import type { Match } from './types.js';
/**
 * Returns a count of matches played against each opponent platform.
 * The platform string comes directly from the MTGA log (e.g. "Mac", "Windows", "iOS", "Android").
 * Matches where the platform was not recorded are grouped under "Unknown".
 */
export declare function opponentsByPlatform(matches: Match[]): Record<string, number>;
//# sourceMappingURL=analytics.d.ts.map