import { Aliases } from './aliases';
import type { IWorkerIO } from './buffered_io';
import type { ISize } from './callback';
import type { IShellImpl } from './defs_internal';
import { Environment } from './environment';
import { History } from './history';
/**
 * Shell implementation.
 */
export declare class ShellImpl implements IShellImpl {
    constructor(options: IShellImpl.IOptions);
    get aliases(): Aliases;
    get environment(): Environment;
    get exitCode(): number;
    externalInput(maxChars: number | null): Promise<string>;
    externalOutput(text: string, isStderr: boolean): void;
    get history(): History;
    initialize(): Promise<void>;
    input(chars: string): Promise<void>;
    output(text: string): void;
    setSize(size: ISize): void;
    setWorkerIO(workerIO: IWorkerIO): void;
    get size(): ISize;
    start(): Promise<void>;
    terminate(): void;
    themeChange(isDark?: boolean): Promise<void>;
    /**
     * Handle input where the first character is an escape (ascii 27).
     * @param chars Input string.
     * @param index Index of the ESCAPE character in input string.
     * @returns Number of characters consumed.
     */
    private _escapedInput;
    private _filenameExpansion;
    private _handleThemeChange;
    private _initFileSystem;
    private _initWasmPackages;
    private _outputPrompt;
    private _runCommands;
    private _runCommand;
    private _setDarkMode;
    private _setExitCode;
    private _wasmUrlQueryParams;
    private _commandLine;
    private _darkMode?;
    private _exitCode;
    private _requestedDarkMode?;
    private _isRunning;
    private _size;
    private _themeStatus;
    private _commandModuleLoader;
    private _runContext;
    private _dummyInput;
    private _dummyOutput;
    private _fileSystem;
    private _options;
    private _stderr;
    private _tabCompleter;
}