export class Ok<T> {
	#inner: T;

	constructor(inner: T) {
		this.#inner = inner;
	}

	get inner(): T {
		return this.#inner;
	}

	/**
	 * Type guard for `Ok`
	 * @returns `true` if `Ok`; `false` if `Err`
	 */
	isOk(): this is Ok<T> {
		return true;
	}

	/**
	 * Type guard for `Err`
	 * @returns `true` if `Err`; `false` if `Ok`
	 */
	isErr(): false {
		return false;
	}

	/**
	 * Create an `Ok`
	 * @param inner
	 * @returns `Ok(inner)`
	 */
	static new<T>(inner: T): Ok<T> {
		return new Ok<T>(inner);
	}

	/**
	 * Create an empty `Ok`
	 * @returns `Ok(void)`
	 */
	static void(): Ok<void> {
		return new Ok(undefined);
	}
}