From the OpenReplay Blog
Best Practices for Securing OAuth in Web Applications
Secure OAuth 2.0 implementations using PKCE, refresh token rotation, DPoP, and the BFF pattern to protect SPAs from token theft and deprecated flows.
A Practical Introduction to Dyad, the Local AI App Builder
Build local AI apps with Dyad using natural language prompts, Neon Postgres, and flexible model support including GPT-4, Claude, and Ollama.
5 Awesome Developer Resources You Should Bookmark
Five developer resources worth bookmarking: Gemini Code Assist, Cline, Kilo Code, Exercism, and RegExr solve AI coding, regex debugging, and skill gaps.
How JavaScript Promises Work with the Event Loop
JavaScript Promises use the microtask queue to execute before setTimeout, giving you predictable async code once you grasp how the event loop prioritizes tasks.
Implementing Push Notifications with the Web Push API
Build push notifications with Service Workers, VAPID keys, and encryption. This implementation covers subscription management and browser-specific requirements.
Getting Started with GitHub Copilot Extensions
Install GitHub Copilot Extensions, build a Hello World agent with Node.js, and choose between VS Code extensions and MCP servers for future development.
Why Developers Are Talking About DuckDB
DuckDB enables fast embedded analytics without server setup. Readers will see how it queries Parquet files, integrates with Pandas, and compares to PostgreSQL.
Zero-Config Hono Deployments on Vercel
Deploy Hono on Vercel with zero config, reduce cold starts using Fluid Compute, and separate Hono middleware from Vercel routing middleware.
Getting Started with Kibo UI and shadcn/ui Components
Add Kibo UI components to a shadcn/ui React project and build accessible, composable interfaces including data tables, file uploaders, and AI chat features.
Fix 'npm ERR! ERESOLVE unable to resolve dependency tree'
Fix the npm ERR ERESOLVE unable to resolve dependency tree error by aligning package versions, using legacy peer deps flags, or running clean installs.
5 Tips to Prepare for an AI/ML Interview in 2025
Prepare for AI and ML interviews by practicing LeetCode patterns, building RAG systems, and mastering MLOps, LLM inference, and system design skills.
5 TypeScript Utility Types You Should Know
Five TypeScript utility types, Partial, Required, Pick, Omit, and Readonly, let you transform types and reduce interface duplication in your code.
Debugging Like a Pro with VS Code's Built-In Tools
Stop guessing and start pausing execution with VS Code breakpoints, logpoints, and Auto Attach to inspect JavaScript, React, and Node.js state directly.
Do You Still Need a Sitemap in 2025?
Decide whether XML sitemaps, sitemap indexes, or no sitemap at all suits your site based on page count, JavaScript rendering needs, and internal linking.
Generating Realistic Test Data with Faker.js
Generate realistic test data using Faker.js for database seeding, mock APIs, and form testing with localization support and reproducible seed values.
Modern Font Loading Strategies for Web Performance
Optimize web fonts using WOFF2, font-display, subsetting, preloading, and variable fonts to reduce layout shifts and improve Core Web Vitals.
How to Create Accessible Forms Using ShadCN UI
Build accessible forms using ShadCN UI, React Hook Form, and Zod validation to automate ARIA attributes, error announcements, and keyboard navigation support.
WebSockets vs. SSE vs. Long Polling: Which Should You Use?
Compare WebSockets, SSE, and Long Polling to select the best real-time data transfer method for chat apps, dashboards, and live notifications.
Getting Started with TanStack DB for Reactive UIs
TanStack DB adds collections and live queries to TanStack Query, enabling differential dataflow for fast reactive UIs with minimal boilerplate.
Non-Mutating Arrays: Writing Safer JavaScript Code
Write safer JavaScript by using non-mutating array methods like map, filter, reduce, slice, and concat to prevent side effects and bugs in React applications.
Modern CSS Background Effects Without Images
Create pure CSS backgrounds using gradients, stripe patterns, and reusable textures that eliminate image HTTP requests and improve Core Web Vitals scores.
Styling Text with the CSS Custom Highlight API
Style text ranges with the CSS Custom Highlight API without DOM wrapper elements, boosting performance in search interfaces, text editors, and annotation tools.
Lightweight Internationalization: Replace Libraries with the Intl API
Replace Moment.js, date-fns, and numeral.js with the native JavaScript Intl API to cut bundle size and handle date, currency, and number formatting for free.
Practical Frontend Tips for Better Core Web Vitals Scores
Boost LCP, INP, and CLS scores using fetchpriority, scheduler.yield, and image dimension techniques that keep the main thread responsive and layouts stable.