Question 1

How to set up Telegraf with Express.js webhooks?

Accepted Answer

Use bot.launch with webhook options or attach bot.createWebhook to an Express server. The README includes example integrations for express.js and other frameworks like fastify.

Question 2

Telegraf vs node-telegram-bot-api: which is better?

Accepted Answer

Telegraf offers better TypeScript support and a middleware system, making it more extensible. node-telegram-bot-api is simpler for basic bots but lacks advanced features.

Question 3

How to handle file uploads in Telegraf?

Accepted Answer

Telegraf supports multiple file sources like file_id, local paths, URLs, buffers, and streams. Use methods like ctx.replyWithVideo with Input helpers, as detailed in the working with files section.

Question 4

Can Telegraf be used for large-scale bots?

Accepted Answer

Yes, but it requires proper error handling and deployment. Use webhooks for efficiency, and implement rate limiting or middleware optimizations to manage high traffic.

Question 5

How to implement custom middleware in Telegraf?

Accepted Answer

Use bot.use with async functions that take ctx and next. Await next() to pass control, and mutate ctx before or after. The middleware section explains this with examples.

Question 6

What are common pitfalls when using Telegraf?

Accepted Answer

Common issues include unhandled errors crashing the bot, misconfigured webhooks leading to update losses, and middleware ordering problems. Refer to the error handling and production guides.

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