map | /src/result/mod.ts | ahh@v0.11.0

The Deno 2 Release Candidate is here

Opinionated idiomatic type-safety functions.

function map

import { map } from "https://deno.land/x/ahh@v0.11.0/src/result/mod.ts";

map<T, U, E extends Error>(res: Result<T, E>, f: (_: T) => U): Result<U, E>

Calls f with res, and returns the result.

Examples

Example 1

import { default as R } from "./mod.ts";

console.log(R.map(1, (i) => i + 1)); // 2
console.log(R.map(Error(), (i: number) => i + 1)); // Error()

E extends Error

res: Result<T, E>

f: (_: T) => U