orElseW()

orElseW<E1, E2, B>(onLeft): <A>(ma) => Either<E2, B | A>

Recovers from a Left by applying a function with widened error type.

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Type Parameters

E1: E1

The original error type.

E2: E2

The new error type.

B: B

The new success type.

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Parameters

onLeft: (e) => Either<E2, B>

Handler for Left case.

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Returns: <A>(ma): Either<E2, B | A>

A function that transforms the Either.

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Since

2.0.0