62 lines
1.9 KiB
Markdown
62 lines
1.9 KiB
Markdown
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# Media Query List Parser
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[<img alt="npm version" src="https://img.shields.io/npm/v/@csstools/media-query-list-parser.svg" height="20">][npm-url]
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[<img alt="Build Status" src="https://github.com/csstools/postcss-plugins/workflows/test/badge.svg" height="20">][cli-url]
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[<img alt="Discord" src="https://shields.io/badge/Discord-5865F2?logo=discord&logoColor=white">][discord]
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Implemented from : https://www.w3.org/TR/mediaqueries-5/
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## Usage
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Add [Media Query List Parser] to your project:
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```bash
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npm install @csstools/media-query-list-parser @csstools/css-parser-algorithms @csstools/css-tokenizer --save-dev
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```
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[Media Query List Parser] depends on our CSS tokenizer and parser algorithms.
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It must be used together with `@csstools/css-tokenizer` and `@csstools/css-parser-algorithms`.
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```ts
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import { parse } from '@csstools/media-query-list-parser';
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export function parseCustomMedia() {
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const mediaQueryList = parse('screen and (min-width: 300px), (50px < height < 30vw)');
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mediaQueryList.forEach((mediaQuery) => {
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mediaQuery.walk((entry, index) => {
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// Index of the current Node in `parent`.
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console.log(index);
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// Type of `parent`.
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console.log(entry.parent.type);
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// Type of `node`
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{
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// Sometimes nodes can be arrays.
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if (Array.isArray(entry.node)) {
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entry.node.forEach((item) => {
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console.log(item.type);
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});
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}
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if ('type' in entry.node) {
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console.log(entry.node.type);
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}
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}
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// stringified version of the current node.
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console.log(entry.node.toString());
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// Return `false` to stop the walker.
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return false;
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});
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});
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}
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```
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[cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
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[discord]: https://discord.gg/bUadyRwkJS
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[npm-url]: https://www.npmjs.com/package/@csstools/media-query-list-parser
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[Media Query List Parser]: https://github.com/csstools/postcss-plugins/tree/main/packages/media-query-list-parser
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