import { IntegrationStrategy, IntegrationResult } from '../integration.strategy';
export declare class Msg91SmsStrategy implements IntegrationStrategy {
    private readonly logger;
    private readonly defaultBaseUrl;
    sendMessage(to: string, message: string, config: any): Promise<IntegrationResult>;
    private formatPhoneNumber;
    private extractErrorMessage;
    validateConfig(config: any): boolean;
}