Error: Cannot find module '@babel/core’
问题产生的原因
babel-loader和babel-core版本不对应所产生的，
- babel-loader 8.x对应babel-core 7.x
- babel-loader 7.x对应babel-core 6.x
Cannot read property 'tap' of undefined
TypeError: this.getOptions is not a function at Object.lessLoader/Loader
less-loader版本过高,下面版本配对参考
"less": "^3.11.1"
"less-loader": "^5.0.0"
