545563e776
- Complete NestJS TypeScript implementation with WebSocket support - Direct messaging (DM) and group chat functionality - End-to-end encryption with AES encryption and key pairs - Media file support (images, videos, audio, documents) up to 100MB - Push notifications with Firebase Cloud Messaging integration - Mention alerts and real-time typing indicators - User authentication with JWT and Passport - SQLite database with TypeORM entities and relationships - Comprehensive API documentation with Swagger/OpenAPI - File upload handling with secure access control - Online/offline status tracking and presence management - Message editing, deletion, and reply functionality - Notification management with automatic cleanup - Health check endpoint for monitoring - CORS configuration for cross-origin requests - Environment-based configuration management - Structured for Flutter SDK integration Features implemented: ✅ Real-time messaging with Socket.IO ✅ User registration and authentication ✅ Direct messages and group chats ✅ Media file uploads and management ✅ End-to-end encryption ✅ Push notifications ✅ Mention alerts ✅ Typing indicators ✅ Message read receipts ✅ Online status tracking ✅ File access control ✅ Comprehensive API documentation Ready for Flutter SDK development and production deployment.
34 lines
807 B
JavaScript
34 lines
807 B
JavaScript
/** Returns a regular expression quantifier with an upper and lower limit. */
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export function limit(lower, upper)
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{
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if ((lower < 0) || (upper <= 0) || (upper < lower)) {
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throw new TypeError()
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}
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return `{${lower},${upper}}`
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}
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/**
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* Trims away any characters after the first match of {@code pattern} in {@code candidate},
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* returning the trimmed version.
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*/
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export function trimAfterFirstMatch(regexp, string)
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{
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const index = string.search(regexp)
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if (index >= 0) {
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return string.slice(0, index)
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}
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return string
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}
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export function startsWith(string, substring)
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{
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return string.indexOf(substring) === 0
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}
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export function endsWith(string, substring)
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{
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return string.indexOf(substring, string.length - substring.length) === string.length - substring.length
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}
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