@taiga-ui/cdk/esm2022/utils/color/hex-to-rgba.mjs

Base library for creating Angular components and applications using Taiga UI principles regarding of actual visual appearance

const getChunksFromString = (hex, chunkSize) => hex.match(new RegExp(`.{${chunkSize}}`, 'g'));
const convertHexUnitTo256 = (hexStr) => parseInt(hexStr.repeat(2 / hexStr.length), 16);
const getAlphaFloat = (a, alpha) => {
    if (a !== undefined) {
        return Number((a / 255).toFixed(2));
    }
    if (typeof alpha !== 'number' || alpha < 0 || alpha > 1) {
        return 1;
    }
    return alpha;
};
export function tuiHexToRGBA(hex, alpha) {
    const [r, g, b, a] = tuiParseHex(hex, alpha);
    return a < 1 ? `rgba(${r}, ${g}, ${b}, ${a})` : `rgb(${r}, ${g}, ${b})`;
}
export function tuiIsValidHex(hex) {
    return /^#([A-Fa-f0-9]{3,4}){1,2}$/.test(hex);
}
export function tuiParseHex(hex, alpha) {
    if (!tuiIsValidHex(hex)) {
        throw new Error('Invalid HEX');
    }
    const chunkSize = Math.floor((hex.length - 1) / 3);
    const hexArr = getChunksFromString(hex.slice(1), chunkSize);
    const [r = NaN, g = NaN, b = NaN, a] = hexArr?.map(convertHexUnitTo256) ?? [];
    const floatAlpha = getAlphaFloat(a, alpha);
    return [r, g, b, floatAlpha];
}
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