R | /mod.ts | ahh@v0.10.1

Idiomatic type-safety functions.

method R.inspectErr

import { R } from "https://deno.land/x/ahh@v0.10.1/mod.ts";

inspectErr<T, E extends Error>(res: Result<T, E>, f: (_: E) => unknown): Result<T, E>

Calls f with res, and returns the original res.

Examples

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

console.log(R.inspectErr(1, () => Error("nope"))); // 1
console.log(R.inspectErr(Error(), () => Error("nope"))); // Error()

Type Parameters

E extends Error

Parameters

res: Result<T, E>

f: (_: E) => unknown

Returns

Result<T, E>