Skip to main content
The Deno 2 Release Candidate is here
Learn more
Module

x/fun/mod.ts>const.mapLeft

A collection of algebraic data types, lenses, and schemables based on a light weight higher kinded type implementation. Written for deno.
Go to Latest
function const.mapLeft
import { const } from "https://deno.land/x/fun@v2.0.0-alpha.6/mod.ts";
const { mapLeft } = const;

Parameters

fbj: (b: B) => J

Returns

<A = never>(tab: Const<B, A>) => Const<J, A>