前言
项目里使用webpack的代码混淆工具 webpack-obfuscator，当打包代码时，出现如下报错：
TypeError: Cannot read property 'tap' of undefined
原因
项目的webpack版是4.x ，而 webpack-obfuscator 的版本是 3.x
解决方法
查阅资料 在该 https://nodejs7.com/2021/11/27/797.html 文章里指出了版本对应，把项目里的 webpack-obfuscator 版本调低安装 2.x 版本后，打包代码不报错了。
- TypeError undefined property webpack Cannottypeerror undefined property cannot typeerror undefined property webpack properties typeerror undefined reading properties typeerror undefined uncaught properties undefined reading cannot properties typeerror reading cannot typeerror non-mysql undefined property typeerror undefined property upgrade typeerror undefined uncaught property quot properties typeerror undefined