diff --git a/examples/browserify/main.js b/examples/browserify/main.js
index 6c4e144b1..8554ffc9b 100644
--- a/examples/browserify/main.js
+++ b/examples/browserify/main.js
@@ -5,7 +5,7 @@
 
 var pdfjsLib = require('pdfjs-dist');
 
-var pdfPath = '../helloworld/helloworld.pdf';
+var pdfPath = '../learning/helloworld.pdf';
 
 // Setting worker path to worker bundle.
 pdfjsLib.GlobalWorkerOptions.workerSrc =
diff --git a/examples/webpack/main.js b/examples/webpack/main.js
index f8bfd179b..bc21b5f32 100644
--- a/examples/webpack/main.js
+++ b/examples/webpack/main.js
@@ -5,7 +5,7 @@
 
 var pdfjsLib = require('pdfjs-dist');
 
-var pdfPath = '../helloworld/helloworld.pdf';
+var pdfPath = '../learning/helloworld.pdf';
 
 // Setting worker path to worker bundle.
 pdfjsLib.GlobalWorkerOptions.workerSrc =
diff --git a/gulpfile.js b/gulpfile.js
index 6558a6618..bbe9fa7d6 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1320,7 +1320,6 @@ gulp.task('dist-pre', gulp.series('generic', 'components', 'image_decoders',
     bugs: DIST_BUGS_URL,
     license: DIST_LICENSE,
     dependencies: {
-      'node-ensure': '^0.0.0', // shim for node for require.ensure
       'worker-loader': '^2.0.0', // used in external/dist/webpack.json
     },
     peerDependencies: {
@@ -1330,7 +1329,6 @@ gulp.task('dist-pre', gulp.series('generic', 'components', 'image_decoders',
       'fs': false,
       'http': false,
       'https': false,
-      'node-ensure': false,
       'url': false,
       'zlib': false,
     },
diff --git a/package-lock.json b/package-lock.json
index 9442257c2..78c1bb848 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6682,12 +6682,6 @@
       "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==",
       "dev": true
     },
-    "node-ensure": {
-      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/node-ensure/-/node-ensure-0.0.0.tgz",
-      "integrity": "sha1-7K52QVDemYYexcgQ/V0Jaxg5Mqc=",
-      "dev": true
-    },
     "node-libs-browser": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/node-libs-browser/-/node-libs-browser-2.1.0.tgz",
diff --git a/package.json b/package.json
index 87bce96c0..46fdf0801 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,6 @@
     "jstransformer-markdown-it": "^2.1.0",
     "merge-stream": "^1.0.1",
     "mkdirp": "^0.5.1",
-    "node-ensure": "^0.0.0",
     "prettier": "^1.19.1",
     "rimraf": "^2.7.1",
     "streamqueue": "^1.1.2",
diff --git a/src/display/api.js b/src/display/api.js
index b83292872..e26265e72 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* globals requirejs, __non_webpack_require__ */
+/* globals __non_webpack_require__ */
 /* eslint no-var: error */
 
 /**
@@ -34,6 +34,7 @@ import { FontFaceObject, FontLoader } from './font_loader';
 import { apiCompatibilityParams } from './api_compatibility';
 import { CanvasGraphics } from './canvas';
 import { GlobalWorkerOptions } from './worker_options';
+import { isNodeJS } from '../shared/is_node';
 import { MessageHandler } from '../shared/message_handler';
 import { Metadata } from './metadata';
 import { PDFDataTransportStream } from './transport_stream';
@@ -47,28 +48,12 @@ let fallbackWorkerSrc;
 
 let fakeWorkerFilesLoader = null;
 if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
-  let useRequireEnsure = false;
-  // For GENERIC build we need to add support for different fake file loaders
-  // for different frameworks.
-  if (typeof window === 'undefined') {
-    // node.js - disable worker and set require.ensure.
+  if (isNodeJS && typeof __non_webpack_require__ === 'function') {
+    // Workers aren't supported in Node.js, force-disabling them there.
     isWorkerDisabled = true;
-    if (typeof __non_webpack_require__.ensure === 'undefined') {
-      __non_webpack_require__.ensure = __non_webpack_require__('node-ensure');
-    }
-    useRequireEnsure = true;
-  } else if (typeof __non_webpack_require__ !== 'undefined' &&
-             typeof __non_webpack_require__.ensure === 'function') {
-    useRequireEnsure = true;
-  }
-  if (typeof requirejs !== 'undefined' && requirejs.toUrl) {
-    fallbackWorkerSrc = requirejs.toUrl('pdfjs-dist/build/pdf.worker.js');
-  }
-  const dynamicLoaderSupported =
-    typeof requirejs !== 'undefined' && requirejs.load;
-  fakeWorkerFilesLoader = useRequireEnsure ? (function() {
-    return new Promise(function(resolve, reject) {
-      __non_webpack_require__.ensure([], function() {
+
+    fakeWorkerFilesLoader = function() {
+      return new Promise(function(resolve, reject) {
         try {
           let worker;
           if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('LIB')) {
@@ -80,22 +65,9 @@ if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
         } catch (ex) {
           reject(ex);
         }
-      }, reject, 'pdfjsWorker');
-    });
-  }) : dynamicLoaderSupported ? (function() {
-    return new Promise(function(resolve, reject) {
-      requirejs(['pdfjs-dist/build/pdf.worker'], function(worker) {
-        try {
-          resolve(worker.WorkerMessageHandler);
-        } catch (ex) {
-          reject(ex);
-        }
-      }, reject);
-    });
-  }) : null;
-
-  if (!fallbackWorkerSrc && typeof document === 'object' &&
-      'currentScript' in document) {
+      });
+    };
+  } else if (typeof document === 'object' && 'currentScript' in document) {
     const pdfjsFilePath = document.currentScript && document.currentScript.src;
     if (pdfjsFilePath) {
       fallbackWorkerSrc =
@@ -1557,7 +1529,7 @@ const PDFWorker = (function PDFWorkerClosure() {
 
     const mainWorkerMessageHandler = getMainThreadWorkerMessageHandler();
     if (mainWorkerMessageHandler) {
-      // The worker was already loaded using a `<script>` tag.
+      // The worker was already loaded using e.g. a `<script>` tag.
       fakeWorkerFilesLoadedCapability.resolve(mainWorkerMessageHandler);
       return fakeWorkerFilesLoadedCapability.promise;
     }