import type { PaymentDetailsUpdate } from '../../@standard/w3c/payment-details-update';
import type { PaymentRequestEventType } from '../../type/payment-request-event.type';
import type { PaymentRequestUpdateHandler } from '../../type/payment-request-update-handler.type';
/**
 * The W3C `PaymentRequestUpdateEvent` interface.
 *
 * @see https://www.w3.org/TR/payment-request/#dom-paymentrequestupdateevent
 */
export declare class PaymentRequestUpdateEvent {
    readonly type: PaymentRequestEventType;
    private isUpdated;
    private readonly onUpdateWith;
    constructor(type: PaymentRequestEventType, onUpdateWith: PaymentRequestUpdateHandler);
    /**
     * Whether `updateWith()` was already called for this event, so a later listener can skip an answered one.
     *
     * @see https://github.com/rnw-community/rnw-community/blob/master/packages/react-native-payments/docs/api/payment-request-update-event.md
     */
    get isAnswered(): boolean;
    /**
     * The W3C `PaymentRequestUpdateEvent.updateWith()` method answering the change event with updated details.
     *
     * @see https://github.com/rnw-community/rnw-community/blob/master/packages/react-native-payments/docs/api/payment-request-update-event.md
     * @see https://www.w3.org/TR/payment-request/#dom-paymentrequestupdateevent-updatewith
     */
    updateWith(detailsUpdate: PaymentDetailsUpdate | Promise<PaymentDetailsUpdate>): void;
}
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