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Original rewrites on React, Node.js, TypeScript and AI — practical notes from the same engineering practice behind our operator software. Article bodies are in English.
Tagged: vitest
React component tests with Vitest and Testing Library
Wire Vitest into Vite, colocate behavior tests, run watch vs CI, and brief an AI agent to follow a red-green verify loop.
773 wordsRead articleJavaScript unit testing with Jest and Vitest: practices that stick
Fast isolated tests, what belongs on the unit layer, Vitest vs Jest vs Mocha, AAA, mocks, edge cases, CI, and where AI helps.
1573 wordsRead articleShortening Jest Runs Locally and in CI: Workers, Caching and Scope
A practical checklist for faster Jest suites: measuring first, tuning workers, trimming global setup, reusing the cache, isolatedModules, and running only affected tests.
956 wordsRead articleReplacing Jest with Node's Native Test Runner in Node 24
A real-world migration shows how Node 24's built-in test runner and native TypeScript support cut CI time while removing four dependencies.
1852 wordsRead article
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