@modern-kit/utils/dist/common/hexToRgba/index.mjs

modern-kit/utils

import { repeatCharacters } from '../../string/repeatCharacters/index.mjs';

const FULL_HEX_LENGTH = 6;
const REPEAT_COUNT = 2;
const getExpandedHex = (hex) => {
  const hexString = hex.replace("#", "");
  return hexString.length === FULL_HEX_LENGTH ? hexString : repeatCharacters(hexString, REPEAT_COUNT);
};

const HEXADECIMAL = 16;
function hexToRgba(hex, alpha = 1) {
  const regex = /^#([0-9A-Fa-f]{3}|[0-9A-Fa-f]{6})$/;
  if (!regex.test(hex)) {
    return null;
  }
  const expandedHex = getExpandedHex(hex);
  const [r, g, b] = [0, 2, 4].map((offset) => {
    return parseInt(expandedHex.slice(offset, offset + 2), HEXADECIMAL);
  });
  return {
    r,
    g,
    b,
    a: alpha,
    stringifiedValue: `rgba(${r},${g},${b},${alpha})`
  };
}

export { hexToRgba };
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