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# CSS Modules: css-selector-tokenizer [](https://travis-ci.org/css-modules/css-selector-tokenizer) [](https://coveralls.io/r/css-modules/css-selector-tokenizer?branch=master) [](https://codecov.io/github/css-modules/css-selector-tokenizer?branch=master) Parses and stringifies CSS selectors. ``` js import Tokenizer from "css-selector-tokenizer"; let input = "a#content.active > div::first-line [data-content], a:not(:visited)"; Tokenizer.parse(input); // === expected let expected = { type: "selectors", nodes: [ { type: "selector", nodes: [ { type: "element", name: "a" }, { type: "id", name: "content" }, { type: "class", name: "active" }, { type: "operator", operator: ">", before: " ", after: " " }, { type: "element", name: "div" }, { type: "pseudo-element", name: "first-line" }, { type: "spacing", value: " " }, { type: "attribute", content: "data-content" }, ] }, { type: "selector", nodes: [ { type: "element", name: "a" }, { type: "nested-pseudo-class", name: "not", nodes: [ { type: "selector", nodes: [ { type: "pseudo-class", name: "visited" } ] } ] } ], before: " " } ] } Tokenizer.stringify(expected) // === input // * => { type: "universal" } // foo|element = { type: "element", name: "element", namespace: "foo" } // *|* = { type: "universal", namespace: "*" } // :has(h1, h2) => { type: "nested-pseudo-class", name: "has", nodes: [ // { // type: "selector", // nodes: [ // { type: "element", name: "h1" } // ] // }, // { // type: "selector", // nodes: [ // { type: "element", name: "h2" } // ], // before: " " // } // ] } ``` ## Building ``` npm install npm test ``` ## Development - `npm test -- -w` will watch `lib` and `test` for changes and retest ## License MIT ## With thanks - Mark Dalgleish - Glen Maddern - Guy Bedford --- Tobias Koppers, 2015.