class Driver {
    private command: Command;
    constructor(command: Command) {
        this.command = command;
    }

    execute() {
        this.command.execute();
    }
};

class Engine {
    private state: boolean;
    constructor() {
        this.state = false;
    }

    on() {
        this.state = true;
    }

    off() {
        this.state = false;
    }
};

interface Command {
    execute: () => void;
}

class OnStartCommand implements Command {
    private engine: Engine;
    constructor(engine: Engine) {
        this.engine = engine;
    }

    execute() {
        this.engine.on();
    }
};

class onSwitchOffCommand implements Command {
    private engine: Engine;
    constructor(engine: Engine) {
        this.engine = engine;
    }

    execute() {
        this.engine.off();
    }
};

const engine = new Engine();
console.log(engine)

const onStartCommand = new OnStartCommand(engine);
const driver = new Driver(onStartCommand)
driver.execute()

console.log(engine)