Containers - add ability to purge/release factories; override factories in scoped

src/di/Container.ts

@@ -47,6 +47,25 @@ export class Container {
         this.registerSingleton('injector', this)
     }
 
+    /**
+     * Purge all factories and instances of the given key from this container.
+     * @param key
+     */
+    purge(key: DependencyKey): this {
+        this.factories = this.factories.filter(x => !x.match(key))
+        this.release(key)
+        return this
+    }
+
+    /**
+     * Remove all stored instances of the given key from this container.
+     * @param key
+     */
+    release(key: DependencyKey): this {
+        this.instances = this.instances.filter(x => x.key !== key)
+        return this
+    }
+
     /**
      * Register a basic instantiable class as a standard Factory with this container.
      * @param {Instantiable} dependency