flatmap

import { flatmap } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/fn_either.ts";

Chain the right result of one FnEither into another FnEither.

@example

import * as FE from "./fn_either.ts";
import { pipe } from "./fn.ts";

const result = pipe(
  FE.id<string>(),
  FE.flatmap(s => FE.right(s.length)),
)("Hello"); // Right(5)

function flatmap<A, L = unknown, J = never, I = never>(fati: (a: A) => FnEither<L, J, I>): <D = unknown, B = never>(ua: FnEither<D, B, A>) => FnEither<D & L, B | J, I>;

flatmap<A, L = unknown, J = never, I = never>(fati: (a: A) => FnEither<L, J, I>): <D = unknown, B = never>(ua: FnEither<D, B, A>) => FnEither<D & L, B | J, I>

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§Type Parameters

L = unknown

J = never

I = never

§Parameters

fati: (a: A) => FnEither<L, J, I>

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§Return Type

<D = unknown, B = never>(ua: FnEither<D, B, A>) => FnEither<D & L, B | J, I>

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