import { BaseConnector } from '../../base/base.connector.js';
import type { ISmsOptions, ISmsProvider, ISendMessageSuccessResponse, WithPassthrough, SmsSendResult, ISmsConnector } from '../../types/index.js';
import { ChannelTypeEnum } from '../../types/index.js';
import type { TwilioConfig } from './twilio.config.js';
import type { TwilioNarrowedInput, TwilioRegion, TwilioEdge } from './twilio.types.js';
/**
 * Default edge per non-US processing region. Twilio: "The edge location name
 * (dublin, sydney) is a required part of the hostname for non-US regions", and
 * the legacy-regions table pairs ie1 with dublin and au1 with sydney. No Twilio
 * SDK ships such a map (they require the caller to pass both), so this is the
 * library's documented default.
 */
export declare const TWILIO_DEFAULT_EDGES: Readonly<Record<Exclude<TwilioRegion, 'us1'>, TwilioEdge>>;
/**
 * Resolve the Messages API host for a region/edge pair, following Twilio's
 * documented `PRODUCT.EDGE.REGION.twilio.com` shape. Both values are
 * interpolated into the hostname the Basic credentials are sent to, so each
 * must come from the closed lists above; anything else is rejected before a
 * request is built.
 */
export declare function twilioApiHost(region: string | undefined, edge: string | undefined): string;
export declare class TwilioSmsConnector extends BaseConnector implements ISmsProvider, ISmsConnector {
    private config;
    readonly id = "twilio";
    readonly channelType: ChannelTypeEnum.SMS;
    constructor(config: TwilioConfig, fetchImpl?: typeof fetch);
    /**
     * Thinwrap-native send. Implements `ISmsConnector`.
     * Builds an `application/x-www-form-urlencoded` body in PascalCase wire
     * shape, authenticates with HTTP Basic (`accountSid:authToken`), and POSTs
     * to the Twilio Messages endpoint for `config.region` / `config.edge`
     * (see {@link twilioApiHost}).
     *
     * the connector explicitly invokes
     * `transformKeys(_passthrough.body, CasingEnum.PASCAL_CASE)` so consumer-
     * supplied camelCase keys (e.g., `messagingServiceSid`) land as PascalCase
     * (`MessagingServiceSid`) in the form body alongside the connector-built
     * fields.
     *
     * `mediaUrl` (string[]) is encoded as multiple `MediaUrl=` form fields per
     * Twilio's documented multi-attachment shape — never comma-joined.
     */
    send(input: TwilioNarrowedInput): Promise<SmsSendResult>;
    private messagesUrl;
    /**
     * Map Twilio error responses to canonical `ConnectorError` with the 6-value
     * `ProviderCode` union. Parses `Retry-After`:
     * parsed seconds embedded in `providerMessage` text; raw header
     * value on `cause.retryAfter`. No structured `retryAfterSeconds` field per
     * Retry is consumer policy (no retryAfterSeconds field).
     */
    private mapVendorError;
    sendMessage(options: ISmsOptions, bridgeProviderData?: WithPassthrough<Record<string, unknown>>): Promise<ISendMessageSuccessResponse>;
}