/**
 * @module
 * Unifonic SMS REST transport (el.cloud).
 *
 * Aligned with Unifonic Send Message
 * (`POST https://el.cloud.unifonic.com/rest/SMS/messages`):
 * JSON body with `AppSid`, `SenderID`, `Recipient`, `Body`.
 *
 * Sently-first: wire into {@link createSmsSender}.
 *
 * @example
 * ```ts
 * import { createSmsSender } from "sently/sms";
 * import { UnifonicTransport } from "sently/transports/unifonic";
 *
 * const sms = createSmsSender({
 *   transport: new UnifonicTransport({
 *     appSid: process.env.UNIFONIC_APPSID!,
 *     senderId: "MyBrand",
 *   }),
 * });
 *
 * await sms.send({ to: "+9665xxxxxxxx", body: "Hello" });
 * ```
 */
import { SentlyError } from "../core/errors.js";
import type { SmsOptions, SmsSendResult, SmsTransport } from "../core/sms-types.js";
import type { VerifyResult } from "../core/types.js";
/** Unifonic SMS API configuration. */
export interface UnifonicConfig {
    /**
     * Application SID (`AppSid`) from the Unifonic dashboard.
     * Store in environment variables — never hardcode.
     */
    appSid: string;
    /**
     * Default SenderID (brand / approved sender). Required unless every send
     * passes `options.from` (mapped to `SenderID`).
     */
    senderId?: string;
    /**
     * Optional delivery status callback URL forwarded as `statusCallback`.
     * Unifonic requires a public HTTPS URL (el.cloud OpenAPI).
     */
    statusCallback?: string;
    /**
     * When true, request async execution (`async: true`). Default: false.
     */
    async?: boolean;
}
/** Error thrown when the Unifonic SMS API returns a non-success response. */
export declare class UnifonicError extends SentlyError {
    readonly statusCode: number;
    readonly apiError: unknown;
    /** Creates a Unifonic SMS API error with status code and response payload. */
    constructor(message: string, statusCode: number, apiError: unknown);
}
/**
 * Normalize a phone number for Unifonic: international digits without `+` or
 * leading `00`.
 */
export declare function normalizeUnifonicPhone(to: string): string;
/**
 * Unifonic SMS transport via el.cloud REST (`AppSid` + JSON).
 */
export declare class UnifonicTransport implements SmsTransport {
    readonly provider = "unifonic";
    private readonly appSid;
    private readonly senderId;
    private readonly statusCallback;
    private readonly async;
    /** Creates an Unifonic SMS transport. */
    constructor(config: UnifonicConfig);
    /**
     * Sends an SMS via `POST https://el.cloud.unifonic.com/rest/SMS/messages`
     * (JSON: `AppSid`, `SenderID`, `Recipient`, `Body`; optional `CorrelationID`).
     */
    send(options: SmsOptions): Promise<SmsSendResult>;
    /** Lightweight credential check. */
    verify(): Promise<VerifyResult>;
}