diff --git a/gulpfile.mjs b/gulpfile.mjs
index 6a4d51b03..a99a104bc 100644
--- a/gulpfile.mjs
+++ b/gulpfile.mjs
@@ -362,10 +362,6 @@ function createWebpackConfig(
                   // V8 chokes on very long sequences, work around that.
                   sequences: false,
                 },
-                mangle: {
-                  // Ensure that the `tweakWebpackOutput` function works.
-                  reserved: ["__webpack_exports__"],
-                },
                 keep_classnames: true,
                 keep_fnames: true,
                 module: isModule,
@@ -463,13 +459,6 @@ function checkChromePreferencesFile(chromePrefsPath, webPrefs) {
   return ret;
 }
 
-function tweakWebpackOutput(jsName) {
-  return replace(
-    /((?:\s|,)__webpack_exports__)(?:\s?)=(?:\s?)({};)/gm,
-    (match, p1, p2) => `${p1} = globalThis.${jsName} = ${p2}`
-  );
-}
-
 function createMainBundle(defines) {
   const mainFileConfig = createWebpackConfig(defines, {
     filename: defines.MINIFIED ? "pdf.min.mjs" : "pdf.mjs",
@@ -479,8 +468,7 @@ function createMainBundle(defines) {
   });
   return gulp
     .src("./src/pdf.js", { encoding: false })
-    .pipe(webpack2Stream(mainFileConfig))
-    .pipe(tweakWebpackOutput("pdfjsLib"));
+    .pipe(webpack2Stream(mainFileConfig));
 }
 
 function createScriptingBundle(defines, extraOptions = undefined) {
@@ -548,8 +536,7 @@ function createSandboxBundle(defines, extraOptions = undefined) {
 
   return gulp
     .src("./src/pdf.sandbox.js", { encoding: false })
-    .pipe(webpack2Stream(sandboxFileConfig))
-    .pipe(tweakWebpackOutput("pdfjsSandbox"));
+    .pipe(webpack2Stream(sandboxFileConfig));
 }
 
 function createWorkerBundle(defines) {
@@ -561,8 +548,7 @@ function createWorkerBundle(defines) {
   });
   return gulp
     .src("./src/pdf.worker.js", { encoding: false })
-    .pipe(webpack2Stream(workerFileConfig))
-    .pipe(tweakWebpackOutput("pdfjsWorker"));
+    .pipe(webpack2Stream(workerFileConfig));
 }
 
 function createWebBundle(defines, options) {
@@ -610,8 +596,7 @@ function createComponentsBundle(defines) {
   });
   return gulp
     .src("./web/pdf_viewer.component.js", { encoding: false })
-    .pipe(webpack2Stream(componentsFileConfig))
-    .pipe(tweakWebpackOutput("pdfjsViewer"));
+    .pipe(webpack2Stream(componentsFileConfig));
 }
 
 function createImageDecodersBundle(defines) {
@@ -625,8 +610,7 @@ function createImageDecodersBundle(defines) {
   });
   return gulp
     .src("./src/pdf.image_decoders.js", { encoding: false })
-    .pipe(webpack2Stream(componentsFileConfig))
-    .pipe(tweakWebpackOutput("pdfjsImageDecoders"));
+    .pipe(webpack2Stream(componentsFileConfig));
 }
 
 function createCMapBundle() {
diff --git a/package-lock.json b/package-lock.json
index 5f3d8950c..22ced23e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,7 +58,7 @@
         "ttest": "^4.0.0",
         "typescript": "^5.8.3",
         "vinyl": "^3.0.0",
-        "webpack": "^5.98.0",
+        "webpack": "^5.99.5",
         "webpack-stream": "^7.0.0",
         "yargs": "^17.7.2"
       },
@@ -12388,9 +12388,9 @@
       }
     },
     "node_modules/webpack": {
-      "version": "5.98.0",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.98.0.tgz",
-      "integrity": "sha512-UFynvx+gM44Gv9qFgj0acCQK2VE1CtdfwFdimkapco3hlPCJ/zeq73n2yVKimVbtm+TnApIugGhLJnkU6gjYXA==",
+      "version": "5.99.5",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.99.5.tgz",
+      "integrity": "sha512-q+vHBa6H9qwBLUlHL4Y7L0L1/LlyBKZtS9FHNCQmtayxjI5RKC9yD8gpvLeqGv5lCQp1Re04yi0MF40pf30Pvg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 323d3ba3f..27eee246d 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "ttest": "^4.0.0",
     "typescript": "^5.8.3",
     "vinyl": "^3.0.0",
-    "webpack": "^5.98.0",
+    "webpack": "^5.99.5",
     "webpack-stream": "^7.0.0",
     "yargs": "^17.7.2"
   },
diff --git a/src/display/api.js b/src/display/api.js
index a223d5e6f..e210118b3 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -2136,6 +2136,13 @@ class PDFWorker {
         );
       };
     }
+
+    if (typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) {
+      this._resetGlobalState = () => {
+        this.#isWorkerDisabled = false;
+        delete globalThis.pdfjsWorker;
+      };
+    }
   }
 
   constructor({
diff --git a/src/pdf.image_decoders.js b/src/pdf.image_decoders.js
index 633d51105..2631f46f7 100644
--- a/src/pdf.image_decoders.js
+++ b/src/pdf.image_decoders.js
@@ -29,6 +29,18 @@ const pdfjsVersion =
 const pdfjsBuild =
   typeof PDFJSDev !== "undefined" ? PDFJSDev.eval("BUNDLE_BUILD") : void 0;
 
+globalThis.pdfjsImageDecoders = {
+  getVerbosityLevel,
+  Jbig2Error,
+  Jbig2Image,
+  JpegError,
+  JpegImage,
+  JpxError,
+  JpxImage,
+  setVerbosityLevel,
+  VerbosityLevel,
+};
+
 export {
   getVerbosityLevel,
   Jbig2Error,
diff --git a/src/pdf.js b/src/pdf.js
index e9a1b974c..2a3acbaaf 100644
--- a/src/pdf.js
+++ b/src/pdf.js
@@ -93,6 +93,59 @@ if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("TESTING || GENERIC")) {
   };
 }
 
+globalThis.pdfjsLib = {
+  AbortException,
+  AnnotationEditorLayer,
+  AnnotationEditorParamsType,
+  AnnotationEditorType,
+  AnnotationEditorUIManager,
+  AnnotationLayer,
+  AnnotationMode,
+  AnnotationType,
+  build,
+  ColorPicker,
+  createValidAbsoluteUrl,
+  DOMSVGFactory,
+  DrawLayer,
+  FeatureTest,
+  fetchData,
+  getDocument,
+  getFilenameFromUrl,
+  getPdfFilenameFromUrl,
+  getUuid,
+  getXfaPageViewport,
+  GlobalWorkerOptions,
+  ImageKind,
+  InvalidPDFException,
+  isDataScheme,
+  isPdfFile,
+  isValidExplicitDest,
+  MathClamp,
+  noContextMenu,
+  normalizeUnicode,
+  OPS,
+  OutputScale,
+  PasswordResponses,
+  PDFDataRangeTransport,
+  PDFDateString,
+  PDFWorker,
+  PermissionFlag,
+  PixelsPerInch,
+  RenderingCancelledException,
+  ResponseException,
+  setLayerDimensions,
+  shadow,
+  SignatureExtractor,
+  stopEvent,
+  SupportedImageMimeTypes,
+  TextLayer,
+  TouchManager,
+  Util,
+  VerbosityLevel,
+  version,
+  XfaLayer,
+};
+
 export {
   AbortException,
   AnnotationEditorLayer,
diff --git a/src/pdf.sandbox.js b/src/pdf.sandbox.js
index 79cb05ec1..4752f9f59 100644
--- a/src/pdf.sandbox.js
+++ b/src/pdf.sandbox.js
@@ -145,4 +145,8 @@ function QuickJSSandbox() {
   return ModuleLoader().then(module => new Sandbox(window, module));
 }
 
+globalThis.pdfjsSandbox = {
+  QuickJSSandbox,
+};
+
 export { QuickJSSandbox };
diff --git a/src/pdf.worker.js b/src/pdf.worker.js
index 900c0b02a..5d6bdf0aa 100644
--- a/src/pdf.worker.js
+++ b/src/pdf.worker.js
@@ -22,4 +22,8 @@ const pdfjsVersion =
 const pdfjsBuild =
   typeof PDFJSDev !== "undefined" ? PDFJSDev.eval("BUNDLE_BUILD") : void 0;
 
+globalThis.pdfjsWorker = {
+  WorkerMessageHandler,
+};
+
 export { WorkerMessageHandler };
diff --git a/test/unit/pdf.image_decoders_spec.js b/test/unit/pdf.image_decoders_spec.js
index d12210e3d..ebd583fd3 100644
--- a/test/unit/pdf.image_decoders_spec.js
+++ b/test/unit/pdf.image_decoders_spec.js
@@ -22,6 +22,18 @@ import { Jbig2Error, Jbig2Image } from "../../src/core/jbig2.js";
 import { JpegError, JpegImage } from "../../src/core/jpg.js";
 import { JpxError, JpxImage } from "../../src/core/jpx.js";
 
+const expectedAPI = Object.freeze({
+  getVerbosityLevel,
+  Jbig2Error,
+  Jbig2Image,
+  JpegError,
+  JpegImage,
+  JpxError,
+  JpxImage,
+  setVerbosityLevel,
+  VerbosityLevel,
+});
+
 describe("pdfimage_api", function () {
   it("checks that the *official* PDF.js-image decoders API exposes the expected functionality", async function () {
     // eslint-disable-next-line no-unsanitized/method
@@ -33,16 +45,10 @@ describe("pdfimage_api", function () {
 
     // The imported Object contains an (automatically) inserted Symbol,
     // hence we copy the data to allow using a simple comparison below.
-    expect({ ...pdfimageAPI }).toEqual({
-      getVerbosityLevel,
-      Jbig2Error,
-      Jbig2Image,
-      JpegError,
-      JpegImage,
-      JpxError,
-      JpxImage,
-      setVerbosityLevel,
-      VerbosityLevel,
-    });
+    expect({ ...pdfimageAPI }).toEqual(expectedAPI);
+
+    expect(Object.keys(globalThis.pdfjsImageDecoders).sort()).toEqual(
+      Object.keys(expectedAPI).sort()
+    );
   });
 });
diff --git a/test/unit/pdf.worker_spec.js b/test/unit/pdf.worker_spec.js
index f90498662..b02fc6746 100644
--- a/test/unit/pdf.worker_spec.js
+++ b/test/unit/pdf.worker_spec.js
@@ -13,9 +13,20 @@
  * limitations under the License.
  */
 
+import { PDFWorker } from "../../src/display/api.js";
 import { WorkerMessageHandler } from "../../src/core/worker.js";
 
+const expectedAPI = Object.freeze({
+  WorkerMessageHandler,
+});
+
 describe("pdfworker_api", function () {
+  afterEach(function () {
+    // Avoid interfering with other unit-tests, since `globalThis.pdfjsWorker`
+    // being defined will impact loading and usage of the worker.
+    PDFWorker._resetGlobalState();
+  });
+
   it("checks that the *official* PDF.js-worker API exposes the expected functionality", async function () {
     // eslint-disable-next-line no-unsanitized/method
     const pdfworkerAPI = await import(
@@ -26,8 +37,10 @@ describe("pdfworker_api", function () {
 
     // The imported Object contains an (automatically) inserted Symbol,
     // hence we copy the data to allow using a simple comparison below.
-    expect({ ...pdfworkerAPI }).toEqual({
-      WorkerMessageHandler,
-    });
+    expect({ ...pdfworkerAPI }).toEqual(expectedAPI);
+
+    expect(Object.keys(globalThis.pdfjsWorker).sort()).toEqual(
+      Object.keys(expectedAPI).sort()
+    );
   });
 });
diff --git a/test/unit/pdf_spec.js b/test/unit/pdf_spec.js
index 184afaecb..714753502 100644
--- a/test/unit/pdf_spec.js
+++ b/test/unit/pdf_spec.js
@@ -135,6 +135,10 @@ describe("pdfjs_api", function () {
     // The imported Object contains an (automatically) inserted Symbol,
     // hence we copy the data to allow using a simple comparison below.
     expect({ ...pdfjsAPI }).toEqual(expectedAPI);
+
+    expect(Object.keys(globalThis.pdfjsLib).sort()).toEqual(
+      Object.keys(expectedAPI).sort()
+    );
   });
 });
 
diff --git a/test/unit/pdf_viewer.component_spec.js b/test/unit/pdf_viewer.component_spec.js
index 1785a4959..a511a353f 100644
--- a/test/unit/pdf_viewer.component_spec.js
+++ b/test/unit/pdf_viewer.component_spec.js
@@ -39,35 +39,41 @@ import { StructTreeLayerBuilder } from "../../web/struct_tree_layer_builder.js";
 import { TextLayerBuilder } from "../../web/text_layer_builder.js";
 import { XfaLayerBuilder } from "../../web/xfa_layer_builder.js";
 
+const expectedAPI = Object.freeze({
+  AnnotationLayerBuilder,
+  DownloadManager,
+  EventBus,
+  FindState,
+  GenericL10n,
+  LinkTarget,
+  parseQueryString,
+  PDFFindController,
+  PDFHistory,
+  PDFLinkService,
+  PDFPageView,
+  PDFScriptingManager,
+  PDFSinglePageViewer,
+  PDFViewer,
+  ProgressBar,
+  RenderingStates,
+  ScrollMode,
+  SimpleLinkService,
+  SpreadMode,
+  StructTreeLayerBuilder,
+  TextLayerBuilder,
+  XfaLayerBuilder,
+});
+
 describe("pdfviewer_api", function () {
   it("checks that the *official* PDF.js-viewer API exposes the expected functionality", async function () {
     const pdfviewerAPI = await import("../../web/pdf_viewer.component.js");
 
     // The imported Object contains an (automatically) inserted Symbol,
     // hence we copy the data to allow using a simple comparison below.
-    expect({ ...pdfviewerAPI }).toEqual({
-      AnnotationLayerBuilder,
-      DownloadManager,
-      EventBus,
-      FindState,
-      GenericL10n,
-      LinkTarget,
-      parseQueryString,
-      PDFFindController,
-      PDFHistory,
-      PDFLinkService,
-      PDFPageView,
-      PDFScriptingManager,
-      PDFSinglePageViewer,
-      PDFViewer,
-      ProgressBar,
-      RenderingStates,
-      ScrollMode,
-      SimpleLinkService,
-      SpreadMode,
-      StructTreeLayerBuilder,
-      TextLayerBuilder,
-      XfaLayerBuilder,
-    });
+    expect({ ...pdfviewerAPI }).toEqual(expectedAPI);
+
+    expect(Object.keys(globalThis.pdfjsViewer).sort()).toEqual(
+      Object.keys(expectedAPI).sort()
+    );
   });
 });
diff --git a/web/pdf_viewer.component.js b/web/pdf_viewer.component.js
index e3f9e8db8..fca58eb3b 100644
--- a/web/pdf_viewer.component.js
+++ b/web/pdf_viewer.component.js
@@ -46,6 +46,31 @@ const pdfjsVersion =
 const pdfjsBuild =
   typeof PDFJSDev !== "undefined" ? PDFJSDev.eval("BUNDLE_BUILD") : void 0;
 
+globalThis.pdfjsViewer = {
+  AnnotationLayerBuilder,
+  DownloadManager,
+  EventBus,
+  FindState,
+  GenericL10n,
+  LinkTarget,
+  parseQueryString,
+  PDFFindController,
+  PDFHistory,
+  PDFLinkService,
+  PDFPageView,
+  PDFScriptingManager,
+  PDFSinglePageViewer,
+  PDFViewer,
+  ProgressBar,
+  RenderingStates,
+  ScrollMode,
+  SimpleLinkService,
+  SpreadMode,
+  StructTreeLayerBuilder,
+  TextLayerBuilder,
+  XfaLayerBuilder,
+};
+
 export {
   AnnotationLayerBuilder,
   DownloadManager,