diff --git a/.gitignore b/.gitignore
index b5b01b1..98d9f7f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,8 @@ docs
 matter-doc-theme
 build/matter-dev.js
 build/matter-dev.min.js
+build/matter.dev.js
+build/matter.dev.min.js
 demo/js/lib/matter-dev.js
 demo/js/Examples.min.js
 examples/build
diff --git a/package.json b/package.json
index 0a5c29a..eadf1d5 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,8 @@
     "serve": "webpack-dev-server --no-cache --mode development --config webpack.demo.config.js",
     "watch": "nodemon --watch webpack.demo.config.js --exec \"npm run serve\"",
     "build": "webpack --mode=production --no-hot --no-watch & webpack --mode=production --no-hot --no-watch --env.MINIMIZE",
-    "build-alpha": "webpack --mode=production --env.ALPHA & webpack --mode=production --env.MINIMIZE --env.ALPHA",
+    "build-alpha": "webpack --mode=production --no-hot --no-watch --env.KIND=alpha & webpack --mode=production --no-hot --no-watch --env.MINIMIZE --env.KIND=alpha",
+    "build-dev": "webpack --mode=production --no-hot --no-watch --env.KIND=dev & webpack --mode=production --no-hot --no-watch --env.MINIMIZE --env.KIND=dev",
     "build-demo": "rm -rf ./demo/js && webpack --no-hot --no-watch --config webpack.demo.config.js --mode=production && webpack --no-hot --no-watch --config webpack.demo.config.js --mode=production --env.MINIMIZE",
     "lint": "eslint 'src/**/*.js' 'demo/src/**/*.js' 'examples/*.js' 'webpack.*.js'",
     "doc": "yuidoc --config yuidoc.json --project-version $npm_package_version",
@@ -53,7 +54,7 @@
     "test-all": "jest --no-cache",
     "test-save": "SAVE=true npm run test-node",
     "test-watch": "npm run test-node -- --watch",
-    "test-node": "node --expose-gc node_modules/.bin/jest --no-cache --runInBand ./test/Examples.spec.js",
+    "test-node": "npm run build-dev && node --expose-gc node_modules/.bin/jest --no-cache --runInBand ./test/Examples.spec.js",
     "test-browser": "node --expose-gc node_modules/.bin/jest --no-cache --runInBand ./test/Browser.spec.js",
     "changelog": "conventional-changelog -i CHANGELOG.md -s -r",
     "release": "npm version --no-git-tag-version",
diff --git a/test/ExampleWorker.js b/test/ExampleWorker.js
index 9017132..8a9b074 100644
--- a/test/ExampleWorker.js
+++ b/test/ExampleWorker.js
@@ -21,7 +21,7 @@ const reset = M => {
 
 const mock = require('mock-require');
 const { engineCapture } = require('./TestTools');
-const MatterDev = stubBrowserFeatures(require('../src/module/main'));
+const MatterDev = stubBrowserFeatures(require('../build/matter.dev'));
 const MatterBuild = stubBrowserFeatures(require('../build/matter'));
 const Example = require('../examples/index');
 
diff --git a/test/TestTools.js b/test/TestTools.js
index 4f13f41..67ce103 100644
--- a/test/TestTools.js
+++ b/test/TestTools.js
@@ -224,7 +224,7 @@ const logReport = (captures, version) => {
         }
     }
 
-    return `Output logs from ${color(version, colors.Yellow)} version on last run\n\n` 
+    return `Output logs from ${color(version, colors.Yellow)} build on last run\n\n` 
         + (report ? report : '  None\n');
 };
 
diff --git a/webpack.config.js b/webpack.config.js
index 3f8764c..885c8f1 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -9,18 +9,17 @@ const execSync = require('child_process').execSync;
 
 module.exports = (env = {}) => {
     const minimize = env.MINIMIZE || false;
-    const alpha = env.ALPHA || false;
+    const kind = env.KIND || null;
     const sizeThreshold = minimize ? 100 * 1024 : 512 * 1024;
 
     const commitHash = execSync('git rev-parse --short HEAD').toString().trim();
-    const version = !alpha ? pkg.version : `${pkg.version}-alpha+${commitHash}`;
+    const version = !kind ? pkg.version : `${pkg.version}-${kind}+${commitHash}`;
     const license = fs.readFileSync('LICENSE', 'utf8');
     const resolve = relativePath => path.resolve(__dirname, relativePath);
     
-    const alphaInfo = 'Experimental pre-release build.\n  ';
     const banner = 
 `${pkg.name} ${version} by @liabru
-${alpha ? alphaInfo : ''}${pkg.homepage}
+${kind ? 'Experimental pre-release build.\n  ' : ''}${pkg.homepage}
 License ${pkg.license}${!minimize ? '\n\n' + license : ''}`;
 
     return {
@@ -32,7 +31,7 @@ License ${pkg.license}${!minimize ? '\n\n' + license : ''}`;
             umdNamedDefine: true,
             globalObject: 'this',
             path: resolve('./build'),
-            filename: `[name]${alpha ? '.alpha' : ''}${minimize ? '.min' : ''}.js`
+            filename: `[name]${kind ? '.' + kind : ''}${minimize ? '.min' : ''}.js`
         },
         optimization: { minimize },
         performance: {