export const hexToRGBA = (hex: string) => {
  const normalizedHex = hex.startsWith('#') ? hex.slice(1) : hex;

  if (!/^([0-9A-Fa-f]{3}){1,2}$/.test(normalizedHex)) {
    throw new Error('Invalid HEX color.');
  }

  const expandedHex =
    normalizedHex.length === 3
      ? normalizedHex
          .split('')
          .map(val => val + val)
          .join('')
      : normalizedHex;

  const hexMatch = expandedHex.match(/.{2}/g);

  if (!hexMatch) {
    throw new Error('HEX parsing failed.');
  }

  return hexMatch
    .map(val => parseInt(val, 16))
    .map(val => Math.round((val / 255) * 1000) / 1000);
};