shift73k/assets_old/node_modules/csso/lib/replace/Dimension.js

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var packNumber = require('./Number').pack;
var MATH_FUNCTIONS = {
'calc': true,
'min': true,
'max': true,
'clamp': true
};
var LENGTH_UNIT = {
// absolute length units
'px': true,
'mm': true,
'cm': true,
'in': true,
'pt': true,
'pc': true,
// relative length units
'em': true,
'ex': true,
'ch': true,
'rem': true,
// viewport-percentage lengths
'vh': true,
'vw': true,
'vmin': true,
'vmax': true,
'vm': true
};
module.exports = function compressDimension(node, item) {
var value = packNumber(node.value, item);
node.value = value;
if (value === '0' && this.declaration !== null && this.atrulePrelude === null) {
var unit = node.unit.toLowerCase();
// only length values can be compressed
if (!LENGTH_UNIT.hasOwnProperty(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.hasOwnProperty(this.function.name)) {
return;
}
item.data = {
type: 'Number',
loc: node.loc,
value: value
};
}
};