export declare const LEVEL_STREAM: {
    readonly DEFAULT_CACHE_TIME: number;
    readonly DEFAULT_GRANULARITY: 10;
    readonly DEFAULT_RANGE: readonly [-20, 100];
};
export declare const DEFAULT_LEVEL_STREAM_CONFIG: {
    cacheTime: number;
    granularity: 10;
    range: readonly [-20, 100];
    onLevelStreamUpdate: (data: Map<number, number>) => void;
};
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