diff --git a/interpreter.js b/interpreter.js
index 89f46903..5f83da04 100644
--- a/interpreter.js
+++ b/interpreter.js
@@ -3944,3 +3944,7 @@ Interpreter.prototype['nativeToPseudo'] = Interpreter.prototype.nativeToPseudo;
 Interpreter.prototype['pseudoToNative'] = Interpreter.prototype.pseudoToNative;
 // Obsolete.  Do not use.
 Interpreter.prototype['createPrimitive'] = function(x) {return x;};
+
+if (typeof exports === 'object' && typeof module === 'object') {
+  module.exports = Interpreter;
+}
diff --git a/package.json b/package.json
new file mode 100644
index 00000000..db12c623
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "js-interpreter",
+  "private": true,
+  "version": "0.0.1",
+  "description": "A sandboxed JavaScript interpreter in JavaScript.  Execute arbitrary JavaScript code line by line in isolation and safety.",
+  "main": "interpreter.js",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/NeilFraser/JS-Interpreter.git"
+  },
+  "author": "Neil Fraser",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/NeilFraser/JS-Interpreter/issues"
+  },
+  "homepage": "https://github.com/NeilFraser/JS-Interpreter#readme"
+}