Make it under an experimental flag

vercel · Feb 24, 2022 · dafe3ea · dafe3ea
1 parent ea1dccd
commit dafe3ea
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Showing 3 changed files with 4 additions and 1 deletion.
diff --git a/packages/next/build/webpack-config.ts b/packages/next/build/webpack-config.ts
@@ -1274,6 +1274,7 @@ export default async function getBaseWebpackConfig(
     },
     plugins: [
       ...getMiddlewareSourceMapPlugins({
+        isConfigured: !!config.experimental.middlewareSourceMaps,
         isProductionBrowserSourceMapsOn: config.productionBrowserSourceMaps,
       }),
       hasReactRefresh && new ReactRefreshWebpackPlugin(webpack),

diff --git a/packages/next/build/webpack/plugins/middleware-source-maps-plugin.ts b/packages/next/build/webpack/plugins/middleware-source-maps-plugin.ts
@@ -8,9 +8,10 @@ import type { webpack5 } from 'next/dist/compiled/webpack/webpack'
  * are emitted.
  */
 export const getMiddlewareSourceMapPlugins = (params: {
+  isConfigured: boolean
   isProductionBrowserSourceMapsOn: boolean
 }) => {
-  if (params.isProductionBrowserSourceMapsOn) {
+  if (!params.isConfigured || params.isProductionBrowserSourceMapsOn) {
     return []
   }
 

diff --git a/packages/next/server/config-shared.ts b/packages/next/server/config-shared.ts
@@ -106,6 +106,7 @@ export interface ExperimentalConfig {
   urlImports?: NonNullable<webpack5.Configuration['experiments']>['buildHttp']
   outputFileTracingRoot?: string
   outputStandalone?: boolean
+  middlewareSourceMaps?: boolean
 }
 
 /**