devmehq
diff --git a/‎.github/workflows/ci.yml‎
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Lines changed: 5 additions & 2 deletions
diff --git a/‎.github/workflows/release.yml‎
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diff --git a/‎API.md‎
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diff --git a/‎CHANGELOG.md‎
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@@ -5,6 +5,7 @@ on:
   push:
     paths:
       - 'src/**'
+      - '__tests__/**'
       - 'package.json'
       - 'yarn.lock'
       - 'release.config.js'
@@ -36,10 +37,9 @@ jobs:
     steps:
       - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 30
-          persist-credentials: false
 
       - uses: FranzDiebold/github-env-vars-action@v2
 
@@ -59,4 +59,7 @@ jobs:
       - name: Release
         if: github.ref == 'refs/heads/develop'
         run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "Dev.me Team"
+          npm set //registry.npmjs.org/:_authToken $NPM_TOKEN
           node release.mjs
@@ -30,10 +30,9 @@ jobs:
     steps:
       - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 30
-          persist-credentials: false
 
       - uses: FranzDiebold/github-env-vars-action@v2
 
@@ -52,4 +51,7 @@ jobs:
 
       - name: Release
         run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "Dev.me Team"
+          npm set //registry.npmjs.org/:_authToken $NPM_TOKEN
           node release.mjs
@@ -0,0 +1,303 @@
+# API Documentation
+
+## Table of Contents
+- [Core Functions](#core-functions)
+  - [geocoder](#geocoder)
+  - [carrier](#carrier)
+  - [timezones](#timezones)
+- [Cache Management](#cache-management)
+  - [clearCache](#clearcache)
+  - [getCacheSize](#getcachesize)
+  - [setCacheSize](#setcachesize)
+- [Type Definitions](#type-definitions)
+- [Locales](#locales)
+
+## Core Functions
+
+### geocoder
+
+Provides geographical information related to a phone number.
+
+```typescript
+geocoder(
+  phonenumber: PhoneNumber | undefined,
+  locale?: GeocoderLocale
+): string | null
+```
+
+#### Parameters
+- `phonenumber` - A parsed phone number object from `libphonenumber-js`
+- `locale` - Optional locale for localized location names (default: `'en'`)
+
+#### Returns
+- Location name as string if found
+- `null` if no location data available or invalid input
+
+#### Example
+```javascript
+import { geocoder, parsePhoneNumberFromString } from '@devmehq/phone-number-validator-js'
+
+const phoneNumber = parsePhoneNumberFromString('+41431234567')
+const locationEN = geocoder(phoneNumber) // "Zurich"
+const locationDE = geocoder(phoneNumber, 'de') // "Zürich"
+```
+
+---
+
+### carrier
+
+Maps a phone number to its original carrier.
+
+**Note:** This method returns the original carrier assigned to the number range, not the current carrier if the number has been ported.
+
+```typescript
+carrier(
+  phonenumber: PhoneNumber | undefined,
+  locale?: CarrierLocale
+): string | null
+```
+
+#### Parameters
+- `phonenumber` - A parsed phone number object from `libphonenumber-js`
+- `locale` - Optional locale for localized carrier names (default: `'en'`)
+
+#### Returns
+- Carrier name as string if found
+- `null` if no carrier data available (e.g., landline numbers) or invalid input
+
+#### Example
+```javascript
+import { carrier, parsePhoneNumberFromString } from '@devmehq/phone-number-validator-js'
+
+const phoneNumber = parsePhoneNumberFromString('+8619912345678')
+const carrierEN = carrier(phoneNumber) // "China Telecom"
+const carrierZH = carrier(phoneNumber, 'zh') // "中国电信"
+```
+
+---
+
+### timezones
+
+Provides all timezones associated with a phone number.
+
+```typescript
+timezones(
+  phonenumber: PhoneNumber | undefined
+): string[] | null
+```
+
+#### Parameters
+- `phonenumber` - A parsed phone number object from `libphonenumber-js`
+
+#### Returns
+- Array of timezone identifiers (e.g., `['America/New_York']`)
+- `null` if no timezone data available or invalid input
+
+#### Example
+```javascript
+import { timezones, parsePhoneNumberFromString } from '@devmehq/phone-number-validator-js'
+
+const phoneNumber = parsePhoneNumberFromString('+12124567890')
+const tzs = timezones(phoneNumber) // ['America/New_York']
+```
+
+## Cache Management
+
+The library uses an LRU (Least Recently Used) cache to optimize performance. The cache automatically evicts the least recently used entries when it reaches its size limit.
+
+### clearCache
+
+Clears all cached data. Useful for memory management in long-running processes.
+
+```typescript
+clearCache(): void
+```
+
+#### Example
+```javascript
+import { clearCache } from '@devmehq/phone-number-validator-js'
+
+// Clear all cached data
+clearCache()
+```
+
+---
+
+### getCacheSize
+
+Returns the current number of items in the cache.
+
+```typescript
+getCacheSize(): number
+```
+
+#### Returns
+- Number of cached entries
+
+#### Example
+```javascript
+import { getCacheSize } from '@devmehq/phone-number-validator-js'
+
+const size = getCacheSize()
+console.log(`Current cache size: ${size}`)
+```
+
+---
+
+### setCacheSize
+
+Sets the maximum cache size. When the cache reaches this limit, the least recently used entries are evicted.
+
+```typescript
+setCacheSize(size: number): void
+```
+
+#### Parameters
+- `size` - Maximum number of entries to cache
+
+#### Example
+```javascript
+import { setCacheSize } from '@devmehq/phone-number-validator-js'
+
+// Limit cache to 50 entries
+setCacheSize(50)
+
+// Increase cache for better performance (uses more memory)
+setCacheSize(200)
+
+// Reduce cache for lower memory usage
+setCacheSize(10)
+```
+
+## Type Definitions
+
+### PhoneNumber
+
+The `PhoneNumber` type is exported from `libphonenumber-js`. It represents a parsed phone number with various properties:
+
+```typescript
+interface PhoneNumber {
+  country?: string
+  countryCallingCode: string
+  nationalNumber: string
+  number: string
+  // ... other properties
+}
+```
+
+### GeocoderLocale
+
+Supported locales for geocoding:
+
+```typescript
+type GeocoderLocale = 'ar' | 'be' | 'bg' | 'bs' | 'de' | 'el' | 'en' | 
+  'es' | 'fa' | 'fi' | 'fr' | 'hr' | 'hu' | 'hy' | 'id' | 'it' | 'iw' | 
+  'ja' | 'ko' | 'nl' | 'pl' | 'pt' | 'ro' | 'ru' | 'sq' | 'sr' | 'sv' | 
+  'th' | 'tr' | 'uk' | 'vi' | 'zh' | 'zh_Hant'
+```
+
+### CarrierLocale
+
+Supported locales for carrier information:
+
+```typescript
+type CarrierLocale = 'ar' | 'be' | 'en' | 'fa' | 'ko' | 'ru' | 'uk' | 
+  'zh' | 'zh_Hant'
+```
+
+## Locales
+
+### Locale Fallback
+
+When a requested locale is not available for a specific phone number, the library automatically falls back to English (`'en'`).
+
+### Available Locales by Region
+
+#### Geocoding Locales
+- **Arabic** (`ar`): Middle East regions
+- **Chinese Simplified** (`zh`): Mainland China
+- **Chinese Traditional** (`zh_Hant`): Hong Kong, Taiwan
+- **English** (`en`): Default, worldwide coverage
+- **German** (`de`): Germany, Austria, Switzerland
+- **Spanish** (`es`): Spain, Latin America
+- **French** (`fr`): France, French-speaking regions
+- And many more...
+
+#### Carrier Locales
+- **Arabic** (`ar`): Middle East carriers
+- **Chinese** (`zh`): Chinese carriers
+- **English** (`en`): Default, worldwide carriers
+- **Korean** (`ko`): Korean carriers
+- **Russian** (`ru`): Russian carriers
+
+## Performance Considerations
+
+### Caching Strategy
+
+The library uses [tiny-lru](https://www.npmjs.com/package/tiny-lru) for optimal performance:
+
+1. **First Lookup**: Loads data from disk (slower, ~10-50ms)
+2. **Subsequent Lookups**: Retrieves from cache (<1ms)
+3. **Cache Eviction**: Automatic LRU eviction when limit reached
+
+### Memory Management
+
+For long-running applications:
+
+```javascript
+import { setCacheSize, clearCache, getCacheSize } from '@devmehq/phone-number-validator-js'
+
+// Option 1: Limit cache size
+setCacheSize(50) // Balance between performance and memory
+
+// Option 2: Periodic cache clearing
+setInterval(() => {
+  if (getCacheSize() > 80) {
+    clearCache()
+  }
+}, 3600000) // Check every hour
+
+// Option 3: Dynamic adjustment based on memory
+const checkMemory = () => {
+  const usage = process.memoryUsage()
+  if (usage.heapUsed > 100 * 1024 * 1024) { // 100MB
+    setCacheSize(10) // Reduce cache
+  } else {
+    setCacheSize(100) // Normal cache
+  }
+}
+```
+
+## Error Handling
+
+All functions handle invalid inputs gracefully:
+
+```javascript
+import { geocoder, carrier, timezones } from '@devmehq/phone-number-validator-js'
+
+// All return null for invalid inputs
+geocoder(undefined) // null
+geocoder(null) // null
+carrier(undefined) // null
+timezones(undefined) // null
+
+// Invalid phone numbers
+const invalid = parsePhoneNumberFromString('invalid')
+geocoder(invalid) // null
+```
+
+## Development vs Production
+
+In development mode (`NODE_ENV !== 'production'`), the library logs errors to help with debugging:
+
+```bash
+# Development mode - shows error logs
+yarn test
+
+# Production mode - suppresses error logs
+NODE_ENV=production yarn test
+```
+
+## Thread Safety
+
+The library is thread-safe for read operations. However, cache management operations (`setCacheSize`, `clearCache`) should be synchronized in multi-threaded environments.
@@ -1,5 +1,24 @@
 # Changelog
 
+## v1.4.0 (Unreleased)
+### Features
+- Add high-performance LRU caching using tiny-lru library
+- Add cache management API: `clearCache()`, `getCacheSize()`, `setCacheSize()`
+- Add comprehensive input validation and error handling
+- Improve TypeScript type safety with explicit return types
+
+### Improvements
+- Refactor code to eliminate duplication between geocoder and carrier functions
+- Optimize memory usage with configurable cache limits
+- Add 27 new comprehensive test cases
+- Enhance error logging in development mode
+- Performance improvements: <1ms lookups after initial cache
+
+### Documentation
+- Add comprehensive API documentation
+- Add performance and memory management guides
+- Update README with cache management examples
+
 ## v1.3.0
 - Update dependencies