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/*! *****************************************************************************
Copyright (c) Microsoft Corporation. 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
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABLITY OR NON-INFRINGEMENT.
See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
/// <reference no-default-lib="true"/>
interface ObjectConstructor {
/**
* Groups members of an iterable according to the return value of the passed callback.
* @param items An iterable.
* @param keySelector A callback which will be invoked for each item in items.
*/
groupBy<K extends PropertyKey, T>(
items: Iterable<T>,
keySelector: (item: T, index: number) => K,
): Partial<Record<K, T[]>>;
}
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