37 lines
1.0 KiB
JavaScript
Executable File
37 lines
1.0 KiB
JavaScript
Executable File
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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Object.defineProperty(exports, "default", {
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enumerable: true,
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get: function() {
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return negateValue;
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}
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});
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function negateValue(value) {
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value = `${value}`;
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if (value === "0") {
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return "0";
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}
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// Flip sign of numbers
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if (/^[+-]?(\d+|\d*\.\d+)(e[+-]?\d+)?(%|\w+)?$/.test(value)) {
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return value.replace(/^[+-]?/, (sign)=>sign === "-" ? "" : "-");
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}
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// What functions we support negating numeric values for
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// var() isn't inherently a numeric function but we support it anyway
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// The trigonometric functions are omitted because you'll need to use calc(…) with them _anyway_
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// to produce generally useful results and that will be covered already
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let numericFunctions = [
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"var",
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"calc",
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"min",
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"max",
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"clamp"
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];
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for (const fn of numericFunctions){
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if (value.includes(`${fn}(`)) {
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return `calc(${value} * -1)`;
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}
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}
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}
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