/**
 * Calculate DDR Flare for a score.
 *
 * @param internalChartLevel - The internal decimal level of the chart the score was achieved on.
 * @param flareLevel - The Flare level chosen to play the song. Goes from 0 ("Flare 0" or no Flare) to 10 ("Flare EX")
 */
export declare function calculate(internalChartLevel: number, flareLevel: number): number;