import { Storage } from '@google-cloud/storage';
import { ComKey, Coordinate, UpdateOptions as CoreUpdateOptions, Item, PriKey } from '@fjell/types';
import { PathBuilder } from '../PathBuilder';
import { FileProcessor } from '../FileProcessor';
import { Options } from '../Options';
interface InternalUpdateOptions {
    mergeStrategy?: 'deep' | 'shallow' | 'replace';
}
/**
 * Update an existing item in GCS
 */
export declare function update<V extends Item<S, L1, L2, L3, L4, L5>, S extends string, L1 extends string = never, L2 extends string = never, L3 extends string = never, L4 extends string = never, L5 extends string = never>(storage: Storage, bucketName: string, key: PriKey<S> | ComKey<S, L1, L2, L3, L4, L5>, item: Partial<Item<S, L1, L2, L3, L4, L5>>, updateOptions: CoreUpdateOptions | InternalUpdateOptions | undefined, pathBuilder: PathBuilder, fileProcessor: FileProcessor, coordinate: Coordinate<S, L1, L2, L3, L4, L5>, options: Options<V, S, L1, L2, L3, L4, L5>): Promise<V>;
export {};