export declare const isMergeFieldOptions: <Data>(options: CacheUpdateOptions<Data>) => options is MergeFieldOptions<Data>;
export declare const isMergeOptions: <Data>(options: CacheUpdateOptions<Data>) => options is MergeOptions;
export declare type MergeOptions = {
    /**
     * Granular merges instead of overwriting the target documents in their entirety.
     */
    merge: boolean;
    /**
     * Allow dot-notation mask fields styles to be updated. Intended to use
     * when updating documents with `updateDoc`.
     */
    allowDotNotation?: boolean;
};
declare type AllowString<T> = T extends string ? T : never;
export declare type MergeFieldOptions<Data extends Record<string, any>> = {
    /**
     * Only replace the specified field paths.
     * Any field path that is not specified is ignored and remains untouched.
     * If your input sets any field to an empty map, all nested fields are overwritten.
     */
    mergeFields: Array<AllowString<keyof Data>>;
};
export declare type CacheUpdateOptions<Data extends Record<string, any>> = Partial<MergeOptions> | Partial<MergeFieldOptions<Data>>;
export {};