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What is egg built with?

egg is a TypeScript repo built with koa-bodyparser, koa-compose, Express, and koa-range. It uses AI through LangChain, makes its content with js-yaml, escape-html, mustache, Nunjucks, and Cheerio, validates its data with Zod, Ajv, ajv-formats, ajv-keywords, and typebox, is tested with Vitest and Mocha, and uses Redis, MCP, and sqlstring. It has 199,875 written lines, with 2,957 test files.

Read on November 6, 2026, at commit 2d168f8. Read it as markdown

Backend

The base 1

Data 2

Services 1

AI 1

Support

Testing 2

  • Vitest587 files
  • Mocha1 file

Tools 7

  • glob2 files
  • type-fest2 files
  • benchmark1 file
  • js-beautify1 file
  • coffee15 files
  • globby5 files
  • tsconfig-paths1 file

Content 5

The base 3

  • koa-compose7 files
  • koa-bodyparser1 file
  • koa-range1 file

Validation 5

Other 42

  • Lodash5 files
  • moment3 files
  • dayjs2 files
  • @koa/cors1 file
  • chalk1 file
  • nanoid1 file
  • path-to-regexp6 files
  • detect-port5 files
  • content-type3 files
  • http-errors3 files
  • statuses3 files
  • superagent3 files
30 more
  • type-is3 files
  • accepts2 files
  • common-tags2 files
  • cron-parser2 files
  • methods2 files
  • on-finished2 files
  • pluralize2 files
  • raw-body2 files
  • body-parser1 file
  • bytes1 file
  • camelcase1 file
  • content-disposition1 file
  • cookie1 file
  • cookie-parser1 file
  • debounce1 file
  • encodeurl1 file
  • eventsource-parser1 file
  • fresh1 file
  • iconv-lite1 file
  • inflection1 file
  • ini1 file
  • matcher1 file
  • merge-descriptors1 file
  • mime-types1 file
  • parseurl1 file
  • reflect-metadata1 file
  • stack-trace1 file
  • terminal-link1 file
  • urijs1 file
  • vary1 file

Other repos with a similar stack

Ordered by how much of its stack they share with egg, then by stars.

Frequently asked questions

What language is egg written in?
egg is written in TypeScript, with 199,875 written lines.
What framework does egg use?
egg is built with koa-bodyparser, koa-compose, Express, and koa-range.
Does egg use AI?
Yes. egg uses AI through LangChain.
What services does egg use?
egg uses Redis, MCP, and sqlstring.

The proof: plugins/redis/src/lib/redis.ts, line 5

Does egg have tests?
Yes. egg has 2,957 test files and is tested with Vitest and Mocha.
Which repos have a stack like egg's?
The ones that share most of its stack:n8n-io/n8nfirecrawl/firecrawlgoogle-gemini/gemini-cli

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