From the OpenReplay Blog
Should You Upgrade to TypeScript 7 Yet?
Should you upgrade to TypeScript 7? Compare its compiler speed, breaking changes and tool compatibility, then choose a safe migration path for your project.
Finding the ESLint Rules That Slow Down Your Linting
Find slow ESLint rules with TIMING=1 and Config Inspector. Compare type-aware rules, identify costly plugins, and tune your config to speed up linting.
ArkType, a Faster Alternative to Zod
Compare ArkType and Zod syntax, type inference, validation speed, and API response handling. See when ArkType fits and when to keep Zod.
Adding Captions to a Video With AI in the Browser
Generate video captions in the browser with Transformers.js and Whisper. Extract audio, use WebGPU or WASM, create WebVTT subtitles, and keep media on-device.
What Goes in a WordPress theme.json File
See what belongs in a WordPress theme.json file, how settings and styles generate CSS variables, and how presets, custom CSS, and child themes work.
How to Handle 3D Secure in a Single-Page App
Handle 3D Secure in a single-page app with Stripe: preserve checkout state, rebuild the return route, verify PaymentIntent status server-side, and test each flow.
How to Fix Extra Space Above and Below Text in CSS
Fix extra space above and below text with CSS text-box-trim. See how font metrics and line-height create gaps, choose text-box-edge values, and add browser fallbacks.
How to Cut Token Usage in AI Coding Agents
Cut token usage in AI coding agents by narrowing file access, writing concise project instructions, planning before coding, searching manually, and clearing sessions.
Waku: React Server Components Without Next.js
Explore Waku, a lightweight React framework for React Server Components without Next.js. Build a sample app and see how routing, rendering modes, and deployment work.
Using git bisect to Track Down a Bad Commit
Use git bisect to pinpoint the commit behind a regression. Set reliable good and bad refs, automate tests, handle flaky results and skips, and verify the culprit.
Reading and Writing ZIP Files in Node Without a Library
Read and write ZIP files in Node.js 26.8.0 with the experimental node:zlib API. See streaming examples, zip-slip safeguards, size limits, and older Node alternatives.
Inside pnpm's Rust Rewrite
Explore pnpm 12’s Rust rewrite, benchmark results, compatibility with pnpm 11, and upgrade risks, including CI changes that may break installs.
Staggered Animations Without nth-child Maths
Replace nth-child ladders and JavaScript loops with sibling-index() for CSS staggered animations. See reverse and centre-out delays, layout uses, browser support and fallbacks.
5 AI Tools for Building Mobile Apps
Compare five AI mobile app builders: Dactyl, Rork, FlutterFlow, Thunkable and Bubble. See what they export, platform support, store publishing and pricing.
Can You Still Trust the User Agent String?
See which user agent string fields remain reliable, what browsers freeze, and how Chromium User-Agent Client Hints and feature detection can replace fragile parsing.
Securing Docker on a Linux Machine
Docker group access grants root-level control. See how to secure Docker on Linux with rootless mode, sudo rules, Podman, container hardening, and an audit checklist.
Making Zod Validation Faster With Compiled Schemas
See how Zod compiled schemas speed up validation, where gains matter, and how to handle compile costs, unsupported schemas, CSP restrictions, and Cloudflare Workers.
Why Your useEffect Runs Twice
See why React StrictMode makes useEffect run twice in development and how to fix fetches, listeners, and other effects with proper cleanup.
HTTP Has a New Verb for Search
Explore HTTP QUERY, a safe, idempotent method for body-based search. See how caching and retries work, which clients support it, and where infrastructure blocks it.
How to Build a Custom Gutenberg Block
Build a custom Gutenberg block with React, block.json, and PHP. See how attributes, static and dynamic rendering, and deprecated saves prevent validation errors.
How to Verify a Webhook Signature
Verify Stripe and GitHub webhook signatures in Express with raw request bodies, constant-time HMAC checks, replay protection, and support for secret rotation.
5 Linux Distros You Might Not Have Heard Of
Compare five lesser-known Linux distros for developers: CachyOS, Bazzite, Nobara, Vanilla OS and Chimera Linux, with insights on drivers, updates and toolchains.
What Changed in Vitest 5
See what changed in Vitest 5, including performance gains, breaking changes, new defaults, reporter paths, and a practical checklist for upgrading your tests and CI.
How to Use Native CSS Mixins Instead of Sass
See how to port Sass mixins to native CSS with @mixin and @apply, handle parameters, and identify features that still require Sass and unsupported browser support.