/**
 * Given an array of notes per measure, NPS per measure and (optionally) when the user died
 * calculate the fastest series of unbroken '16ths' at N measures.
 *
 * 32 @ 190 will return 190,
 * 96 @ 190, user died at m40 is converted to 40 @ 190 and will return 190.
 *
 * 31 @ 190 will return null,
 * 32 @ 200 / 32 @ 220 will return 220.
 * 31 @ 200 into 1 @ 50 will return 50. (assuming no break between the streams)
 *
 * @param npsPerMeasure - The notes per second per measure.
 * @param notesPerMeasure - The notes per measure.
 * @param diedAt - Optionally, when to cut this short, such as if the user died at measure
 * 39, and still might've technically did 32 measures of stream.
 * @param measures - Optionally, override how many measures need to be unbroken. This must
 * be greater than 1. This allows you to calculate Highest 256, or similar.
 *
 * @returns The BPM of the highest N unbroken measures in this chart.
 */
export declare function calculateFromNPSPerMeasure(npsPerMeasure: Array<number>, notesPerMeasure: Array<number>, diedAt?: number | null, measures?: number): number | null;
/**
 * Given an array of bpms per measure instead of nps per measure, calculate the fastest
 * N measures of unbroken streams played. This is a thin wrapper around the NPS/Measure
 * calculator, used for humanising input.
 *
 * {@see calculateFromNPSPerMeasure}
 */
export declare function calculateFromBPMPerMeasure(bpmPerMeasure: Array<number>, notesPerMeasure: Array<number>, diedAt?: null | number, measures?: number): number | null;