explicit return/callback type for update based on options

[RobMayer]

No description provided.

[arantes555]

Hello @RobMayer . Thank you for the PR, and sorry for the delay in reviewing it !

Could you please explain concretely what is the interest of this ? I have trouble coming up with an actual case where this would change anything, but I am sure I am missing something.

[RobMayer]

Hello @RobMayer . Thank you for the PR, and sorry for the delay in reviewing it !

Could you please explain concretely what is the interest of this ? I have trouble coming up with an actual case where this would change anything, but I am sure I am missing something.

It looks like this got merged, but to still answer the question:
the payload type of "db" will be something called "Payload" for the sake of argument.

// before
const resultSingle = await db.updateAsync({...}, { multi: false });
resultSingle.affectedDocument // the type of this is "null | Payload | Payload[]

const resultMulti = await db.updateAsync({...}, { multi: true });
resultMulti.affectedDocument // the type of this is "null | Payload | Payload[]

// after
const resultSingle = await db.updateAsync({...}, { multi: false });
resultSingle.affectedDocument // the type of this is "null | Payload"

const resultMulti = await db.updateAsync({...}, { multi: true });
resultMulti.affectedDocument // the type of this is "Payload[]"

basically: it's more explicit on the type of affectedDocument based on wether you set multi to true or not without having to narrow the type each and every time.