63 lines
1.5 KiB
JavaScript
Vendored
63 lines
1.5 KiB
JavaScript
Vendored
var packNumber = require('./Number').pack;
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var MATH_FUNCTIONS = {
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'calc': true,
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'min': true,
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'max': true,
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'clamp': true
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};
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var LENGTH_UNIT = {
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// absolute length units
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'px': true,
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'mm': true,
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'cm': true,
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'in': true,
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'pt': true,
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'pc': true,
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// relative length units
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'em': true,
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'ex': true,
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'ch': true,
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'rem': true,
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// viewport-percentage lengths
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'vh': true,
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'vw': true,
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'vmin': true,
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'vmax': true,
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'vm': true
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};
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module.exports = function compressDimension(node, item) {
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var value = packNumber(node.value, item);
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node.value = value;
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if (value === '0' && this.declaration !== null && this.atrulePrelude === null) {
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var unit = node.unit.toLowerCase();
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// only length values can be compressed
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if (!LENGTH_UNIT.hasOwnProperty(unit)) {
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return;
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}
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// issue #362: shouldn't remove unit in -ms-flex since it breaks flex in IE10/11
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// issue #200: shouldn't remove unit in flex since it breaks flex in IE10/11
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if (this.declaration.property === '-ms-flex' ||
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this.declaration.property === 'flex') {
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return;
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}
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// issue #222: don't remove units inside calc
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if (this.function && MATH_FUNCTIONS.hasOwnProperty(this.function.name)) {
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return;
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}
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item.data = {
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type: 'Number',
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loc: node.loc,
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value: value
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};
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}
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};
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