diff --git a/.github/workflows/lint-js-and-ruby.yml b/.github/workflows/lint-js-and-ruby.yml
index 0523bcf23..d6946a64a 100644
--- a/.github/workflows/lint-js-and-ruby.yml
+++ b/.github/workflows/lint-js-and-ruby.yml
@@ -53,3 +53,5 @@ jobs:
       run: yarn start lint
     - name: Check formatting
       run: yarn start format.listDifferent
+    - name: Type-check TypeScript
+      run: yarn run type-check
diff --git a/.gitignore b/.gitignore
index e28c4dbde..b9eb951cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,9 @@ npm-debug.*
 yalc.lock
 
 .byebug_history
+
+# IDE
+.idea/
+
+# TypeScript
+*.tsbuildinfo
diff --git a/tsconfig.json b/tsconfig.json
index b892db3d6..13fa3eb7a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,6 +8,7 @@
     "noImplicitAny": true,
     "outDir": "node_package/lib",
     "strict": true,
+    "incremental": true,
     "target": "es5"
   },
   "include": ["node_package/src/**/*"]