/**
 * Biometric Processing Web Worker
 * Handles batch processing of biometric data (heart rate, stress, engagement)
 */
interface BiometricMessage {
    command: "processBatch" | "analyze";
    data?: BiometricDataPoint[] | BiometricDataPoint;
}
interface BiometricDataPoint {
    heartRate?: number;
    heartRateVariability?: number;
    skinConductance?: number;
    facialExpression?: string;
    timestamp: number;
}
interface BiometricAnalysis {
    stressLevel: number;
    engagementLevel: number;
    emotionalState: "calm" | "focused" | "stressed" | "excited" | "neutral";
    recommendations: string[];
    timestamp: number;
}
/**
 * Analyze batch of biometric data
 */
declare function processBiometricBatch(batch: BiometricDataPoint[]): BiometricAnalysis;
/**
 * Analyze single biometric data point
 */
declare function analyzeSingleDataPoint(dataPoint: BiometricDataPoint): BiometricAnalysis;
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