Function isBuiltin

packages/core/src/utils/is.ts:36–38

* Checks whether given value is an instance of the given built-in class. * * @param wat The value to be checked * @param className * @returns A boolean representing the result.

(wat: unknown, className: string)

 * @returns A boolean representing the result.
 */
function isBuiltin(wat: unknown, className: string): boolean {
  return objectToString.call(wat) === `[object ${className}]`;
}

/**
 * Checks whether given value's type is ErrorEvent