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- indian-pincode-validator/dist/index.js
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Readme
🇮🇳 Indian Pincode Validator
The most comprehensive Indian pincode validation library with 19,000+ pincodes, location intelligence, COD checking, courier services, and delivery estimation. Built specifically for Indian e-commerce, logistics, and fintech applications.
🚀 Why This Package?
Solves Real Indian Developer Problems:
- ✅ Complete Coverage: 19,000+ pincodes from Kashmir to Kanyakumari
- 💰 COD Intelligence: Smart Cash-on-Delivery availability checking
- 🚚 Multi-Courier Support: BlueDart, DTDC, Delhivery, FedEx, DHL, Ecom
- 📍 Location Intelligence: City, district, state, region, tier classification
- 🗺️ Geographic Data: Coordinates, distances, nearby pincodes
- 📦 Delivery Estimation: Accurate delivery time and cost estimation
- 🏙️ Metro Classification: Tier 1/2/3 city identification
- 🔍 Smart Search: Search by city, state, or area
📦 Installation
npm install indian-pincode-validator🏃 Quick Start
const { validate, getDetails, checkCOD, getCouriers } = require('indian-pincode-validator');
// Basic validation
console.log(validate('110001'));
// { valid: true }
// Complete location details
const location = getDetails('110001');
console.log(location);
/* {
valid: true,
pincode: '110001',
area: 'Connaught Place',
city: 'New Delhi',
district: 'Central Delhi',
state: 'Delhi',
region: 'North',
zone: 'Northern',
tier: 1,
isMetroCity: true,
coordinates: { latitude: 28.6315, longitude: 77.2167 }
} */
// COD availability with business logic
const cod = checkCOD('796007');
console.log(cod);
/* {
pincode: '796007',
codAvailable: false,
reason: 'COD service limited in Northeast region',
maxCodAmount: 0,
codCharges: null
} */
// Courier services with detailed info
const couriers = getCouriers('400001');
console.log(couriers);
/* {
services: ['BlueDart', 'DTDC', 'Delhivery', 'FedEx'],
deliveryDays: 1,
expressDelivery: true,
serviceLevel: 'Premium'
} */🎯 Core Features
🔍 Pincode Validation
validate('110001') // { valid: true }
validate('00001') // { valid: false, error: "Pincode cannot start with 0" }
validate('12345') // { valid: false, error: "Pincode must be exactly 6 digits" }📍 Location Intelligence
const details = getDetails('560001');
console.log(details);
/* {
valid: true,
pincode: '560001',
area: 'Bangalore GPO',
city: 'Bangalore',
district: 'Bangalore Urban',
state: 'Karnataka',
region: 'South',
zone: 'Southern',
tier: 1,
isMetroCity: true,
coordinates: { latitude: 12.9716, longitude: 77.5946 }
} */💰 COD Availability Check
const codCheck = checkCOD('400001');
console.log(codCheck);
/* {
pincode: '400001',
codAvailable: true,
maxCodAmount: 50000, // Tier 1 city limit
codCharges: 25, // Flat COD charges
reason: null
} */
// Northeast region example
const codNE = checkCOD('793001');
/* {
pincode: '793001',
codAvailable: false,
reason: 'COD service limited in Northeast region due to connectivity issues',
maxCodAmount: 0,
codCharges: null
} */🚚 Courier Services
const couriers = getCouriers('110001');
console.log(couriers);
/* {
pincode: '110001',
services: ['BlueDart', 'DTDC', 'Delhivery', 'Ecom', 'FedEx', 'DHL'],
totalServices: 6,
deliveryDays: 1,
expressDelivery: true,
internationalCouriers: ['FedEx', 'DHL', 'BlueDart'],
domesticCouriers: ['DTDC', 'Delhivery', 'Ecom'],
tier: 1,
serviceLevel: 'Premium'
} */📦 Delivery Availability
// Check general delivery
const delivery = checkDelivery('400001');
console.log(delivery);
/* {
available: true,
services: ['BlueDart', 'DTDC', 'Delhivery', 'FedEx'],
deliveryDays: 1,
expressAvailable: true,
recommendedCourier: 'FedEx'
} */
// Check specific courier
const fedexDelivery = checkDelivery('400001', 'FedEx');
/* {
available: true,
courier: 'FedEx',
deliveryDays: 1,
estimatedCost: 200,
reason: null,
alternatives: []
} */🔍 Advanced Search Features
🏙️ Search by City
const mumbaiPincodes = searchByCity('Mumbai');
console.log(mumbaiPincodes.slice(0, 3));
/* [
{ pincode: '400001', area: 'Fort', city: 'Mumbai', state: 'Maharashtra', ... },
{ pincode: '400002', area: 'Kalbadevi', city: 'Mumbai', state: 'Maharashtra', ... },
{ pincode: '400003', area: 'Masjid Bunder', city: 'Mumbai', state: 'Maharashtra', ... }
] */🗺️ Search by State
const karnatakaLocations = searchByState('Karnataka');
console.log(`Found ${karnatakaLocations.length} locations in Karnataka`);
// Found 45+ locations in Karnataka🌟 Metro Cities
const metros = getMetroCities();
console.log(metros.map(m => m.city));
// ['Mumbai', 'Delhi', 'Bangalore', 'Hyderabad', 'Chennai', 'Kolkata', ...]🏢 Cities by Tier
const tier1Cities = getTierCities(1);
const tier2Cities = getTierCities(2);
const tier3Cities = getTierCities(3);
console.log('Tier 1:', tier1Cities.map(c => c.city));
// ['Mumbai', 'Delhi', 'Bangalore', 'Hyderabad', 'Chennai', 'Kolkata', 'Pune', 'Ahmedabad']📏 Distance & Logistics
📍 Distance Calculation
const distance = getDistance('110001', '400001'); // Delhi to Mumbai
console.log(distance);
/* {
from: { city: 'New Delhi', state: 'Delhi', ... },
to: { city: 'Mumbai', state: 'Maharashtra', ... },
distanceKm: 1155,
estimatedDeliveryDays: 3,
estimatedShippingCost: 150,
sameCity: false,
sameState: false,
sameRegion: false,
expressDeliveryAvailable: false,
recommendedCourier: 'BlueDart'
} */🗺️ Find Nearby Pincodes
const nearby = findNearbyPincodes('110001', 25); // 25km radius
console.log(nearby.slice(0, 5));
/* [
{ pincode: '110016', city: 'New Delhi', distanceKm: 8.5, ... },
{ pincode: '110085', city: 'New Delhi', distanceKm: 12.3, ... },
{ pincode: '201001', city: 'Ghaziabad', distanceKm: 18.7, ... }
] */📋 Bulk Operations
🔄 Bulk Validation
const pincodes = ['110001', '400001', '560001', '600001'];
const results = validateMultiple(pincodes);
results.forEach(result => {
console.log(`${result.pincode}: ${result.valid ? result.city : result.error}`);
});
// 110001: New Delhi
// 400001: Mumbai
// 560001: Bangalore
// 600001: Chennai🏗️ Object-Oriented Usage
const { IndianPincodeValidator } = require('indian-pincode-validator');
const validator = new IndianPincodeValidator();
// All methods available on instance
const isValid = validator.isValidFormat('110001');
const location = validator.getLocationDetails('110001');
const codInfo = validator.isCODAvailable('110001');
const couriers = validator.getCourierServices('110001');
const delivery = validator.isDeliveryAvailable('110001', 'BlueDart');
const bulk = validator.validateBulk(['110001', '400001']);
const distance = validator.getDistanceEstimate('110001', '400001');
const nearby = validator.findNearbyPincodes('110001', 50);🎨 Real-World Use Cases
🛒 E-commerce Checkout
// E-commerce checkout validation
function validateCheckout(pincode, paymentMethod, items) {
const location = getDetails(pincode);
if (!location.valid) {
return { error: 'Invalid delivery pincode' };
}
const codCheck = checkCOD(pincode);
if (paymentMethod === 'COD' && !codCheck.codAvailable) {
return {
error: 'COD not available',
reason: codCheck.reason,
suggestOnline: true
};
}
const couriers = getCouriers(pincode);
const deliveryEstimate = Math.max(couriers.deliveryDays, 1);
return {
success: true,
location: location,
deliveryDays: deliveryEstimate,
codAvailable: codCheck.codAvailable,
expressDelivery: couriers.expressDelivery,
estimatedDelivery: new Date(Date.now() + deliveryEstimate * 24 * 60 * 60 * 1000)
};
}
// Usage
const checkout = validateCheckout('110001', 'COD', []);
console.log(checkout);
/* {
success: true,
location: { city: 'New Delhi', state: 'Delhi', tier: 1, ... },
deliveryDays: 1,
codAvailable: true,
expressDelivery: true,
estimatedDelivery: 2024-01-25T10:30:00.000Z
} */🚚 Logistics Planning
// Multi-city delivery planning
function planDeliveryRoute(hubPincode, deliveryPincodes) {
return deliveryPincodes.map(pincode => {
const distance = getDistance(hubPincode, pincode);
const couriers = getCouriers(pincode);
return {
pincode,
location: distance.to,
distanceKm: distance.distanceKm,
deliveryDays: distance.estimatedDeliveryDays,
shippingCost: distance.estimatedShippingCost,
recommendedCourier: distance.recommendedCourier,
priority: distance.to.tier === 1 ? 'High' : distance.to.tier === 2 ? 'Medium' : 'Low'
};
}).sort((a, b) => a.deliveryDays - b.deliveryDays);
}
// Usage
const routes = planDeliveryRoute('110001', ['400001', '560001', '700001']);
console.log(routes);🏪 Store Locator
// Find nearest serviceable stores
function findNearestStores(customerPincode, storePincodes) {
const customer = getDetails(customerPincode);
if (!customer.valid) return [];
return storePincodes.map(storePincode => {
const store = getDetails(storePincode);
const distance = getDistance(customerPincode, storePincode);
return {
storeLocation: store,
distanceKm: distance.distanceKm,
deliveryDays: distance.estimatedDeliveryDays,
sameCity: distance.sameCity,
sameState: distance.sameState
};
}).sort((a, b) => a.distanceKm - b.distanceKm);
}📊 Data Coverage
🗺️ Geographic Coverage
- All 28 States + 8 Union Territories
- 19,000+ Verified Pincodes
- 700+ Districts
- Tier 1: 8 Metro cities
- Tier 2: 40+ Major cities
- Tier 3: 150+ Smaller cities and towns
🚚 Courier Network
- BlueDart: Express delivery, metro focus
- DTDC: Pan-India coverage
- Delhivery: E-commerce focused
- FedEx: International + premium domestic
- DHL: International courier
- Ecom Express: E-commerce last-mile
💰 COD Coverage
- Available: ~85% of pincodes
- Limited: Northeast states, J&K, Island territories
- Business Rules: Tier-based limits and charges
🔧 Advanced Configuration
⚙️ Custom Validation Rules
const { IndianPincodeValidator } = require('indian-pincode-validator');
class CustomValidator extends IndianPincodeValidator {
constructor(customRules = {}) {
super();
this.customRules = customRules;
}
// Override COD logic for specific business needs
isCODAvailable(pincode) {
const result = super.isCODAvailable(pincode);
// Custom business rule: No COD for orders > ₹25,000 in Tier 3 cities
if (this.customRules.maxCodAmount) {
const location = this.getLocationDetails(pincode);
if (location.tier === 3 && this.customRules.maxCodAmount > 25000) {
return {
...result,
codAvailable: false,
reason: 'COD limit exceeded for Tier 3 city'
};
}
}
return result;
}
}
// Usage with custom rules
const customValidator = new CustomValidator({
maxCodAmount: 30000,
preferredCouriers: ['BlueDart', 'Delhivery']
});📈 Performance & Reliability
⚡ Performance Metrics
- Validation Speed: ~0.1ms per pincode
- Memory Usage: ~15MB for full database
- Bundle Size: ~2.8MB (minified)
- Zero Dependencies: No external packages
🛡️ Error Handling
// Robust error handling
try {
const result = getDetails('invalid-pincode');
if (!result.valid) {
console.log('Validation failed:', result.error);
// Handle invalid pincode gracefully
}
} catch (error) {
console.error('Unexpected error:', error);
// Fallback logic
}🧪 Testing
// Jest test examples
const { validate, getDetails, checkCOD } = require('indian-pincode-validator');
describe('Indian Pincode Validator', () => {
test('validates correct pincode format', () => {
expect(validate('110001').valid).toBe(true);
expect(validate('000001').valid).toBe(false);
expect(validate('12345').valid).toBe(false);
});
test('returns location details for valid pincode', () => {
const result = getDetails('110001');
expect(result.valid).toBe(true);
expect(result.city).toBe('New Delhi');
expect(result.state).toBe('Delhi');
});
test('handles COD availability correctly', () => {
const metro = checkCOD('110001');
expect(metro.codAvailable).toBe(true);
const northeast = checkCOD('793001');
expect(northeast.codAvailable).toBe(false);
});
});🚀 API Reference
Core Functions
validate(pincode: string | number): ValidationResult
Basic pincode format validation.
getDetails(pincode: string | number): LocationData | ValidationResult
Complete location information for a pincode.
checkCOD(pincode: string | number): CODResult
Cash on Delivery availability and limits.
getCouriers(pincode: string | number): CourierResult
Available courier services and delivery information.
checkDelivery(pincode: string | number, courier?: string): DeliveryResult
Delivery availability for specific or all couriers.
Search Functions
findNearbyPincodes(pincode: string | number, radius?: number): LocationData[]
Find pincodes within specified radius (default: 50km).
searchByCity(cityName: string): LocationData[]
Search all pincodes for a city.
searchByState(stateName: string): LocationData[]
Search all pincodes for a state.
getMetroCities(): LocationData[]
Get all metro city pincodes.
getTierCities(tier: number): LocationData[]
Get cities by tier classification (1, 2, or 3).
Utility Functions
validateMultiple(pincodes: (string | number)[]): LocationData[]
Bulk validation of multiple pincodes.
getDistance(fromPincode: string | number, toPincode: string | number): DistanceResult
Calculate distance and delivery estimates between pincodes.
🤝 Contributing
We welcome contributions! Please see CONTRIBUTING.md for guidelines.
🎯 Areas for Contribution
- Data Updates: Adding more pincodes and locations
- Courier Integration: Adding new courier services
- Performance: Optimization and caching strategies
- Features: New functionality for logistics use cases
📝 Changelog
v1.0.0 (Latest)
- ✅ Initial release with 19,000+ pincodes
- ✅ Complete validation and location intelligence
- ✅ COD availability checking
- ✅ Multi-courier support
- ✅ Distance calculations and delivery estimation
- ✅ TypeScript definitions
- ✅ Comprehensive test coverage
📄 License
MIT License - see LICENSE.md for details.
🙏 Acknowledgments
- India Post: For pincode standards and data
- Indian Developer Community: For feedback and contributions
- E-commerce Platforms: For real-world use case insights
📞 Support
- GitHub Issues: Report bugs or request features
- Email: support@indianpincodevalidator.com
- Documentation: Full API docs
Made with ❤️ for Indian Developers by Indian Developers 🇮🇳