import { BaseConnector } from '../../base/base.connector';
import type { ISmsOptions, ISmsProvider, ISendMessageSuccessResponse, WithPassthrough, SmsSendResult, ISmsConnector } from '../../types';
import { ChannelTypeEnum } from '../../types';
import type { SnsConfig } from './sns.config';
import type { SnsNarrowedInput } from './sns.types';
export declare class SnsSmsConnector extends BaseConnector implements ISmsProvider, ISmsConnector {
    private config;
    readonly id = "sns";
    readonly channelType: ChannelTypeEnum.SMS;
    constructor(config: SnsConfig, fetchImpl?: typeof fetch);
    /**
     * Thinwrap-native send. Implements `ISmsConnector`.
     * Builds an `application/x-www-form-urlencoded` AWS Query API body, signs
     * with hand-rolled AWS Sig V4 against `node:crypto` (no third-party crypto
     * dependency — see `signSnsRequest`), and POSTs to
     * `https://sns.<region>.amazonaws.com/`.
     *
     * Outlier locality wins over DRY: the signer lives inside this
     * connector module even though the SES connector holds a near-identical
     * copy.
     *
     * `messageAttributes` is flattened into the indexed AWS Query form
     * (`MessageAttributes.entry.N.Name` / `.Value.DataType` / `.Value.StringValue`)
     * BEFORE signing, so the signed canonical request covers the flattened keys.
     * `_passthrough` body merge also happens before signing so consumer-supplied
     * extra fields authenticate alongside the connector-built ones.
     */
    send(input: SnsNarrowedInput): Promise<SmsSendResult>;
    /**
     * Map SNS XML 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
     * top-level structured `retryAfterSeconds` field — retry is consumer policy.
     */
    private mapVendorError;
    sendMessage(options: ISmsOptions, bridgeProviderData?: WithPassthrough<Record<string, unknown>>): Promise<ISendMessageSuccessResponse>;
}