ECC/docker/context-profiles/complex-eval/reference4/chained-tickets

shortlink

Internal link shortener service. Node.js standard library only, CommonJS.

• API.md — the HTTP contract.
• CONTRIBUTING.md — engineering conventions. Every ticket follows them.
• src/app.js exports createApp() returning an http.Server that is not yet listening; node src/index.js <port> starts the service.
• Links persist to the JSON file named by the DATA_FILE environment variable (default ./data/links.json).
• GET /links/<code>/stats returns { "code", "hits", "expiresAt" } — hits counts redirects.
• The API is rate limited per client and validates URLs (http/https only).
• Run the tests with npm test.