Issue type:

[ ] question
[x] bug report
[ ] feature request
[ ] documentation issue

Database system/driver:

[ ] cordova
[ ] mongodb
[ ] mssql
[ ] mysql / mariadb
[ ] oracle
[ ] postgres
[ ] cockroachdb
[ ] sqlite
[x] sqljs
[ ] react-native
[ ] expo

TypeORM version:

[ ] latest
[ ] @next
[x ] 0.2.25

Steps to reproduce or a small repository showing the problem:
I have been using Typeorm and Sqljs with Nextjs. I have to transpile module typeorm/browser at build time to generate static HTML files. This had been working until Typeorm upgraded to 0.2.25.

Here's the example repo: https://github.com/Project-Setup/github_sql_pwa/tree/typeorm-0.2.25
To reproduce:

1. git clone the repo
2. set up node environment

   nvm install; nvm use; npm install

3. build pages

   npm run build

an error will come out:

Creating an optimized production build  

Failed to compile.

./node_modules/typeorm/browser/driver/DriverFactory.js
Attempted import error: 'AuroraDataApiPostgresDriver' is not exported from './postgres/PostgresDriver'.


> Build error occurred
Error: > Build failed because of webpack errors

Reverting Typeorm to 0.2.24 will fix the issue.

I think the issue lies in typescript declaration file node_modules/typeorm/browser/driver/postgres/PostgresDriver.d.ts. It may have a problem exporting multiple classes under the current setup, but I wasn't sure.