/*!
 * Copyright (c) 2017-2018 by The Funfix Project Developers.
 * Some 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.
 */
/**
 * We don't need the full power of JS's iterators, just a way
 * to traverse data structures.
 *
 * @hidden
 */
export interface IteratorLike<A> {
    next(): {
        done: boolean;
        value?: A;
    };
}
/**
 * Reusable empty `IteratorLike` reference.
 *
 * @hidden
 */
export declare const emptyIteratorRef: IteratorLike<never>;
/**
 * Given an array or an `Iterable`, returns a simple iterator type
 * that we can use to traverse the given list lazily.
 *
 * @hidden
 */
export declare function iteratorOf<A>(list: A[] | Iterable<A>): IteratorLike<A>;