start telegraf scene only by command using telegraf.js - node.js

Question

I'm trying to start some scene only by exact command /start
I'm using Telegraf.js library
that's not going well when I do middleware it starts automatically when I send some other input and not just /start
how can I solve it? thanks.
bot.use(session())
const userWizard = new WizardScene('user-wizard',
(ctx) => {
ctx.reply("What is your name?");
//Necessary for store the input
ctx.scene.session.user = {};
//Store the telegram user id
ctx.scene.session.user.userId = ctx.from.id;
return ctx.wizard.next();
},
(ctx) => {
//Validate the name
if (ctx.message.text.length < 1 || ctx.message.text.length > 12) {
return ctx.reply("Name entered has an invalid length!");
}
//Store the entered name
ctx.scene.session.user.name = ctx.message.text;
ctx.reply("What is your last name?");
return ctx.wizard.next();
},
async (ctx) => {
//Validate last name
if (ctx.message.text.length > 30) {
return ctx.reply("Last name has an invalid length");
}
ctx.scene.session.user.lastName = ctx.message.text;
//Store the user in a separate controller
// userController.StoreUser(ctx.scene.session.user);
return ctx.scene.leave(); //<- Leaving a scene will clear the session automatically
}
);
const stage = new Stage([userWizard], { default: 'user-wizard' })
bot.use(stage)
bot.command('/start', ctx => {
stage.start(ctx)
}
)
bot.launch()

Answer 1

Try to replace this part in your code:
const stage = new Stage([userWizard], { default: 'user-wizard' })
bot.use(stage)
bot.command('/start',ctx => {
stage.start(ctx)
}
)
With this:
const stage = new Stage([userWizard]);
bot.use(session());
bot.use(stage.middleware());
bot.command('/start',(ctx) => ctx.scene.enter('user-wizard'));
bot.launch();