import { FileSystemHandlePermissionDescriptor } from '../types';
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 Sink {
    write(chunk: FileSystemWriteChunkType): void;
    close(): void;
}
export interface FileHandleOpts {
    keepExistingData?: boolean;
    size?: number;
}
export interface RemoveOpts {
    recursive: boolean;
}
export declare type RequestPermissionResult = 'granted' | 'denied';
export interface FileHandle {
    kind: 'file' | 'directory';
    name: string;
    writable: boolean;
    readable: boolean;
    getFile(): Promise<File>;
    remove(opts: RemoveOpts): Promise<void>;
    createWritable(opts: FileHandleOpts): Promise<Sink>;
    isSameEntry(other: FileHandle): Promise<boolean>;
    queryPermission?(opts: FileSystemHandlePermissionDescriptor): PermissionState;
    requestPermission?(opts: FileSystemHandlePermissionDescriptor): PermissionState;
}