Allow node to run build

[dmytro-kerest]

I believe this is a proper fix to
import { Entity, PrimaryGeneratedColumn, ^ SyntaxError: Unexpected token {

Error.

[bielas]

This is not a good solution. It affects npm run start script. The typeorm will look for entities and ect. in js files which in dev run mode is not avaliable (if you don't build it). It should work in that way that during dev mode you don't have to have compiled ts files to js's.