matches.Validator | /mod.ts | embassyd_sdk@v0.3.1.1.4

method matches.Validator.prototype.optional

Re-export

import { matches } from "https://deno.land/x/embassyd_sdk@v0.3.1.1.4/mod.ts";
const { Validator } = matches;

optional(name?: string): Parser<Optional<A>, Optional<B>>

When we want to make sure that we handle the null later on in a monoid fashion, and this ensures we deal with the value https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining

Parameters

optional

name: string

Parser<Optional<A>, Optional<B>>