type A = {
  +function: string,
  +void: ?boolean,
  +typeof: ?boolean,
  +with: string,
  +enum: string,
  +default: string,
  +new: string,
};
type B = {
  readonly function: string,
  readonly void: ?boolean,
  readonly typeof: ?boolean,
  readonly with: string,
  readonly enum: string,
  readonly default: string,
  readonly new: string,
};
