emr-types/dist/domains/patient/index.js

Comprehensive TypeScript Types Library for Electronic Medical Record (EMR) Applications - Domain-Driven Design with Zod Validation

// ============================================================================
// PATIENT DOMAIN EXPORTS
// ============================================================================
// Entities
export * from './entities/Patient';
// Value Objects
export * from './value-objects/PatientId';
// Enums
export * from './enums/PatientStatus';
// Events
export * from './events/PatientDomainEvent';
export { PatientStatus, PatientStatusCategories, PatientStatusPriority, PatientStatusDescriptions, PatientStatusUtils, isPatientStatus, isStatusInCategory, DEFAULT_PATIENT_STATUS, PATIENT_STATUS_TRANSITIONS, PatientStatusExamples } from './enums/PatientStatus';
// ============================================================================
// DOMAIN-SPECIFIC UTILITIES
// ============================================================================
/**
 * Patient domain utilities for common operations
 */
export const PatientDomainUtils = {
    /**
     * Calculate patient age from date of birth
     */
    calculateAge(dateOfBirth) {
        const today = new Date();
        let age = today.getFullYear() - dateOfBirth.getFullYear();
        const monthDiff = today.getMonth() - dateOfBirth.getMonth();
        if (monthDiff < 0 || (monthDiff === 0 && today.getDate() < dateOfBirth.getDate())) {
            age--;
        }
        return age;
    },
    /**
     * Calculate BMI from height and weight
     */
    calculateBMI(height, weight) {
        if (height <= 0 || weight <= 0)
            return 0;
        const heightInMeters = height / 100;
        return weight / (heightInMeters * heightInMeters);
    },
    /**
     * Get BMI category
     */
    getBMICategory(bmi) {
        if (bmi < 18.5)
            return 'Underweight';
        if (bmi < 25)
            return 'Normal weight';
        if (bmi < 30)
            return 'Overweight';
        return 'Obese';
    },
    /**
     * Format patient name
     */
    formatPatientName(firstName, lastName, middleName) {
        const parts = [firstName];
        if (middleName)
            parts.push(middleName);
        parts.push(lastName);
        return parts.join(' ');
    },
    /**
     * Generate patient code
     */
    generatePatientCode(tenantId, sequence) {
        const tenantPrefix = tenantId.substring(0, 3).toUpperCase();
        const paddedSequence = sequence.toString().padStart(6, '0');
        return `${tenantPrefix}${paddedSequence}`;
    },
    /**
     * Validate patient data
     */
    validatePatientData(patient) {
        const errors = [];
        if (!patient.firstName?.trim()) {
            errors.push('First name is required');
        }
        if (!patient.lastName?.trim()) {
            errors.push('Last name is required');
        }
        if (!patient.dateOfBirth) {
            errors.push('Date of birth is required');
        }
        else if (patient.dateOfBirth > new Date()) {
            errors.push('Date of birth cannot be in the future');
        }
        if (patient.email && !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(patient.email)) {
            errors.push('Invalid email format');
        }
        if (patient.phoneNumber && !/^\+?[\d\s\-\(\)]+$/.test(patient.phoneNumber)) {
            errors.push('Invalid phone number format');
        }
        return {
            isValid: errors.length === 0,
            errors
        };
    }
};
// ============================================================================
// TYPE GUARDS
// ============================================================================
/**
 * Type guard to check if a value is a Patient entity
 */
export function isPatient(value) {
    return (typeof value === 'object' &&
        value !== null &&
        'id' in value &&
        'tenantId' in value &&
        'firstName' in value &&
        'lastName' in value &&
        'dateOfBirth' in value);
}
/**
 * Type guard to check if a value is a PatientProfile
 */
export function isPatientProfile(value) {
    return (typeof value === 'object' &&
        value !== null &&
        'patientId' in value &&
        'language' in value &&
        'smokingStatus' in value &&
        'alcoholConsumption' in value &&
        'exerciseFrequency' in value);
}
/**
 * Type guard to check if a value is a MedicalHistory
 */
export function isMedicalHistory(value) {
    return (typeof value === 'object' &&
        value !== null &&
        'patientId' in value &&
        'familyHistory' in value &&
        'pastMedicalConditions' in value &&
        'currentSymptoms' in value &&
        'vitalSigns' in value &&
        'medicationHistory' in value &&
        'immunizations' in value &&
        'labResults' in value &&
        'imagingResults' in value &&
        'socialHistory' in value);
}
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