Find if a code is a ESM Module or a CommonJS Script or Module

isESCode.cjs

const checkEsm = import("check-esm");
let isesm = checkEsm._isESCode("./isESCode.mjs");
console.log(isesm);

isESCode.js

const checkEsm = require("check-esm");
let isesm = checkEsm._isESCode("./isESCode.cjs");
console.log(isesm);

isESCode.mjs

import { _isESCode } from "check-esm";
let isesm = _isESCode("./isESCode.js");
console.log(isesm);