/**
 * Splits `array` into consecutive sub-arrays of length `chunkSize` (the last chunk
 * may be smaller). Fractional sizes are truncated to an integer. Returns an empty
 * array if `array` is empty or if the (truncated) `chunkSize` is not a positive
 * finite number.
 */
export declare function chunk<T>(array: readonly T[], chunkSize: number): T[][];