Sample for creating a Telegraf js bot scence with timeout

TimeoutTelegrafjsBot.ts

import * as util from 'util'
const setTimeoutPromise = util.promisify(setTimeout);
const TIMEOUT_MILLI_SECONDS = 10000;

export interface MyContext extends SceneContextMessageUpdate {
    session: any,
}

const localSession = new LocalSession({
    database: 'example_db.json',
    property: 'session'
});

const textScence = new Scene("textScene");
textScence.enter((ctx: MyContext) => {
    const timeout = setTimeoutPromise<MyContext>(TIMEOUT_MILLI_SECONDS, ctx);

    ctx.reply("Please send some text");

    const textPromise = new Promise<MyContext>((resolve, reject) => {
        textScence.on("text", (ctx: MyContext) => {
            ctx.session.text =  ctx.message.text;
            resolve(ctx)
        });
    })

    Promise.race([textPromise, timeout]).then(data => {
        if (data.session.text) {
            // swtich to next scene
            this.switchScene(data);
        }
        else {
            data.reply("Timeout! No addtional text received. Exiting);
                    const key = localSession.getSessionKey(ctx)
            localSession.saveSession(key, null);
        }
    }).catch(e => {
        console.log("Got error in text scene", e);
        const key = localSession.getSessionKey(ctx)
        localSession.saveSession(key, null);
    })
});

this.bot.on('photo', async (ctx) => {
    console.log("START->Photo");

    //get photo ...
    ctx.scence.enter("textScene")
})

const stage = new Stage(["textScene"])
stage.command('cancel', leave());

this.bot.use(stage.middleware())
this.bot.start((ctx) => ctx.reply('Welcome!'))