import type { TwilioEdge, TwilioRegion } from './twilio.types';
export interface TwilioConfig {
    accountSid: string;
    authToken: string;
    /** Default sender (E.164 or short code); per-call overridable. */
    from?: string;
    /**
     * Processing region; omit for us1 (`api.twilio.com`). `ie1` defaults to the
     * `dublin` edge and `au1` to `sydney`, because Twilio requires an edge in
     * every non-US hostname (`api.{edge}.{region}.twilio.com`). Twilio's
     * regional product-availability page does not list Programmable Messaging
     * among AU1's products.
     */
    region?: TwilioRegion;
    /**
     * Edge location override. With `region` unset it pins the us1 edge
     * (`api.{edge}.us1.twilio.com`).
     */
    edge?: TwilioEdge;
    /** BYO `fetch`. */
    fetch?: typeof fetch;
}