import { packNumber } from './Number.js'; const MATH_FUNCTIONS = new Set([ 'calc', 'min', 'max', 'clamp' ]); const LENGTH_UNIT = new Set([ // absolute length units 'px', 'mm', 'cm', 'in', 'pt', 'pc', // relative length units 'em', 'ex', 'ch', 'rem', // viewport-percentage lengths 'vh', 'vw', 'vmin', 'vmax', 'vm' ]); export default function compressDimension(node, item) { const value = packNumber(node.value); node.value = value; if (value === '0' && this.declaration !== null && this.atrulePrelude === null) { const unit = node.unit.toLowerCase(); // only length values can be compressed if (!LENGTH_UNIT.has(unit)) { return; } // issue #362: shouldn't remove unit in -ms-flex since it breaks flex in IE10/11 // issue #200: shouldn't remove unit in flex since it breaks flex in IE10/11 if (this.declaration.property === '-ms-flex' || this.declaration.property === 'flex') { return; } // issue #222: don't remove units inside calc if (this.function && MATH_FUNCTIONS.has(this.function.name)) { return; } item.data = { type: 'Number', loc: node.loc, value }; } };