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Rewrites on React, Node.js, TypeScript and AI. A translated body is shown when it exists. If it does not, you see the English text and a note that says so.
Tagged: Jest
Practical notes: Node’s Native Test Runner vs Jest vs Vitest: One Suite, Three
Operable walkthrough of Practical notes: Node’s Native Test Runner vs Jest vs Vitest: One Suite, Three: contracts, checks, and drop-in code slots for teams shipping this pattern.
9 min readJavaScript unit testing with Jest and Vitest: practices that stick
JavaScript unit testing that sticks: what belongs at the unit layer, Vitest vs Jest vs Mocha, arrange-act-assert, mocks, edge cases, CI, and where AI helps.
7 min readShortening 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.
4 min readA Production-Ready React Baseline: What Every Package Actually Does
Vite, Tailwind CSS v4, Redux Toolkit, React Router, Jest and Prettier in one React baseline, with the reason each package and every config line is in there.
14 min readReplacing Jest with Node's Native Test Runner in Node 24
Moving from Jest to the Node.js 24 built-in test runner with native TypeScript support cut CI time and dropped four dependencies. What changed and why.
9 min read
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