What problem are you facing?

With last version including "Type inference for nested documents", findOne (and many other functions) does not accept an interface as a filter if it contains an array.

What driver and relevant dependency versions are you using?

mongodb@4.3.0

Steps to reproduce?

export interface S

const obj =

;
(await ((await getClient()).db('db').collection<S>('col').updateOne(obj as unknown as S, { $set:

})));
=> TypeScript error Argument of type 'S' is not assignable to parameter of type 'Filter<S>'.
Type 'S' is not assignable to type '{ [x: `a.${number}`]: Condition<string> | undefined; _id?: Condition<ObjectId>; }'.
Index signature for type '`a.${number}`' is missing in type 'S'.ts(2345)

(await ((await getClient()).db('db').collection<S>('col').updateOne(obj, { $set:

})));
=> No TypeScript error, here obj is an object, not an interface