Не удается решить эту проблему:
app.component.ts
import { AngularFire, AuthProviders, AuthMethods } from 'angularfire2';
/angularfire2/index has no exported member 'AngularFire',
/angularfire2/index has no exported member 'AuthProviders',
/angularfire2/index has no exported member 'AuthMethods '
но в app.module.ts
import { AngularFireModule } from 'angularfire2';
отлично работает, и я могу инициализировать приложение
package.json
"angularfire2": "^4.0.0-rc.0",
"core-js": "^2.4.1",
"firebase": "^3.9.0",
...
"devDependencies": {...
"ts-node": "~2.0.0",
"tslint": "~4.5.0",
"typescript": "~2.2.0"