BREAKING CHANGE: native implementation returns tag manager instance

src/__tests__/native-entry.spec.ts

@@ -19,22 +19,19 @@ describe("NativeEntry", () => {
       expect(() => native.initialize({ gtmId: null })).not.toThrowError()
     });
 
-    it("should initialize `TagManager` in the global namespace by default", () => {
-      native.initialize({ gtmId: '1234' })
-      expect((global as any).TagManager).toBeDefined()
+    it("should return an instanciated TagManager when called", () => {
+      const tagManager = native.initialize({ gtmId: '1234' })
+      expect(tagManager).toBeTruthy()
     });
 
-    it("should initialize the TagManager in the global namespace when variable defined", () => {});
-
     it("should install GTM once when called multiple times", () => {
 
-      native.initialize({ gtmId: "123" })
+      const tagManager1 = native.initialize({ gtmId: "123" })
+      expect(tagManager1).toBeTruthy()
 
-      expect((global as any).TagManager).toBeDefined()
-      delete (global as any).TagManager
+      const tagManager2 = native.initialize({ gtmId: "123" })
+      expect(tagManager2).toBeFalsy()
 
-      native.initialize({ gtmId: "1234" })
-      expect((global as any).TagManager).not.toBeDefined()
     });
 
   });

src/native-entry.ts

@@ -29,10 +29,10 @@ const initialize = (options: NativeOptions) => {
       getScriptTagWithSrc(tagManager.getScriptUrl(), true)
     );
 
-    const variableName = options.TagManagerVariableName || "TagManager";
-    (window as any)[variableName] = tagManager;
-
     (window as any).vgtmInstalled = true;
+
+    return tagManager;
+
   } catch (error) {
     warn(error);
   }