Never Miss a Switch Case Again
Learn how to make TypeScript catch missing switch cases at compile time using the exhaustive switch pattern with the never type.
TypeScript Blog
Discover the latest TypeScript posts, packed with hands-on examples you can try in your own application. Explore the blog and snag your favorite code nuggets.
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Why You Should Use Locators Instead of Text in Your Tests
Learn why using semantic locators like data attributes and ARIA roles makes your tests more robust than text-based selectors. Discover best practices for writing frontend tests in TypeScript with Playwright.
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Stop Using TypeScript's Exclamation Mark
The non-null assertion operator (!) tells TypeScript to trust you when you say a value isn't null or undefined. But this trust comes at a cost: runtime crashes that TypeScript could have prevented. Learn why this operator undermines type safety and what to use instead.
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How to Fix ESLint parserOptions.project Error
Running ESLint on your TypeScript config files can trigger a confusing parser error. Learn how to quickly fix the "file was not found in any of the provided project(s)" error by updating your TypeScript project configuration.
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Enabling Network Access for Codex Extension in VS Code
OpenAI's Codex extension for VS Code runs in a sandbox without internet access by default. Learn how to enable network access for Codex on Windows with WSL to unlock full agent capabilities for your TypeScript projects.