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1 | # postcss-selector-parser [![Build Status](https://travis-ci.org/postcss/postcss-selector-parser.svg?branch=master)](https://travis-ci.org/postcss/postcss-selector-parser)
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2 |
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3 | > Selector parser with built in methods for working with selector strings.
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4 |
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5 | ## Install
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6 |
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7 | With [npm](https://npmjs.com/package/postcss-selector-parser) do:
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8 |
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9 | ```
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10 | npm install postcss-selector-parser
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11 | ```
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12 |
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13 | ## Quick Start
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14 |
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15 | ```js
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16 | const parser = require('postcss-selector-parser');
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17 | const transform = selectors => {
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18 | selectors.walk(selector => {
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19 | // do something with the selector
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20 | console.log(String(selector))
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21 | });
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22 | };
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23 |
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24 | const transformed = parser(transform).processSync('h1, h2, h3');
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25 | ```
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26 |
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27 | To normalize selector whitespace:
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28 |
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29 | ```js
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30 | const parser = require('postcss-selector-parser');
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31 | const normalized = parser().processSync('h1, h2, h3', {lossless: false});
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32 | // -> h1,h2,h3
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33 | ```
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34 |
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35 | Async support is provided through `parser.process` and will resolve a Promise
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36 | with the resulting selector string.
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37 |
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38 | ## API
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39 |
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40 | Please see [API.md](API.md).
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41 |
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42 | ## Credits
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43 |
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44 | * Huge thanks to Andrey Sitnik (@ai) for work on PostCSS which helped
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45 | accelerate this module's development.
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46 |
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47 | ## License
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48 |
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49 | MIT
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