/**
 * Make an assertion that `error` is an `Error`.
 * If not then an error will be thrown.
 * An error class and a string that should be included in the
 * error message can also be asserted.
 *
 * @typeParam E The type of the error to assert.
 * @param error The error to assert.
 * @param ErrorClass The optional error class to assert.
 * @param msgMatches The optional string or RegExp to assert in the error message.
 * @param msg The optional message to display if the assertion fails.
 */
export declare function assertIsError<E extends Error = Error>(
  error: unknown,
  ErrorClass?: abstract new (...args: any[]) => E,
  msgMatches?: string | RegExp,
  msg?: string,
): asserts error is E;