Mar 3 · 6 min read · Testing Frameworks Compared: Jest, Vitest, Bun Test, and Playwright Choosing a test framework used to be simple: you picked Jest. Now there are genuinely good alternatives, each with different strengths. This guide compares the main options, covers d...
Join discussionMar 3 · 8 min read · If you're already using Bun as your runtime or package manager, you might not realize it ships with a full-featured test runner built in. No extra dependencies, no configuration files, no transpilation step. Just bun test and your TypeScript tests ru...
Join discussionFeb 12 · 9 min read · Metadata Block SEO Title: Jest Testing: Unit Test Complete Guide for 2025 Meta Description: Master Jest unit testing with modern TypeScript patterns, async testing strategies, and production-grade examples for scalable JavaScript applications. Primar...
Join discussionJan 4 · 32 min read · Table of Contents Why Testing Matters Jest Basics Setup & Configuration Writing Your First Test React Testing Library Essentials Real-World Testing Scenarios Mocking in Depth Common Mistakes & Best Practices Interview Questions Testing File...
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Jan 4 · 11 min read · Previously: Solved the hybrid persistence architecture. Dexie for client, Prisma for server, sync between them. Now: Time to build the generation infrastructure and make this production-ready. The Test-First Pivot After two architectural crises (Copi...
Join discussionDec 30, 2025 · 5 min read · When a React project grows, components stop living alone. They share data through props, context, routing, and API calls. That’s exactly when we start seeing those “works on my machine” bugs after deployment. The problem is usually not a single compo...
Join discussionDec 27, 2025 · 13 min read · So you’re using Claude Code to generate tests and it’s creating 45 test files that check if setTimeout works. Yeah, that’s not what we want. And that’s in the best-case scenario. In the worst case? The tests don’t even run. Claude might use Jasmine i...
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Dec 4, 2025 · 21 min read · Why I Chose Vitest Over Jest: 10x Faster Tests & Native ESM Support Ever waited 20 seconds for your tests to run, only to realize you made a typo? Yeah, me too. That's why I ditched Jest. After migrating my React component library to Vitest, my tests...
Join discussionOct 10, 2025 · 13 min read · Whether for frontend or backend, testing is a key aspect of building trustworthy JavaScript applications. For example, when writing code that relies on external modules or services such as APIs, databases, or configuration providers, mocking can allo...
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