diff --git a/.github/workflows/hosted.yml b/.github/workflows/hosted.yml
index 6bd76da434..49b2a39267 100644
--- a/.github/workflows/hosted.yml
+++ b/.github/workflows/hosted.yml
@@ -242,11 +242,11 @@ jobs:
         python-version: '3.x'
         architecture: 'x64'
 
-    - name: Set up Node 14
+    - name: Set up Node 16
       if: (matrix.target == 'javascript') || (matrix.target == 'typescript')
-      uses: actions/setup-node@v3.5.1
+      uses: actions/setup-node@v3.6.0
       with:
-        node-version: '14'
+        node-version: '16'
 
     - name: Setup Dotnet
       if: matrix.target == 'csharp'
diff --git a/runtime/JavaScript/package-lock.json b/runtime/JavaScript/package-lock.json
index 0549e2a891..e7836705cc 100644
--- a/runtime/JavaScript/package-lock.json
+++ b/runtime/JavaScript/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "antlr4",
-  "version": "4.12.0-beta.1",
+  "version": "4.12.0-beta.4",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "antlr4",
-      "version": "4.12.0-beta.1",
+      "version": "4.12.0-beta.4",
       "license": "BSD-3-Clause",
       "devDependencies": {
         "@babel/core": "^7.19.1",
diff --git a/runtime/JavaScript/package.json b/runtime/JavaScript/package.json
index 04bec6730d..a97492c142 100644
--- a/runtime/JavaScript/package.json
+++ b/runtime/JavaScript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "antlr4",
-  "version": "4.12.0-beta.4",
+  "version": "4.12.0-beta.5",
   "type": "module",
   "description": "JavaScript runtime for ANTLR4",
   "main": "dist/antlr4.js",
@@ -20,9 +20,9 @@
   "homepage": "https://github.com/antlr/antlr4",
   "devDependencies": {
     "@babel/core": "^7.19.1",
+    "@babel/eslint-parser": "^7.19.1",
     "@babel/preset-env": "^7.19.4",
     "@types/node": "^18.7.23",
-    "@babel/eslint-parser": "^7.19.1",
     "babel-loader": "^8.2.5",
     "compression-webpack-plugin": "^10.0.0",
     "eslint": "^8.23.1",
@@ -45,8 +45,6 @@
     "node": ">=16"
   },
   "browser": {
-    "fs": false,
-    "net": false,
-    "module": false
+    "fs": false
   }
 }
diff --git a/runtime/JavaScript/src/antlr4/FileStream.js b/runtime/JavaScript/src/antlr4/FileStream.js
index 942ffa0706..55c20e717f 100644
--- a/runtime/JavaScript/src/antlr4/FileStream.js
+++ b/runtime/JavaScript/src/antlr4/FileStream.js
@@ -4,7 +4,12 @@
  */
 
 import InputStream from './InputStream.js';
-import fs from "fs";
+const isNode =
+	typeof process !== "undefined" &&
+	process.versions != null &&
+	process.versions.node != null;
+// use eval to fool webpack and mocha
+const fs = isNode ? await eval("import('fs')") : null;
 
 /**
  * This is an InputStream that is loaded from a file all at once
@@ -12,6 +17,8 @@ import fs from "fs";
  */
 export default class FileStream extends InputStream {
 	constructor(fileName, decodeToUnicodeCodePoints) {
+		if(!isNode)
+			throw new Error("FileStream is only available when running in Node!");
 		const data = fs.readFileSync(fileName, "utf8");
 		super(data, decodeToUnicodeCodePoints);
 		this.fileName = fileName;
diff --git a/runtime/JavaScript/webpack.config.cjs b/runtime/JavaScript/webpack.config.cjs
index a752c70e4e..a2b64a2763 100644
--- a/runtime/JavaScript/webpack.config.cjs
+++ b/runtime/JavaScript/webpack.config.cjs
@@ -15,12 +15,10 @@ module.exports = {
     resolve: {
         extensions: [ '.js'],
         fallback: {
-            module: false,
-            net: false,
             fs: false
         }
     },
-    target: "node16",
+    target: "web",
     module: {
         rules: [{
             test: /\.js$/,