import type { PaymentFlow, SciPaymentFlowOptions } from '..';
import type { PaymentAction, PaymentPayParams, PaymentRefundParams } from '../../types';
export declare const SCI_TIMING: {
    readonly verifyStartDelay: 10000;
    readonly verifyInterval: 2000;
    readonly requestTimeout: 10000;
    readonly verifyGlobalTimeout: 120000;
    readonly cancelTimeout: 20000;
};
/** 一个实例贯穿单次 MX51 主请求、verify 与 action。 */
export declare class SciPaymentFlow implements PaymentFlow {
    private readonly options;
    private started;
    private destroyed;
    private settled;
    private waitingForSignature;
    private actionInFlight;
    private verifyStarted;
    private params?;
    private currentVersion?;
    private minVersion?;
    private primaryController?;
    private verifyController?;
    private actionController?;
    private verifyStartTimer?;
    private verifyIntervalTimer?;
    private verifyGlobalTimer?;
    private cancelTimer?;
    private emittedReceipts;
    constructor(options: SciPaymentFlowOptions);
    pay(params: PaymentPayParams): void;
    refund(params: PaymentRefundParams): void;
    action(action: PaymentAction, inputValues?: Record<string, string>): void;
    destroy(): void;
    private start;
    private buildAttemptPayload;
    private handleRawResponse;
    private handlePaymentResult;
    private normalizeProviderResult;
    private emitEffects;
    private emitLoading;
    private ensureVerifyStarted;
    private performVerify;
    private scheduleNextVerify;
    private stopVerification;
    private requestWithTimeout;
    private finishSuccess;
    private finishFailed;
    private isActive;
    private cleanup;
}