export type SurveyAttemptEvent = 'first_interaction' | 'stage_entered' | 'stage_completed' | 'meaningful_activity';
export interface SurveyFlowStage {
    stageKey: string;
    stageLabel: string;
}
type AttemptFetch = typeof fetch;
export declare const createSurveyFlowVersion: (stages: SurveyFlowStage[]) => string;
export declare class SurveyAttemptTracker {
    private readonly endpoint;
    private readonly surveyType;
    private readonly attemptFetch;
    private attemptId;
    private surveyPublicKey;
    private flowVersion;
    private stages;
    private currentStage;
    private encounteredStageKeys;
    private completedStageKeys;
    private firstInteractionSent;
    private firstInteractionRequest;
    private lastMeaningfulActivityAt;
    constructor(endpoint: string, surveyType: string, attemptFetch?: AttemptFetch | null);
    reset(surveyPublicKey: string, stages?: SurveyFlowStage[]): void;
    configureFlow(stages: SurveyFlowStage[]): void;
    markFirstInteraction(): void;
    markStageEntered(stageKey: string): void;
    markStageCompleted(stageKey: string): void;
    markMeaningfulActivity(): void;
    waitForFirstInteraction(timeoutMs?: number): Promise<void>;
    getSubmissionFields(): {
        attemptId: string;
    };
    getFlowVersion(): string;
    private canSend;
    private findStage;
    private send;
}
export {};