/**
 * Calculates maimai rate for a score.
 *
 * @param score - The percentage score to calculate the rate for.
 * @param maxScore - The max percentage score attainable of the chart the score was achieved on.
 * @param internalChartLevel - The internal decimal level of the chart the score was achieved on.
 */
export declare function calculate(score: number, maxScore: number, internalChartLevel: number): number;