productionBrowserSourceMaps

Source Maps are enabled by default during development. During production builds, they are disabled to prevent you leaking your source on the client, unless you specifically opt-in with the configuration flag.

Next.js provides a configuration flag you can use to enable browser source map generation during the production build:

module.exports = {
  productionBrowserSourceMaps: true,
}

When the productionBrowserSourceMaps option is enabled, the source maps will be output in the same directory as the JavaScript files. Next.js will automatically serve these files when requested.

• Adding source maps can increase next build time
• Increases memory usage during next build