Today I Learned

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Debugging With Full Source Maps From Webpack

After Webpack runs your JavaScript through various loaders, it no longer looks like the code you were writing in your editor. This can make debugging difficult when you inspect the source of an error in the browser’s devtools. Fortunately, Webpack makes it easy to enhance debugging with full source maps of your code. Just add the following option to your Webpack config:

{
  devtool: "source-map",
  ...
}

This will generate a full source map with a filename that is something like bundle.js.map.

Note: this will slow down the webpack build process a bit.

Read more about the devtool configuration and all the possible options in the Webpack docs.