diff --git a/package.json b/package.json
index d00f775..47c5dac 100644
--- a/package.json
+++ b/package.json
@@ -4,10 +4,11 @@
   "description": "Infinitely generating linked list with memoisation (or an n-generator)",
   "main": "es5/infinity.min.js",
   "scripts": {
-    "test": "jasmine",
-    "build": "./build.sh && jasmine",
-    "prepublishOnly": "npm run build",
-    "release": "npm run build && npm publish"
+    "build": "./build.sh",
+    "test:es6": "NODE_ENV=development jasmine",
+    "test:es5": "NODE_ENV=production npm run build && jasmine",
+    "test": "npm run test:es6 && npm run test:es5",
+    "prepublishOnly": "npm test"
   },
   "keywords": [
     "infinite",
diff --git a/spec/spec.js b/spec/spec.js
index 8e2a1f3..650d43d 100644
--- a/spec/spec.js
+++ b/spec/spec.js
@@ -1,10 +1,11 @@
 'use strict';
 
-const InfiniteList = require('../es6');
+const path = '..' + (process.env.NODE_ENV === 'development' ? '/es6' : '/es5/infinity.min.js');
 
-const {
-	InfiniteListItem
-} = require('..');
+const InfiniteList = require(path);
+const { InfiniteListItem } = require(path);
+
+console.log(`\nTesting ${path}\n`);
 
 String.prototype.trimify = function() {
 	return this.replace(/\s/g, '');
@@ -40,7 +41,7 @@ describe("InfiniteList", () => {
 
 	it("Should be true", () => {
 		const Infinite = new InfiniteList(0, x => x + 2);
-		expect((Infinite.get(5)) instanceof InfiniteListItem).toBe(true);
+		expect(Infinite.get(5) instanceof InfiniteListItem).toBe(true);
 	});
 
 	it("Should be 22", () => {