'use strict';export default class GL {  /**   * 構造函數   * @param {object} opt   * @param {number} opt.min 最小整數值   * @param {number} opt.max 最大整數值   * @param {Map} opt.fenpei 自定義概率    */  constructor({ min, max, fenpei = new Map() }) {    this.min = min;    this.max = max;    this.fenpei = fenpei;  }  /**   * 可分配百分比   */  get baifenbi() {    return (1 - this.peizhi) / (this.max - this.min - this.fenpei.size);  }  /**   * 配置   */  get peizhi() {    let result = 0;    for (let i of this.fenpei.values()) {      if (this.min <= i && i < this.max) result += i;    }    return result;  }  /**   * 隨機數   * @returns {number} [min,max)   */  random() {    let t = 0, r = Math.random();    for (let i = this.min; i < this.max; i++) {      this.fenpei.has(i) ? t += this.fenpei.get(i) : t += this.baifenbi;      if (t > r) return i;    }    return null;  }}let d = new GL({  min: 0,  max: 8,  fenpei: new Map([    [0, 0.5], // 數值，百分比    [22, 0.4]  ])});// 測試let count = Array(10).fill(0);for (let i = 0; i < 10000; i++) {  count[d.random()] += 1;}for (let i = 0; i < count.length; i++) {  console.log(count[i] / 10000);}