just use the whole_app_module_graph

Author: lukesandberg

crates/next-core/src/next_config.rs

@@ -876,7 +876,7 @@ pub struct ExperimentalConfig {
     turbopack_tree_shaking: Option<bool>,
     turbopack_scope_hoisting: Option<bool>,
     turbopack_use_system_tls_certs: Option<bool>,
-    turbopack_use_production_chunking_in_dev: Option<bool>,
+    turbopack_use_whole_app_module_graph_in_dev: Option<bool>,
     /// Disable automatic configuration of the sass loader.
     #[serde(default)]
     turbopack_use_builtin_sass: Option<bool>,
@@ -1823,7 +1823,7 @@ impl NextConfig {
             // module graph as well.
             NextMode::Development => self
                 .experimental
-                .turbopack_use_production_chunking_in_dev
+                .turbopack_use_whole_app_module_graph_in_dev
                 .unwrap_or(true),
             NextMode::Build => true,
         }))
@@ -1832,17 +1832,7 @@ impl NextConfig {
     #[turbo_tasks::function]
     pub async fn turbo_chunking_style(&self, mode: Vc<NextMode>) -> Result<Vc<ChunkingStyle>> {
         Ok(match *mode.await? {
-            NextMode::Development => {
-                if self
-                    .experimental
-                    .turbopack_use_production_chunking_in_dev
-                    .unwrap_or(true)
-                {
-                    ChunkingStyle::production()
-                } else {
-                    ChunkingStyle::development()
-                }
-            }
+            NextMode::Development => ChunkingStyle::development(),
             NextMode::Build => ChunkingStyle::production(),
         })
     }

packages/next/src/server/config-schema.ts

@@ -475,7 +475,7 @@ export const configSchema: zod.ZodType<NextConfig> = z.lazy(() =>
         turbopackUseSystemTlsCerts: z.boolean().optional(),
         turbopackUseBuiltinBabel: z.boolean().optional(),
         turbopackUseBuiltinSass: z.boolean().optional(),
-        turbopackUseProductionChunkingInDev: z.boolean().optional(),
+        turbopackUseWholeAppModuleGraphInDev: z.boolean().optional(),
         optimizePackageImports: z.array(z.string()).optional(),
         optimizeServerReact: z.boolean().optional(),
         clientTraceMetadata: z.array(z.string()).optional(),

packages/next/src/server/config-shared.ts

@@ -654,9 +654,10 @@ export interface ExperimentalConfig {
   turbopackUseBuiltinSass?: boolean
 
   /**
-   * Whether to use production chunking in development mode. This makes development mode chunking more like production but may come with an HMR performance regression.
+   * Whether to compute the whole app module graph in development mode. This may reduce memory usage
+   * by enabling more sharing of chunking decisions across routes.
    */
-  turbopackUseProductionChunkingInDev?: boolean
+  turbopackUseWholeAppModuleGraphInDev?: boolean
 
   /**
    * For use with `@next/mdx`. Compile MDX files using the new Rust compiler.

test/development/acceptance/fixtures/component-stack/next.config.js

@@ -1,5 +1,5 @@
 module.exports = {
   experimental: {
-    turbopackUseProductionChunkingInDev: true,
+    turbopackUseWholeAppModuleGraphInDev: true,
   },
 }

test/development/acceptance/fixtures/default-template/next.config.js

@@ -1,5 +1,5 @@
 module.exports = {
   experimental: {
-    turbopackUseProductionChunkingInDev: true,
+    turbopackUseWholeAppModuleGraphInDev: true,
   },
 }

turbopack/crates/turbopack-core/src/chunk/chunking_context.rs

@@ -154,6 +154,7 @@ pub struct ChunkingConfigs(FxHashMap<ResolvedVc<Box<dyn ChunkType>>, ChunkingCon
 pub trait ChunkingContext {
     #[turbo_tasks::function]
     fn name(self: Vc<Self>) -> Vc<RcStr>;
+    /// Whether to use file URIs in source maps.
     #[turbo_tasks::function]
     fn should_use_file_source_map_uris(self: Vc<Self>) -> Vc<bool>;
     /// The root path of the project