How to use connection as standalone object with types? - node.js

Question

Not working code just to illustrate what I'm trying to achieve
Some connection file
import { ConnectionManager } from 'typeorm';
const c = new ConnectionManager();
// user ormconfig.conf file
export const connection = c.createAndConnect();
using in some model
#Entity()
#Table("annual_incomes")
export class AnnualIncome
{
#PrimaryGeneratedColumn()
id: number;
#Column({ length: 75 })
variant: string;
#Column("int")
sort: number;
#Column()
is_active: boolean;
}
Later somewhere in the code, I want to get connection with all methods, something like:
import { connection } from 'someconnection';
import { AnnualIncome } from 'entities';
// some code here
api.get('/incomes', async(ctx) => {
ctx.body = await connection.getRepository(AnnualIncome).find();
});
Usually, I'm getting an error from tsc that .getRepository() method was not found in connection. However if I do something like:
import { connection } from 'someconnection';
import { AnnualIncome } from 'entities';
// some code here
api.get('/incomes', async(ctx) => {
ctx.body = await connection.then(async connection => {
return await connection.getRepository(AnnualIncome).find();
}
});
the above code works with definitions and tsc does not complain about not-existing methods.
I'd like to avoid an extra definition connection.then() and get plain connection with all methods defined in <Connection> type.

Answer 1

just use createConnection method to create your connection when you bootstrap your application. Later you can access your connection from anywhere using getConnection() method:
import { AnnualIncome } from 'entities';
import { createConnection, getConnection } from 'typeorm';
// somewhere in your app, better where you bootstrap express and other things
createConnection(); // read config from ormconfig.json or pass them here
// some code here
api.get('/incomes', async(ctx) => {
ctx.body = await getConnection().getRepository(AnnualIncome).find();
});
Also you can simply use getRepository method also avalible from anywhere:
import { AnnualIncome } from 'entities';
import { getRepository } from 'typeorm';
// some code here
api.get('/incomes', async (ctx) => {
ctx.body = await getRepository(AnnualIncome).find();
});