import { Evented } from "../events.js";
import type { Orihon } from "../map.js";
export interface PerformanceSnapshot {
    timestamp: number;
    fps: number | null;
    frameMs: number | null;
    domNodes: number;
    layers: number;
    controls: number;
    tiles: {
        active: number;
        retained: number;
        cached: number;
    };
    memory?: {
        usedJSHeapSize?: number;
        totalJSHeapSize?: number;
        jsHeapSizeLimit?: number;
    };
}
export interface PerformanceInspectorOptions {
    sampleFrames?: number;
    includeMemory?: boolean;
}
export interface PerformanceEventMap {
    measure: {
        snapshot: PerformanceSnapshot;
    };
    sample: {
        snapshot: PerformanceSnapshot;
    };
}
export declare class PerformanceInspector extends Evented<PerformanceEventMap> {
    #private;
    readonly map: Orihon;
    readonly options: Required<PerformanceInspectorOptions>;
    _running: boolean;
    _frame: number;
    constructor(map: Orihon, options?: PerformanceInspectorOptions);
    snapshot(): PerformanceSnapshot;
    measureFrames(sampleFrames?: number): Promise<PerformanceSnapshot>;
    start(intervalMs?: number): this;
    stop(): this;
}
export declare function performanceInspector(map: Orihon, options?: PerformanceInspectorOptions): PerformanceInspector;
//# sourceMappingURL=performance.d.ts.map