diff --git a/package.json b/package.json
index dcf2e92..413414d 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "A convenient event tracker API which sends events to multiple consumers",
   "main": "dist/siddi.js",
   "scripts": {
-    "build": "MATOMO_OFFSET=3 webpack --mode=production",
+    "build": "tsc",
     "build:dev": "MATOMO_OFFSET=3 webpack --mode=development",
     "build:prod": "MATOMO_OFFSET=0 webpack --mode=production",
     "lint": "prettier --print-width 120 --single-quote --trailing-comma es5 --write \"src/**/*.ts\"",
diff --git a/src/utils.ts b/src/utils.ts
index 9d2ee97..1baebf7 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -7,7 +7,7 @@ const prepareMatomoDimensions = (eventProperties: any) => {
     if (!regexParts[1]) {
       return { ...evProps, [k]: v };
     }
-    return { ...evProps, [`dimension${parseInt(regexParts[1]) + WEBPACK_INJECT___MATOMO_DIMENSION_OFFSET}`]: v };
+    return { ...evProps, [`dimension${parseInt(regexParts[1]) + 3}`]: v };
   }, {});
 };
 
diff --git a/tsconfig.json b/tsconfig.json
index b5d7764..cba7db6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "target": "es5",
-    "module": "commonjs",
+    "module": "es2015",
     "lib": [ "dom", "es2015", "es2017" ],
     "declaration": true,
     "sourceMap": true,