shift73k/assets_old/node_modules/postcss-convert-values/dist/lib/convert.js

82 lines
No EOL
1.8 KiB
JavaScript

'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = function (number, unit, { time, length, angle }) {
let value = dropLeadingZero(number) + (unit ? unit : '');
let converted;
if (length !== false && unit.toLowerCase() in lengthConv) {
converted = transform(number, unit, lengthConv);
}
if (time !== false && unit.toLowerCase() in timeConv) {
converted = transform(number, unit, timeConv);
}
if (angle !== false && unit.toLowerCase() in angleConv) {
converted = transform(number, unit, angleConv);
}
if (converted && converted.length < value.length) {
value = converted;
}
return value;
};
const lengthConv = {
in: 96,
px: 1,
pt: 4 / 3,
pc: 16
};
const timeConv = {
s: 1000,
ms: 1
};
const angleConv = {
turn: 360,
deg: 1
};
function dropLeadingZero(number) {
const value = String(number);
if (number % 1) {
if (value[0] === '0') {
return value.slice(1);
}
if (value[0] === '-' && value[1] === '0') {
return '-' + value.slice(2);
}
}
return value;
}
function transform(number, unit, conversion) {
const lowerCasedUnit = unit.toLowerCase();
let one, base;
let convertionUnits = Object.keys(conversion).filter(u => {
if (conversion[u] === 1) {
one = u;
}
return lowerCasedUnit !== u;
});
if (lowerCasedUnit === one) {
base = number / conversion[lowerCasedUnit];
} else {
base = number * conversion[lowerCasedUnit];
}
return convertionUnits.map(u => dropLeadingZero(base / conversion[u]) + u).reduce((a, b) => a.length < b.length ? a : b);
}
module.exports = exports['default'];