import { DynamicModule, ModuleMetadata, Provider } from '@nestjs/common';
import { GCPubSubClientOptions } from './gc-pubsub.interface';
export interface GCPubSubRegisterClientOptions {
    name: string;
    config: GCPubSubClientOptions;
}
export interface GCPubSubRegisterClientAsyncOption extends Pick<ModuleMetadata, 'imports'> {
    name: string;
    useFactory?: (...args: any[]) => Promise<GCPubSubClientOptions> | GCPubSubClientOptions;
    inject?: any[];
    extraProviders?: Provider[];
}
export declare class GCPubSubClientModule {
    static register(options: GCPubSubRegisterClientOptions[]): DynamicModule;
    static registerAsync(options: GCPubSubRegisterClientAsyncOption[]): DynamicModule;
    private static createAsyncProviders;
    private static createFactoryWrapper;
    private static assignOnAppShutdownHook;
}