| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| import {OperatorFunction} from 'rxjs'; |
| import {filter} from 'rxjs/operators'; |
| |
| type Action = {type: string}; |
| export function ofType<T extends string, U extends Action, V extends Extract<U, {type: T}>>(type: T): OperatorFunction<U, V> |
| export function ofType<U extends Action>(type): OperatorFunction<U, U> { |
| return filter((action: U): boolean => type === action.type); |
| } |
| |
