What is the best way to enhance a mongoose query using typescript?

I have been attempting to convert this code into TypeScript: https://github.com/kephin/Node_Redis-Caching/blob/master/services/cache.js , but I am struggling to extend the Query object successfully.

Currently, I am trying to extend it through declaration merging in a similar manner as I do with express, but unfortunately, it is not functioning as expected.

declare namespace Mongoose {
  interface Query {
    cache: any;
  }

Answer №1

I successfully implemented the solution in the following way:

# mongoose.d.ts

type CacheOptions = { key?: string }

declare module 'mongoose' {
  interface DocumentQuery<T, DocType> {
    cache(options?: CacheOptions): Query<T>
    useCache: boolean
    hashKey: string
  }
}

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