Hi there! Are you looking for the official Deno documentation? Try docs.deno.com for all your Deno learning needs.

instanceof

import { instanceof } from "https://esm.sh/zod@3.25.76/index.d.cts";

const instanceof: <T extends Class>(cls: T, params?: CustomParams) => ZodType<InstanceType<T>, ZodTypeDef, InstanceType<T>>;