Posts

TypeScript's using keyword and explicit resource management eliminate the most common source of production memory leaks. Learn the patterns that matter.

A detailed account of migrating 200,000 lines from TypeScript 5.x to 6.0, covering the three breaking changes that generated thousands of errors, the migration strategy that failed first, and the tooling that ultimately saved the project.

Most async generator type errors stem from TypeScript's inability to infer yield types. This post reveals the three-parameter type system that eliminates inference failures in production code.

Stage 3 decorators bring runtime metadata, validation, and dependency injection patterns to production TypeScript. The performance trade-offs matter more than the syntax sugar.

Node.js 24 stabilizes require(esm), eliminating transpilation for most codebases. See what to delete from your build pipeline, when you still need transpilation, and how to migrate production systems safely.

The TC39 Type Annotations proposal promised to bring native type syntax to JavaScript. Four years after stalling at Stage 1, here's what actually happened and what developers should do instead.

Most generic type bugs stem from variance issues that strict mode doesn't catch. TypeScript's new 'in' and 'out' annotations finally give developers explicit control over covariance and contravariance in generic parameters.

TypeScript 5.7's stricter --module nodenext enforcement breaks three critical patterns in Express apps. Here's what changed and how to migrate without rewriting your entire codebase.

The erasableSyntaxOnly compiler flag changes how teams write TypeScript for native Node.js execution. Learn which features it disables, why that matters for build pipelines, and how to migrate production code without breaking changes.

Most RSC adoption failures stem from misunderstanding the server/client boundary. This post covers production-ready patterns, common serialization pitfalls, and the decision framework for when server components actually solve your problem.

React 19.2's Activity component preserves unmounted component state without CSS hacks. Learn when to use it for forms, video players, and dashboards—and when display:none still wins.

Master React 19's concurrent rendering primitives—Actions, useTransition, and Suspense—to build responsive UIs that handle async operations without jank or loading spinners.