backend.im/realtimechatapiwithmediasupport-t50lz6

Automated Action 545563e776 Implement comprehensive real-time chat API with NestJS

- 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.

2025-06-21 17:13:05 +00:00

2.1 KiB

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@lukeed/csprng

A tiny (~90B) isomorphic wrapper for crypto.randomBytes in Node.js and browsers.

Why?

This package allows you/dependents to import a cryptographically secure generator (CSPRNG) without worrying about (aka, checking the runtime environment for) the different crypto implementations. Instead, by extracting a random function into a third-party/external package, one can rely on bundlers and/or module resolution to load the correct implementation for the desired environment.

In other words, one can include the browser-specific implementation when bundling for the browser, completely ignoring the Node.js code – or vice versa.

By default, this module is set up to work with Rollup, webpack, and Node's native ESM and CommonJS path resolutions.

Install

$ npm install --save @lukeed/csprng

Usage

General Usage

// Rely on bundlers/environment detection
import { random } from '@lukeed/csprng';

const array = random(12);
// browser => Uint8Array(12) [...]
// Node.js => <Buffer ...>

Specific Environment

// Choose the "browser" implementation explicitly.
//=> ! NOTE ! Will break in Node.js environments!
import { random } from '@lukeed/csprng/browser';

const array = random(1024);
//=> Uint8Array(1024) [...]

// ---

// Choose the "node" implementation explicitly.
//=> ! NOTE ! Will break in browser environments!
import { random } from '@lukeed/csprng/node';

const array = random(1024);
//=> <Buffer ...>

API

random(length)

Returns: Buffer or Uint8Array

Returns a typed array of given length.

length

Type: Number

The desired length of your output TypedArray.

uid - A tiny (134B) and fast utility to randomize unique IDs of fixed length
@lukeed/uuid - A tiny (230B), fast, and cryptographically secure UUID (V4) generator for Node and the browser

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