Feature

• Support TypeScript by default
  • feat: support cjs and esm both koa#5
  • @eggjs/core feat: support cjs and esm both core#265
  • feat: support @eggjs/core next version utils#21
  • @eggjs/router feat: support cjs and esm both router#10
  • feat: refactor with typescript to support cjs ane esm both #5328
  • refactor egg with ts feat: refactor with typescript to support cjs ane esm both #5328
  • refactor tegg plugin to support egg v4
  • use tegg by default
  • feat: support cjs and esm both by tshy schedule#62
  • better config define for TypeScript, e.g.: https://github.com/toeverything/AFFiNE/blob/canary/packages/backend/server/src/core/doc/config.ts#L55
• Support cjs and esm both 使用 tshy 来默认支持 cjs 和 esm #5257
• Support Node >= 18.19.0 (diagnostics_channel.subscribe required)

  https://nodejs.org/api/esm.html#importmetaresolvespecifier import.meta.resolve required >= 18.19.0

• Only support Windows >= 10
• urllib@4 and undici@6 feat: use undici v6 node-modules/urllib#514
• Better Single Process In Docker
• Async Config Support
  • feat: support file returning async functions when loading it core#272
• Use zod to parse Config and enable snapshot testing on config unittest
  • e.g.: security plugin feat: support cjs and esm both by tshy security#101
• CLI Plugin System
• Release Egg Cloud
  • Support Cloudflare Workers https://developers.cloudflare.com/workers/
• esm support
  • tsconfig-paths not support esm, need to use tsx on esm project
• 常用插件默认支持 tegg module 模式，让 tegg standalone 可以运行，参考 @eggjs/tegg-dal-plugin 和 @eggjs/tegg-ajv-plugin 的实现，同时兼容 egg plugin 和 tegg module。
• 根据 https://node-modules.dev/grid#install=egg@4 改造剩余的 模块
• support vitest
  • Normal egg application and plugin
  • tegg modules

Breaking changes

Node.js

• Drop generator function support
• Drop Node.js < 20.x support, need to support CommonJS require ESM feature
• Drop Node.js <= 22.18 support, need to execute TypeScript be default
• ESMOnly

HttpClient

• Remove DNSCacheHttpClient
• Remove HttpClientNext
• upgrade urllib to v4

Logger

• set config.logger.enablePerformanceTimer = true by default
• set config.logger.enableFastContextLogger = true by default

egg-bin

• remove mochawesome reporter by default refactor(bin): remove mochawesome reporter #5575

tegg

• @Context() => @HTTPContext()
• @Request() => @HTTPRequest()
• @Headers() => @HTTPHeaders()
• @Cookies() => @HTTPCookies()

Other

• Drop legacy feature.
• New Docs Site.
• Auto release by https://github.com/node-modules/github-actions
• https://github.com/xiekw2010/egg-typebox-validate support egg v4 feat: support egg >= 4.0 eggjs-community/egg-typebox-validate#3
• Replace co-busboy https://github.com/cojs/busboy
• 升级帮助文档 https://www.yuque.com/egg/doc/v3-to-v4
• DAL 支持 sql tpl tag https://github.com/blakeembrey/sql-template-tag

Release

• Maybe October, 2019
• 2022年8月8日发布全新的框架内核 Artus，发音「阿图斯」 内核还是 egg-core，不会改动。
• egg 4.0：正在 ts 重构中，预计 2025年上半年11月22日发布