added whole content

content/Frontend/Vue/Adding global properties to component.md

@@ -0,0 +1,17 @@
+The topic's fully covered in the [official documentation](https://vuejs.org/guide/typescript/options-api.html#augmenting-global-properties) and in [Add global variable to window](Add%20global%20variable%20to%20window.md).
+
+For example, you want to add global `$http` and `$translate` services to all of project's components:
+
+```typescript
+// ~/index.d.ts or ~/custom.d.ts
+
+import axios from 'axios'
+
+declare module 'vue' {
+  interface ComponentCustomProperties {
+    $http: typeof axios
+    $translate: (key: string) => string
+  }
+}
+```
+