webpack是单线程

是的，webpack是单线程模型的。这意味着webpack需要按照顺序一个一个地处理任务，并且不能同时处理多个任务。这是由于webpack是运行在Node.js之上的，而Node.js是单线程的。因此，为了提高打包效率，可以使用Happypack来将任务分发给子进程去执行，然后再由主线程解析执行结果，从而实现多线程打包进程。这样，webpack就能够发挥多核CPU电脑的威力，提高打包速度。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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