Context

Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.

• Telegraf.js Version: 3.34.1
• Node.js Version: 12.11.1
• Operating System: Ubuntu Linux 19.10

Expected Behavior

ContextMessageUpdate type definition is missing 'session' attribute definition

Current Behavior

When trying to access ctx.session in TypeScript code generates an error

Fix

Add:

session: any

in the ContextMessageUpdate definition (use 'any' because the session can be augmented by user scripts)