export interface PlivoConfig {
    /** Plivo Account Auth ID (used in URL path and as Basic auth username). */
    authId: string;
    /** Plivo Auth Token (Basic auth password). */
    authToken: string;
    /** Default sender (E.164 or short code); per-call overridable. */
    from?: string;
    /** BYO `fetch`. */
    fetch?: typeof fetch;
}