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