diff --git a/runtime/JavaScript/package-lock.json b/runtime/JavaScript/package-lock.json
index 08444d33b9..75dcd37a11 100644
--- a/runtime/JavaScript/package-lock.json
+++ b/runtime/JavaScript/package-lock.json
@@ -2480,9 +2480,9 @@
       }
     },
     "node_modules/caniuse-lite": {
-      "version": "1.0.30001525",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001525.tgz",
-      "integrity": "sha512-/3z+wB4icFt3r0USMwxujAqRvaD/B7rvGTsKhbhSQErVrJvkZCLhgNLJxU8MevahQVH6hCU9FsHdNUFbiwmE7Q==",
+      "version": "1.0.30001600",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001600.tgz",
+      "integrity": "sha512-+2S9/2JFhYmYaDpZvo0lKkfvuKIglrx68MwOBqMGHhQsNkLjB5xtc/TGoEPs+MxjSyN/72qer2g97nzR641mOQ==",
       "dev": true,
       "funding": [
         {
diff --git a/runtime/JavaScript/package.json b/runtime/JavaScript/package.json
index 6744ebb4a8..d7e0156b13 100644
--- a/runtime/JavaScript/package.json
+++ b/runtime/JavaScript/package.json
@@ -42,7 +42,8 @@
   },
   "scripts": {
     "build": "webpack",
-    "test": "jasmine",
+    "test": "jasmine && npm run test:projects",
+    "test:projects": "bash test-projects.sh",
     "coverage": "c8 jasmine",
     "lint": "eslint src/antlr4/"
   },
@@ -51,14 +52,13 @@
   },
   "exports": {
     ".": {
+      "types": "./src/antlr4/index.d.cts",
       "node": {
-        "types": "./src/antlr4/index.d.ts",
         "import": "./dist/antlr4.node.mjs",
         "require": "./dist/antlr4.node.cjs",
         "default": "./dist/antlr4.node.mjs"
       },
       "browser": {
-        "types": "./src/antlr4/index.d.ts",
         "import": "./dist/antlr4.web.mjs",
         "require": "./dist/antlr4.web.cjs",
         "default": "./dist/antlr4.web.mjs"
diff --git a/runtime/JavaScript/spec/imports/setups/node-cjs-ts/.gitignore b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/.gitignore
new file mode 100644
index 0000000000..51e7ab2727
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/.gitignore
@@ -0,0 +1,3 @@
+/node_modules
+
+package-lock.json
\ No newline at end of file
diff --git a/runtime/JavaScript/spec/imports/setups/node-cjs-ts/index.ts b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/index.ts
new file mode 100644
index 0000000000..12ced671b2
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/index.ts
@@ -0,0 +1,5 @@
+const { CharStream } = require("antlr4");
+
+const cs = new CharStream("OK");
+
+console.log(cs.toString());
\ No newline at end of file
diff --git a/runtime/JavaScript/spec/imports/setups/node-cjs-ts/package.json b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/package.json
new file mode 100644
index 0000000000..4eb48c37b8
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "test-import-node-cjs-ts",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "type": "commonjs",
+  "scripts": {
+    "test": "bash test.sh"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "antlr4": "file:../../../.."
+  },
+  "devDependencies": {
+    "typescript": "^5.4.3"
+  }
+}
diff --git a/runtime/JavaScript/spec/imports/setups/node-cjs-ts/test.sh b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/test.sh
new file mode 100644
index 0000000000..83297693c7
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/test.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+tsconfigFiles=(
+  "tsconfig.node.commonjs.json"
+)
+
+failure=0
+
+for tsconfig in "${tsconfigFiles[@]}"; do
+  echo -n "$tsconfig "
+
+  ./node_modules/.bin/tsc -p $tsconfig || { failure=1 ; echo "FAIL tsc: $tsconfig"; }
+  result=$(node ./tsOutput/index.js)
+  [[ $result == "OK" ]] && echo "OK"
+  [[ $result != "OK" ]] && { failure=1 ; echo "FAIL runtime: $tsconfig"; }
+done
+
+exit $failure
\ No newline at end of file
diff --git a/runtime/JavaScript/spec/imports/setups/node-cjs-ts/tsconfig.node.commonjs.json b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/tsconfig.node.commonjs.json
new file mode 100644
index 0000000000..ffbcc90f97
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-cjs-ts/tsconfig.node.commonjs.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "skipLibCheck": true,
+    "outDir": "./tsOutput",
+    "module": "commonjs",
+    "moduleResolution": "node"
+  },
+  "include": ["index.ts"],
+}
diff --git a/runtime/JavaScript/spec/imports/setups/node-esm-ts/.gitignore b/runtime/JavaScript/spec/imports/setups/node-esm-ts/.gitignore
new file mode 100644
index 0000000000..51e7ab2727
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-esm-ts/.gitignore
@@ -0,0 +1,3 @@
+/node_modules
+
+package-lock.json
\ No newline at end of file
diff --git a/runtime/JavaScript/spec/imports/setups/node-esm-ts/index.ts b/runtime/JavaScript/spec/imports/setups/node-esm-ts/index.ts
new file mode 100644
index 0000000000..86e19f06ed
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-esm-ts/index.ts
@@ -0,0 +1,5 @@
+import { CharStream } from "antlr4";
+
+const cs = new CharStream("OK");
+
+console.log(cs.toString());
\ No newline at end of file
diff --git a/runtime/JavaScript/spec/imports/setups/node-esm-ts/package.json b/runtime/JavaScript/spec/imports/setups/node-esm-ts/package.json
new file mode 100644
index 0000000000..5573527365
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-esm-ts/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "test-import-node-esm-ts",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "test": "bash test.sh"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "antlr4": "file:../../../.."
+  },
+  "devDependencies": {
+    "typescript": "^5.4.3"
+  }
+}
diff --git a/runtime/JavaScript/spec/imports/setups/node-esm-ts/test.sh b/runtime/JavaScript/spec/imports/setups/node-esm-ts/test.sh
new file mode 100644
index 0000000000..772e4a3927
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-esm-ts/test.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+tsconfigFiles=(
+  "tsconfig.node16.json"
+  "tsconfig.bundler.es2022.json"
+)
+
+failure=0
+
+for tsconfig in "${tsconfigFiles[@]}"; do
+  echo -n "$tsconfig "
+
+  ./node_modules/.bin/tsc -p $tsconfig || { failure=1 ; echo "FAIL tsc: $tsconfig"; }
+  result=$(node ./tsOutput/index.js)
+  [[ $result == "OK" ]] && echo "OK"
+  [[ $result != "OK" ]] && { failure=1 ; echo "FAIL runtime: $tsconfig"; }
+done
+
+exit $failure
\ No newline at end of file
diff --git a/runtime/JavaScript/spec/imports/setups/node-esm-ts/tsconfig.bundler.es2022.json b/runtime/JavaScript/spec/imports/setups/node-esm-ts/tsconfig.bundler.es2022.json
new file mode 100644
index 0000000000..edcacb220d
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-esm-ts/tsconfig.bundler.es2022.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "skipLibCheck": true,
+    "outDir": "./tsOutput",
+    "module": "es2022",
+    "moduleResolution": "bundler"
+  },
+  "include": ["index.ts"],
+}
diff --git a/runtime/JavaScript/spec/imports/setups/node-esm-ts/tsconfig.node16.json b/runtime/JavaScript/spec/imports/setups/node-esm-ts/tsconfig.node16.json
new file mode 100644
index 0000000000..badf533fad
--- /dev/null
+++ b/runtime/JavaScript/spec/imports/setups/node-esm-ts/tsconfig.node16.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "skipLibCheck": true,
+    "outDir": "./tsOutput",
+    "module": "node16",
+    "moduleResolution": "node16"
+  },
+  "include": ["index.ts"],
+}
diff --git a/runtime/JavaScript/test-projects.sh b/runtime/JavaScript/test-projects.sh
new file mode 100644
index 0000000000..2e548d5ce8
--- /dev/null
+++ b/runtime/JavaScript/test-projects.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+cd spec/imports/setups/node-esm-ts
+npm run test
+cd ../node-cjs-ts
+npm run test
\ No newline at end of file