Either | /index.ts | monads@v0.5.10

interface Either

import { type Either } from "https://deno.land/x/monads@v0.5.10/index.ts";

Type Parameters

type: symbol

isLeft(): boolean

isRight(): boolean

left(): Option<L>

leftAndThen(fn: (val: L) => Either<U, R>): Either<U, R>

right(): Option<R>

rightAndThen(fn: (val: R) => Either<L, U>): Either<L, U>

unwrap(): L | R

unwrapLeft(): L | never

unwrapLeftOr(other: L): L

unwrapLeftOrElse(fn: (right: R) => L): L

unwrapRight(): R | never

unwrapRightOr(other: R): R

unwrapRightOrElse(fn: (left: L) => R): R

match(fn: Match<L, R, U>): U

map(fn: (val: L | R) => U): Either<U, U>

mapLeft(fn: (left: L) => U): Either<U, R>

mapRight(fn: (right: R) => U): Either<L, U>