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tap()

tap<E1, A, E2>(self, f): Either<E1 | E2, A>

Executes a side effect on the Right value and returns the original Either.

Type Parameters​

E1: E1​

The original error type.

A: A​

The success type.

E2: E2​

The side effect error type.

Parameters​

self: Either<E1, A>​

The Either to tap.

f: (a) => Either<E2, unknown>​

The side effect function.

Returns: Either<E1 | E2, A>​

The original Either.

Since​

2.0.0