R | /mod.ts | ahh@v0.10.0

Idiomatic type-safety structures for TypeScript.

method R.unwrap

import { R } from "https://deno.land/x/ahh@v0.10.0/mod.ts";

unwrap<T, E extends Error>(res: Result<T, E>): res extends Ok<T> ? T : never

Returns res if it is an Ok, or throws.

Examples

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

console.log(R.unwrap(1)); // 1
R.unwrap(Error()); // throws

E extends Error

res: Result<T, E>

res extends Ok<T> ? T : never