Function firstIsString

cf/src/types.js:188–192

(x)

export const END = {}

function firstIsString(x) {
  if (Array.isArray(x))
    return firstIsString(x[0])
  return typeof x === 'string' ? 1009 : 0
}

export const mergeUserTypes = function(types) {
  const user = typeHandlers(types || {})