/* eslint-disable no-var */
declare global {
	// eslint-disable-next-line @typescript-eslint/no-unused-vars
	interface ReadonlyArray<T> {
		includes<S, R extends `${Extract<S, string>}`>(
			this: ReadonlyArray<R>,
			searchElement: S,
			fromIndex?: number
		): searchElement is R & S;
	}
}

export {};