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84 lines
1.8 KiB
84 lines
1.8 KiB
[](https://travis-ci.org/css-modules/icss-utils)
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# ICSS Utils
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## replaceSymbols
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Governs the way tokens are searched & replaced during the linking stage of ICSS loading.
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This is broken into its own module in case the behaviour needs to be replicated in other PostCSS plugins
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(i.e. [CSS Modules Values](https://github.com/css-modules/postcss-modules-values))
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```js
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import { replaceSymbols, replaceValueSymbols } from "icss-utils";
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replaceSymbols(css, replacements);
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replaceValueSymbols(string, replacements);
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```
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Where:
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- `css` is the PostCSS tree you're working with
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- `replacements` is an JS object of `symbol: "replacement"` pairs, where all occurrences of `symbol` are replaced with `replacement`.
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A symbol is a string of alphanumeric, `-` or `_` characters. A replacement can be any string. They are replaced in the following places:
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- In the value of a declaration, i.e. `color: my_symbol;` or `box-shadow: 0 0 blur spread shadow-color`
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- In a media expression i.e. `@media small {}` or `@media screen and not-large {}`
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## extractICSS(css, removeRules = true)
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Extracts and remove (if removeRules is equal true) from PostCSS tree `:import` and `:export` statements.
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```js
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import postcss from "postcss";
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import { extractICSS } from "icss-utils";
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const css = postcss.parse(`
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:import(colors) {
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a: b;
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}
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:export {
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c: d;
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}
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`);
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extractICSS(css);
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/*
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{
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icssImports: {
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colors: {
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a: 'b'
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}
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},
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icssExports: {
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c: 'd'
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}
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}
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*/
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```
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## createICSSRules(icssImports, icssExports)
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Converts icss imports and exports definitions to postcss ast
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```js
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createICSSRules(
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{
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colors: {
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a: "b"
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}
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},
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{
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c: "d"
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}
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);
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```
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## License
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ISC
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---
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Glen Maddern, Bogdan Chadkin and Evilebottnawi 2015-present.
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