Use absolute paths

Author: Timer

packages/react-scripts/config/webpack.config.dev.js

@@ -77,7 +77,7 @@ module.exports = {
     publicPath: publicPath,
     // Point sourcemap entries to original disk location
     devtoolModuleFilenameTemplate: info =>
-      path.relative(paths.appSrc, info.absoluteResourcePath),
+      path.resolve(info.absoluteResourcePath),
   },
   resolve: {
     // This allows you to set a fallback for where Webpack should look for modules.