mtcute/docs/guide/advanced/treeshaking.md

Tree-shaking

Being a ESM-first library, mtcute supports tree-shaking out of the box.

This means that you can import only the parts of the library that you need, and the bundler will remove all the unused code.

Usage

To start using tree-shaking, there are a few things to keep in mind:

• Do not use TelegramClient. Use BaseTelegramClient instead, and import the needed methods.

  For example, instead of this:

  import { TelegramClient } from '@mtcute/web'
  
  const tg = new TelegramClient({ ... })
  
  await tg.sendText(...)
  

  you should use this:

  import { BaseTelegramClient } from '@mtcute/web'
  import { sendText } from '@mtcute/web/methods.js'
  
  const tg = new BaseTelegramClient({ ... })
  
  await sendText(tg, ...)
  

• TL serialization is currently not tree-shakeable, because it is done via a global map of constructors. There's no ETA on when (or whether at all) this will be changed, so there will be ~300 KB of non-shakeable code.