/**
 * Copyright 2019 Google 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.
 */ import { Observable } from "../types.js" ; import { external , NextFunc } from "./external.js" ; /**
 * Creates an observable from a function that gets passed the
 * observable's `next()` function.
 *
 * See also  external .
 *
 *  typeparam param f returns export function fromNext < T > ( f ) { const { observable , next } = external < T > ( ) ; f ( next ) ; return observable ; }