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    Function orElse

    • Returns the Result if it is Ok, otherwise returns the alternative.

      Type Parameters

      Parameters

      • result: R

        The Result to check.

      • alternative: R2

        The alternative Result to return if the first is Err.

      Returns R2 | NarrowToOk<R>

      The first Result if Ok, otherwise the alternative.

      const primary = Result.ok('primary');

      const fallback = Result.ok('fallback');

      const failure = Result.err('failure');

      assert.deepStrictEqual(Result.orElse(primary, fallback), primary);

      assert.deepStrictEqual(Result.orElse(failure, fallback), fallback);

      const orElseFallback = Result.orElse(Result.ok('default'));

      assert.deepStrictEqual(
        orElseFallback(Result.err('missing')),
        Result.ok('default'),
      );

      assert.deepStrictEqual(
        orElseFallback(Result.ok('value')),
        Result.ok('value'),
      );

    • Returns the Result if it is Ok, otherwise returns the alternative.

      Type Parameters

      Parameters

      • alternative: R2

        The alternative Result to return if the first is Err.

      Returns <R extends UnknownResult>(result: R) => R2 | NarrowToOk<R>

      The first Result if Ok, otherwise the alternative.

      const primary = Result.ok('primary');

      const fallback = Result.ok('fallback');

      const failure = Result.err('failure');

      assert.deepStrictEqual(Result.orElse(primary, fallback), primary);

      assert.deepStrictEqual(Result.orElse(failure, fallback), fallback);

      const orElseFallback = Result.orElse(Result.ok('default'));

      assert.deepStrictEqual(
        orElseFallback(Result.err('missing')),
        Result.ok('default'),
      );

      assert.deepStrictEqual(
        orElseFallback(Result.ok('value')),
        Result.ok('value'),
      );

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