node_modules.graphql.subscription.asyncIteratorReject.js.flow Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of apollo-client-maven-plugin Show documentation

Maven plugin for generating graphql clients

There is a newer version: 3.3.1

Show newest version

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict
 */

import { $$asyncIterator } from 'iterall';

/**
 * Given an error, returns an AsyncIterable which will fail with that error.
 *
 * Similar to Promise.reject(error)
 */
export default function asyncIteratorReject(error: Error): AsyncIterator {
  let isComplete = false;
  /* TODO: Flow doesn't support symbols as keys:
     https://github.com/facebook/flow/issues/3258 */
  return ({
    next() {
      const result = isComplete
        ? Promise.resolve({ value: undefined, done: true })
        : Promise.reject(error);
      isComplete = true;
      return result;
    },
    return() {
      isComplete = true;
      return Promise.resolve({ value: undefined, done: true });
    },
    throw() {
      isComplete = true;
      return Promise.reject(error);
    },
    [$$asyncIterator]() {
      return this;
    },
  }: any);
}