Backstage auth0 example

auth.ts

import {
    createRouter,
    providers,
    defaultAuthProviderFactories,
} from '@backstage/plugin-auth-backend';
import {Router} from 'express';
import {PluginEnvironment} from '../types';

export default async function createPlugin(
    env: PluginEnvironment,
): Promise<Router> {
    return await createRouter({
        logger: env.logger,
        config: env.config,
        database: env.database,
        discovery: env.discovery,
        tokenManager: env.tokenManager,
        providerFactories: {
            // all providers
            ...defaultAuthProviderFactories,
            // or just auth0
            auth0: providers.auth0.create(),
        }
    });
}