product · inferred from evidence
Recipient
A type in the @trycourier/courier library that was missing the 'slack' property.
- TS2353: 'slack' does not exist in type 'MessageRecipient' (@trycourier/courier)
The `Recipient` type was missing the `slack` property (it existed in `UserProfile` but was not carried over to `MessageRecipient`), so the documented send shape failed type checks. The maintainer confirmed the miss and shipped the corrected