This option controls if and how source maps are generated. Use the SourceMapDevToolPlugin for a more fine grained configuration. See the source-map-loader to deal with existing source maps. devtoolstring = 'eval' false Choose a style of source mapping to enhance the debugging process. These values can affect build and rebuild speed dramatically. devtoolperformanceproductionqualitycomment
![Devtool | webpack](https://cdn-ak-scissors.b.st-hatena.com/image/square/eceadfb8015bc128031bfdea6262fbbe4c918b99/height=288;version=1;width=512/https%3A%2F%2Fwebpack.js.org%2Ficon-pwa-512x512.934507c816afbcdb.png)