import type { RumEvent, RumEventDomainContext, RumInitConfiguration } from '@datadog/browser-rum';
/**
 * Used for `application.beforeSend`. Returning `false` drops the event app-wide;
 * `void` / `true` passes it through.
 */
export type ApplicationBeforeSendHandler = (event: RumEvent, context: RumEventDomainContext) => boolean | void;
/**
 * Used for per-service `beforeSend`. Transform-only: the return value is
 * ignored. Only `application.beforeSend` may drop events.
 */
export type ServiceBeforeSendHandler = (event: RumEvent, context: RumEventDomainContext) => void;
export declare function beforeSend(handler?: RumInitConfiguration['beforeSend']): NonNullable<RumInitConfiguration['beforeSend']>;
//# sourceMappingURL=before-send.d.ts.map