//#region src/collection/groupBy.d.ts
/**
 * Creates an object composed from the elements of collection grouped by the results of running each element thru iteratee
 * @param collection - The collection to iterate over
 * @param iteratee - The iteratee to transform keys
 * @returns Returns the composed aggregate object
 * @example
 * const users = [
 *   { name: 'John', age: 30 },
 *   { name: 'Jane', age: 30 },
 *   { name: 'Bob', age: 25 }
 * ];
 * groupBy(users, 'age');
 * // => { '30': [{name: 'John', age: 30}, {name: 'Jane', age: 30}], '25': [{name: 'Bob', age: 25}] }
 */
declare function groupBy<T>(collection: T[], iteratee: ((item: T, index: number) => string | number) | string): Record<string | number, T[]>;
//#endregion
export { groupBy };
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