Method map

src/common/result.ts:131–134

(fn: (value: T) => U)

  }

  map<U>(fn: (value: T) => U): Result<U> {
    if (this.ok) return Result.ok(fn(this.value as T));
    return Result.err(this.error as string);
  }

  /** Useful for debugging, e.g.
   * ```typescript