chore: reverse the removal of “declarations”

Author: VladimirAmiorkov

.gitignore

@@ -17,6 +17,9 @@ src/**/*.d.ts
 !demo/karma.conf.js
 !demo/app/tests/*.js
 demo/platforms/
+demo/outputs/
+demo-angular/outputs/
+demo-vue/outputs/
 demo-angular/platforms/
 demo-vue/platforms/
 !demo/e2e-tests/*

src/tsconfig.json

@@ -1,5 +1,6 @@
 {
     "compilerOptions": {
+        "declaration": true,
         "target": "es5",
         "module": "commonjs",
         "removeComments": true,
@@ -31,4 +32,4 @@
         "hooks"
     ],
     "compileOnSave": false
-}
+}