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Module

x/hkts/these.ts>isLeft

Functional programming tools: option, either, task, state, optics, etc.
Latest
variable isLeft
import { isLeft } from "https://deno.land/x/hkts@v0.0.52/these.ts";

Guards


type

<L, R>(m: These<L, R>) => m is E.Left<L>