Testing AI Agents with Vitest 4 — Mocking LLM Calls and Streaming Responses in Practice
At some point when writing AI agent code, testing comes to a halt. Without an ANTHROPIC_API_KEY , the code won't even run. With one, every test run co…
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The Unexpected optimization in ESLint vs Vitest: A Head-to-Head
In a 2024 benchmark of 10,000+ line TypeScript codebases, Vitest outperformed ESLint ’s native rule execution by 47% in cold-start lint speed when con…