import { QonversionConfig } from './QonversionConfig';
import { QonversionApi } from './QonversionApi';
export default class Qonversion {
    private constructor();
    private static backingInstance;
    /**
     * Use this variable to get a current initialized instance of the Qonversion SDK.
     * Please, use the property only after calling {@link Qonversion.initialize}.
     * Otherwise, trying to access the variable will cause an exception.
     *
     * @return Current initialized instance of the Qonversion SDK.
     * @throws error if the instance has not been initialized
     */
    static getSharedInstance(): QonversionApi;
    /**
     * An entry point to use Qonversion SDK. Call to initialize Qonversion SDK with required and extra configs.
     * The function is the best way to set additional configs you need to use Qonversion SDK.
     * You still have an option to set a part of additional configs later via calling separate setters.
     *
     * @param config a config that contains key SDK settings.
     *        Call {@link QonversionConfigBuilder.build} to configure and create a QonversionConfig instance.
     * @return Initialized instance of the Qonversion SDK.
     */
    static initialize(config: QonversionConfig): QonversionApi;
}