Awesome GitHub RepositoriesECMAScript Module Support

ts-jest is a TypeScript compilation tool and transformer that enables the Jest testing framework to execute tests written in TypeScript. It functions as a bridge that transpiles typed source code into executable JavaScript while maintaining the necessary integration for test runner execution. The project distinguishes itself by providing on-the-fly type diagnostics and pre-test type validation to identify structural errors before the execution phase. It includes a source map handler that links compiled JavaScript output back to the original TypeScript source lines to ensure accurate error sta

Node.js is an open-source, cross-platform JavaScript runtime environment built on the V8 engine, designed for executing JavaScript code outside a web browser. It operates as a server-side JavaScript platform with an event-driven, non-blocking I/O architecture that enables building scalable network applications and web servers. The runtime integrates the CommonJS module system for synchronous module loading and the npm ecosystem for sharing and reusing packages. The platform provides comprehensive capabilities for web server development, including creating HTTP and HTTPS servers, managing HTTP

esm is an ECMAScript module loader and JavaScript module path resolver. It functions as a runtime system that executes standard JavaScript modules without requiring a separate build or bundling process. The project provides a compatibility bridge for CommonJS interoperability, wrapping CommonJS exports into synthetic modules to allow imports and exports between different module systems. It includes a dynamic module cache that stores resolved instances in memory to prevent redundant file system reads and repeated execution. The system handles runtime path resolution and file extension detecti

koa2-note 是一个专注于 Koa2 Web 服务器开发和 Node.js 异步编程的项目。它提供了一个使用异步中间件管道处理请求和响应周期的 Web 服务器和 API 构建框架。 该项目强调分层后端架构，将路由、业务服务和数据模型解耦。其特色在于集成了用于持久化用户会话和应用数据的关系型数据库，以及包含用于前端资源 JSX 转 JavaScript 编译的构建过程。 功能范围涵盖后端 API 设计（包括 RESTful 路由和请求数据解析）以及使用模板引擎的服务器端渲染。它还包括对使用多部分流解析的异步文件上传、基于 Cookie 的会话管理以及用于跨域请求的 JSONP 实现的支持。 该仓库作为一个教育资源，提供了学习 Koa 框架实现和服务器架构的结构化教程和示例。

QuickJS is a lightweight, embeddable ECMAScript runtime that executes JavaScript programs conforming to the latest specification. It is designed as a compact, standards-compliant JavaScript engine suitable for resource-constrained environments and embedded systems, available both as prebuilt binaries and as source code that can be compiled for custom integration. The engine distinguishes itself through a minimal runtime footprint achieved by a single-pass compiler that produces compact bytecode, executed on a stack-based virtual machine. Memory management uses reference-counting garbage colle