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Currently we ship dev runtimes (with things like HMR logic) along with code for loading chunks. This separates them and allows us to include a minimal runtime for builds. Test Plan: `TURBOPACK=1 TURBOPACK_BUILD=1 pnpm build` on an app with a `middleware.ts` and verified it loads when started.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| const moduleCache: ModuleCache<BaseModule> = {}; | ||
|
|
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| /** | ||
| * Gets or instantiates a runtime module. | ||
| */ | ||
| // @ts-ignore | ||
| // eslint-disable-next-line @typescript-eslint/no-unused-vars | ||
| function getOrInstantiateRuntimeModule( | ||
| moduleId: ModuleId, | ||
| chunkPath: ChunkPath, | ||
| ): BaseModule { | ||
| const module = moduleCache[moduleId]; | ||
| if (module) { | ||
| if (module.error) { | ||
| throw module.error; | ||
| } | ||
| return module; | ||
| } | ||
|
|
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| return instantiateModule(moduleId, { type: SourceType.Runtime, chunkPath }); | ||
| } | ||
|
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| /** | ||
| * Retrieves a module from the cache, or instantiate it if it is not cached. | ||
| */ | ||
| // @ts-ignore | ||
| const getOrInstantiateModuleFromParent: GetOrInstantiateModuleFromParent = ( | ||
| id, | ||
| sourceModule | ||
| ) => { | ||
| const module = moduleCache[id]; | ||
|
|
||
| if (sourceModule.children.indexOf(id) === -1) { | ||
| sourceModule.children.push(id); | ||
| } | ||
|
|
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| if (module) { | ||
| if (module.parents.indexOf(sourceModule.id) === -1) { | ||
| module.parents.push(sourceModule.id); | ||
| } | ||
|
|
||
| return module; | ||
| } | ||
|
|
||
| return instantiateModule(id, { | ||
| type: SourceType.Parent, | ||
| parentId: sourceModule.id, | ||
| }); | ||
| }; | ||
|
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||
|
|
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| // globalThis.getOrInstantiateRuntimeModule = getOrInstantiateRuntimeModule; | ||
|
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| // eslint-disable-next-line @typescript-eslint/no-unused-vars | ||
| function instantiateModule(id: ModuleId, source: SourceInfo): BaseModule { | ||
| debugger; | ||
| const moduleFactory = moduleFactories[id]; | ||
| if (typeof moduleFactory !== "function") { | ||
| // This can happen if modules incorrectly handle HMR disposes/updates, | ||
| // e.g. when they keep a `setTimeout` around which still executes old code | ||
| // and contains e.g. a `require("something")` call. | ||
| let instantiationReason; | ||
| switch (source.type) { | ||
| case SourceType.Runtime: | ||
| instantiationReason = `as a runtime entry of chunk ${source.chunkPath}`; | ||
| break; | ||
| case SourceType.Parent: | ||
| instantiationReason = `because it was required from module ${source.parentId}`; | ||
| break; | ||
| case SourceType.Update: | ||
| instantiationReason = "because of an HMR update"; | ||
| break; | ||
| default: | ||
| invariant(source, (source) => `Unknown source type: ${source?.type}`); | ||
| } | ||
| throw new Error( | ||
| `Module ${id} was instantiated ${instantiationReason}, but the module factory is not available. It might have been deleted in an HMR update.` | ||
| ); | ||
| } | ||
|
|
||
| let parents: ModuleId[]; | ||
| switch (source.type) { | ||
| case SourceType.Runtime: | ||
| runtimeModules.add(id); | ||
| parents = []; | ||
| break; | ||
| case SourceType.Parent: | ||
| // No need to add this module as a child of the parent module here, this | ||
| // has already been taken care of in `getOrInstantiateModuleFromParent`. | ||
| parents = [source.parentId]; | ||
| break; | ||
| case SourceType.Update: | ||
| parents = source.parents || []; | ||
| break; | ||
| default: | ||
| invariant(source, (source) => `Unknown source type: ${source?.type}`); | ||
| } | ||
|
|
||
| const module: Module = { | ||
| exports: {}, | ||
| error: undefined, | ||
| loaded: false, | ||
| id, | ||
| parents, | ||
| children: [], | ||
| namespaceObject: undefined, | ||
| }; | ||
|
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| moduleCache[id] = module; | ||
|
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| // NOTE(alexkirsz) This can fail when the module encounters a runtime error. | ||
| try { | ||
| const sourceInfo: SourceInfo = { type: SourceType.Parent, parentId: id }; | ||
|
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| const r = commonJsRequire.bind(null, module); | ||
| moduleFactory.call( | ||
| module.exports, | ||
| { | ||
| a: asyncModule.bind(null, module), | ||
| e: module.exports, | ||
| r: commonJsRequire.bind(null, module), | ||
| t: runtimeRequire, | ||
| f: moduleContext, | ||
| i: esmImport.bind(null, module), | ||
| s: esmExport.bind(null, module, module.exports), | ||
| j: dynamicExport.bind(null, module, module.exports), | ||
| v: exportValue.bind(null, module), | ||
| n: exportNamespace.bind(null, module), | ||
| m: module, | ||
| c: moduleCache, | ||
| M: moduleFactories, | ||
| l: loadChunk.bind(null, sourceInfo), | ||
| w: loadWebAssembly.bind(null, sourceInfo), | ||
| u: loadWebAssemblyModule.bind(null, sourceInfo), | ||
| g: globalThis, | ||
| P: resolveAbsolutePath, | ||
| U: relativeURL, | ||
| R: createResolvePathFromModule(r), | ||
| b: getWorkerBlobURL, | ||
| __dirname: typeof module.id === "string" ? module.id.replace(/(^|\/)\/+$/, "") : module.id | ||
| } | ||
| ); | ||
| } catch (error) { | ||
| module.error = error as any; | ||
| throw error; | ||
| } | ||
|
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| module.loaded = true; | ||
| if (module.namespaceObject && module.exports !== module.namespaceObject) { | ||
| // in case of a circular dependency: cjs1 -> esm2 -> cjs1 | ||
| interopEsm(module.exports, module.namespaceObject); | ||
| } | ||
|
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| return module; | ||
| } | ||
|
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