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It should be noted that the main application scenario of CommonJS specification is server-side programming, so the strategy of loading modules synchronously is adopted. If we rely on three modules, the code will load them one by one.Let's go on to discuss design patterns. In the previous article, I finished five creative patterns. At the beginning of this chapter, I will talk about the following seven structural patterns: adapter pattern, decoration pattern, agent pattern, appearance pattern, bridging pattern, combination pattern and meta-sharing pattern. The adapter pattern of the object is the origin of various patterns. Let's look at the following figure:殊不知她这一刻心无旁骛，神思凝聚，盯着就近凑手的穴位，顺势刺出。一个30多岁的年轻人在来到后经历了一系列的挣扎，因为他昏迷了16年。鲍勃是一个超人特工，他惩恶扬善，深受街坊邻里的爱戴。“不可思议”先生就是他的光荣外号。他和另一个超人特工“弹力女超人”相爱，两人结婚后过上平静的生活。15年过去了，鲍勃已经像普通人一样生活，当上了保险公司的理赔员。然而他心中还是有着技痒之时。当他知道有发明家要展开攻击超人特工队、毁灭人类的计划，鲍勃终于按捺不住了。他要重出江湖，挽救人类护卫地球。但中年的超人已经大腹便便，他和敌人的斗争充满了悬念。鲍勃的妻子也跟丈夫一起投入到这场艰巨的战争中。他和胖子商议了好一阵，也不得主意。Returning to the section on storing events with transactions above, the putListener method called here