declare module 'vscode' {
  /**
   * Represents a reference to a command. Provides a title which
   * will be used to represent a command in the UI and, optionally,
   * an array of arguments which will be passed to the command handler
   * function when invoked.
   */
  export interface Command {
    /**
     * Title of the command, like `save`.
     */
    title: string;

    /**
     * The identifier of the actual command handler.
     * @see [commands.registerCommand](#commands.registerCommand).
     */
    command: string;

    /**
     * A tooltip for the command, when represented in the UI.
     */
    tooltip?: string;

    /**
     * Arguments that the command handler should be
     * invoked with.
     */
    arguments?: any[];
  }
  export namespace commands {
    /**
     * Registers a command that can be invoked via a keyboard shortcut,
     * a menu item, an action, or directly.
     *
     * Registering a command with an existing command identifier twice
     * will cause an error.
     *
     * @param command A unique identifier for the command.
     * @param callback A command handler function.
     * @param thisArg The `this` context used when invoking the handler function.
     * @return Disposable which unregisters this command on disposal.
     */
    export function registerCommand(command: string, callback: (...args: any[]) => any, thisArg?: any): Disposable;

    /**
     * Executes the command denoted by the given command identifier.
     *
     * * *Note 1:* When executing an editor command not all types are allowed to
     * be passed as arguments. Allowed are the primitive types `string`, `boolean`,
     * `number`, `undefined`, and `null`, as well as [`Position`](#Position), [`Range`](#Range), [`Uri`](#Uri) and [`Location`](#Location).
     * * *Note 2:* There are no restrictions when executing commands that have been contributed
     * by extensions.
     *
     * @param command Identifier of the command to execute.
     * @param rest Parameters passed to the command function.
     * @return A thenable that resolves to the returned value of the given command. `undefined` when
     * the command handler function doesn't return anything.
     */
    export function executeCommand<T>(command: string, ...rest: any[]): Thenable<T | undefined>;

    /**
     * Retrieve the list of all available commands. Commands starting an underscore are
     * treated as internal commands.
     *
     * @param filterInternal Set `true` to not see internal commands (starting with an underscore)
     * @return Thenable that resolves to a list of command ids.
     */
    export function getCommands(filterInternal?: boolean): Thenable<string[]>;
      /**
     * Registers a text editor command that can be invoked via a keyboard shortcut,
     * a menu item, an action, or directly.
     *
     * Text editor commands are different from ordinary [commands](#commands.registerCommand) as
     * they only execute when there is an active editor when the command is called. Also, the
     * command handler of an editor command has access to the active editor and to an
     * [edit](#TextEditorEdit)-builder.
     *
     * @param command A unique identifier for the command.
     * @param callback A command handler function with access to an [editor](#TextEditor) and an [edit](#TextEditorEdit).
     * @param thisArg The `this` context used when invoking the handler function.
     * @return Disposable which unregisters this command on disposal.
     */
    export function registerTextEditorCommand(command: string, callback: (textEditor: TextEditor, edit: TextEditorEdit, ...args: any[]) => void, thisArg?: any): Disposable;
  }
}