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Module

x/fun/mod.ts>either.fromPredicate

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

Type Parameters

E
A
B extends A

Parameters

refinement: Refinement<A, B>
onFalse: (a: A) => E

Returns

(a: A) => Either<E, B>