TS2693：“T”仅指类型，但在此处用作值

Question

so as not to repeat the code, I would like to create an abstract class once, which will connect to the appropriate repository depending on the initialization of the class with the appropriate type T. However, I have a problem that I don't know how to call the value T and not the type as a parameter of the getRepository method from typeorm package.

import {getDataSource} from "../utils/data-source";
import {Category} from "../model/category";
import {EntityTarget, ObjectLiteral} from "typeorm";

export abstract class Controller<T> {
    protected repository;

    public init = async () => {
        this.repository = (await getDataSource()).getRepository(T);
    };
}

getRepository(T); this method has the problem mentioned in the title

Answer 1

This is the easiest way to do it, if there isn't a better one

import {getDataSource} from "../utils/data-source";

export abstract class Controller {
    protected repository;

    public init = async (type) => {
        this.repository = (await getDataSource()).getRepository(type);
    };
}