/// <reference types="wicg-file-system-access" />
export interface AdapterModule<TOptions> {
    default: Adapter<TOptions>;
}
export interface Adapter<TOptions> {
    (opts: TOptions): FileSystemFolderHandleAdapter | Promise<FileSystemFolderHandleAdapter>;
}
export interface FileSystemHandleAdapter {
    readonly kind: 'file' | 'directory';
    readonly name: string;
    writable: boolean;
    isSameEntry(other: this): Promise<boolean>;
    queryPermission?(descriptor?: FileSystemHandlePermissionDescriptor): Promise<PermissionState>;
    requestPermission?(descriptor?: FileSystemHandlePermissionDescriptor): Promise<PermissionState>;
}
export interface FileSystemFileHandleAdapter<W = WriteChunk> extends FileSystemHandleAdapter {
    readonly kind: 'file';
    createWritable(options: FileSystemCreateWritableOptions): Promise<UnderlyingSink<W>>;
    getFile(): Promise<File>;
}
export interface FileSystemFolderHandleAdapter extends FileSystemHandleAdapter {
    readonly kind: 'directory';
    entries(): AsyncGenerator<[string, FileSystemFileHandleAdapter | FileSystemFolderHandleAdapter], void, undefined>;
    getFileHandle(name: string, options?: FileSystemGetFileOptions): Promise<FileSystemFileHandleAdapter>;
    getDirectoryHandle(name: string, opts?: FileSystemGetDirectoryOptions): Promise<FileSystemFolderHandleAdapter>;
    removeEntry(name: string, options?: FileSystemRemoveOptions): Promise<void>;
}
export declare type WriteChunk = BufferSource | Blob | string | WriteChunkObject;
export declare type WriteChunkObject = WriteChunkSeekObject | WriteChunkWriteObject | WriteChunkTruncateObject;
export interface WriteChunkSeekObject {
    type: 'seek';
    position: number;
}
export interface WriteChunkWriteObject {
    type: 'write';
    position?: number;
    data: BufferSource | Blob | string;
}
export interface WriteChunkTruncateObject {
    type: 'truncate';
    size: number;
}