wxappb2b/GuangZuan/miniprogram/services/global/instance.ts

/// 单例模式
class GZShareInstance {
  /// 私有属性
  private static instance: GZShareInstance;
  private constructor() {}
  /// static的作用是把这个方法挂载在类上
  // 而不是new出来的实例上
  public static shareInstance() {
    if (!this.instance) {
      this.instance = new GZShareInstance();
    }
    return this.instance
  }
}