/**
 * The billing events an outbound webhook announces.
 *
 * Separate from `WebhookEventType`, which names the events of the job
 * deliveries `GET /webhooks/deliveries` lists. `GET /webhooks/deliveries`
 * does not list these.
 */
export declare const BillingEventType: {
    readonly BillingTopOffFailed: "billing.top_off_failed";
};
export type BillingEventType = (typeof BillingEventType)[keyof typeof BillingEventType];