Type Safety not in place for operators in find() query

[debiprasadmishra50]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Mongoose version

8.23.0

Node.js version

24.12.0

MongoDB server version

8.0.19

Typescript version (if applicable)

5.4.5

Description

export type Condition<T> = T | QuerySelector<T | any> | any;
in query.d.ts literally acccepts any due to which the intellisense fails and it accepts nonsense queries like this

const data = await this.movieModel.find(
      { $and: [{ runtime: { $wrong: 100 } }] }, // ❌ there is no $wrong operator
      { "awards.nominations": 1 }
    );

And also, there is no autocompletion suggestions as well.

Steps to Reproduce

I used NestJS to produce this

1. Create a Schema
2. Inject Model like this
   @InjectModel(Movie.name) private readonly movieModel: Model<Movie>,
3. Write a query like this

const data = await this.movieModel.find(
      { $and: [{ runtime: { $wrong: 100 } }] }, // ❌ there is no $wrong operator
      { "awards.nominations": 1 }
    );

Expected Behavior

No response

[vkarpov15]

Mongoose 9 has stricter type checking for query selectors than Mongoose 8, which is intentionally permissive. We put in a new PR #16084 to make this type check stricter in Mongoose 9.

[debiprasadmishra50]

@vkarpov15

Mongoose version (UPDATED)
"mongoose": "^9.3.0",

Node.js version
24.12.0

MongoDB server version
8.0.19

Typescript version (if applicable)
5.4.5

Using QueryFilter here, for the find conditions
import { Model, QueryFilter } from "mongoose";

const data = await this.movieModel.find(
      { $and: [{ runtime: { $wrong: 100 } }] }, // ❌ there is no $wrong operator
      { "awards.nominations": 1 }
    );

This code still doesn't show any error at compile time

[vkarpov15]

My apologies, this issue was mistakenly put in the 9.3 milestone but #16084 is in the 9.4 milestone