es-toolkit
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A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.
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text/typescript
//#region src/bigint/maxBy.d.ts
/**
* Finds the element in an array that has the largest bigint value returned by `getValue`.
*
* This function maps every element to a bigint and returns the element with the largest value.
* If several elements tie, the first one is returned.
*
* @template T - The type of elements in the array.
* @param items - An array of elements to search.
* @param getValue - A function that maps an element to the bigint to compare by.
* @returns The element with the largest mapped bigint.
* @throws {RangeError} If the array is empty, since there is no element to return.
*
* @example
* const accounts = [{ balance: 10n }, { balance: 30n }, { balance: 20n }];
* const result = maxBy(accounts, account => account.balance);
* // result will be { balance: 30n }
*/
declare function maxBy<T>(items: readonly T[], getValue: (element: T, index: number, array: readonly T[]) => bigint): T;
//#endregion
export { maxBy };