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rework-calc Build Status

A Rework plugin to support calc(). Particularly useful with the rework-vars

Installation

npm install rework-calc

Use

As a Rework plugin:

var rework = require('rework');
var calc = require('rework-calc');

var css = rework(cssString).use(calc).toString();

Supported feature

This simply add calc() support, a feature to do simple calculations. This can be particularly useful with the rework-vars plugin.

Note: When multiple units are mixed together in the same expression, the calc() statement is left as is, to fallback to the CSS3 calc feature.

Example (with rework-vars enabled as well):

:root {
  --main-font-size: 16px;
}

body {
  font-size: var(--main-font-size);
}

h1 {
  font-size: calc(var(--main-font-size) * 2);
  height: calc(100px - 2em);
}

yields:

body {
  font-size: 16px
}

h1 {
  font-size: 32px;
  height: calc(100px - 2em)
}

See unit tests for another example.

Unit tests

Make sure the dev-dependencies are installed, and then run:

npm test

License

MIT

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A calc() plugin for Rework

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