import type { ScaleOpts } from './util.ts';
import type { AnyConfigurationModel } from '@jbrowse/core/configuration';
import type { Feature, Region } from '@jbrowse/core/util';
import type { LastStopTokenCheck, StopToken } from '@jbrowse/core/util/stopToken';
export declare function drawDensity(ctx: CanvasRenderingContext2D, props: {
    features: Map<string, Feature> | Feature[];
    regions: Region[];
    bpPerPx: number;
    scaleOpts: ScaleOpts;
    height: number;
    ticks: {
        values: number[];
    };
    displayCrossHatches: boolean;
    config: AnyConfigurationModel;
    stopToken?: StopToken;
    lastCheck?: LastStopTokenCheck;
}): {
    reducedFeatures: Feature[];
};