Prevent JS/TS diff in Travis

.travis.yml

@@ -7,6 +7,8 @@ matrix:
   include:
     - node_js: "lts/*"
       env: TEST_SUITE=format:ci
+    - node_js: "lts/*"
+      env: TEST_SUITE=gitdiff:ci
     - node_js: "lts/*"
       env: TEST_SUITE=lint
     - node_js: "lts/*"

package.json

@@ -21,6 +21,7 @@
     "coverage": "npm run build && npm run nobuild:coverage",
     "format": "npm run prettier -- --write",
     "format:ci": "npm run prettier -- --check",
+    "gitdiff:ci": "npm run build && git diff --exit-code",
     "integration": "npm run build && npm run nobuild:integration",
     "lint": "tslint -p tsconfig.json -c tslint.json",
     "nobuild:coverage-report": "nyc report --reporter=lcov",