PostCSS Font Width Property

npm install @csstools/postcss-font-width-property --save-dev

PostCSS Font Width Property lets you use the font-width property and descriptor follow the CSS Fonts Specification.

@font-face {
    src: url("foo.ttf");
    font-family: "foo";
    font-style: normal;
    font-width: 1% 1000%;
}

.foo {
    font-width: 50%;
}

/* becomes */

@font-face {
    src: url("foo.ttf");
    font-family: "foo";
    font-style: normal;
    font-stretch: 1% 1000%;
}

.foo {
    font-stretch: 50%;
}

Usage

Add PostCSS Font Width Property to your project:

npm install postcss @csstools/postcss-font-width-property --save-dev

Use it as a PostCSS plugin:

const postcss = require('postcss');
const postcssFontWidthProperty = require('@csstools/postcss-font-width-property');

postcss([
    postcssFontWidthProperty(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);

Options

preserve

The preserve option determines whether the original notation is preserved. By default, it is not preserved.

postcssFontWidthProperty({ preserve: true })

@font-face {
    src: url("foo.ttf");
    font-family: "foo";
    font-style: normal;
    font-width: 1% 1000%;
}

.foo {
    font-width: 50%;
}

/* becomes */

@font-face {
    src: url("foo.ttf");
    font-family: "foo";
    font-style: normal;
    font-stretch: 1% 1000%;
    font-width: 1% 1000%;
}

.foo {
    font-stretch: 50%;
    font-width: 50%;
}