Wrong type to $in expr

Prerequisites

• I have written a descriptive issue title

Mongoose version

6.4.0

Node.js version

16.14.2

MongoDB version

cosmosDB 4 - not really relevant

Operating system

Windows

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

WSL 2 - Ubuntu 20.04

Issue

I have received this issue

Type 'string[]' is not assignable to type '[Expression, ArrayExpression<any>]'. Target requires 2 element(s) but source may have fewer.

for this snippet:

{
    $match: {
        'data.sourceCurrency': { $in: ['USD', 'GBP', 'EUR'] },
    },
}

I’m not sure what more data to provide, but unless I’ve mistaken it looks like the $in an array is an array of 2 items which [Expression, ArrayExpression<any>] instead of Expression[] | ArrayExpression<any>[]

P.S: ArrayExpression covers T[] which includes string[] which is my type

[heilmela]

im facing similiar problems with some aggregate pipelines

const pipeline: PipelineStage[] = [
      {
        $unwind: {
          path: '$sectors',
          preserveNullAndEmptyArrays: true,
        },
      },
      {
        $match: {
          organization,
          approved: { $exists: true, $ne: null },
        },
      }
  ]

Where i get Type 'null' is not assignable to type 'Expression | [Expression, Expression]'. Removing the $ne leaves me with Type '{ $exists: true; }' is not assignable to type 'Expression'.

[Uzlopak]

This is some inconsistency between the docs of mongo and real mongodb syntax. I will provide a fix tomorrow. I am currently not having access to my Laptop.