import { type FirebaseApp } from '@react-native-firebase/app';
import type { Functions, HttpsCallableOptions, HttpsCallable } from './types/functions';
/**
 * Returns a Functions instance for the given app.
 * @param app - The FirebaseApp to use. Optional.
 * @param regionOrCustomDomain - One of: a) The region the callable functions are located in (ex: us-central1) b) A custom domain hosting the callable functions (ex: https://mydomain.com). Optional.
 * @returns Functions instance for the given app.
 */
export declare function getFunctions(app?: FirebaseApp, regionOrCustomDomain?: string): Functions;
/**
 * Modify this instance to communicate with the Cloud Functions emulator.
 * Note: this must be called before this instance has been used to do any operations.
 * @param functionsInstance A functions instance.
 * @param host The emulator host. (ex: localhost)
 * @param port The emulator port. (ex: 5001)
 */
export declare function connectFunctionsEmulator(functionsInstance: Functions, host: string, port: number): void;
/**
 * Returns a reference to the callable HTTPS trigger with the given name.
 * @param functionsInstance A functions instance.
 * @param name The name of the trigger.
 * @param options An interface for metadata about how calls should be executed.
 * @returns HttpsCallable instance
 */
export declare function httpsCallable<RequestData = unknown, ResponseData = unknown, StreamData = unknown>(functionsInstance: Functions, name: string, options?: HttpsCallableOptions): HttpsCallable<RequestData, ResponseData, StreamData>;
/**
 * Returns a reference to the callable HTTPS trigger with the specified url.
 * @param functionsInstance A functions instance.
 * @param url The url of the trigger.
 * @param options An instance of HttpsCallableOptions containing metadata about how calls should be executed.
 * @returns HttpsCallable instance
 */
export declare function httpsCallableFromUrl<RequestData = unknown, ResponseData = unknown, StreamData = unknown>(functionsInstance: Functions, url: string, options?: HttpsCallableOptions): HttpsCallable<RequestData, ResponseData, StreamData>;
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