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

39 lines
1.1 KiB
JavaScript

var OMIT_PLUSSIGN = /^(?:\+|(-))?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/;
var KEEP_PLUSSIGN = /^([\+\-])?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/;
var unsafeToRemovePlusSignAfter = {
Dimension: true,
Hash: true,
Identifier: true,
Number: true,
Raw: true,
UnicodeRange: true
};
function packNumber(value, item) {
// omit plus sign only if no prev or prev is safe type
var regexp = item && item.prev !== null && unsafeToRemovePlusSignAfter.hasOwnProperty(item.prev.data.type)
? KEEP_PLUSSIGN
: OMIT_PLUSSIGN;
// 100 -> '100'
// 00100 -> '100'
// +100 -> '100' (only when safe, e.g. omitting plus sign for 1px+1px leads to single dimension instead of two)
// -100 -> '-100'
// 0.123 -> '.123'
// 0.12300 -> '.123'
// 0.0 -> ''
// 0 -> ''
// -0 -> '-'
value = String(value).replace(regexp, '$1$2$3');
if (value === '' || value === '-') {
value = '0';
}
return value;
}
module.exports = function(node, item) {
node.value = packNumber(node.value, item);
};
module.exports.pack = packNumber;