Mapaler

class Bin extends Set {
	static #typeError_Constructor = "传入的不是 number 和 bigint 类型或这个两个类型的数组";
	static #typeError_FlagsNum = "传入的不是 number 和 bigint 类型";
	static #typeError_FlagsArray = "传入的不是 number 类型的数组";
	static #typeError_NotInteger = "传入的不是 整数";
	static #rangeError_NotSafe = "传入的 number 大于 53 位";
	/**
	 * 构建函数
	 * @param {(number | bigint | number[])} arg 传入参数
	 */

Mapaler

/*
 * Detail: 仿照 DOMTokenList 功能实现的自定义 CustomTokenList Version2 (extends Array)
 * Reference: https://gist.github.com/dimitarnestorov/48b69a918288e9098db1aab904a2722a
 * Use:
let span = document.querySelector("span");
let _ctl = new CustomTokenList(span, "custom-token");
span.customTokenList = _ctl;
span.customTokenList.add("token1","token2");
console.log(span.getAttribute("custom-token"));
// token1 token2