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Web3.js v4 cuts bundle size by 80% and adds first-class TypeScript, but three silent breaking changes — missing @web3js/contract, BigInt block numbers, and removed batch requests — cause runtime failures TypeScript won't catch. The migration checklist that prevents production bugs.
Dart's sound null safety makes types non‑nullable by default, catching null‑dereference bugs at compile time. Shows enabling in pubspec.yaml, non‑nullable and late variables, dart migrate usage, and pitfalls like unsafe ! and late init errors.
Sound null safety eliminates silent null dereferences in Dart. This guide walks you through preparing, running the migration tool, handling third‑party packages, a concrete code example, and trade‑offs so you can modernise your Flutter or server‑side Dart code safely.
Migrating a Dart codebase to null safety: step‑by‑step guidance, common pitfalls, and best practices. Learn how to use <code>dart migrate</code>, resolve manual edits, and keep tests green.
Learn how to replace Sass @import with the module system (@use/@forward) to avoid duplicate CSS, global namespace pollution, and name collisions, with a concrete migration example and verification steps.
Migrate a legacy Redux codebase (createStore, action constants, switch reducers) to Redux Toolkit incrementally — one slice at a time — without changing your state shape or breaking existing tests.
Learn how Dart’s sound null safety moves null‑related bugs from runtime to compile time, with a concrete JSON‑parsing example, migration steps, and practical trade‑offs.
A concise architecture‑level guide for adopting Dart sound null safety, covering requirements, minimal design, data boundaries, CI checks, failure modes, and triggers for redesign.
A hands-on guide to migrating a legacy Dart module to null safety: run the automated tool, resolve the remaining warnings, refactor a real service method, and verify the result—without a full rewrite.
web3js
flutter
sass
redux