diff --git a/tsconfig-dev.json b/tsconfig-dev.json
index b506b312a..874248c19 100644
--- a/tsconfig-dev.json
+++ b/tsconfig-dev.json
@@ -5,6 +5,7 @@
     "target": "es2017",
     "esModuleInterop":true,
     "module": "commonjs",
+    "declaration": true,
     "lib": [
       "es2015",
       "es2016",
diff --git a/tsconfig.json b/tsconfig.json
index 1e8b0ae96..7d6948986 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,7 @@
     "target": "es2017",
     "esModuleInterop":true,
     "module": "commonjs",
+    "declaration": true,
     "lib": [
       "es2015",
       "es2016",