diff --git a/package.json b/package.json
index 790a9ff..25c229a 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "dependency-check": "dependency-check . --unused --no-dev && dependency-check . --missing --no-dev",
     "lint": "tslint -p tsconfig.json 'src/**/*.ts'",
     "postpublish": "git push",
-    "preversion": "git pull && npm run verify && npm run bundle",
+    "preversion": "git pull && npm run clean && npm run verify && npm run bundle",
     "start": "jest --watch",
     "test": "tsc && jest",
     "verify": "npm run lint && npm run build && npm run coverage && npm run dependency-check",
diff --git a/tsconfig.json b/tsconfig.json
index 0561b26..5f3c536 100755
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,9 @@
   },
   "buildOnSave": false,
   "compileOnSave": false,
+  "compilerOptions": {
+    "noEmit": true
+  },
   "include": [
     "src"
   ]