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flatMap()

flatMap<A, E2, B>(f): <E1>(ma) => Either<E2 | E1, B>

Chains a function that returns an Either over the Right value.

Type Parameters​

A: A​

The original success type.

E2: E2​

The new error type.

B: B​

The new success type.

Parameters​

f: (a) => Either<E2, B>​

The chaining function.

Returns: <E1>(ma): Either<E2 | E1, B>​

A function that transforms the Either.

Since​

2.0.0