Posts

TypeScript 6.0 marks the final JavaScript-based release with strict defaults, ES5 removal, and breaking tsconfig changes. Here's what breaks and how to fix it.

TypeScript 6.0's isolatedDeclarations replaces the type checker bottleneck in .d.ts generation, enabling parallel builds and sub-second declaration emit in monorepos.

Most type safety failures in TypeScript stem from treating all strings as interchangeable. Branded types prevent these errors at compile time without runtime overhead.

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.

Five advanced patterns that unlock the full power of TypeScript's satisfies operator—from type-safe configs to branded types that bridge runtime validation.

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.