Function typeofThenCheckSymbol

packages/bench/instanceof.ts:25–25

(x: any)

const keyin = (x: any) => typeof x === "object" && x && ZOD_FAILURE in x;
// const typeofObject = (x: any) => typeof x === "object";
const typeofThenCheckSymbol = (x: any) => typeof x === "object" && x?.[ZOD_FAILURE]; // 1.69
const typeofThenCheckTag = (x: any) => typeof x === "object" && x?.tag === ZOD_FAILURE; // 1.69
const instanceofObjectThenCheckSymbol = (x: any) => x instanceof Object && x[ZOD_FAILURE]; // 1.69
const instanceofObjectThenCheckTag = (x: any) => x instanceof Object && x.tag === ZOD_FAILURE; // 1.69