import type { ISize } from './callback';
import type { IShellWorker } from './defs_internal';
import type { IDriveFSOptions } from './drive_fs';
import { Termios } from './termios';
/**
 * Abstract base class for web worker running ShellImpl.
 * Implementation-specific code (comlink) is here to avoid polluting ShellImpl with it.
 */
export declare abstract class BaseShellWorker implements IShellWorker {
    initialize(options: IShellWorker.IOptions, callExternalCommand: IShellWorker.IProxyCallExternalCommand, callExternalTabComplete: IShellWorker.IProxyCallExternalTabComplete, downloadModuleCallback: IShellWorker.IProxyDownloadModuleCallback, enableBufferedStdinCallback: IShellWorker.IProxyEnableBufferedStdinCallback, outputCallback: IShellWorker.IProxyOutputCallback, setMainIOCallback: IShellWorker.IProxySetMainIOCallback, terminateCallback: IShellWorker.IProxyTerminateCallback, wasmUrlQueryParamsCallback?: IShellWorker.IProxyQueryParamsCallback): Promise<void>;
    enableBufferedStdin(enable: boolean): Promise<void>;
    get exitCode(): number;
    externalInput(maxChars: number | null): Promise<string>;
    externalOutput(text: string, isStderr: boolean): void;
    externalSetTermios(flags: Termios.IFlags): void;
    /**
     * Initialize the DriveFS to mount an external file system.
     */
    protected abstract initDriveFS(options: IDriveFSOptions): void;
    input(char: string): Promise<void>;
    setSize(size: ISize): void;
    start(): Promise<void>;
    themeChange(isDark?: boolean): Promise<void>;
    private _setWorkerIO;
    private _shellImpl?;
    private _downloadModuleCallback?;
    private _enableBufferedStdinCallback?;
    private _terminateCallback?;
    private _stdinContext?;
    private _serviceWorkerWorkerIO?;
    private _sharedArrayBufferWorkerIO?;
    private _termios;
    private _workerIO?;
}