Guides tagged “migration”
28 guides
Node.js 24 Migration Guide: ESM, Permission Model, and Test Runner Checklist
Compare Node.js 24 Migration ESM, Permission Model, and Test Runner by package risk, migration work, CI checks, maintainer tradeoffs, and ownership.
node-js · migration · esm
Biome Migration Guide from Prettier and ESLint
Compare Biome Migration from Prettier and ESLint for JavaScript teams, with package risk, migration steps, CI checks, and maintainer tradeoffs.
biome · migration · prettier
ESLint Flat Config Migration Guide for TypeScript Monorepos
Compare ESLint Flat Config Migration for TypeScript Monorepos by package risk, migration work, CI checks, maintainer tradeoffs, and ownership.
eslint · flat · config
Oxlint Migration Guide from ESLint for React Projects
Move React projects from ESLint-only linting to Oxlint safely: scope, rule parity, CI strategy, editor setup, and fallback plan.
oxlint · migration · eslint
Vite 7 Migration Guide for React and Vue Apps
Vite 7 migration checklist for React and Vue apps: plugin compatibility, test setup, SSR, CI, and how to avoid broken build pipelines.
vite · migration · react
Deno 3 Features and npm Compatibility Guide 2026
Deno 3 new features and npm compatibility explained for 2026. Covers workspace support, node_modules mode, performance gains, and how to migrate from Node.js.
deno · deno-3 · nodejs
React 20 New Features and Migration Guide 2026
React 20 new features explained with migration steps from React 19. Covers stable RSC, the use() hook, async components, performance gains, and breaking.
react · react-20 · migration
ESLint 10 Flat Config Migration Guide 2026
ESLint 10 (Feb 2026) removes legacy .eslintrc for good. Migrate to eslint.config.js in under an hour: steps, TypeScript setup, and Next.js compatibility fix.
eslint · eslint-10 · flat-config
ESM Migration Guide: CommonJS to ESM 2026
Complete guide to migrating Node.js packages from CommonJS to ESM in 2026: type:module, import.meta.url, dynamic import(), Node 22 require(ESM), and tools like.
esm · commonjs · node
TypeScript 6.0 Final: Breaking Changes 2026
TypeScript 6.0 shipped March 23, 2026 as the last JavaScript-based release before Go-native TS 7.0. Breaking changes and migration steps to upgrade from 5.x.
typescript · typescript-6 · migration
Next.js 16.2 New Features & Migration 2026
Next.js 16.2 ships ~87% faster dev startup, 25–60% faster RSC rendering, stable Adapters, and 200+ Turbopack fixes. Features and 16.1 → 16.2 migration guide.
nextjs · react · turbopack
Vercel AI SDK 5 Migration Guide 2026
Vercel AI SDK 5 shipped July 2025 with breaking changes to chat, streaming, and tool calling. Complete migration from v4 to v5 with code examples for Next.js.
ai-sdk · vercel · nextjs
Vite vs Rspack vs Webpack Bundler 2026
Vite, Rspack, and webpack compared on speed, compatibility, and migration cost in 2026. Which bundler to use for new projects and legacy migrations this year.
vite · rspack · webpack
Migrating Webpack to Vite 2026: Large App Guide
Step-by-step guide to migrating large Webpack codebases to Vite in 2026. Covers Module Federation, custom loaders, monorepos, and the most common blockers with.
vite · webpack · migration
@aws-sdk v3 vs v2 Migration Guide 2026
Complete guide to migrating from AWS SDK v2 to v3 in 2026. Modular clients, middleware stack, tree-shaking, TypeScript improvements, and bundle size impact.
aws · typescript · nodejs
Rspack vs Webpack: Drop-In Replacement Performance 2026
Rspack 1.x reached stable and claims 5-10x faster builds than Webpack with near-identical config. Real benchmarks, migration effort, and whether it's time to.
rspack · webpack · bundlers
The 20 npm Packages Losing Downloads the Fastest 2026
Which npm packages are in decline in 2026? Download trend data on the fastest-losing packages — abandoned tools, deprecated libraries, and what to use instead.
npm · trends · javascript
How to Migrate from Create React App to Vite 2026
The definitive CRA to Vite migration guide for 2026. Every step, every gotcha, and how to handle the edge cases that trip up most migrations for 2026.
vite · create-react-app · migration
How to Migrate from Enzyme to Testing Library 2026
Step-by-step guide to migrating React tests from Enzyme to Testing Library. Query mapping, event handling, async patterns, and the philosophy shift explained.
testing-library · enzyme · testing
How to Migrate from ESLint to Biome 2026
Step-by-step ESLint to Biome migration guide. Config conversion, rule mapping, CI setup, and handling the 95% of ESLint rules that Biome covers — plus what.
biome · eslint · linting
How to Migrate from Express to Fastify 2026
Step-by-step guide to migrating your Express API to Fastify. Route syntax, middleware mapping, plugin system, TypeScript types, and performance gains.
fastify · express · migration
How to Migrate from Jest to Vitest in 2026
Step-by-step guide to migrating your Jest test suite to Vitest in 2026. Config changes, API differences, and the gotchas that trip up most migrations.
vitest · jest · testing
How to Migrate from Moment.js to date-fns 2026
Step-by-step Moment.js to date-fns migration guide. API mapping, gotchas, and the key mental model shift from chained methods to pure functions for 2026.
date-fns · momentjs · migration
How to Migrate from Mongoose to Prisma 2026
Step-by-step guide to migrating your Mongoose MongoDB models to Prisma with PostgreSQL or MongoDB. Schema conversion, query translation, and handling the.
prisma · mongoose · migration
How to Migrate from Redux to Zustand 2026
Step-by-step guide to migrating your Redux app to Zustand. Store conversion, selector migration, middleware replacement, and incremental migration strategies.
zustand · redux · state-management
Migrate from Webpack to Vite: A Step-by-Step Guide 2026
Migrate your Webpack project to Vite in 2026. Config mapping, plugin equivalents, handling edge cases, and the common gotchas that delay migrations now.
vite · webpack · migration
Rspack vs Webpack: Speed Benchmarks 2026
Rspack 1.0 is 23x faster than webpack in benchmarks. Real-world migration from Mews (80% faster), ByteDance, and Discord show how the drop-in replacement works.
rspack · webpack · bundlers
Tailwind CSS v4: What's New and How to Migrate 2026
Tailwind CSS v4 rewrites the engine in Rust via Lightning CSS, drops the config file, and cuts rebuild times by 5x. What changed and how to migrate in 2026.
tailwind · css · frontend
