/**
 * Sort an array in-place by one or more field specs.
 * @param {any[]} data - Array to sort (mutated in place).
 * @param {...string|Object|Array} fields - Sort field specs (same as DataSet.sortBy).
 * @returns {any[]}
 */
export function sortDataByFields(data: any[], ...fields: (string | Object | any[])[]): any[];
export function executeFused(data: any, ops: any): any;