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
887 B
Markdown
34 lines
887 B
Markdown
# wcwidth
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Determine columns needed for a fixed-size wide-character string
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----
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wcwidth is a simple JavaScript port of [wcwidth](http://man7.org/linux/man-pages/man3/wcswidth.3.html) implemented in C by Markus Kuhn.
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JavaScript port [originally](https://github.com/mycoboco/wcwidth.js) written by Woong Jun <woong.jun@gmail.com> (http://code.woong.org/)
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## Example
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```js
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'한'.length // => 1
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wcwidth('한'); // => 2
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'한글'.length // => 2
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wcwidth('한글'); // => 4
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```
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`wcwidth()` and its string version, `wcswidth()` are defined by IEEE Std
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1002.1-2001, a.k.a. POSIX.1-2001, and return the number of columns used
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to represent the given wide character and string.
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Markus's implementation assumes the wide character given to those
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functions to be encoded in ISO 10646, which is almost true for
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JavaScript's characters.
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[Further explaination here](docs)
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## License
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MIT
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