remap-css

Remap CSS rules based on declaration value

npm i remap-css

const remapCss = require("remap-css");
const css = await remapCss([{css: "a {color: red;}"}], {"color: red": "color: blue"});
// a {
//   color: blue;
// }

Returns a Promise that resolves to a CSS string.

• sources: Array Array of sources
  • source: Object
    • css: string A CSS string
    • prefix: string A CSS selector to be prefixed to all output rules
    • match: string A array of plain CSS selectors that prevent a prefix addition on exact match
• mappings: Object CSS declaration value-to-value mapping. The key is either a exact match CSS declaration or a special rule starting with $. The value is the corresponding replacement declaration or a color in the case of a special rule.
• options: Object
  • indentDeclaration: number Numbers of spaces to indent declarations. Default: 2.
  • indentCss: number Numbers of spaces to indent the output CSS. Default: 0.
  • lineLength: number Number of characters after which to wrap lines. Default: 80.
  • ignoreSelectors: Array of RegExp Regular expressions of selectors to ignore. Default: [].
  • limitSpecial: number Maximum amount of iteration per special mappings. Default: 25.
  • deviceType: string CSS media query device type to match. Default: "screen".
  • deviceWidth: "string" CSS media query device width to match. Default: "1024px".
  • comments: boolean Whether to output comments. Default: false.
  • stylistic: boolean Whether to perform stylistic tweaks on selectors. Default: false.
  • order: string Ordering of the output CSS rules. Either mappings or source. Default: "mappings".
  • combine: boolean Whether to combine CSS rules with the same declarations. Default: true.

There are special mapping keys supported to reduce the need for similar border and background rules:

• $border: value: Variations of border-colors
• $background: value Variations of background-colors

On special rules, only specify the replacement value alone (not the declaration).

• fetch-css - Extract CSS from websites and browser extensions

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