How to type `QueryWithHelpers` so that it returns both `HydratedDocument` and `FlattenMaps`?

[nikzanda]

Prerequisites

• I have written a descriptive issue title

Mongoose version

8.12.1

Node.js version

20.10.0

MongoDB version

6.0.2

Operating system

macOS

Operating system version (i.e. 20.04, 11.3, 10)

No response

Issue

In the example provided in the documentation, the query helper byName returns a HydratedDocument of Project. However, if the query is lean, it should consequently return the FlattenMaps type. How can the typing be corrected?"

Reproduction link here.

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[nikzanda]

Still active