color-fns/dist/lib/parseHsl.js

Modern JavaScript color utility library.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var defaultOpts = {
    allowDecimal: true
};
function parseHsl(value, options) {
    if (options === void 0) { options = defaultOpts; }
    if (typeof value !== 'string') {
        return null;
    }
    var regex = /^hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)%\s*,\s*(\d+(?:\.\d+)?)%\s*,*\s*(\d*(?:\.\d+)*)*\)/i;
    if (!options.allowDecimal) {
        regex = /^hsla?\(\s*(\d+)\s*,\s*(\d+)%\s*,\s*(\d+)%\s*,*\s*(\d*(?:\.\d+)*)*\)/i;
    }
    // will consider hsl/hsla color prefix as a valid input color
    // while the output will be a valid web colors
    // valid input colors examples 'hsl(255, 100%, 50%, 0.5)', 'hsla(100, 100%, 50%)'
    // the output for the inputted examples 'hsla(255, 100%, 50%, 0.5)', 'hsl(100, 100%, 50%)'
    var match = value.match(regex);
    if (!match || match.length < 4) {
        return null;
    }
    return {
        alpha: typeof match[4] !== 'undefined' ? Number(match[4]) : undefined,
        hue: Number(match[1]),
        lum: Number(match[3]),
        sat: Number(match[2]),
    };
}
exports.parseHsl = parseHsl;
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