[TypeScript] How to get command from context?

[hashfi-motion]

As the title said, how do I get command from context? I tried deunionize the context but TypeScript still can't find it

[MKRhere]

ctx.command is only available in bot.command and bot.start. It doesn't exist in Context by itself.

[hashfi-motion]

Hmm, how do I access it then? My code is something like below:

	bot.command(/.*/, _before);
	bot.action(/.*/, _before);
	
	//...
	_before = async (cx: ContextSession) => {
		//...
	};

ContextSession basically just Context with some session I add

[MKRhere]

interface ContextSession <U extends Update = Update> extends Context<U> {
	session: MySessionType;
}

_before = async (ctx: ContextSession<Update.MessageUpdate<Message.TextMessage>> & { command: string }) {
	// ...
}

Note: The & part is internally CommandContextExtn and is not exported. In the upcoming 4.16.0 release, I'm exposing it as Convenience.CommandContextExtn. The following will be made possible:

 import type { Convenience } from "telegraf/types";
 
 // ContextSession<Update.MessageUpdate<Message.TextMessage>> & CommandContextExtn

[MKRhere]

Also realise bot.action(/.*/, _before) will NOT have ctx.command. It's probably better you extract the common logic out of _before, then call it like so:

bot.command(/.*/, ctx => {
  return commonHandler(ctx.command, ...);
});

bot.action(/.*/, ctx => {
	return commonHandler(ctx.match, ...);
});

[hashfi-motion]

Thanks! I guess I'm gonna go with the second approach, the first approach just look ugly and long 😅