material-motion-runtime/dist/internal/makeCompoundKeySelector.d.ts

The core architecture for Material Motion.

/** @license
 *  Copyright 2016 - present The Material Motion Authors. 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.
 */
export declare type Dict = {
    [index: string]: any;
};
/**
 *  A compound key selector searches the object it receives for the values at
 *  the given keys.  It returns an object that represents the intersection of
 *  those values; that is, every object that has the same values for
 *  { key1, key2 } will receive the same result.  (It's idempotent.)
 *
 *  The compound key selector is designed to generate keys to be used in a Map
 *  or be the selector in an RxJS groupBy operator.
 */
export default function makeCompoundKeySelector(key1: string, key2: string): (dict: Dict) => any;