Custom Decorator Typescript Mongoose

Question

I'm trying to create a custom class decorator, that creates an instance of a repository class, the snippet below represents the "decorator" and the "repository".

import UserModel, { User } from "../models/user.model";
import AbstractRepository from "./abstract.repository";
import { Document, Model } from 'mongoose'
import { injectable } from "inversify";

export function Repository(service: Document): ClassDecorator {
    return function (target: Function) {

    }
}

@Repository(User)
export class TestRepository {

}

and this other snippet represents my mongoose models

import moongose, { Document, Schema } from 'mongoose'

export interface User extends Document {
    name: String,
}

const UserSchema = new Schema<User>({
    name: {
        type: String
    },
})

export default moongose.model<User>("user", UserSchema)

But when I try to use my custom decorator, typescript complains about something and gives this error.

'User' only refers to a type, but is being used as a value here.ts(2693)

Someone already had this issue, and can help me?

Answer 1

The argument of the decorator function Repository(service: Document) {} is an instance of document but you passed a type User .

@Repository(User) should be @Repository(new UserModel) .

Or change the type of the argument

function Repository(service: Model<User>) {} then you can call the decorator like this @Repository(UserModel)