formatter("\x1b[9m", "\x1b[29m") : String,
black: enabled ? formatter("\x1b[30m", "\x1b[39m") : String,
red: enabled ? formatter("\x1b[31m", "\x1b[39m") : String,
green: enabled ? formatter("\x1b[32m", "\x1b[39m") : String,
yellow: enabled ? formatter("\x1b[33m", "\x1b[39m") : String,
blue: enabled ? formatter("\x1b[34m", "\x1b[39m") : String,
magenta: enabled ? formatter("\x1b[35m", "\x1b[39m") : String,
cyan: enabled ? formatter("\x1b[36m", "\x1b[39m") : String,
white: enabled ? formatter("\x1b[37m", "\x1b[39m") : String,
gray: enabled ? formatter("\x1b[90m", "\x1b[39m") : String,
bgBlack: enabled ? formatter("\x1b[40m", "\x1b[49m") : String,
bgRed: enabled ? formatter("\x1b[41m", "\x1b[49m") : String,
bgGreen: enabled ? formatter("\x1b[42m", "\x1b[49m") : String,
bgYellow: enabled ? formatter("\x1b[43m", "\x1b[49m") : String,
bgBlue: enabled ? formatter("\x1b[44m", "\x1b[49m") : String,
bgMagenta: enabled ? formatter("\x1b[45m", "\x1b[49m") : String,
bgCyan: enabled ? formatter("\x1b[46m", "\x1b[49m") : String,
bgWhite: enabled ? formatter("\x1b[47m", "\x1b[49m") : String,
}
}
module.exports = createColors()
module.exports.createColors = createColors

30
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export type Formatter = (input: string | number | null | undefined) => string
export interface Colors {
isColorSupported: boolean
reset: Formatter
bold: Formatter
dim: Formatter
italic: Formatter
underline: Formatter
inverse: Formatter
hidden: Formatter
strikethrough: Formatter
black: Formatter
red: Formatter
green: Formatter
yellow: Formatter
blue: Formatter
magenta: Formatter
cyan: Formatter
white: Formatter
gray: Formatter
bgBlack: Formatter
bgRed: Formatter
bgGreen: Formatter
bgYellow: Formatter
bgBlue: Formatter
bgMagenta: Formatter
bgCyan: Formatter
bgWhite: Formatter
}

873
backend/frontend/node_modules/postcss-custom-selectors/node_modules/postcss-selector-parser/API.md generated vendored Normal file
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# API Documentation
*Please use only this documented API when working with the parser. Methods
not documented here are subject to change at any point.*
## `parser` function
This is the module's main entry point.
```js
const parser = require('postcss-selector-parser');
```
### `parser([transform], [options])`
Creates a new `processor` instance
```js
const processor = parser();
```
Or, with optional transform function
```js
const transform = selectors => {
selectors.walkUniversals(selector => {
selector.remove();
});
};
const processor = parser(transform)
// Example
const result = processor.processSync('*.class');
// => .class
```
[See processor documentation](#processor)
Arguments:
* `transform (function)`: Provide a function to work with the parsed AST.
* `options (object)`: Provide default options for all calls on the returned `Processor`.
### `parser.attribute([props])`
Creates a new attribute selector.
```js
parser.attribute({attribute: 'href'});
// => [href]
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.className([props])`
Creates a new class selector.
```js
parser.className({value: 'button'});
// => .button
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.combinator([props])`
Creates a new selector combinator.
```js
parser.combinator({value: '+'});
// => +
```
Arguments:
* `props (object)`: The new node's properties.
Notes:
* **Descendant Combinators** The value of descendant combinators created by the
parser always just a single space (`" "`). For descendant selectors with no
comments, additional space is now stored in `node.spaces.before`. Depending
on the location of comments, additional spaces may be stored in
`node.raws.spaces.before`, `node.raws.spaces.after`, or `node.raws.value`.
* **Named Combinators** Although, nonstandard and unlikely to ever become a standard,
named combinators like `/deep/` and `/for/` are parsed as combinators. The
`node.value` is name after being unescaped and normalized as lowercase. The
original value for the combinator name is stored in `node.raws.value`.
### `parser.comment([props])`
Creates a new comment.
```js
parser.comment({value: '/* Affirmative, Dave. I read you. */'});
// => /* Affirmative, Dave. I read you. */
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.id([props])`
Creates a new id selector.
```js
parser.id({value: 'search'});
// => #search
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.nesting([props])`
Creates a new nesting selector.
```js
parser.nesting();
// => &
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.pseudo([props])`
Creates a new pseudo selector.
```js
parser.pseudo({value: '::before'});
// => ::before
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.root([props])`
Creates a new root node.
```js
parser.root();
// => (empty)
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.selector([props])`
Creates a new selector node.
```js
parser.selector();
// => (empty)
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.string([props])`
Creates a new string node.
```js
parser.string();
// => (empty)
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.tag([props])`
Creates a new tag selector.
```js
parser.tag({value: 'button'});
// => button
```
Arguments:
* `props (object)`: The new node's properties.
### `parser.universal([props])`
Creates a new universal selector.
```js
parser.universal();
// => *
```
Arguments:
* `props (object)`: The new node's properties.
## Node types
### `node.type`
A string representation of the selector type. It can be one of the following;
`attribute`, `class`, `combinator`, `comment`, `id`, `nesting`, `pseudo`,
`root`, `selector`, `string`, `tag`, or `universal`. Note that for convenience,
these constants are exposed on the main `parser` as uppercased keys. So for
example you can get `id` by querying `parser.ID`.
```js
parser.attribute({attribute: 'href'}).type;
// => 'attribute'
```
### `node.parent`
Returns the parent node.
```js
root.nodes[0].parent === root;
```
### `node.toString()`, `String(node)`, or `'' + node`
Returns a string representation of the node.
```js
const id = parser.id({value: 'search'});
console.log(String(id));
// => #search
```
### `node.next()` & `node.prev()`
Returns the next/previous child of the parent node.
```js
const next = id.next();
if (next && next.type !== 'combinator') {
throw new Error('Qualified IDs are not allowed!');
}
```
### `node.replaceWith(node)`
Replace a node with another.
```js
const attr = selectors.first.first;
const className = parser.className({value: 'test'});
attr.replaceWith(className);
```
Arguments:
* `node`: The node to substitute the original with.
### `node.remove()`
Removes the node from its parent node.
```js
if (node.type === 'id') {
node.remove();
}
```
### `node.clone()`
Returns a copy of a node, detached from any parent containers that the
original might have had.
```js
const cloned = parser.id({value: 'search'});
String(cloned);
// => #search
```
### `node.isAtPosition(line, column)`
Return a `boolean` indicating whether this node includes the character at the
position of the given line and column. Returns `undefined` if the nodes lack
sufficient source metadata to determine the position.
Arguments:
* `line`: 1-index based line number relative to the start of the selector.
* `column`: 1-index based column number relative to the start of the selector.
### `node.spaces`
Extra whitespaces around the node will be moved into `node.spaces.before` and
`node.spaces.after`. So for example, these spaces will be moved as they have
no semantic meaning:
```css
h1 , h2 {}
```
For descendent selectors, the value is always a single space.
```css
h1 h2 {}
```
Additional whitespace is found in either the `node.spaces.before` and `node.spaces.after` depending on the presence of comments or other whitespace characters. If the actual whitespace does not start or end with a single space, the node's raw value is set to the actual space(s) found in the source.
### `node.source`
An object describing the node's start/end, line/column source position.
Within the following CSS, the `.bar` class node ...
```css
.foo,
.bar {}
```
... will contain the following `source` object.
```js
source: {
start: {
line: 2,
column: 3
},
end: {
line: 2,
column: 6
}
}
```
### `node.sourceIndex`
The zero-based index of the node within the original source string.
Within the following CSS, the `.baz` class node will have a `sourceIndex` of `12`.
```css
.foo, .bar, .baz {}
```
## Container types
The `root`, `selector`, and `pseudo` nodes have some helper methods for working
with their children.
### `container.nodes`
An array of the container's children.
```js
// Input: h1 h2
selectors.at(0).nodes.length // => 3
selectors.at(0).nodes[0].value // => 'h1'
selectors.at(0).nodes[1].value // => ' '
```
### `container.first` & `container.last`
The first/last child of the container.
```js
selector.first === selector.nodes[0];
selector.last === selector.nodes[selector.nodes.length - 1];
```
### `container.at(index)`
Returns the node at position `index`.
```js
selector.at(0) === selector.first;
selector.at(0) === selector.nodes[0];
```
Arguments:
* `index`: The index of the node to return.
### `container.atPosition(line, column)`
Returns the node at the source position `index`.
```js
selector.at(0) === selector.first;
selector.at(0) === selector.nodes[0];
```
Arguments:
* `index`: The index of the node to return.
### `container.index(node)`
Return the index of the node within its container.
```js
selector.index(selector.nodes[2]) // => 2
```
Arguments:
* `node`: A node within the current container.
### `container.length`
Proxy to the length of the container's nodes.
```js
container.length === container.nodes.length
```
### `container` Array iterators
The container class provides proxies to certain Array methods; these are:
* `container.map === container.nodes.map`
* `container.reduce === container.nodes.reduce`
* `container.every === container.nodes.every`
* `container.some === container.nodes.some`
* `container.filter === container.nodes.filter`
* `container.sort === container.nodes.sort`
Note that these methods only work on a container's immediate children; recursive
iteration is provided by `container.walk`.
### `container.each(callback)`
Iterate the container's immediate children, calling `callback` for each child.
You may return `false` within the callback to break the iteration.
```js
let className;
selectors.each((selector, index) => {
if (selector.type === 'class') {
className = selector.value;
return false;
}
});
```
Note that unlike `Array#forEach()`, this iterator is safe to use whilst adding
or removing nodes from the container.
Arguments:
* `callback (function)`: A function to call for each node, which receives `node`
and `index` arguments.
### `container.walk(callback)`
Like `container#each`, but will also iterate child nodes as long as they are
`container` types.
```js
selectors.walk((selector, index) => {
// all nodes
});
```
Arguments:
* `callback (function)`: A function to call for each node, which receives `node`
and `index` arguments.
This iterator is safe to use whilst mutating `container.nodes`,
like `container#each`.
### `container.walk` proxies
The container class provides proxy methods for iterating over types of nodes,
so that it is easier to write modules that target specific selectors. Those
methods are:
* `container.walkAttributes`
* `container.walkClasses`
* `container.walkCombinators`
* `container.walkComments`
* `container.walkIds`
* `container.walkNesting`
* `container.walkPseudos`
* `container.walkTags`
* `container.walkUniversals`
### `container.split(callback)`
This method allows you to split a group of nodes by returning `true` from
a callback. It returns an array of arrays, where each inner array corresponds
to the groups that you created via the callback.
```js
// (input) => h1 h2>>h3
const list = selectors.first.split(selector => {
return selector.type === 'combinator';
});
// (node values) => [['h1', ' '], ['h2', '>>'], ['h3']]
```
Arguments:
* `callback (function)`: A function to call for each node, which receives `node`
as an argument.
### `container.prepend(node)` & `container.append(node)`
Add a node to the start/end of the container. Note that doing so will set
the parent property of the node to this container.
```js
const id = parser.id({value: 'search'});
selector.append(id);
```
Arguments:
* `node`: The node to add.
### `container.insertBefore(old, new)` & `container.insertAfter(old, new)`
Add a node before or after an existing node in a container:
```js
selectors.walk(selector => {
if (selector.type !== 'class') {
const className = parser.className({value: 'theme-name'});
selector.parent.insertAfter(selector, className);
}
});
```
Arguments:
* `old`: The existing node in the container.
* `new`: The new node to add before/after the existing node.
### `container.removeChild(node)`
Remove the node from the container. Note that you can also use
`node.remove()` if you would like to remove just a single node.
```js
selector.length // => 2
selector.remove(id)
selector.length // => 1;
id.parent // undefined
```
Arguments:
* `node`: The node to remove.
### `container.removeAll()` or `container.empty()`
Remove all children from the container.
```js
selector.removeAll();
selector.length // => 0
```
## Root nodes
A root node represents a comma separated list of selectors. Indeed, all
a root's `toString()` method does is join its selector children with a ','.
Other than this, it has no special functionality and acts like a container.
### `root.trailingComma`
This will be set to `true` if the input has a trailing comma, in order to
support parsing of legacy CSS hacks.
## Selector nodes
A selector node represents a single complex selector. For example, this
selector string `h1 h2 h3, [href] > p`, is represented as two selector nodes.
It has no special functionality of its own.
## Pseudo nodes
A pseudo selector extends a container node; if it has any parameters of its
own (such as `h1:not(h2, h3)`), they will be its children. Note that the pseudo
`value` will always contain the colons preceding the pseudo identifier. This
is so that both `:before` and `::before` are properly represented in the AST.
## Attribute nodes
### `attribute.quoted`
Returns `true` if the attribute's value is wrapped in quotation marks, false if it is not.
Remains `undefined` if there is no attribute value.
```css
[href=foo] /* false */
[href='foo'] /* true */
[href="foo"] /* true */
[href] /* undefined */
```
### `attribute.qualifiedAttribute`
Returns the attribute name qualified with the namespace if one is given.
### `attribute.offsetOf(part)`
Returns the offset of the attribute part specified relative to the
start of the node of the output string. This is useful in raising
error messages about a specific part of the attribute, especially
in combination with `attribute.sourceIndex`.
Returns `-1` if the name is invalid or the value doesn't exist in this
attribute.
The legal values for `part` are:
* `"ns"` - alias for "namespace"
* `"namespace"` - the namespace if it exists.
* `"attribute"` - the attribute name
* `"attributeNS"` - the start of the attribute or its namespace
* `"operator"` - the match operator of the attribute
* `"value"` - The value (string or identifier)
* `"insensitive"` - the case insensitivity flag
### `attribute.raws.unquoted`
Returns the unquoted content of the attribute's value.
Remains `undefined` if there is no attribute value.
```css
[href=foo] /* foo */
[href='foo'] /* foo */
[href="foo"] /* foo */
[href] /* undefined */
```
### `attribute.spaces`
Like `node.spaces` with the `before` and `after` values containing the spaces
around the element, the parts of the attribute can also have spaces before
and after them. The for each of `attribute`, `operator`, `value` and
`insensitive` there is corresponding property of the same nam in
`node.spaces` that has an optional `before` or `after` string containing only
whitespace.
Note that corresponding values in `attributes.raws.spaces` contain values
including any comments. If set, these values will override the
`attribute.spaces` value. Take care to remove them if changing
`attribute.spaces`.
### `attribute.raws`
The raws object stores comments and other information necessary to re-render
the node exactly as it was in the source.
If a comment is embedded within the identifiers for the `namespace`, `attribute`
or `value` then a property is placed in the raws for that value containing the full source of the propery including comments.
If a comment is embedded within the space between parts of the attribute
then the raw for that space is set accordingly.
Setting an attribute's property `raws` value to be deleted.
For now, changing the spaces required also updating or removing any of the
raws values that override them.
Example: `[ /*before*/ href /* after-attr */ = /* after-operator */ te/*inside-value*/st/* wow */ /*omg*/i/*bbq*/ /*whodoesthis*/]` would parse as:
```js
{
attribute: "href",
operatator: "=",
value: "test",
spaces: {
before: '',
after: '',
attribute: { before: ' ', after: ' ' },
operator: { after: ' ' },
value: { after: ' ' },
insensitive: { after: ' ' }
},
raws: {
spaces: {
attribute: { before: ' /*before*/ ', after: ' /* after-attr */ ' },
operator: { after: ' /* after-operator */ ' },
value: { after: '/* wow */ /*omg*/' },
insensitive: { after: '/*bbq*/ /*whodoesthis*/' }
},
unquoted: 'test',
value: 'te/*inside-value*/st'
}
}
```
## `Processor`
### `ProcessorOptions`
* `lossless` - When `true`, whitespace is preserved. Defaults to `true`.
* `updateSelector` - When `true`, if any processor methods are passed a postcss
`Rule` node instead of a string, then that Rule's selector is updated
with the results of the processing. Defaults to `true`.
### `process|processSync(selectors, [options])`
Processes the `selectors`, returning a string from the result of processing.
Note: when the `updateSelector` option is set, the rule's selector
will be updated with the resulting string.
**Example:**
```js
const parser = require("postcss-selector-parser");
const processor = parser();
let result = processor.processSync(' .class');
console.log(result);
// => .class
// Asynchronous operation
let promise = processor.process(' .class').then(result => {
console.log(result)
// => .class
});
// To have the parser normalize whitespace values, utilize the options
result = processor.processSync(' .class ', {lossless: false});
console.log(result);
// => .class
// For better syntax errors, pass a PostCSS Rule node.
const postcss = require('postcss');
rule = postcss.rule({selector: ' #foo > a, .class '});
processor.process(rule, {lossless: false, updateSelector: true}).then(result => {
console.log(result);
// => #foo>a,.class
console.log("rule:", rule.selector);
// => rule: #foo>a,.class
})
```
Arguments:
* `selectors (string|postcss.Rule)`: Either a selector string or a PostCSS Rule
node.
* `[options] (object)`: Process options
### `ast|astSync(selectors, [options])`
Like `process()` and `processSync()` but after
processing the `selectors` these methods return the `Root` node of the result
instead of a string.
Note: when the `updateSelector` option is set, the rule's selector
will be updated with the resulting string.
### `transform|transformSync(selectors, [options])`
Like `process()` and `processSync()` but after
processing the `selectors` these methods return the value returned by the
processor callback.
Note: when the `updateSelector` option is set, the rule's selector
will be updated with the resulting string.
### Error Handling Within Selector Processors
The root node passed to the selector processor callback
has a method `error(message, options)` that returns an
error object. This method should always be used to raise
errors relating to the syntax of selectors. The options
to this method are passed to postcss's error constructor
([documentation](http://api.postcss.org/Container.html#error)).
#### Async Error Example
```js
let processor = (root) => {
return new Promise((resolve, reject) => {
root.walkClasses((classNode) => {
if (/^(.*)[-_]/.test(classNode.value)) {
let msg = "classes may not have underscores or dashes in them";
reject(root.error(msg, {
index: classNode.sourceIndex + RegExp.$1.length + 1,
word: classNode.value
}));
}
});
resolve();
});
};
const postcss = require("postcss");
const parser = require("postcss-selector-parser");
const selectorProcessor = parser(processor);
const plugin = postcss.plugin('classValidator', (options) => {
return (root) => {
let promises = [];
root.walkRules(rule => {
promises.push(selectorProcessor.process(rule));
});
return Promise.all(promises);
};
});
postcss(plugin()).process(`
.foo-bar {
color: red;
}
`.trim(), {from: 'test.css'}).catch((e) => console.error(e.toString()));
// CssSyntaxError: classValidator: ./test.css:1:5: classes may not have underscores or dashes in them
//
// > 1 | .foo-bar {
// | ^
// 2 | color: red;
// 3 | }
```
#### Synchronous Error Example
```js
let processor = (root) => {
root.walkClasses((classNode) => {
if (/.*[-_]/.test(classNode.value)) {
let msg = "classes may not have underscores or dashes in them";
throw root.error(msg, {
index: classNode.sourceIndex,
word: classNode.value
});
}
});
};
const postcss = require("postcss");
const parser = require("postcss-selector-parser");
const selectorProcessor = parser(processor);
const plugin = postcss.plugin('classValidator', (options) => {
return (root) => {
root.walkRules(rule => {
selectorProcessor.processSync(rule);
});
};
});
postcss(plugin()).process(`
.foo-bar {
color: red;
}
`.trim(), {from: 'test.css'}).catch((e) => console.error(e.toString()));
// CssSyntaxError: classValidator: ./test.css:1:5: classes may not have underscores or dashes in them
//
// > 1 | .foo-bar {
// | ^
// 2 | color: red;
// 3 | }
```

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@@ -0,0 +1,466 @@
# 5.0.0
- Allow escaped dot within class name.
- Update PostCSS to 7.0.7 (patch)
# 5.0.0-rc.4
- Fixed and issue where comments immediately after an insensitive
(in attribute) were not parsed correctly.
- Updated `cssesc` to 2.0.0 (major).
- Removed outdated integration tests.
- Added tests for custom selectors, tags with attributes, the universal
selector with pseudos, and tokens after combinators.
# 5.0.0-rc.1
To ease adoption of the v5.0 release, we have relaxed the node version
check performed by npm at installation time to allow for node 4, which
remains officially unsupported, but likely to continue working for the
time being.
# 5.0.0-rc.0
This release has **BREAKING CHANGES** that were required to fix regressions
in 4.0.0 and to make the Combinator Node API consistent for all combinator
types. Please read carefully.
## Summary of Changes
* The way a descendent combinator that isn't a single space character (E.g. `.a .b`) is stored in the AST has changed.
* Named Combinators (E.g. `.a /for/ .b`) are now properly parsed as a combinator.
* It is now possible to look up a node based on the source location of a character in that node and to query nodes if they contain some character.
* Several bug fixes that caused the parser to hang and run out of memory when a `/` was encountered have been fixed.
* The minimum supported version of Node is now `v6.0.0`.
### Changes to the Descendent Combinator
In prior releases, the value of a descendant combinator with multiple spaces included all the spaces.
* `.a .b`: Extra spaces are now stored as space before.
- Old & Busted:
- `combinator.value === " "`
- New hotness:
- `combinator.value === " " && combinator.spaces.before === " "`
* `.a /*comment*/.b`: A comment at the end of the combinator causes extra space to become after space.
- Old & Busted:
- `combinator.value === " "`
- `combinator.raws.value === " /*comment/"`
- New hotness:
- `combinator.value === " "`
- `combinator.spaces.after === " "`
- `combinator.raws.spaces.after === " /*comment*/"`
* `.a<newline>.b`: whitespace that doesn't start or end with a single space character is stored as a raw value.
- Old & Busted:
- `combinator.value === "\n"`
- `combinator.raws.value === undefined`
- New hotness:
- `combinator.value === " "`
- `combinator.raws.value === "\n"`
### Support for "Named Combinators"
Although, nonstandard and unlikely to ever become a standard, combinators like `/deep/` and `/for/` are now properly supported.
Because they've been taken off the standardization track, there is no spec-official name for combinators of the form `/<ident>/`. However, I talked to [Tab Atkins](https://twitter.com/tabatkins) and we agreed to call them "named combinators" so now they are called that.
Before this release such named combinators were parsed without intention and generated three nodes of type `"tag"` where the first and last nodes had a value of `"/"`.
* `.a /for/ .b` is parsed as a combinator.
- Old & Busted:
- `root.nodes[0].nodes[1].type === "tag"`
- `root.nodes[0].nodes[1].value === "/"`
- New hotness:
- `root.nodes[0].nodes[1].type === "combinator"`
- `root.nodes[0].nodes[1].value === "/for/"`
* `.a /F\6fR/ .b` escapes are handled and uppercase is normalized.
- Old & Busted:
- `root.nodes[0].nodes[2].type === "tag"`
- `root.nodes[0].nodes[2].value === "F\\6fR"`
- New hotness:
- `root.nodes[0].nodes[1].type === "combinator"`
- `root.nodes[0].nodes[1].value === "/for/"`
- `root.nodes[0].nodes[1].raws.value === "/F\\6fR/"`
### Source position checks and lookups
A new API was added to look up a node based on the source location.
```js
const selectorParser = require("postcss-selector-parser");
// You can find the most specific node for any given character
let combinator = selectorParser.astSync(".a > .b").atPosition(1,4);
combinator.toString() === " > ";
// You can check if a node includes a specific character
// Whitespace surrounding the node that is owned by that node
// is included in the check.
[2,3,4,5,6].map(column => combinator.isAtPosition(1, column));
// => [false, true, true, true, false]
```
# 4.0.0
This release has **BREAKING CHANGES** that were required to fix bugs regarding values with escape sequences. Please read carefully.
* **Identifiers with escapes** - CSS escape sequences are now hidden from the public API by default.
The normal value of a node like a class name or ID, or an aspect of a node such as attribute
selector's value, is unescaped. Escapes representing Non-ascii characters are unescaped into
unicode characters. For example: `bu\tton, .\31 00, #i\2764\FE0Fu, [attr="value is \"quoted\""]`
will parse respectively to the values `button`, `100`, `i❤️u`, `value is "quoted"`.
The original escape sequences for these values can be found in the corresponding property name
in `node.raws`. Where possible, deprecation warnings were added, but the nature
of escape handling makes it impossible to detect what is escaped or not. Our expectation is
that most users are neither expecting nor handling escape sequences in their use of this library,
and so for them, this is a bug fix. Users who are taking care to handle escapes correctly can
now update their code to remove the escape handling and let us do it for them.
* **Mutating values with escapes** - When you make an update to a node property that has escape handling
The value is assumed to be unescaped, and any special characters are escaped automatically and
the corresponding `raws` value is immediately updated. This can result in changes to the original
escape format. Where the exact value of the escape sequence is important there are methods that
allow both values to be set in conjunction. There are a number of new convenience methods for
manipulating values that involve escapes, especially for attributes values where the quote mark
is involved. See https://github.com/postcss/postcss-selector-parser/pull/133 for an extensive
write-up on these changes.
**Upgrade/API Example**
In `3.x` there was no unescape handling and internal consistency of several properties was the caller's job to maintain. It was very easy for the developer
to create a CSS file that did not parse correctly when some types of values
were in use.
```js
const selectorParser = require("postcss-selector-parser");
let attr = selectorParser.attribute({attribute: "id", operator: "=", value: "a-value"});
attr.value; // => "a-value"
attr.toString(); // => [id=a-value]
// Add quotes to an attribute's value.
// All these values have to be set by the caller to be consistent:
// no internal consistency is maintained.
attr.raws.unquoted = attr.value
attr.value = "'" + attr.value + "'";
attr.value; // => "'a-value'"
attr.quoted = true;
attr.toString(); // => "[id='a-value']"
```
In `4.0` there is a convenient API for setting and mutating values
that may need escaping. Especially for attributes.
```js
const selectorParser = require("postcss-selector-parser");
// The constructor requires you specify the exact escape sequence
let className = selectorParser.className({value: "illegal class name", raws: {value: "illegal\\ class\\ name"}});
className.toString(); // => '.illegal\\ class\\ name'
// So it's better to set the value as a property
className = selectorParser.className();
// Most properties that deal with identifiers work like this
className.value = "escape for me";
className.value; // => 'escape for me'
className.toString(); // => '.escape\\ for\\ me'
// emoji and all non-ascii are escaped to ensure it works in every css file.
className.value = "😱🦄😍";
className.value; // => '😱🦄😍'
className.toString(); // => '.\\1F631\\1F984\\1F60D'
// you can control the escape sequence if you want, or do bad bad things
className.setPropertyAndEscape('value', 'xxxx', 'yyyy');
className.value; // => "xxxx"
className.toString(); // => ".yyyy"
// Pass a value directly through to the css output without escaping it.
className.setPropertyWithoutEscape('value', '$REPLACE_ME$');
className.value; // => "$REPLACE_ME$"
className.toString(); // => ".$REPLACE_ME$"
// The biggest changes are to the Attribute class
// passing quoteMark explicitly is required to avoid a deprecation warning.
let attr = selectorParser.attribute({attribute: "id", operator: "=", value: "a-value", quoteMark: null});
attr.toString(); // => "[id=a-value]"
// Get the value with quotes on it and any necessary escapes.
// This is the same as reading attr.value in 3.x.
attr.getQuotedValue(); // => "a-value";
attr.quoteMark; // => null
// Add quotes to an attribute's value.
attr.quoteMark = "'"; // This is all that's required.
attr.toString(); // => "[id='a-value']"
attr.quoted; // => true
// The value is still the same, only the quotes have changed.
attr.value; // => a-value
attr.getQuotedValue(); // => "'a-value'";
// deprecated assignment, no warning because there's no escapes
attr.value = "new-value";
// no quote mark is needed so it is removed
attr.getQuotedValue(); // => "new-value";
// deprecated assignment,
attr.value = "\"a 'single quoted' value\"";
// > (node:27859) DeprecationWarning: Assigning an attribute a value containing characters that might need to be escaped is deprecated. Call attribute.setValue() instead.
attr.getQuotedValue(); // => '"a \'single quoted\' value"';
// quote mark inferred from first and last characters.
attr.quoteMark; // => '"'
// setValue takes options to make manipulating the value simple.
attr.setValue('foo', {smart: true});
// foo doesn't require any escapes or quotes.
attr.toString(); // => '[id=foo]'
attr.quoteMark; // => null
// An explicit quote mark can be specified
attr.setValue('foo', {quoteMark: '"'});
attr.toString(); // => '[id="foo"]'
// preserves quote mark by default
attr.setValue('bar');
attr.toString(); // => '[id="bar"]'
attr.quoteMark = null;
attr.toString(); // => '[id=bar]'
// with no arguments, it preserves quote mark even when it's not a great idea
attr.setValue('a value \n that should be quoted');
attr.toString(); // => '[id=a\\ value\\ \\A\\ that\\ should\\ be\\ quoted]'
// smart preservation with a specified default
attr.setValue('a value \n that should be quoted', {smart: true, preferCurrentQuoteMark: true, quoteMark: "'"});
// => "[id='a value \\A that should be quoted']"
attr.quoteMark = '"';
// => '[id="a value \\A that should be quoted"]'
// this keeps double quotes because it wants to quote the value and the existing value has double quotes.
attr.setValue('this should be quoted', {smart: true, preferCurrentQuoteMark: true, quoteMark: "'"});
// => '[id="this should be quoted"]'
// picks single quotes because the value has double quotes
attr.setValue('a "double quoted" value', {smart: true, preferCurrentQuoteMark: true, quoteMark: "'"});
// => "[id='a "double quoted" value']"
// setPropertyAndEscape lets you do anything you want. Even things that are a bad idea and illegal.
attr.setPropertyAndEscape('value', 'xxxx', 'the password is 42');
attr.value; // => "xxxx"
attr.toString(); // => "[id=the password is 42]"
// Pass a value directly through to the css output without escaping it.
attr.setPropertyWithoutEscape('value', '$REPLACEMENT$');
attr.value; // => "$REPLACEMENT$"
attr.toString(); // => "[id=$REPLACEMENT$]"
```
# 3.1.2
* Fix: Removed dot-prop dependency since it's no longer written in es5.
# 3.1.1
* Fix: typescript definitions weren't in the published package.
# 3.1.0
* Fixed numerous bugs in attribute nodes relating to the handling of comments
and whitespace. There's significant changes to `attrNode.spaces` and `attrNode.raws` since the `3.0.0` release.
* Added `Attribute#offsetOf(part)` to get the offset location of
attribute parts like `"operator"` and `"value"`. This is most
often added to `Attribute#sourceIndex` for error reporting.
# 3.0.0
## Breaking changes
* Some tweaks to the tokenizer/attribute selector parsing mean that whitespace
locations might be slightly different to the 2.x code.
* Better attribute selector parsing with more validation; postcss-selector-parser
no longer uses regular expressions to parse attribute selectors.
* Added an async API (thanks to @jacobp100); the default `process` API is now
async, and the sync API is now accessed through `processSync` instead.
* `process()` and `processSync()` now return a string instead of the Processor
instance.
* Tweaks handling of Less interpolation (thanks to @jwilsson).
* Removes support for Node 0.12.
## Other changes
* `ast()` and `astSync()` methods have been added to the `Processor`. These
return the `Root` node of the selectors after processing them.
* `transform()` and `transformSync()` methods have been added to the
`Processor`. These return the value returned by the processor callback
after processing the selectors.
* Set the parent when inserting a node (thanks to @chriseppstein).
* Correctly adjust indices when using insertBefore/insertAfter (thanks to @tivac).
* Fixes handling of namespaces with qualified tag selectors.
* `process`, `ast` and `transform` (and their sync variants) now accept a
`postcss` rule node. When provided, better errors are generated and selector
processing is automatically set back to the rule selector (unless the `updateSelector` option is set to `false`.)
* Now more memory efficient when tokenizing selectors.
### Upgrade hints
The pattern of:
`rule.selector = processor.process(rule.selector).result.toString();`
is now:
`processor.processSync(rule)`
# 2.2.3
* Resolves an issue where the parser would not reduce multiple spaces between an
ampersand and another simple selector in lossy mode (thanks to @adam-26).
# 2.2.2
* No longer hangs on an unescaped semicolon; instead the parser will throw
an exception for these cases.
# 2.2.1
* Allows a consumer to specify whitespace tokens when creating a new Node
(thanks to @Semigradsky).
# 2.2.0
* Added a new option to normalize whitespace when parsing the selector string
(thanks to @adam-26).
# 2.1.1
* Better unquoted value handling within attribute selectors
(thanks to @evilebottnawi).
# 2.1.0
* Added: Use string constants for all node types & expose them on the main
parser instance (thanks to @Aweary).
# 2.0.0
This release contains the following breaking changes:
* Renamed all `eachInside` iterators to `walk`. For example, `eachTag` is now
`walkTags`, and `eachInside` is now `walk`.
* Renamed `Node#removeSelf()` to `Node#remove()`.
* Renamed `Container#remove()` to `Container#removeChild()`.
* Renamed `Node#raw` to `Node#raws` (thanks to @davidtheclark).
* Now parses `&` as the *nesting* selector, rather than a *tag* selector.
* Fixes misinterpretation of Sass interpolation (e.g. `#{foo}`) as an
id selector (thanks to @davidtheclark).
and;
* Fixes parsing of attribute selectors with equals signs in them
(e.g. `[data-attr="foo=bar"]`) (thanks to @montmanu).
* Adds `quoted` and `raw.unquoted` properties to attribute nodes
(thanks to @davidtheclark).
# 1.3.3
* Fixes an infinite loop on `)` and `]` tokens when they had no opening pairs.
Now postcss-selector-parser will throw when it encounters these lone tokens.
# 1.3.2
* Now uses plain integers rather than `str.charCodeAt(0)` for compiled builds.
# 1.3.1
* Update flatten to v1.x (thanks to @shinnn).
# 1.3.0
* Adds a new node type, `String`, to fix a crash on selectors such as
`foo:bar("test")`.
# 1.2.1
* Fixes a crash when the parser encountered a trailing combinator.
# 1.2.0
* A more descriptive error is thrown when the parser expects to find a
pseudo-class/pseudo-element (thanks to @ashelley).
* Adds support for line/column locations for selector nodes, as well as a
`Node#sourceIndex` method (thanks to @davidtheclark).
# 1.1.4
* Fixes a crash when a selector started with a `>` combinator. The module will
now no longer throw if a selector has a leading/trailing combinator node.
# 1.1.3
* Fixes a crash on `@` tokens.
# 1.1.2
* Fixes an infinite loop caused by using parentheses in a non-pseudo element
context.
# 1.1.1
* Fixes a crash when a backslash ended a selector string.
# 1.1.0
* Adds support for replacing multiple nodes at once with `replaceWith`
(thanks to @jonathantneal).
* Parser no longer throws on sequential IDs and trailing commas, to support
parsing of selector hacks.
# 1.0.1
* Fixes using `insertAfter` and `insertBefore` during iteration.
# 1.0.0
* Adds `clone` and `replaceWith` methods to nodes.
* Adds `insertBefore` and `insertAfter` to containers.
* Stabilises API.
# 0.0.5
* Fixes crash on extra whitespace inside a pseudo selector's parentheses.
* Adds sort function to the container class.
* Enables the parser to pass its input through without transforming.
* Iteration-safe `each` and `eachInside`.
# 0.0.4
* Tidy up redundant duplication.
* Fixes a bug where the parser would loop infinitely on universal selectors
inside pseudo selectors.
* Adds `length` getter and `eachInside`, `map`, `reduce` to the container class.
* When a selector has been removed from the tree, the root node will no longer
cast it to a string.
* Adds node type iterators to the container class (e.g. `eachComment`).
* Adds filter function to the container class.
* Adds split function to the container class.
* Create new node types by doing `parser.id(opts)` etc.
* Adds support for pseudo classes anywhere in the selector.
# 0.0.3
* Adds `next` and `prev` to the node class.
* Adds `first` and `last` getters to the container class.
* Adds `every` and `some` iterators to the container class.
* Add `empty` alias for `removeAll`.
* Combinators are now types of node.
* Fixes the at method so that it is not an alias for `index`.
* Tidy up creation of new nodes in the parser.
* Refactors how namespaces are handled for consistency & less redundant code.
* Refactors AST to use `nodes` exclusively, and eliminates excessive nesting.
* Fixes nested pseudo parsing.
* Fixes whitespace parsing.
# 0.0.2
* Adds support for namespace selectors.
* Adds support for selectors joined by escaped spaces - such as `.\31\ 0`.
# 0.0.1
* Initial release.

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Copyright (c) Ben Briggs <beneb.info@gmail.com> (http://beneb.info)
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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# postcss-selector-parser [![Build Status](https://travis-ci.org/postcss/postcss-selector-parser.svg?branch=master)](https://travis-ci.org/postcss/postcss-selector-parser)
> Selector parser with built in methods for working with selector strings.
## Install
With [npm](https://npmjs.com/package/postcss-selector-parser) do:
```
npm install postcss-selector-parser
```
## Quick Start
```js
const parser = require('postcss-selector-parser');
const transform = selectors => {
selectors.walk(selector => {
// do something with the selector
console.log(String(selector))
});
};
const transformed = parser(transform).processSync('h1, h2, h3');
```
To normalize selector whitespace:
```js
const parser = require('postcss-selector-parser');
const normalized = parser().processSync('h1, h2, h3', {lossless: false});
// -> h1,h2,h3
```
Async support is provided through `parser.process` and will resolve a Promise
with the resulting selector string.
## API
Please see [API.md](API.md).
## Credits
* Huge thanks to Andrey Sitnik (@ai) for work on PostCSS which helped
accelerate this module's development.
## License
MIT

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{
"name": "postcss-selector-parser",
"version": "5.0.0",
"devDependencies": {
"ava": "^0.25.0",
"babel-cli": "^6.26.0",
"babel-core": "^6.26.3",
"babel-eslint": "^8.2.3",
"babel-plugin-add-module-exports": "^0.2.0",
"babel-plugin-precompile-charcodes": "^1.1.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-es2015-loose": "^7.0.0",
"babel-preset-stage-0": "^6.24.1",
"babel-register": "^6.26.0",
"coveralls": "^3.0.2",
"del-cli": "^1.1.0",
"eslint": "^4.19.1",
"eslint-plugin-babel": "^3.3.0",
"eslint-plugin-import": "^2.14.0",
"glob": "^7.1.3",
"minimist": "^1.2.0",
"nyc": "^11.7.3",
"postcss": "^7.0.7",
"semver": "^5.6.0"
},
"main": "dist/index.js",
"types": "postcss-selector-parser.d.ts",
"files": [
"API.md",
"CHANGELOG.md",
"LICENSE-MIT",
"dist",
"postcss-selector-parser.d.ts"
],
"scripts": {
"pretest": "eslint src",
"prepare": "del-cli dist && BABEL_ENV=publish babel src --out-dir dist --ignore /__tests__/",
"lintfix": "eslint --fix src",
"report": "nyc report --reporter=html",
"test": "nyc ava src/__tests__/*.js",
"testone": "ava"
},
"dependencies": {
"cssesc": "^2.0.0",
"indexes-of": "^1.0.1",
"uniq": "^1.0.1"
},
"license": "MIT",
"engines": {
"node": ">=4"
},
"homepage": "https://github.com/postcss/postcss-selector-parser",
"contributors": [
{
"name": "Ben Briggs",
"email": "beneb.info@gmail.com",
"url": "http://beneb.info"
},
{
"name": "Chris Eppstein",
"email": "chris@eppsteins.net",
"url": "http://twitter.com/chriseppstein"
}
],
"repository": "postcss/postcss-selector-parser",
"ava": {
"require": "babel-register",
"concurrency": 5
},
"nyc": {
"exclude": [
"node_modules",
"**/__tests__"
]
}
}

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// Type definitions for postcss-selector-parser 2.2.3
// Definitions by: Chris Eppstein <chris@eppsteins.net>
/*~ Note that ES6 modules cannot directly export callable functions.
*~ This file should be imported using the CommonJS-style:
*~ import x = require('someLibrary');
*~
*~ Refer to the documentation to understand common
*~ workarounds for this limitation of ES6 modules.
*/
/*~ This declaration specifies that the function
*~ is the exported object from the file
*/
export = parser;
// TODO: Conditional types in TS 1.8 will really clean this up.
declare function parser(): parser.Processor<never>;
declare function parser<Transform>(processor: parser.AsyncProcessor<Transform>): parser.Processor<Transform, never>;
declare function parser(processor: parser.AsyncProcessor<void>): parser.Processor<never, never>;
declare function parser<Transform>(processor: parser.SyncProcessor<Transform>): parser.Processor<Transform>;
declare function parser(processor: parser.SyncProcessor<void>): parser.Processor<never>;
declare function parser<Transform>(processor?: parser.SyncProcessor<Transform> | parser.AsyncProcessor<Transform>): parser.Processor<Transform>;
/*~ If you want to expose types from your module as well, you can
*~ place them in this block. Often you will want to describe the
*~ shape of the return type of the function; that type should
*~ be declared in here, as this example shows.
*/
declare namespace parser {
/* copied from postcss -- so we don't need to add a dependency */
type ErrorOptions = {
plugin?: string;
word?: string;
index?: number
};
/* the bits we use of postcss.Rule, copied from postcss -- so we don't need to add a dependency */
type PostCSSRuleNode = {
selector: string
/**
* @returns postcss.CssSyntaxError but it's a complex object, caller
* should cast to it if they have a dependency on postcss.
*/
error(message: string, options?: ErrorOptions): Error;
};
/** Accepts a string */
type Selectors = string | PostCSSRuleNode
type ProcessorFn<ReturnType = void> = (root: parser.Root) => ReturnType;
type SyncProcessor<Transform = void> = ProcessorFn<Transform>;
type AsyncProcessor<Transform = void> = ProcessorFn<PromiseLike<Transform>>;
const TAG: "tag";
const STRING: "string";
const SELECTOR: "selector";
const ROOT: "root";
const PSEUDO: "pseudo";
const NESTING: "nesting";
const ID: "id";
const COMMENT: "comment";
const COMBINATOR: "combinator";
const CLASS: "class";
const ATTRIBUTE: "attribute";
const UNIVERSAL: "universal";
interface NodeTypes {
tag: Tag,
string: String,
selector: Selector,
root: Root,
pseudo: Pseudo,
nesting: Nesting,
id: Identifier,
comment: Comment,
combinator: Combinator,
class: ClassName,
attribute: Attribute,
universal: Universal
}
type Node = NodeTypes[keyof NodeTypes];
function isNode(node: any): node is Node;
interface Options {
/**
* Preserve whitespace when true. Default: false;
*/
lossless: boolean;
/**
* When true and a postcss.Rule is passed, set the result of
* processing back onto the rule when done. Default: false.
*/
updateSelector: boolean;
}
class Processor<
TransformType = never,
SyncSelectorsType extends Selectors | never = Selectors
> {
res: Root;
readonly result: String;
ast(selectors: Selectors, options?: Partial<Options>): Promise<Root>;
astSync(selectors: SyncSelectorsType, options?: Partial<Options>): Root;
transform(selectors: Selectors, options?: Partial<Options>): Promise<TransformType>;
transformSync(selectors: SyncSelectorsType, options?: Partial<Options>): TransformType;
process(selectors: Selectors, options?: Partial<Options>): Promise<string>;
processSync(selectors: SyncSelectorsType, options?: Partial<Options>): string;
}
interface ParserOptions {
css: string;
error: (message: string, options: ErrorOptions) => Error;
options: Options;
}
class Parser {
input: ParserOptions;
lossy: boolean;
position: number;
root: Root;
selectors: string;
current: Selector;
constructor(input: ParserOptions);
/**
* Raises an error, if the processor is invoked on
* a postcss Rule node, a better error message is raised.
*/
error(message: string, options?: ErrorOptions): void;
}
interface NodeSource {
start?: {
line: number,
column: number
},
end?: {
line: number,
column: number
}
}
interface SpaceAround {
before: string;
after: string;
}
interface Spaces extends SpaceAround {
[spaceType: string]: string | Partial<SpaceAround> | undefined;
}
interface NodeOptions<Value = string> {
value: Value;
spaces?: Partial<Spaces>;
source?: NodeSource;
sourceIndex?: number;
}
interface Base<
Value extends string | undefined = string,
ParentType extends Container | undefined = Container | undefined
> {
type: keyof NodeTypes;
parent: ParentType;
value: Value;
spaces: Spaces;
source?: NodeSource;
sourceIndex: number;
rawSpaceBefore: string;
rawSpaceAfter: string;
remove(): Node;
replaceWith(...nodes: Node[]): Node;
next(): Node;
prev(): Node;
clone(opts: {[override: string]:any}): Node;
/**
* Return whether this node includes the character at the position of the given line and column.
* Returns undefined if the nodes lack sufficient source metadata to determine the position.
* @param line 1-index based line number relative to the start of the selector.
* @param column 1-index based column number relative to the start of the selector.
*/
isAtPosition(line: number, column: number): boolean | undefined;
/**
* Some non-standard syntax doesn't follow normal escaping rules for css,
* this allows the escaped value to be specified directly, allowing illegal characters to be
* directly inserted into css output.
* @param name the property to set
* @param value the unescaped value of the property
* @param valueEscaped optional. the escaped value of the property.
*/
setPropertyAndEscape(name: string, value: any, valueEscaped: string): void;
/**
* When you want a value to passed through to CSS directly. This method
* deletes the corresponding raw value causing the stringifier to fallback
* to the unescaped value.
* @param name the property to set.
* @param value The value that is both escaped and unescaped.
*/
setPropertyWithoutEscape(name: string, value: any): void;
/**
* Some non-standard syntax doesn't follow normal escaping rules for css.
* This allows non standard syntax to be appended to an existing property
* by specifying the escaped value. By specifying the escaped value,
* illegal characters are allowed to be directly inserted into css output.
* @param {string} name the property to set
* @param {any} value the unescaped value of the property
* @param {string} valueEscaped optional. the escaped value of the property.
*/
appendToPropertyAndEscape(name: string, value: any, valueEscaped: string): void;
toString(): string;
}
interface ContainerOptions extends NodeOptions {
nodes?: Array<Node>;
}
interface Container<Value extends string | undefined = string> extends Base<Value> {
nodes: Array<Node>;
append(selector: Selector): Container;
prepend(selector: Selector): Container;
at(index: number): Node;
/**
* Return the most specific node at the line and column number given.
* The source location is based on the original parsed location, locations aren't
* updated as selector nodes are mutated.
*
* Note that this location is relative to the location of the first character
* of the selector, and not the location of the selector in the overall document
* when used in conjunction with postcss.
*
* If not found, returns undefined.
* @param line The line number of the node to find. (1-based index)
* @param col The column number of the node to find. (1-based index)
*/
atPosition(line: number, column: number): Node;
index(child: Node): number;
readonly first: Node;
readonly last: Node;
readonly length: number;
removeChild(child: Node): Container;
removeAll(): Container;
empty(): Container;
insertAfter(oldNode: Node, newNode: Node): Container;
insertBefore(oldNode: Node, newNode: Node): Container;
each(callback: (node: Node) => boolean | void): boolean | undefined;
walk(callback: (node: Node) => boolean | void): boolean | undefined;
walkAttributes(callback: (node: Node) => boolean | void): boolean | undefined;
walkClasses(callback: (node: Node) => boolean | void): boolean | undefined;
walkCombinators(callback: (node: Node) => boolean | void): boolean | undefined;
walkComments(callback: (node: Node) => boolean | void): boolean | undefined;
walkIds(callback: (node: Node) => boolean | void): boolean | undefined;
walkNesting(callback: (node: Node) => boolean | void): boolean | undefined;
walkPseudos(callback: (node: Node) => boolean | void): boolean | undefined;
walkTags(callback: (node: Node) => boolean | void): boolean | undefined;
split(callback: (node: Node) => boolean): [Node[], Node[]];
map(callback: (node: Node) => Node): Node[];
reduce<T>(callback: (node: Node) => Node, memo: T): T;
every(callback: (node: Node) => boolean): boolean;
some(callback: (node: Node) => boolean): boolean;
filter(callback: (node: Node) => boolean): Node[];
sort(callback: (nodeA: Node, nodeB: Node) => number): Node[];
toString(): string;
}
function isContainer(node: any): node is Root | Selector | Pseudo;
interface NamespaceOptions<Value extends string | undefined = string> extends NodeOptions<Value> {
namespace?: string | true;
}
interface Namespace<Value extends string | undefined = string> extends Base<Value> {
/** alias for namespace */
ns: string | true;
/**
* namespace prefix.
*/
namespace: string | true;
/**
* If a namespace exists, prefix the value provided with it, separated by |.
*/
qualifiedName(value: string): string;
/**
* A string representing the namespace suitable for output.
*/
readonly namespaceString: string;
}
function isNamespace(node: any): node is Attribute | Tag;
interface Root extends Container<undefined> {
type: "root";
/**
* Raises an error, if the processor is invoked on
* a postcss Rule node, a better error message is raised.
*/
error(message: string, options?: ErrorOptions): Error;
nodeAt(line: number, column: number): Node
}
function root(opts: ContainerOptions): Root;
function isRoot(node: any): node is Root;
interface Selector extends Container {
type: "selector";
}
function selector(opts: ContainerOptions): Selector;
function isSelector(node: any): node is Selector;
interface Combinator extends Base {
type: "combinator"
}
function combinator(opts: NodeOptions): Combinator;
function isCombinator(node: any): node is Combinator;
interface ClassName extends Base {
type: "class";
}
function className(opts: NamespaceOptions): ClassName;
function isClassName(node: any): node is ClassName;
type AttributeOperator = "=" | "~=" | "|=" | "^=" | "$=" | "*=";
type QuoteMark = '"' | "'" | null;
interface PreferredQuoteMarkOptions {
quoteMark?: QuoteMark;
preferCurrentQuoteMark?: boolean;
}
interface SmartQuoteMarkOptions extends PreferredQuoteMarkOptions {
smart?: boolean;
}
interface AttributeOptions extends NamespaceOptions<string | undefined> {
attribute: string;
operator?: AttributeOperator;
insensitive?: boolean;
quoteMark?: QuoteMark;
/** @deprecated Use quoteMark instead. */
quoted?: boolean;
spaces?: {
before?: string;
after?: string;
attribute?: Partial<SpaceAround>;
operator?: Partial<SpaceAround>;
value?: Partial<SpaceAround>;
insensitive?: Partial<SpaceAround>;
}
raws: {
unquoted?: string;
attribute?: string;
operator?: string;
value?: string;
insensitive?: string;
spaces?: {
attribute?: Partial<Spaces>;
operator?: Partial<Spaces>;
value?: Partial<Spaces>;
insensitive?: Partial<Spaces>;
}
};
}
interface Attribute extends Namespace<string | undefined> {
type: "attribute";
attribute: string;
operator?: AttributeOperator;
insensitive?: boolean;
quoteMark: QuoteMark;
quoted?: boolean;
spaces: {
before: string;
after: string;
attribute?: Partial<Spaces>;
operator?: Partial<Spaces>;
value?: Partial<Spaces>;
insensitive?: Partial<Spaces>;
}
raws: {
/** @deprecated The attribute value is unquoted, use that instead.. */
unquoted?: string;
attribute?: string;
operator?: string;
/** The value of the attribute with quotes and escapes. */
value?: string;
insensitive?: string;
spaces?: {
attribute?: Partial<Spaces>;
operator?: Partial<Spaces>;
value?: Partial<Spaces>;
insensitive?: Partial<Spaces>;
}
};
/**
* The attribute name after having been qualified with a namespace.
*/
readonly qualifiedAttribute: string;
/**
* The case insensitivity flag or an empty string depending on whether this
* attribute is case insensitive.
*/
readonly insensitiveFlag : 'i' | '';
/**
* Returns the attribute's value quoted such that it would be legal to use
* in the value of a css file. The original value's quotation setting
* used for stringification is left unchanged. See `setValue(value, options)`
* if you want to control the quote settings of a new value for the attribute or
* `set quoteMark(mark)` if you want to change the quote settings of the current
* value.
*
* You can also change the quotation used for the current value by setting quoteMark.
**/
getQuotedValue(options?: SmartQuoteMarkOptions): string;
/**
* Set the unescaped value with the specified quotation options. The value
* provided must not include any wrapping quote marks -- those quotes will
* be interpreted as part of the value and escaped accordingly.
* @param value
*/
setValue(value: string, options?: SmartQuoteMarkOptions): void;
/**
* Intelligently select a quoteMark value based on the value's contents. If
* the value is a legal CSS ident, it will not be quoted. Otherwise a quote
* mark will be picked that minimizes the number of escapes.
*
* If there's no clear winner, the quote mark from these options is used,
* then the source quote mark (this is inverted if `preferCurrentQuoteMark` is
* true). If the quoteMark is unspecified, a double quote is used.
**/
smartQuoteMark(options: PreferredQuoteMarkOptions): QuoteMark;
/**
* Selects the preferred quote mark based on the options and the current quote mark value.
* If you want the quote mark to depend on the attribute value, call `smartQuoteMark(opts)`
* instead.
*/
preferredQuoteMark(options: PreferredQuoteMarkOptions): QuoteMark
/**
* returns the offset of the attribute part specified relative to the
* start of the node of the output string.
*
* * "ns" - alias for "namespace"
* * "namespace" - the namespace if it exists.
* * "attribute" - the attribute name
* * "attributeNS" - the start of the attribute or its namespace
* * "operator" - the match operator of the attribute
* * "value" - The value (string or identifier)
* * "insensitive" - the case insensitivity flag;
* @param part One of the possible values inside an attribute.
* @returns -1 if the name is invalid or the value doesn't exist in this attribute.
*/
offsetOf(part: "ns" | "namespace" | "attribute" | "attributeNS" | "operator" | "value" | "insensitive"): number;
}
function attribute(opts: AttributeOptions): Attribute;
function isAttribute(node: any): node is Attribute;
interface Pseudo extends Container {
type: "pseudo";
}
function pseudo(opts: ContainerOptions): Pseudo;
/**
* Checks wether the node is the Psuedo subtype of node.
*/
function isPseudo(node: any): node is Pseudo;
/**
* Checks wether the node is, specifically, a pseudo element instead of
* pseudo class.
*/
function isPseudoElement(node: any): node is Pseudo;
/**
* Checks wether the node is, specifically, a pseudo class instead of
* pseudo element.
*/
function isPseudoClass(node: any): node is Pseudo;
interface Tag extends Namespace {
type: "tag";
}
function tag(opts: NamespaceOptions): Tag;
function isTag(node: any): node is Tag;
interface Comment extends Base {
type: "comment";
}
function comment(opts: NodeOptions): Comment;
function isComment(node: any): node is Comment;
interface Identifier extends Base {
type: "id";
}
function id(opts: any): any;
function isIdentifier(node: any): node is Identifier;
interface Nesting extends Base {
type: "nesting";
}
function nesting(opts: any): any;
function isNesting(node: any): node is Nesting;
interface String extends Base {
type: "string";
}
function string(opts: NodeOptions): String;
function isString(node: any): node is String;
interface Universal extends Base {
type: "universal";
}
function universal(opts?: NamespaceOptions): any;
function isUniversal(node: any): node is Universal;
}

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The MIT License (MIT)
Copyright 2013 Andrey Sitnik <andrey@sitnik.ru>
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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# PostCSS [![Gitter][chat-img]][chat]
<img align="right" width="95" height="95"
alt="Philosopher’s stone, logo of PostCSS"
src="http://postcss.github.io/postcss/logo.svg">
[chat-img]: https://img.shields.io/badge/Gitter-Join_the_PostCSS_chat-brightgreen.svg
[chat]: https://gitter.im/postcss/postcss
PostCSS is a tool for transforming styles with JS plugins.
These plugins can lint your CSS, support variables and mixins,
transpile future CSS syntax, inline images, and more.
PostCSS is used by industry leaders including Wikipedia, Twitter, Alibaba,
and JetBrains. The [Autoprefixer] PostCSS plugin is one of the most popular
CSS processors.
PostCSS takes a CSS file and provides an API to analyze and modify its rules
(by transforming them into an [Abstract Syntax Tree]).
This API can then be used by [plugins] to do a lot of useful things,
e.g. to find errors automatically insert vendor prefixes.
**Support / Discussion:** [Gitter](https://gitter.im/postcss/postcss)<br>
**Twitter account:** [@postcss](https://twitter.com/postcss)<br>
**VK.com page:** [postcss](https://vk.com/postcss)<br>
**中文翻译**: [`README-cn.md`](./README-cn.md)
For PostCSS commercial support (consulting, improving the front-end culture
of your company, PostCSS plugins), contact [Evil Martians]
at <surrender@evilmartians.com>.
[Abstract Syntax Tree]: https://en.wikipedia.org/wiki/Abstract_syntax_tree
[Evil Martians]: https://evilmartians.com/?utm_source=postcss
[Autoprefixer]: https://github.com/postcss/autoprefixer
[plugins]: https://github.com/postcss/postcss#plugins
<a href="https://evilmartians.com/?utm_source=postcss">
<img src="https://evilmartians.com/badges/sponsored-by-evil-martians.svg"
alt="Sponsored by Evil Martians" width="236" height="54">
</a>
## Docs
Read **[full docs](https://github.com/postcss/postcss#readme)** on GitHub.

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{
"name": "postcss",
"version": "7.0.39",
"description": "Tool for transforming styles with JS plugins",
"engines": {
"node": ">=6.0.0"
},
"keywords": [
"css",
"postcss",
"rework",
"preprocessor",
"parser",
"source map",
"transform",
"manipulation",
"transpiler"
],
"funding": {
"type": "opencollective",
"url": "https://opencollective.com/postcss/"
},
"author": "Andrey Sitnik <andrey@sitnik.ru>",
"license": "MIT",
"homepage": "https://postcss.org/",
"repository": "postcss/postcss",
"dependencies": {
"picocolors": "^0.2.1",
"source-map": "^0.6.1"
},
"main": "lib/postcss",
"types": "lib/postcss.d.ts",
"browser": {
"./lib/terminal-highlight": false,
"fs": false
}
}

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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"
}

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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
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/*
* 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;

67
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{
"name": "postcss-custom-selectors",
"version": "5.1.2",
"description": "Use Custom Selectors in CSS",
"author": "Jonathan Neal <jonathantneal@hotmail.com>",
"contributors": [
"yisi",
"Maxime Thirouin"
],
"license": "MIT",
"repository": "postcss/postcss-custom-selectors",
"homepage": "https://github.com/postcss/postcss-custom-selectors#readme",
"bugs": "https://github.com/postcss/postcss-custom-selectors/issues",
"main": "index.cjs.js",
"module": "index.es.mjs",
"files": [
"index.cjs.js",
"index.cjs.js.map",
"index.es.mjs",
"index.es.mjs.map"
],
"scripts": {
"prepublishOnly": "npm test",
"pretest": "rollup -c .rollup.js --silent",
"test": "echo 'Running tests...'; npm run test:js && npm run test:tape",
"test:js": "eslint *.js lib/*.js --cache --ignore-path .gitignore --quiet",
"test:tape": "postcss-tape"
},
"engines": {
"node": ">=6.0.0"
},
"dependencies": {
"postcss": "^7.0.2",
"postcss-selector-parser": "^5.0.0-rc.3"
},
"devDependencies": {
"@babel/core": "^7.1.0",
"@babel/plugin-syntax-dynamic-import": "^7.0.0",
"@babel/preset-env": "^7.1.0",
"babel-eslint": "^9.0.0",
"eslint": "^5.6.0",
"eslint-config-dev": "^2.0.0",
"postcss-tape": "^2.2.0",
"pre-commit": "^1.2.2",
"rollup": "^0.66.1",
"rollup-plugin-babel": "^4.0.3"
},
"eslintConfig": {
"extends": "dev",
"parser": "babel-eslint"
},
"keywords": [
"postcss",
"css",
"postcss-plugin",
"custom",
"selectors",
"w3c",
"csswg",
"extensions",
"declarative",
"rule",
"atrule",
"at-rule",
"specification"
]
}