Code splitting in Webpack: route-based, component-based, and where it stops helping
Dynamic imports, magic comments, and the exact split points that measurably improved a real app's Time to Interactive - plus…
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Appesto Engineering
Appesto Engineering
Practical articles, technical guides, tutorials, development notes, research, and insights covering software engineering and emerging technologies.
‘Objects are not valid as a React child’: what it means and 6 ways it happens
React can render strings and numbers - not objects. This error fires the moment JSX receives one, and the culprit…
2 min read
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‘Invalid hook call’ in React: every cause and how to fix each one
Hooks can only be called inside a function component - but you knew that and you're still getting the error.…
2 min read
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How to fix the React useEffect infinite loop (and ‘Too many re-renders’)
The #1 React question on Stack Overflow, solved properly: why useEffect loops forever, what 'Too many re-renders' actually means, and…
3 min read
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Accessibility in React that actually ships: a WCAG 2.2 field guide
Automated tools catch 30% of issues. The other 70% need keyboard testing, screen reader runs, and deliberate ARIA patterns. Here's…
2 min read
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Webpack vs Vite in 2026: when Webpack is still the right call
Vite won the greenfield-app conversation years ago. Here's the honest case for the projects where migrating off Webpack would cost…
3 min read
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Next.js vs TanStack Start in 2026: an honest comparison from a team that uses both
Next.js 15 optimises for RSC-first and Vercel. TanStack Start 1.x optimises for end-to-end type safety and deployment freedom. Here's the…
3 min read
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A production-grade GitHub Actions CI pipeline for TypeScript projects
Type-check, lint, test, and deploy in the right order with caching that actually works. The workflow file we use across…
2 min read
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React Hook Form + Zod: the form pattern that’s become a team standard
Uncontrolled inputs, schema-defined validation, TypeScript types inferred from the schema. Here's the full setup, cross-field validation, async checks, and multi-step…
2 min read
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Finding and killing bundle bloat with webpack-bundle-analyzer
A practical guide to reading the treemap, the four bloat patterns we find in almost every audit, and the exact…
2 min read
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