/**
 * A dataset in the tool cache.
 * The type of the content is determined by the tool that added the dataset.
 */
export type ToolCacheDataset = {
    type: 'geojson';
    content: GeoJSON.FeatureCollection;
} | {
    type: 'columnData';
    content: Record<string, unknown>[];
} | {
    type: 'string';
    content: string;
} | {
    type: 'rowObjects';
    content: unknown[][];
} | {
    type: 'json';
    content: Record<string, unknown>;
} | {
    type: 'weights';
    content: {
        weights: number[][];
        weightsMeta: Record<string, unknown>;
    };
} | {
    type: 'arrow';
    content: unknown;
};
/**
 * A singleton class to cache the results of tools.
 *
 */
export declare class ToolCache {
    private static instance;
    private cachedResults;
    private constructor();
    static getInstance(): ToolCache;
    get toolCache(): Record<string, unknown>;
    addDataset(toolCallId: string, additionalData: unknown): void;
    clearCache(): void;
    removeDataset(datasetName: string): void;
    hasDataset(datasetName: string): boolean;
    getDataset(datasetName: string): ToolCacheDataset | null;
}