export {};
export interface FileSystemHandle {
    readonly kind: 'file' | 'directory';
    readonly name: string;
    isSameEntry(other: FileSystemHandle): Promise<boolean>;
    queryPermission(descriptor?: FileSystemHandlePermissionDescriptor): Promise<PermissionState>;
    requestPermission(descriptor?: FileSystemHandlePermissionDescriptor): Promise<PermissionState>;
}
export declare type FileSystemHandleUnion = FileSystemFileHandle | FileSystemDirectoryHandle;
export interface FilePickerAcceptType {
    description?: string | undefined;
    accept: Record<string, string | string[]>;
}
export interface FilePickerOptions {
    types?: FilePickerAcceptType[] | undefined;
    excludeAcceptAllOption?: boolean | undefined;
}
export interface OpenFilePickerOptions extends FilePickerOptions {
    multiple?: boolean | undefined;
}
export interface SaveFilePickerOptions extends FilePickerOptions {
    suggestedName?: string;
}
export interface DirectoryPickerOptions {
}
export declare type FileSystemPermissionMode = 'read' | 'readwrite';
export interface FileSystemPermissionDescriptor extends PermissionDescriptor {
    handle: FileSystemHandle;
    mode?: FileSystemPermissionMode | undefined;
}
export interface FileSystemHandlePermissionDescriptor {
    mode?: FileSystemPermissionMode | undefined;
}
export interface FileSystemCreateWritableOptions {
    keepExistingData?: boolean | undefined;
}
export interface FileSystemGetFileOptions {
    create?: boolean | undefined;
}
export interface FileSystemGetDirectoryOptions {
    create?: boolean | undefined;
}
export interface FileSystemRemoveOptions {
    recursive?: boolean | undefined;
}
export declare type WriteParams = {
    type: 'write';
    position?: number | undefined;
    data: BufferSource | Blob | string;
} | {
    type: 'seek';
    position: number;
} | {
    type: 'truncate';
    size: number;
};
export declare type FileSystemWriteChunkType = BufferSource | Blob | string | WriteParams;
export interface WritableStream {
    close(): Promise<void>;
}
export interface FileSystemWritableFileStream extends WritableStream {
    write(data: FileSystemWriteChunkType): Promise<void>;
    seek(position: number): Promise<void>;
    truncate(size: number): Promise<void>;
}
export interface FileSystemFileHandle extends FileSystemHandle {
    readonly kind: 'file';
    getFile(): Promise<File>;
    createWritable(options?: FileSystemCreateWritableOptions): Promise<FileSystemWritableFileStream>;
}
export interface FileSystemDirectoryHandle extends FileSystemHandle {
    readonly kind: 'directory';
    getDirectoryHandle(name: string, options?: FileSystemGetDirectoryOptions): Promise<FileSystemDirectoryHandle>;
    getFileHandle(name: string, options?: FileSystemGetFileOptions): Promise<FileSystemFileHandle>;
    removeEntry(name: string, options?: FileSystemRemoveOptions): Promise<void>;
    resolve(possibleDescendant: FileSystemHandle): Promise<string[] | null>;
    keys(): AsyncIterableIterator<string>;
    values(): AsyncIterableIterator<FileSystemDirectoryHandle | FileSystemFileHandle>;
    entries(): AsyncIterableIterator<[string, FileSystemDirectoryHandle | FileSystemFileHandle]>;
    [Symbol.asyncIterator]: FileSystemDirectoryHandle['entries'];
}
export interface DataTransferItem {
    getAsFileSystemHandle(): Promise<FileSystemHandle | null>;
}
export interface StorageManager {
    getDirectory(): Promise<FileSystemDirectoryHandle>;
}
export declare function showOpenFilePicker(options?: OpenFilePickerOptions & {
    multiple?: false | undefined;
}): Promise<[FileSystemFileHandle]>;
export declare function showOpenFilePicker(options?: OpenFilePickerOptions): Promise<FileSystemFileHandle[]>;
export declare function showSaveFilePicker(options?: SaveFilePickerOptions): Promise<FileSystemFileHandle>;
export declare function showDirectoryPicker(options?: DirectoryPickerOptions): Promise<FileSystemDirectoryHandle>;
export interface ChooseFileSystemEntriesOptionsAccepts {
    description?: string | undefined;
    mimeTypes?: string[] | undefined;
    extensions?: string[] | undefined;
}
export interface ChooseFileSystemEntriesFileOptions {
    accepts?: ChooseFileSystemEntriesOptionsAccepts[] | undefined;
    excludeAcceptAllOption?: boolean | undefined;
}
export interface GetSystemDirectoryOptions {
    type: 'sandbox';
}
export interface FileSystemHandlePermissionDescriptor {
    /**
     * @deprecated Old property just for Chromium <=85. Use `mode: ...` in the new API.
     */
    writable?: boolean | undefined;
}