Function test

packages/tailwindcss/src/test-utils/custom-serializer.ts:10–12

(val)

export default {
  test(val) {
    return typeof val === 'string' && val.match(HIGH_PRECISION_COLOR_FUNCTION) !== null
  },
  serialize(val, config, indentation, depth, refs, printer) {
    if (typeof val !== 'string') {
      throw new Error('This was already tested in the test() callback')