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PostCSS Nested Calc 
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));
}
Usage
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 */);
PostCSS Nested Calc runs in all Node environments, with special instructions for:
| Node | PostCSS CLI | Webpack | Create React App | Gulp | Grunt |
|---|
Options
preserve
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));
}