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.
26 lines
608 B
JavaScript
26 lines
608 B
JavaScript
/**
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* Checks `value` to determine whether a default value should be returned in
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* its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
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* or `undefined`.
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*
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* @static
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* @memberOf _
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* @since 4.14.0
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* @category Util
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* @param {*} value The value to check.
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* @param {*} defaultValue The default value.
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* @returns {*} Returns the resolved value.
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* @example
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*
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* _.defaultTo(1, 10);
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* // => 1
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*
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* _.defaultTo(undefined, 10);
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* // => 10
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*/
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function defaultTo(value, defaultValue) {
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return (value == null || value !== value) ? defaultValue : value;
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}
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module.exports = defaultTo;
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