Step-by-step guides with working code. Ship something by the end.
Three JavaScript patterns CSS :has() now handles natively in 2026 — toggle, form validation, card hover — with before/after code and one case where it loses.
Three testing patterns that catch the bugs AI ships: hallucinated APIs, broken business rules, and UI that renders wrong. With code examples.
CSS nesting replaces Sass for 80% of use cases. 3 production patterns, 2 dealbreakers, and a migration checklist for dropping your preprocessor.
CSS anchor positioning replaces Floating UI for tooltips and dropdowns with 3 CSS properties. Migration guide with real before/after code.
Three CSS view transition patterns ship in production. Two don't. Real performance data, fallback strategies, and the line between demo and shipping code.
3 frontend tests worth writing with Vitest and Playwright, 4 to delete. A practical decision framework, not another tool comparison.
SSE or WebSocket? Three questions decide. A decision framework, side-by-side code, and the hybrid pattern — from a dev who shipped both.
3 patterns where CSS container queries beat media queries, a concrete migration path, and when media queries are still correct. Practical and opinionated.
REST API error handling best practices: build structured errors with RFC 9457, implemented in Express and Go — plus client-side consumption code.
AI assisted refactoring that won't break production. Three named patterns, a preflight checklist, and the trust-but-verify mindset that keeps code safe.