diff --git a/.travis.yml b/.travis.yml
index 8ac5931..11ef428 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,11 +18,13 @@ notifications:
 jobs:
   include:
   - stage: test
+    script: yarn test
     if: type IN (push, pull_request)
   - stage: deploy
     if: tag IS present
     deploy:
       skip_cleanup: true
+      script: yarn build
       provider: npm
       email: lucien.benie@gmail.com
       api_key:
diff --git a/package.json b/package.json
index e89e26b..abbba97 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,7 @@
   },
   "license": "MIT",
   "scripts": {
+    "build": "gulp typescript",
     "test": "jest --config jest.config.js --colors && stryker run",
     "test:dev": "cross-env BABEL_ENV=test jest --config jest.config.js --watch",
     "changelog": "conventional-changelog  -i CHANGELOG.md -s",
diff --git a/tsconfig.json b/tsconfig.json
index a9d28dd..f76eee6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,7 +13,11 @@
       "dom.iterable",
       "scripthost",
     ],
-    "baseUrl": "."
+    "baseUrl": ".",
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true
   },
   "include": [
     "lib/**/*.ts",