diff --git a/.eslintrc b/.eslintrc
index 8913ec9e4..3e5732b18 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -39,6 +39,7 @@
     "import/named": "error",
     "import/no-cycle": "error",
     "import/no-empty-named-blocks": "error",
+    "import/no-commonjs": "error",
     "import/no-mutable-exports": "error",
     "import/no-self-import": "error",
     "import/no-unresolved": ["error", {
diff --git a/examples/node/getinfo.js b/examples/node/getinfo.js
index bf3c980ff..4723b4273 100644
--- a/examples/node/getinfo.js
+++ b/examples/node/getinfo.js
@@ -1,6 +1,8 @@
 /* Any copyright is dedicated to the Public Domain.
  * http://creativecommons.org/publicdomain/zero/1.0/ */
 
+/* eslint-disable import/no-commonjs */
+
 //
 // Basic node example that prints document metadata and text content.
 //
diff --git a/examples/node/pdf2png/pdf2png.js b/examples/node/pdf2png/pdf2png.js
index f0d0608ed..f62e4358b 100644
--- a/examples/node/pdf2png/pdf2png.js
+++ b/examples/node/pdf2png/pdf2png.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable import/no-commonjs */
 
 const Canvas = require("canvas");
 const assert = require("assert").strict;
diff --git a/examples/webpack/main.js b/examples/webpack/main.js
index cc1a8be3c..e23274452 100644
--- a/examples/webpack/main.js
+++ b/examples/webpack/main.js
@@ -1,6 +1,8 @@
 // Any copyright is dedicated to the Public Domain.
 // http://creativecommons.org/licenses/publicdomain/
 
+/* eslint-disable import/no-commonjs */
+
 // Hello world example for webpack.
 
 const pdfjsLib = require("pdfjs-dist");
diff --git a/examples/webpack/webpack.config.js b/examples/webpack/webpack.config.js
index 0dc1be1ae..6d421a512 100644
--- a/examples/webpack/webpack.config.js
+++ b/examples/webpack/webpack.config.js
@@ -1,3 +1,5 @@
+/* eslint-disable import/no-commonjs */
+
 const webpack = require("webpack"); // eslint-disable-line no-unused-vars
 const path = require("path");
 
diff --git a/external/dist/webpack.js b/external/dist/webpack.js
index 9b9447208..ec6546cb0 100644
--- a/external/dist/webpack.js
+++ b/external/dist/webpack.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable import/no-commonjs */
 
 "use strict";
 
diff --git a/src/pdf.worker.entry.js b/src/pdf.worker.entry.js
index 696c10819..e9709b4b5 100644
--- a/src/pdf.worker.entry.js
+++ b/src/pdf.worker.entry.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable import/no-commonjs */
 
 (typeof window !== "undefined"
   ? window
diff --git a/test/chromium/test-telemetry.js b/test/chromium/test-telemetry.js
index f03675a50..48f9d301d 100755
--- a/test/chromium/test-telemetry.js
+++ b/test/chromium/test-telemetry.js
@@ -15,11 +15,9 @@
  */
 /* eslint-disable no-var */
 
-"use strict";
-
-var assert = require("assert");
-var fs = require("fs");
-var vm = require("vm");
+import assert from "assert";
+import fs from "fs";
+import vm from "vm";
 
 var SRC_DIR = __dirname + "/../../";
 var telemetryJsPath = "extensions/chromium/telemetry.js";
diff --git a/test/stats/statcmp.js b/test/stats/statcmp.js
index bb5a2226d..e5ba75441 100644
--- a/test/stats/statcmp.js
+++ b/test/stats/statcmp.js
@@ -1,3 +1,5 @@
+/* eslint-disable import/no-commonjs */
+
 import { createRequire } from "module";
 import fs from "fs";