jsmanifest
Modern web development insights. React, TypeScript, and beyond.
Recent Posts
View all →
TypeScript `asserts` and Type Predicates in 2026: Writing Guards That Actually Narrow Correctly
July 31, 2026
Most TypeScript runtime validation fails because developers misunderstand when to use type predicates versus assertion functions. Learn the patterns that actually narrow types correctly in production codebases.
TypeScript readonly Arrays and Tuples: When Immutability Saves You and When It Fights You
July 30, 2026
Most readonly bugs stem from shallow enforcement and type widening. Learn when TypeScript's readonly protects your arrays and tuples—and when it silently fails.
TypeScript 6.0 Project References at Scale: Incremental Builds, Composite Projects, and What Teams Get Wrong
July 29, 2026
Most monorepo build failures stem from misunderstood project references. Learn how composite projects, incremental builds, and tsc -b actually work—and the subtle configuration mistakes that destroy build performance at scale.
Stay Updated
Get the latest articles and updates delivered straight to your inbox.