import { useOptimizeModel } from '../use-optimize-model';
import { ModelFileTypes, InputFileOrDirectory, ModelFile } from './types';
/**
 * Custom hook to load and manage 3D models, integrating optimization functionalities.
 *
 * @param optimizer - Optional optimizer hook returned from useOptimizeModel.
 * @returns An object containing the state, event handlers, and optimization functions.
 */
declare function useLoadModel(optimizer?: ReturnType<typeof useOptimizeModel>): {
    /**
     * Add an event listener to the event system.
     */
    on: <T extends import('./types').EventTypes>(event: T, handler?: import('./types').EventHandler<T>) => void;
    /**
     * Remove an event listener from the event system.
     */
    off: <T extends import('./types').EventTypes>(event: T, handler?: import('./types').EventHandler<T>) => void;
    /**
     * Load a model and integrate it with the optimizer if available.
     * This also makes the model available in the use-model-context hook.
     */
    load: (filesOrDirectories: InputFileOrDirectory) => Promise<void>;
    /**
     * Reset the model and optimizer state to the initial state.
     */
    reset: () => void;
    /**
     * Integration of the optimizer
     * An object containing functions to interact with the optimizer.
     *
     * It exposes the following functions:
     *
     * - `simplifyOptimization(options?: SimplifyOptions)`: Runs the simplification optimization with the given options.
     * - `dedupOptimization(options?: DedupOptions)`: Runs the deduplication optimization with the given options.
     * - `quantizeOptimization(options?: QuantizeOptions)`: Runs the quantization optimization with the given options.
     * - `texturesCompressionOptimization(options?: TextureCompressionOptions)`: Runs the texture compression optimization with the given options.
     * - `getSize()`: Returns the size of the optimized model.
     * - `reset()`: Resets the optimizer.
     * - `report`: The report state of the optimizer.
     * - `error`: The error state of the optimizer.
     * - `loading`: The loading state of the optimizer.
     */
    optimize: {
        simplifyOptimization: () => void;
        dedupOptimization: () => void;
        quantizeOptimization: () => void;
        normalsOptimization: () => void;
        texturesCompressOptimization: () => void;
        getSize: () => void;
        reset: () => void;
        report: null;
        error: null;
        loading: boolean;
    } | {
        simplifyOptimization: (options?: {
            ratio?: number;
            error?: number;
        } | undefined) => Promise<void>;
        dedupOptimization: (options?: import('@gltf-transform/functions').DedupOptions | undefined) => Promise<void>;
        quantizeOptimization: (options?: import('@gltf-transform/functions').QuantizeOptions | undefined) => Promise<void>;
        normalsOptimization: (options?: import('@gltf-transform/functions').NormalsOptions | undefined) => Promise<void>;
        texturesCompressOptimization: (options?: import('@gltf-transform/functions').TextureCompressOptions | undefined) => Promise<void>;
        getSize: () => import('../use-optimize-model/types').ModelSize | null;
        reset: () => void;
        report: import('@gltf-transform/functions').InspectReport | null;
        error: Error | null;
        loading: boolean;
    };
    file: ModelFile | null;
    isFileLoading: boolean;
    progress: number;
    supportedFileTypes: ModelFileTypes[];
};
export default useLoadModel;