Extend hex color

Giovanny Gongora

Extends a 3-digit color code to a 6-digit color code.

const extendHex = (shortHex: string) =>
  '#' +
  shortHex
    .slice(shortHex.startsWith('#') ? 1 : 0)
    .split('')
    .map(x => x + x)
    .join('');