[turbopack] Add bundling support for worker_threads by lukesandberg · Pull Request #87746 · vercel/next.js

lukesandberg · 2025-12-24T06:11:35Z

Add support for bundling worker_threads workers

Previously we only supported tracing dependencies of worker threads. However, this could trigger issues if the callsite was getting bundled since we would believe that the file was both bundled and unbundled.

The solution is to support bundling modules using worker threads and implementing the threads. This requires a new reference and loader module type which follows the patter of async-loaders and webworkers.

An interesting consideration is about file extensions. new Worker(...) takes a relative or absolute filepath, in node 23+ that means you can load typescript files directly, so we support the same. If you want to load a .ts file you need to write foo.ts we don't do any pattern rewriting.

This fixes a bug reported by an X user: https://x.com/strugglercss/status/2002504736860484008?s=20. The problem with the previous approach is that we would record the reference as 'traced', but if you did new Worker(__filename,...) then we would end up with 'traced references' to a file that was bundled. This caused issues during tracing when we tried to add CachedExternalModule references to the nft json files

Error [TurbopackInternalError]: NftJsonAsset: cannot handle filepath url

Debug info:
- Execution of get_all_written_entrypoints_with_issues_operation failed
- Execution of EntrypointsOperation::new failed
- Execution of all_entrypoints_write_to_disk_operation failed
- Execution of Project::emit_all_output_assets failed
- Execution of emit_assets failed
- Execution of emit failed
- Execution of <NftJsonAsset as Asset>::content failed
- NftJsonAsset: cannot handle filepath url
    at <unknown> (TurbopackInternalError: NftJsonAsset: cannot handle filepath url) {

there url was due to a require('url') statement in a bundled file this caused us to produce an external shim, but a new Worker(__filename) caused us to also create a traced reference to the same file. The problem there was simply that the ident() for a CachedExternalModule contains a dummy filepath that broke the nft.json asset production. The root issue here is that the FilePathModuleReference was using the wrong AssetContext to construct the referenced module which lead to the wrong files being traced. After investigation @mischnic and I determined that that was an insufficient fix since we really do need to rewrite the reference. Proper bundling support fixes this directly and the pattern here paves the way for more worker support in the future.

This doesn't seem like the only way a synthetic module (like an extern module) might end up as a dependency of traced module, so a more robust solution is probably in order.

lukesandberg · 2025-12-24T06:11:51Z

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nextjs-bot · 2025-12-24T06:12:00Z

Allow CI Workflow Run

approve CI run for commit: f927b1c

Note: this should only be enabled once the PR is ready to go and can only be enabled by a maintainer

nextjs-bot · 2025-12-24T06:21:49Z

Stats from current PR

Default Build (Increase detected ⚠️)

General

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
buildDuration	17s	15.1s	N/A
buildDurationCached	14s	11s	N/A
nodeModulesSize	457 MB	457 MB	✓
nextStartRea..uration (ms)	719ms	719ms	✓

Client Bundles (main, webpack) Overall increase ⚠️

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
2086.HASH.js gzip	169 B	169 B	✓
2161-HASH.js gzip	5.39 kB	5.41 kB	N/A
2747-HASH.js gzip	4.48 kB	4.46 kB	N/A
4322-HASH.js gzip	52.5 kB	52.2 kB	N/A
ec793fe8-HASH.js gzip	62.3 kB	62.3 kB	N/A
framework-HASH.js gzip	59.8 kB	59.8 kB	N/A
main-app-HASH.js gzip	251 B	254 B	N/A
main-HASH.js gzip	38.4 kB	38.7 kB	⚠️ +369 B
webpack-HASH.js gzip	1.68 kB	1.69 kB	N/A
Overall change	38.5 kB	38.9 kB	⚠️ +369 B

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Overall change	39.4 kB	39.4 kB	✓

Client Pages

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
_app-HASH.js gzip	194 B	193 B	N/A
_error-HASH.js gzip	182 B	182 B	✓
css-HASH.js gzip	336 B	335 B	N/A
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head-HASH.js gzip	352 B	349 B	N/A
hooks-HASH.js gzip	385 B	384 B	N/A
image-HASH.js gzip	580 B	580 B	✓
index-HASH.js gzip	259 B	258 B	N/A
link-HASH.js gzip	2.5 kB	2.51 kB	N/A
routerDirect..HASH.js gzip	319 B	317 B	N/A
script-HASH.js gzip	385 B	387 B	N/A
withRouter-HASH.js gzip	316 B	315 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	1.12 kB	1.12 kB	✓

Client Build Manifests

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
_buildManifest.js gzip	738 B	738 B	✓
Overall change	738 B	738 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
index.html gzip	521 B	525 B	N/A
link.html gzip	536 B	539 B	N/A
withRouter.html gzip	518 B	521 B	N/A
Overall change	0 B	0 B	✓

Edge SSR bundle Size Overall increase ⚠️

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
edge-ssr.js gzip	124 kB	124 kB	N/A
page.js gzip	239 kB	239 kB	⚠️ +657 B
Overall change	239 kB	239 kB	⚠️ +657 B

Middleware size Overall increase ⚠️

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
middleware-b..fest.js gzip	652 B	653 B	N/A
middleware-r..fest.js gzip	155 B	156 B	N/A
middleware.js gzip	32.8 kB	33 kB	⚠️ +200 B
edge-runtime..pack.js gzip	846 B	846 B	✓
Overall change	33.6 kB	33.8 kB	⚠️ +200 B

Next Runtimes

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
app-page-exp...dev.js gzip	302 kB	302 kB	N/A
app-page-exp..prod.js gzip	157 kB	157 kB	✓
app-page-tur...dev.js gzip	302 kB	302 kB	N/A
app-page-tur..prod.js gzip	157 kB	157 kB	✓
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app-page-tur..prod.js gzip	155 kB	155 kB	✓
app-page.run...dev.js gzip	299 kB	299 kB	N/A
app-page.run..prod.js gzip	155 kB	155 kB	✓
app-route-ex...dev.js gzip	68.7 kB	68.7 kB	✓
app-route-ex..prod.js gzip	47.5 kB	47.5 kB	✓
app-route-tu...dev.js gzip	68.7 kB	68.7 kB	✓
app-route-tu..prod.js gzip	47.5 kB	47.5 kB	✓
app-route-tu...dev.js gzip	68.3 kB	68.3 kB	✓
app-route-tu..prod.js gzip	47.3 kB	47.3 kB	✓
app-route.ru...dev.js gzip	68.3 kB	68.3 kB	✓
app-route.ru..prod.js gzip	47.3 kB	47.3 kB	✓
dist_client_...dev.js gzip	324 B	324 B	✓
dist_client_...dev.js gzip	326 B	326 B	✓
dist_client_...dev.js gzip	318 B	318 B	✓
dist_client_...dev.js gzip	317 B	317 B	✓
pages-api-tu...dev.js gzip	41.1 kB	41.1 kB	✓
pages-api-tu..prod.js gzip	31.2 kB	31.2 kB	✓
pages-api.ru...dev.js gzip	41 kB	41 kB	✓
pages-api.ru..prod.js gzip	31.2 kB	31.2 kB	✓
pages-turbo....dev.js gzip	50.8 kB	50.8 kB	✓
pages-turbo...prod.js gzip	38.2 kB	38.2 kB	✓
pages.runtim...dev.js gzip	50.7 kB	50.7 kB	✓
pages.runtim..prod.js gzip	38.2 kB	38.2 kB	✓
server.runti..prod.js gzip	60 kB	60 kB	✓
Overall change	1.77 MB	1.77 MB	✓

build cache Overall increase ⚠️

	vercel/next.js canary	vercel/next.js worker_threads_bug	Change
0.pack gzip	3.62 MB	3.63 MB	⚠️ +2.11 kB
index.pack gzip	98.6 kB	99 kB	⚠️ +453 B
Overall change	3.72 MB	3.72 MB	⚠️ +2.56 kB

Diff details

Diff for page.js

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Diff for middleware.js

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Diff for edge-ssr.js

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Diff for _buildManifest.js

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-
-      /***/
-    },
-
-    /***/ 8460: /***/ (
+    /***/ 830: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -36,13 +19,30 @@
 
       /***/
     },
+
+    /***/ 1938: /***/ (
+      __unused_webpack_module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      (window.__NEXT_P = window.__NEXT_P || []).push([
+        "/",
+        function () {
+          return __webpack_require__(830);
+        },
+      ]);
+      if (false) {
+      }
+
+      /***/
+    },
   },
   /******/ (__webpack_require__) => {
     // webpackRuntimeModules
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(6376)
+      __webpack_exec__(1938)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

Diff for link-HASH.js

@@ -1,7 +1,220 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [4672],
   {
-    /***/ 857: /***/ (module, exports, __webpack_require__) => {
+    /***/ 2774: /***/ (module, exports, __webpack_require__) => {
+      "use strict";
+
+      Object.defineProperty(exports, "__esModule", {
+        value: true,
+      });
+      Object.defineProperty(exports, "useIntersection", {
+        enumerable: true,
+        get: function () {
+          return useIntersection;
+        },
+      });
+      const _react = __webpack_require__(4312);
+      const _requestidlecallback = __webpack_require__(9413);
+      const hasIntersectionObserver =
+        typeof IntersectionObserver === "function";
+      const observers = new Map();
+      const idList = [];
+      function createObserver(options) {
+        const id = {
+          root: options.root || null,
+          margin: options.rootMargin || "",
+        };
+        const existing = idList.find(
+          (obj) => obj.root === id.root && obj.margin === id.margin
+        );
+        let instance;
+        if (existing) {
+          instance = observers.get(existing);
+          if (instance) {
+            return instance;
+          }
+        }
+        const elements = new Map();
+        const observer = new IntersectionObserver((entries) => {
+          entries.forEach((entry) => {
+            const callback = elements.get(entry.target);
+            const isVisible =
+              entry.isIntersecting || entry.intersectionRatio > 0;
+            if (callback && isVisible) {
+              callback(isVisible);
+            }
+          });
+        }, options);
+        instance = {
+          id,
+          observer,
+          elements,
+        };
+        idList.push(id);
+        observers.set(id, instance);
+        return instance;
+      }
+      function observe(element, callback, options) {
+        const { id, observer, elements } = createObserver(options);
+        elements.set(element, callback);
+        observer.observe(element);
+        return function unobserve() {
+          elements.delete(element);
+          observer.unobserve(element);
+          // Destroy observer when there's nothing left to watch:
+          if (elements.size === 0) {
+            observer.disconnect();
+            observers.delete(id);
+            const index = idList.findIndex(
+              (obj) => obj.root === id.root && obj.margin === id.margin
+            );
+            if (index > -1) {
+              idList.splice(index, 1);
+            }
+          }
+        };
+      }
+      function useIntersection({ rootRef, rootMargin, disabled }) {
+        const isDisabled = disabled || !hasIntersectionObserver;
+        const [visible, setVisible] = (0, _react.useState)(false);
+        const elementRef = (0, _react.useRef)(null);
+        const setElement = (0, _react.useCallback)((element) => {
+          elementRef.current = element;
+        }, []);
+        (0, _react.useEffect)(() => {
+          if (hasIntersectionObserver) {
+            if (isDisabled || visible) return;
+            const element = elementRef.current;
+            if (element && element.tagName) {
+              const unobserve = observe(
+                element,
+                (isVisible) => isVisible && setVisible(isVisible),
+                {
+                  root: rootRef?.current,
+                  rootMargin,
+                }
+              );
+              return unobserve;
+            }
+          } else {
+            if (!visible) {
+              const idleCallback = (0,
+              _requestidlecallback.requestIdleCallback)(() => setVisible(true));
+              return () =>
+                (0, _requestidlecallback.cancelIdleCallback)(idleCallback);
+            }
+          }
+          // eslint-disable-next-line react-hooks/exhaustive-deps
+        }, [isDisabled, rootMargin, rootRef, visible, elementRef.current]);
+        const resetVisible = (0, _react.useCallback)(() => {
+          setVisible(false);
+        }, []);
+        return [setElement, visible, resetVisible];
+      }
+      if (
+        (typeof exports.default === "function" ||
+          (typeof exports.default === "object" && exports.default !== null)) &&
+        typeof exports.default.__esModule === "undefined"
+      ) {
+        Object.defineProperty(exports.default, "__esModule", {
+          value: true,
+        });
+        Object.assign(exports.default, exports);
+        module.exports = exports.default;
+      } //# sourceMappingURL=use-intersection.js.map
+
+      /***/
+    },
+
+    /***/ 3351: /***/ (module, exports, __webpack_require__) => {
+      "use strict";
+
+      Object.defineProperty(exports, "__esModule", {
+        value: true,
+      });
+      Object.defineProperty(exports, "useMergedRef", {
+        enumerable: true,
+        get: function () {
+          return useMergedRef;
+        },
+      });
+      const _react = __webpack_require__(4312);
+      function useMergedRef(refA, refB) {
+        const cleanupA = (0, _react.useRef)(null);
+        const cleanupB = (0, _react.useRef)(null);
+        // NOTE: In theory, we could skip the wrapping if only one of the refs is non-null.
+        // (this happens often if the user doesn't pass a ref to Link/Form/Image)
+        // But this can cause us to leak a cleanup-ref into user code (previously via `<Link legacyBehavior>`),
+        // and the user might pass that ref into ref-merging library that doesn't support cleanup refs
+        // (because it hasn't been updated for React 19)
+        // which can then cause things to blow up, because a cleanup-returning ref gets called with `null`.
+        // So in practice, it's safer to be defensive and always wrap the ref, even on React 19.
+        return (0, _react.useCallback)(
+          (current) => {
+            if (current === null) {
+              const cleanupFnA = cleanupA.current;
+              if (cleanupFnA) {
+                cleanupA.current = null;
+                cleanupFnA();
+              }
+              const cleanupFnB = cleanupB.current;
+              if (cleanupFnB) {
+                cleanupB.current = null;
+                cleanupFnB();
+              }
+            } else {
+              if (refA) {
+                cleanupA.current = applyRef(refA, current);
+              }
+              if (refB) {
+                cleanupB.current = applyRef(refB, current);
+              }
+            }
+          },
+          [refA, refB]
+        );
+      }
+      function applyRef(refA, current) {
+        if (typeof refA === "function") {
+          const cleanup = refA(current);
+          if (typeof cleanup === "function") {
+            return cleanup;
+          } else {
+            return () => refA(null);
+          }
+        } else {
+          refA.current = current;
+          return () => {
+            refA.current = null;
+          };
+        }
+      }
+      if (
+        (typeof exports.default === "function" ||
+          (typeof exports.default === "object" && exports.default !== null)) &&
+        typeof exports.default.__esModule === "undefined"
+      ) {
+        Object.defineProperty(exports.default, "__esModule", {
+          value: true,
+        });
+        Object.assign(exports.default, exports);
+        module.exports = exports.default;
+      } //# sourceMappingURL=use-merged-ref.js.map
+
+      /***/
+    },
+
+    /***/ 3440: /***/ (
+      module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      module.exports = __webpack_require__(4757);
+
+      /***/
+    },
+
+    /***/ 4757: /***/ (module, exports, __webpack_require__) => {
       "use strict";
       /* __next_internal_client_entry_do_not_use__  cjs */
       Object.defineProperty(exports, "__esModule", {
@@ -23,22 +236,22 @@
           return useLinkStatus;
         },
       });
-      const _interop_require_wildcard = __webpack_require__(8781);
+      const _interop_require_wildcard = __webpack_require__(1162);
       const _jsxruntime = __webpack_require__(3108);
       const _react = /*#__PURE__*/ _interop_require_wildcard._(
         __webpack_require__(4312)
       );
-      const _resolvehref = __webpack_require__(4055);
-      const _islocalurl = __webpack_require__(7175);
-      const _formaturl = __webpack_require__(9674);
-      const _utils = __webpack_require__(7424);
-      const _addlocale = __webpack_require__(589);
-      const _routercontextsharedruntime = __webpack_require__(7010);
-      const _useintersection = __webpack_require__(2330);
-      const _getdomainlocale = __webpack_require__(7207);
-      const _addbasepath = __webpack_require__(9942);
-      const _usemergedref = __webpack_require__(8067);
-      const _erroronce = __webpack_require__(1945);
+      const _resolvehref = __webpack_require__(4691);
+      const _islocalurl = __webpack_require__(4763);
+      const _formaturl = __webpack_require__(3246);
+      const _utils = __webpack_require__(7372);
+      const _addlocale = __webpack_require__(1809);
+      const _routercontextsharedruntime = __webpack_require__(2254);
+      const _useintersection = __webpack_require__(2774);
+      const _getdomainlocale = __webpack_require__(8803);
+      const _addbasepath = __webpack_require__(5834);
+      const _usemergedref = __webpack_require__(3351);
+      const _erroronce = __webpack_require__(6021);
       const prefetched = new Set();
       function prefetch(router, href, as, options) {
         if (false) {
@@ -417,168 +630,43 @@
       /***/
     },
 
-    /***/ 1945: /***/ (__unused_webpack_module, exports) => {
-      "use strict";
-
-      Object.defineProperty(exports, "__esModule", {
-        value: true,
-      });
-      Object.defineProperty(exports, "errorOnce", {
-        enumerable: true,
-        get: function () {
-          return errorOnce;
+    /***/ 5326: /***/ (
+      __unused_webpack_module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      (window.__NEXT_P = window.__NEXT_P || []).push([
+        "/link",
+        function () {
+          return __webpack_require__(9058);
         },
-      });
-      let errorOnce = (_) => {};
+      ]);
       if (false) {
-      } //# sourceMappingURL=error-once.js.map
+      }
 
       /***/
     },
 
-    /***/ 2330: /***/ (module, exports, __webpack_require__) => {
+    /***/ 6021: /***/ (__unused_webpack_module, exports) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
         value: true,
       });
-      Object.defineProperty(exports, "useIntersection", {
+      Object.defineProperty(exports, "errorOnce", {
         enumerable: true,
         get: function () {
-          return useIntersection;
+          return errorOnce;
         },
       });
-      const _react = __webpack_require__(4312);
-      const _requestidlecallback = __webpack_require__(601);
-      const hasIntersectionObserver =
-        typeof IntersectionObserver === "function";
-      const observers = new Map();
-      const idList = [];
-      function createObserver(options) {
-        const id = {
-          root: options.root || null,
-          margin: options.rootMargin || "",
-        };
-        const existing = idList.find(
-          (obj) => obj.root === id.root && obj.margin === id.margin
-        );
-        let instance;
-        if (existing) {
-          instance = observers.get(existing);
-          if (instance) {
-            return instance;
-          }
-        }
-        const elements = new Map();
-        const observer = new IntersectionObserver((entries) => {
-          entries.forEach((entry) => {
-            const callback = elements.get(entry.target);
-            const isVisible =
-              entry.isIntersecting || entry.intersectionRatio > 0;
-            if (callback && isVisible) {
-              callback(isVisible);
-            }
-          });
-        }, options);
-        instance = {
-          id,
-          observer,
-          elements,
-        };
-        idList.push(id);
-        observers.set(id, instance);
-        return instance;
-      }
-      function observe(element, callback, options) {
-        const { id, observer, elements } = createObserver(options);
-        elements.set(element, callback);
-        observer.observe(element);
-        return function unobserve() {
-          elements.delete(element);
-          observer.unobserve(element);
-          // Destroy observer when there's nothing left to watch:
-          if (elements.size === 0) {
-            observer.disconnect();
-            observers.delete(id);
-            const index = idList.findIndex(
-              (obj) => obj.root === id.root && obj.margin === id.margin
-            );
-            if (index > -1) {
-              idList.splice(index, 1);
-            }
-          }
-        };
-      }
-      function useIntersection({ rootRef, rootMargin, disabled }) {
-        const isDisabled = disabled || !hasIntersectionObserver;
-        const [visible, setVisible] = (0, _react.useState)(false);
-        const elementRef = (0, _react.useRef)(null);
-        const setElement = (0, _react.useCallback)((element) => {
-          elementRef.current = element;
-        }, []);
-        (0, _react.useEffect)(() => {
-          if (hasIntersectionObserver) {
-            if (isDisabled || visible) return;
-            const element = elementRef.current;
-            if (element && element.tagName) {
-              const unobserve = observe(
-                element,
-                (isVisible) => isVisible && setVisible(isVisible),
-                {
-                  root: rootRef?.current,
-                  rootMargin,
-                }
-              );
-              return unobserve;
-            }
-          } else {
-            if (!visible) {
-              const idleCallback = (0,
-              _requestidlecallback.requestIdleCallback)(() => setVisible(true));
-              return () =>
-                (0, _requestidlecallback.cancelIdleCallback)(idleCallback);
-            }
-          }
-          // eslint-disable-next-line react-hooks/exhaustive-deps
-        }, [isDisabled, rootMargin, rootRef, visible, elementRef.current]);
-        const resetVisible = (0, _react.useCallback)(() => {
-          setVisible(false);
-        }, []);
-        return [setElement, visible, resetVisible];
-      }
-      if (
-        (typeof exports.default === "function" ||
-          (typeof exports.default === "object" && exports.default !== null)) &&
-        typeof exports.default.__esModule === "undefined"
-      ) {
-        Object.defineProperty(exports.default, "__esModule", {
-          value: true,
-        });
-        Object.assign(exports.default, exports);
-        module.exports = exports.default;
-      } //# sourceMappingURL=use-intersection.js.map
-
-      /***/
-    },
-
-    /***/ 4972: /***/ (
-      __unused_webpack_module,
-      __unused_webpack_exports,
-      __webpack_require__
-    ) => {
-      (window.__NEXT_P = window.__NEXT_P || []).push([
-        "/link",
-        function () {
-          return __webpack_require__(7600);
-        },
-      ]);
+      let errorOnce = (_) => {};
       if (false) {
-      }
+      } //# sourceMappingURL=error-once.js.map
 
       /***/
     },
 
-    /***/ 7207: /***/ (module, exports, __webpack_require__) => {
+    /***/ 8803: /***/ (module, exports, __webpack_require__) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -590,7 +678,7 @@
           return getDomainLocale;
         },
       });
-      const _normalizetrailingslash = __webpack_require__(151);
+      const _normalizetrailingslash = __webpack_require__(1315);
       const basePath =
         /* unused pure expression or super */ null && (false || "");
       function getDomainLocale(path, locale, locales, domainLocales) {
@@ -614,7 +702,7 @@
       /***/
     },
 
-    /***/ 7600: /***/ (
+    /***/ 9058: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -629,7 +717,7 @@
       /* harmony import */ var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ =
         __webpack_require__(3108);
       /* harmony import */ var next_link__WEBPACK_IMPORTED_MODULE_1__ =
-        __webpack_require__(7830);
+        __webpack_require__(3440);
       /* harmony import */ var next_link__WEBPACK_IMPORTED_MODULE_1___default =
         /*#__PURE__*/ __webpack_require__.n(
           next_link__WEBPACK_IMPORTED_MODULE_1__
@@ -659,101 +747,13 @@
 
       /***/
     },
-
-    /***/ 7830: /***/ (
-      module,
-      __unused_webpack_exports,
-      __webpack_require__
-    ) => {
-      module.exports = __webpack_require__(857);
-
-      /***/
-    },
-
-    /***/ 8067: /***/ (module, exports, __webpack_require__) => {
-      "use strict";
-
-      Object.defineProperty(exports, "__esModule", {
-        value: true,
-      });
-      Object.defineProperty(exports, "useMergedRef", {
-        enumerable: true,
-        get: function () {
-          return useMergedRef;
-        },
-      });
-      const _react = __webpack_require__(4312);
-      function useMergedRef(refA, refB) {
-        const cleanupA = (0, _react.useRef)(null);
-        const cleanupB = (0, _react.useRef)(null);
-        // NOTE: In theory, we could skip the wrapping if only one of the refs is non-null.
-        // (this happens often if the user doesn't pass a ref to Link/Form/Image)
-        // But this can cause us to leak a cleanup-ref into user code (previously via `<Link legacyBehavior>`),
-        // and the user might pass that ref into ref-merging library that doesn't support cleanup refs
-        // (because it hasn't been updated for React 19)
-        // which can then cause things to blow up, because a cleanup-returning ref gets called with `null`.
-        // So in practice, it's safer to be defensive and always wrap the ref, even on React 19.
-        return (0, _react.useCallback)(
-          (current) => {
-            if (current === null) {
-              const cleanupFnA = cleanupA.current;
-              if (cleanupFnA) {
-                cleanupA.current = null;
-                cleanupFnA();
-              }
-              const cleanupFnB = cleanupB.current;
-              if (cleanupFnB) {
-                cleanupB.current = null;
-                cleanupFnB();
-              }
-            } else {
-              if (refA) {
-                cleanupA.current = applyRef(refA, current);
-              }
-              if (refB) {
-                cleanupB.current = applyRef(refB, current);
-              }
-            }
-          },
-          [refA, refB]
-        );
-      }
-      function applyRef(refA, current) {
-        if (typeof refA === "function") {
-          const cleanup = refA(current);
-          if (typeof cleanup === "function") {
-            return cleanup;
-          } else {
-            return () => refA(null);
-          }
-        } else {
-          refA.current = current;
-          return () => {
-            refA.current = null;
-          };
-        }
-      }
-      if (
-        (typeof exports.default === "function" ||
-          (typeof exports.default === "object" && exports.default !== null)) &&
-        typeof exports.default.__esModule === "undefined"
-      ) {
-        Object.defineProperty(exports.default, "__esModule", {
-          value: true,
-        });
-        Object.assign(exports.default, exports);
-        module.exports = exports.default;
-      } //# sourceMappingURL=use-merged-ref.js.map
-
-      /***/
-    },
   },
   /******/ (__webpack_require__) => {
     // webpackRuntimeModules
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(4972)
+      __webpack_exec__(5326)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

Diff for routerDirect-HASH.js

@@ -1,17 +1,7 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [188],
   {
-    /***/ 1179: /***/ (
-      module,
-      __unused_webpack_exports,
-      __webpack_require__
-    ) => {
-      module.exports = __webpack_require__(9864);
-
-      /***/
-    },
-
-    /***/ 1640: /***/ (
+    /***/ 2014: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -26,7 +16,7 @@
       /* harmony import */ var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ =
         __webpack_require__(3108);
       /* harmony import */ var next_router__WEBPACK_IMPORTED_MODULE_1__ =
-        __webpack_require__(1179);
+        __webpack_require__(4169);
       /* harmony import */ var next_router__WEBPACK_IMPORTED_MODULE_1___default =
         /*#__PURE__*/ __webpack_require__.n(
           next_router__WEBPACK_IMPORTED_MODULE_1__
@@ -46,7 +36,17 @@
       /***/
     },
 
-    /***/ 2172: /***/ (
+    /***/ 4169: /***/ (
+      module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      module.exports = __webpack_require__(9700);
+
+      /***/
+    },
+
+    /***/ 4414: /***/ (
       __unused_webpack_module,
       __unused_webpack_exports,
       __webpack_require__
@@ -54,7 +54,7 @@
       (window.__NEXT_P = window.__NEXT_P || []).push([
         "/routerDirect",
         function () {
-          return __webpack_require__(1640);
+          return __webpack_require__(2014);
         },
       ]);
       if (false) {
@@ -68,7 +68,7 @@
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(2172)
+      __webpack_exec__(4414)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

Diff for script-HASH.js

@@ -1,17 +1,34 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [1209],
   {
-    /***/ 4977: /***/ (
+    /***/ 2591: /***/ (
       module,
       __unused_webpack_exports,
       __webpack_require__
     ) => {
-      module.exports = __webpack_require__(326);
+      module.exports = __webpack_require__(4634);
 
       /***/
     },
 
-    /***/ 5887: /***/ (
+    /***/ 5030: /***/ (
+      __unused_webpack_module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      (window.__NEXT_P = window.__NEXT_P || []).push([
+        "/script",
+        function () {
+          return __webpack_require__(7557);
+        },
+      ]);
+      if (false) {
+      }
+
+      /***/
+    },
+
+    /***/ 7557: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -26,7 +43,7 @@
       /* harmony import */ var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ =
         __webpack_require__(3108);
       /* harmony import */ var next_script__WEBPACK_IMPORTED_MODULE_1__ =
-        __webpack_require__(4977);
+        __webpack_require__(2591);
       /* harmony import */ var next_script__WEBPACK_IMPORTED_MODULE_1___default =
         /*#__PURE__*/ __webpack_require__.n(
           next_script__WEBPACK_IMPORTED_MODULE_1__
@@ -58,30 +75,13 @@
 
       /***/
     },
-
-    /***/ 6268: /***/ (
-      __unused_webpack_module,
-      __unused_webpack_exports,
-      __webpack_require__
-    ) => {
-      (window.__NEXT_P = window.__NEXT_P || []).push([
-        "/script",
-        function () {
-          return __webpack_require__(5887);
-        },
-      ]);
-      if (false) {
-      }
-
-      /***/
-    },
   },
   /******/ (__webpack_require__) => {
     // webpackRuntimeModules
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(6268)
+      __webpack_exec__(5030)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

Diff for withRouter-HASH.js

@@ -1,34 +1,7 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [3263],
   {
-    /***/ 1179: /***/ (
-      module,
-      __unused_webpack_exports,
-      __webpack_require__
-    ) => {
-      module.exports = __webpack_require__(9864);
-
-      /***/
-    },
-
-    /***/ 2028: /***/ (
-      __unused_webpack_module,
-      __unused_webpack_exports,
-      __webpack_require__
-    ) => {
-      (window.__NEXT_P = window.__NEXT_P || []).push([
-        "/withRouter",
-        function () {
-          return __webpack_require__(4501);
-        },
-      ]);
-      if (false) {
-      }
-
-      /***/
-    },
-
-    /***/ 4501: /***/ (
+    /***/ 559: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -43,7 +16,7 @@
       /* harmony import */ var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ =
         __webpack_require__(3108);
       /* harmony import */ var next_router__WEBPACK_IMPORTED_MODULE_1__ =
-        __webpack_require__(1179);
+        __webpack_require__(4169);
       /* harmony import */ var next_router__WEBPACK_IMPORTED_MODULE_1___default =
         /*#__PURE__*/ __webpack_require__.n(
           next_router__WEBPACK_IMPORTED_MODULE_1__
@@ -61,13 +34,40 @@
 
       /***/
     },
+
+    /***/ 726: /***/ (
+      __unused_webpack_module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      (window.__NEXT_P = window.__NEXT_P || []).push([
+        "/withRouter",
+        function () {
+          return __webpack_require__(559);
+        },
+      ]);
+      if (false) {
+      }
+
+      /***/
+    },
+
+    /***/ 4169: /***/ (
+      module,
+      __unused_webpack_exports,
+      __webpack_require__
+    ) => {
+      module.exports = __webpack_require__(9700);
+
+      /***/
+    },
   },
   /******/ (__webpack_require__) => {
     // webpackRuntimeModules
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [636, 6593, 8792], () =>
-      __webpack_exec__(2028)
+      __webpack_exec__(726)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

Diff for 2161-HASH.js

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Diff for 2747-HASH.js

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Diff for 4322-HASH.js

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Commit: e9009ae

nextjs-bot · 2025-12-24T06:31:35Z

Tests Passed

turbopack/crates/turbopack-nodejs/src/chunking_context.rs

codspeed-hq · 2025-12-27T18:38:51Z

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing worker_threads_bug (e0942cb) with canary (7e9d7cb)}

Summary

✅ 17 untouched benchmarks
⏩ 3 skipped benchmarks¹

3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

turbopack/crates/turbopack-nodejs/src/chunking_context.rs

crates/next-api/src/nft_json.rs

lukesandberg · 2026-01-05T23:29:25Z

Switch to calling entry_chunk_group instead of evaluated_chunk_group

check that we are using the correct asset context? should be fine now. the original issue was due to using the wrong AssetContext when producing the value.

turbopack/crates/turbopack-ecmascript/src/worker_chunk/chunk_item.rs

crates/next-api/src/middleware.rs

crates/next-api/src/nft_json.rs

test/e2e/app-dir/node-worker-threads/app/api/simple-worker-test/route.ts

nextjs-bot · 2026-01-16T01:01:56Z

Stats from current PR

✅ No significant changes detected

📊 All Metrics

📖 Metrics Glossary

Dev Server Metrics:

Listen = TCP port starts accepting connections
First Request = HTTP server returns successful response
Cold = Fresh build (no cache)
Warm = With cached build artifacts

Build Metrics:

Fresh = Clean build (no .next directory)
Cached = With existing .next directory

Change Thresholds:

Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
Size: Changes < 1KB AND < 1% are insignificant
All other changes are flagged to catch regressions

⚡ Dev Server

Metric	Canary	PR	Change	Trend
Cold (Listen)	456ms	456ms	✓	▁▁▁▁▁
Cold (Ready in log)	439ms	439ms	✓	▂▂▁▂▂
Cold (First Request)	1.220s	1.179s	✓	▄▄▄▄▂
Warm (Listen)	456ms	455ms	✓	▁▁▁▁▁
Warm (Ready in log)	443ms	443ms	✓	▁▁▁▁▂
Warm (First Request)	343ms	343ms	✓	▁▁▁▁▂

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	455ms	456ms	✓	▁▁█▅▁
Cold (Ready in log)	452ms	450ms	✓	█▆█▁█
Cold (First Request)	1.859s	1.851s	✓	▄▄█▁▆
Warm (Listen)	456ms	455ms	✓	▅▅█▅▁
Warm (Ready in log)	449ms	448ms	✓	▆▆█▁▇
Warm (First Request)	1.867s	1.867s	✓	▄▄█▁▆

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	4.253s	4.355s	✓	▁▁▁▁▃
Cached Build	4.328s	4.427s	✓	▁▁▁▁▃

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	14.171s	14.177s	✓	▁▂█▁▃
Cached Build	14.261s	14.208s	✓	▂▃█▂▅
node_modules Size	458 MB	458 MB	✓	▃▃▃██

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **430 kB** → **430 kB** ✅ -82 B

82 files with content-based hashes (individual files not comparable between builds)

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	790 B	790 B	✓
Total	790 B	790 B	✓

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	452 B	451 B	✓
Total	452 B	451 B	✅ -1 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
2086.HASH.js gzip	169 B	N/A	-
2161-HASH.js gzip	5.41 kB	N/A	-
2747-HASH.js gzip	4.48 kB	N/A	-
4322-HASH.js gzip	52.3 kB	N/A	-
ec793fe8-HASH.js gzip	62.3 kB	N/A	-
framework-HASH.js gzip	59.8 kB	59.8 kB	✓
main-app-HASH.js gzip	251 B	252 B	✓
main-HASH.js gzip	38.6 kB	38.9 kB	✓
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
1596.HASH.js gzip	N/A	169 B	-
2658-HASH.js gzip	N/A	51.9 kB	-
6349-HASH.js gzip	N/A	4.46 kB	-
7019-HASH.js gzip	N/A	5.43 kB	-
b17a3386-HASH.js gzip	N/A	62.3 kB	-
Total	225 kB	225 kB	✅ -14 B

Polyfills

	Canary	PR	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Total	39.4 kB	39.4 kB	✓

Pages

	Canary	PR	Change
_app-HASH.js gzip	194 B	193 B	✓
_error-HASH.js gzip	182 B	182 B	✓
css-HASH.js gzip	336 B	335 B	✓
dynamic-HASH.js gzip	1.8 kB	1.8 kB	✓
edge-ssr-HASH.js gzip	256 B	256 B	✓
head-HASH.js gzip	352 B	349 B	✓
hooks-HASH.js gzip	385 B	384 B	✓
image-HASH.js gzip	580 B	580 B	✓
index-HASH.js gzip	259 B	258 B	✓
link-HASH.js gzip	2.5 kB	2.51 kB	✓
routerDirect..HASH.js gzip	319 B	317 B	✓
script-HASH.js gzip	385 B	387 B	✓
withRouter-HASH.js gzip	316 B	315 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	7.97 kB	7.96 kB	✅ -8 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	125 kB	125 kB	✓
page.js gzip	242 kB	237 kB	🟢 4.91 kB (-2%)
Total	367 kB	362 kB	✅ -4.9 kB

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	654 B	654 B	✓
middleware-r..fest.js gzip	155 B	156 B	✓
middleware.js gzip	33.1 kB	33.3 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	34.7 kB	35 kB	⚠️ +256 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	738 B	738 B	✓
Total	738 B	738 B	✓

Build Cache

	Canary	PR	Change
0.pack gzip	3.66 MB	3.67 MB	🔴 +4.42 kB (+0%)
index.pack gzip	99.5 kB	98.9 kB	✓
index.pack.old gzip	100 kB	99.8 kB	✓
Total	3.86 MB	3.87 MB	⚠️ +3.63 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	304 kB	304 kB	✓
app-page-exp..prod.js gzip	158 kB	158 kB	✓
app-page-tur...dev.js gzip	304 kB	304 kB	✓
app-page-tur..prod.js gzip	158 kB	158 kB	✓
app-page-tur...dev.js gzip	300 kB	300 kB	✓
app-page-tur..prod.js gzip	156 kB	156 kB	✓
app-page.run...dev.js gzip	300 kB	300 kB	✓
app-page.run..prod.js gzip	156 kB	156 kB	✓
app-route-ex...dev.js gzip	68.8 kB	68.8 kB	✓
app-route-ex..prod.js gzip	47.6 kB	47.6 kB	✓
app-route-tu...dev.js gzip	68.8 kB	68.8 kB	✓
app-route-tu..prod.js gzip	47.6 kB	47.6 kB	✓
app-route-tu...dev.js gzip	68.4 kB	68.4 kB	✓
app-route-tu..prod.js gzip	47.4 kB	47.4 kB	✓
app-route.ru...dev.js gzip	68.4 kB	68.4 kB	✓
app-route.ru..prod.js gzip	47.4 kB	47.4 kB	✓
dist_client_...dev.js gzip	324 B	324 B	✓
dist_client_...dev.js gzip	326 B	326 B	✓
dist_client_...dev.js gzip	318 B	318 B	✓
dist_client_...dev.js gzip	317 B	317 B	✓
pages-api-tu...dev.js gzip	41.2 kB	41.2 kB	✓
pages-api-tu..prod.js gzip	31.3 kB	31.3 kB	✓
pages-api.ru...dev.js gzip	41.1 kB	41.1 kB	✓
pages-api.ru..prod.js gzip	31.2 kB	31.2 kB	✓
pages-turbo....dev.js gzip	50.8 kB	50.8 kB	✓
pages-turbo...prod.js gzip	38.2 kB	38.2 kB	✓
pages.runtim...dev.js gzip	50.7 kB	50.7 kB	✓
pages.runtim..prod.js gzip	38.2 kB	38.2 kB	✓
server.runti..prod.js gzip	62.2 kB	62.2 kB	✓
Total	2.69 MB	2.69 MB	⚠️ +2 B

turbopack/crates/turbopack-ecmascript/src/worker_chunk/module.rs

…cture

clippy

…ng affecting sources when we should from these resolution calls

mmastrac

LGTM. I think I can layer my worker code on top of this.

mmastrac · 2026-01-16T23:17:25Z

turbopack/crates/turbopack-ecmascript/src/worker_chunk/chunk_item.rs

-            "#,
-            chunks = StringifyJs(&chunks_data),
+    fn content(self: Vc<Self>) -> Vc<EcmascriptChunkItemContent> {
+        panic!("should not be called");


Could be useful to have a quick note explaining why

lukesandberg · 2026-01-16T23:24:12Z

Merge activity

Jan 16, 11:24 PM UTC: @lukesandberg merged this pull request with Graphite.

This reverts commit 0929612.

Reverts #87746 because of this build error: ``` > Build error occurred Error: Turbopack build failed with 1 errors: ./node_modules/.pnpm/thread-stream@3.1.0/node_modules/thread-stream/index.js non-evaluatable module Worker thread module must be evaluatable ```

#88967) ## What? This PR reapplies #87746 which adds bundling support for Node.js `worker_threads` in Turbopack. ## Why? The original PR (#87746) was reverted in #88725 because it broke builds that use packages like `pino` with transports. These packages use dynamic patterns like `join(__dirname, 'lib', 'worker.js')` to resolve worker entry points, which can match non-evaluatable files like `package.json` or `tsconfig.json`. ## How? This PR reapplies the original changes with the following fixes: 1. **Downgrade errors to warnings in tracing contexts**: When `loose_errors` is enabled (tracing mode) or `in_try` is true, worker entry point validation errors are now emitted as warnings instead of errors. This follows the established Turbopack pattern used in `handle_resolve_error` and other resolve error handling. 2. **Improved error messages**: Error messages for non-chunkable and non-evaluatable worker entry point modules now include: - The module identifier (so you can see which file caused the issue) - The issue source location (pointing to the `new Worker()` call in source code) 3. **Added regression test**: A new pino-based test case exercises the `thread-stream` worker pattern that caused the original failure. This test runs in `CodeGenerationAndTracing` mode via `test-start-turbo`. ## Changes from original PR - Added `source` field to `CodeGenerationIssue` to support showing issue source locations - Added `get_issue_severity()` helper that checks `loose_errors` and `in_try` to determine severity - Fixed typo: `"SharedbWorker"` → `"SharedWorker"` in `to_string` implementation - Added pino regression test in `test/e2e/app-dir/node-worker-threads/` ## Testing - ✅ `pnpm test-dev-turbo test/e2e/app-dir/node-worker-threads/` - all tests pass - ✅ `pnpm test-start-turbo test/e2e/app-dir/node-worker-threads/` - all tests pass (exercises bundling mode) - ✅ Verified test fails without the `loose_errors` fix - ✅ Verified vercel-docs build succeeds with warnings instead of errors

nextjs-bot added created-by: Turbopack team PRs by the Turbopack team. Turbopack Related to Turbopack with Next.js. labels Dec 24, 2025

lukesandberg changed the title ~~demonstrate worker problem~~ [turbopack] Demonstrate worker_threads problem Dec 24, 2025

lukesandberg changed the title ~~[turbopack] Demonstrate worker_threads problem~~ [turbopack] Add bundling support for worker_threads Dec 27, 2025

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lukesandberg marked this pull request as ready for review December 27, 2025 23:56

lukesandberg requested a review from a team December 27, 2025 23:56

lukesandberg marked this pull request as draft December 28, 2025 23:56

nextjs-bot added the tests label Dec 30, 2025

lukesandberg mentioned this pull request Dec 30, 2025

[turbopack] Reduce duplication across ChunkingContext implemetnations #87912

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lukesandberg marked this pull request as ready for review December 30, 2025 23:26

lukesandberg commented Jan 5, 2026

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lukesandberg force-pushed the worker_threads_bug branch from e9009ae to 6b47ab2 Compare January 15, 2026 19:09

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lukesandberg force-pushed the worker_threads_bug branch from 6b47ab2 to 1085869 Compare January 16, 2026 00:39

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turbopack/crates/turbopack-ecmascript/src/worker_chunk/module.rs Outdated Show resolved Hide resolved

lukesandberg added 17 commits January 16, 2026 10:22

reduce visibility

ffa09ae

debugging code

912e850

clean up

7421a35

basic bundling support for workers

f79977d

add a test demonstring the issue with dynamic worker threads

c7ffd65

fix dynamic requires

1d92198

unify worker implementations to eliminate a bundle of duplicated stru…

656a74a

…cture

fix tracing

238c40b

clippy

tiny cleanups

1177001

fix tracing again

5900234

more comments

930fac5

improve error message

941b513

switch to entry chunk groups

842ebd5

simplify now that we are no longer using evaluated_chunk_groups

6326af9

tweak

95d06cf

Fix the root directory for worker threads, and ensure we are collecti…

92cb654

…ng affecting sources when we should from these resolution calls

tweak a comment

309f93c

lukesandberg force-pushed the worker_threads_bug branch from 1085869 to 309f93c Compare January 16, 2026 20:37

fix formatting

e0942cb

mmastrac approved these changes Jan 16, 2026

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lukesandberg merged commit 0929612 into canary Jan 16, 2026
294 of 296 checks passed

lukesandberg deleted the worker_threads_bug branch January 16, 2026 23:24

sokra added a commit that referenced this pull request Jan 19, 2026

Revert "[turbopack] Add bundling support for worker_threads (#87746)"

d3c48f1

This reverts commit 0929612.

sokra mentioned this pull request Jan 19, 2026

Revert "[turbopack] Add bundling support for worker_threads" #88725

Merged

lukesandberg mentioned this pull request Jan 23, 2026

Reapply "[turbopack] Add bundling support for worker_threads" (#88725) #88967

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