CSS Variables polyfill
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README.md

CSS Variables

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A pure regexp-replace version of rework-vars. Differences are:

  • It doesn't use rework or parse the CSS AST
  • It does not remove variable declarations
  • It is much less robust
  • It does not throw error messages

Like rework-vars, it only implements a subset of CSS variables.

API

var variables = require('variables')

css = variables(css)

Do CSS variables magic.

map = variables.parse([map])

Parse CSS variables on :root, storing the variable values in map. Variable names do not include the leading --s.

re = variables.compile(map)

Compile a regular expression for matching var(--<name>)s with names given from map. This regular expression do not match var()s with fallbacks.

css = variables.replace(css, map)

Replace variables in css with a variable map.