text: /**
   * Copyright (c) 2016-2018 Pivotal Software Inc, All Rights Reserved.
   *
   * Licensed 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.
   *
   * @flow
   */
  
  import { Subscription, Subscriber } from './reactivestreams-spec';
  import { SH } from './subscription';
  
  export class FluxMapSubscriber<T, R> implements Subscriber<T>, Subscription {
    _actual: Subscriber<R>;
    _mapper: (t: T) => R;
  
    _s: Subscription;
    _done: boolean;
  
    constructor(actual: Subscriber<R>, mapper: (t: T) => R) {
      this._actual = actual;
      this._mapper = mapper;
    }
  
    onSubscribe(s: Subscription) {
      if (SH.validSubscription(this._s, s)) {
        this._s = s;
  
        this._actual.onSubscribe(this);
      }
    }
  
    onNext(t: T) {
      if (this._done) {
        return;
      }
  
      let v;
      try {
        v = this._mapper(t);
      } catch (ex) {
        this._s.cancel();
        this.onError(ex);
        return;
      }
  
      this._actual.onNext(v);
    }
  
    onError(t: Error) {
      if (this._done) {
        console.log(t);
        return;
      }
      this._done = true;
      this._actual.onError(t);
    }
  
    onComplete() {
      if (this._done) {
        return;
      }
      this._done = true;
      this._actual.onComplete();
    }
  
    request(n: number) {
      this._s.request(n);
    }
  
    cancel() {
      this._s.cancel();
    }
  }
  
  export class FluxHideSubscriber<T> implements Subscriber<T>, Subscription {
    _actual: Subscriber<T>;
  
    _s: Subscription;
  
    constructor(actual: Subscriber<T>) {
      this._actual = actual;
    }
  
    onSubscribe(s: Subscription) {
      if (SH.validSubscription(this._s, s)) {
        this._s = s;
  
        this._actual.onSubscribe(this);
      }
    }
  
    onNext(t: T) {
      this._actual.onNext(t);
    }
  
    onError(t: Error) {
      this._actual.onError(t);
    }
  
    onComplete() {
      this._actual.onComplete();
    }
  
    request(n: number) {
      this._s.request(n);
    }
  
    cancel() {
      this._s.cancel();
    }
  }
  