feat: allow to remove lifecycle listeners

lib/__tests__/remove-lifecycle-listener-test.ts

@@ -0,0 +1,32 @@
+// tslint:disable: no-implicit-dependencies
+import { assert } from 'chai';
+import { TSDI, component } from '..';
+
+describe('TSDI', () => {
+  let tsdi: TSDI;
+
+  beforeEach(() => {
+    tsdi = new TSDI();
+  });
+
+  afterEach(() => {
+    tsdi.close();
+  });
+  it('should allow to remove lifecycle listeners', () => {
+    @component
+    class Component {}
+    tsdi.register(Component);
+
+    const removeLifecycleListener = tsdi.addLifecycleListener({
+      onCreate(comp: any): void {
+        if (comp instanceof Component) {
+          assert.fail();
+        }
+      },
+    });
+
+    removeLifecycleListener();
+
+    tsdi.get(Component);
+  });
+});

lib/tsdi.ts

@@ -150,11 +150,20 @@ export class TSDI {
     this.parent = parent;
   }
 
-  public addLifecycleListener(lifecycleListener: LifecycleListener): void {
+  public addLifecycleListener(
+    lifecycleListener: LifecycleListener
+  ): () => void {
     this.lifecycleListeners.push(lifecycleListener);
     Object.keys(this.instances).forEach((idx) =>
       this.notifyOnCreate(this.instances[parseInt(idx, 10)])
     );
+
+    return () => {
+      const idx = this.lifecycleListeners.findIndex(
+        (l) => l === lifecycleListener
+      );
+      this.lifecycleListeners.splice(idx, 1);
+    };
   }
 
   private notifyOnCreate(component: any): void {