PostCSS Nested Calc

npm install @csstools/postcss-nested-calc --save-dev

PostCSS Nested Calc lets you use nested calc() expressions following the CSS Values and Units 4 specification.

.example {
	order: calc(1 + calc(2 * 2));
}

/* becomes */

.example {
	order: calc(1 + (2 * 2));
	order: calc(1 + calc(2 * 2));
}

Add PostCSS Nested Calc to your project:

npm install postcss @csstools/postcss-nested-calc --save-dev

Use it as a PostCSS plugin:

const postcss = require('postcss');
const postcssNestedCalc = require('@csstools/postcss-nested-calc');

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

The preserve option determines whether the original notation is preserved. By default the original values are preserved.

postcssNestedCalc({ preserve: false })

.example {
	order: calc(1 + calc(2 * 2));
}

/* becomes */

.example {
	order: calc(1 + (2 * 2));
}