/**
 * Configuration options for the MSG91 client
 */
export interface Msg91Config {
    /** Your MSG91 auth key */
    authKey: string;
    /** Base URL for SMS OTP API (default: https://control.msg91.com/api/v5) */
    baseUrl?: string;
    /** Base URL for WhatsApp API (default: https://api.msg91.com/api/v5) */
    whatsappBaseUrl?: string;
    /** Request timeout in milliseconds (default: 30000) */
    timeout?: number;
    /** Maximum number of retries for failed requests (default: 2) */
    maxRetries?: number;
    /** Delay between retries in milliseconds (default: 1000) */
    retryDelay?: number;
}
/**
 * Options that can be passed to individual API calls
 */
export interface Msg91RequestOptions {
    /** Custom timeout for this request */
    timeout?: number;
    /** AbortSignal for request cancellation */
    signal?: AbortSignal;
}
/**
 * Internal resolved configuration with all defaults applied
 */
export interface ResolvedConfig {
    authKey: string;
    baseUrl: string;
    whatsappBaseUrl: string;
    timeout: number;
    maxRetries: number;
    retryDelay: number;
}
/**
 * Default configuration values
 */
export declare const DEFAULT_CONFIG: {
    readonly baseUrl: "https://control.msg91.com/api/v5";
    readonly whatsappBaseUrl: "https://api.msg91.com/api/v5";
    readonly timeout: 30000;
    readonly maxRetries: 2;
    readonly retryDelay: 1000;
};
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