Reactive Flows, AI Agents, and State Events: This Week’s Angular Masterclass! ⚡ The Angular ecosystem is moving incredibly fast, bringing together fully reactive architectures, smart AI agents …
WebStorm 2026.2 is now available!If you work on a large TypeScript codebase, this release is a meaningful upgrade. TypeScript 7 support ships out of the box for projects already using it, delivering f
Google released the Genkit Agents API in preview for TypeScript and Go. The open-source framework packages message history, tool loops, streaming, and state persistence behind a single chat() interfac
JavaScript Weekly — Issue #794
How stacking middleware quietly collapsed our TypeScript inference—and what it took to fix it.
If you've ever had to pick a data grid library for a React or Vue app, you know the landscape: a...
React 19 useFormStatus and useFormState: Build Accessible Forms Without Extra State...
Master Shadcn Select components in React & Next.js. Learn installation, build timezone & multi-selects, and enhance your selection process.
If you need real-time BTC conversion (USD and BRL), polling an API every few seconds is usually not...
This is a submission for Weekend Challenge: Passion Edition What I Built Proof of...
What I Built I built a local Solana Devnet app called Passion Jar Solana, designed to turn...
Hey everyone! I was working on a Node.js project and realized I needed a better way to handle data...
Introduction I'm a full-stack engineer working in Tokyo. One day, I needed to build a...
Build production-ready WebSocket systems with connection pooling, heartbeat patterns, and reconnection strategies using TypeScript.
If you have built production Node.js applications using NestJS, you have likely encountered this...
Earlier this month I shipped two premium templates — a SaaS landing page and a developer portfolio....
Climate change is one of the biggest challenges of our generation, and carbon credits have become an...
Step-by-step tutorial: build a real AI agent using Claude API and MCP in 30 minutes. Includes code, architecture, error handling, and deployment. No fluff.
React 19 introduced two hooks specifically for server action forms: useFormState and useFormStatus....
You've got a JSON API response and you want TypeScript interfaces for it. Here's how to generate them...
TypeScript 7.0 is now officially available as a stable release, and this is one worth paying...
This is a submission for Weekend Challenge: Passion Edition What I Built Passion Flame is...
A few months ago, I started building something I thought only I would use. A few months ago, I...
Build a personal AI agent in Telegram using Bun, Telegraf, SQLite, and Composio. Zero-infrastructure with conversation memory and prompt-injection defenses.
Run real npm packages and TypeScript - all from a single 9 MB binary. Ant is a lightweight JavaScript runtime built from scratch on its own engine, with a Node-compatible API, a VM-isolated sandbox, and Wasm support built-in.
OpenScience, a TypeScript-based AI workbench, offers researchers a collaborative platform. But are its technical choices robust enough for demanding scientific workflows?
Today we are proud to announce the availability of TypeScript 7, a 10x faster native port of TypeScript! Since its early days, TypeScript has promised to
Struggling to type React components correctly? This TypeScript React tutorial walks you through using TypeScript in real React projects, from typing useState to building reusable typed components, with hands-on challenges throughout. ✏️ Study this course interactively on Scrimba: https://scrimba...
Vercel is acquiring Better Auth, the open source TypeScript auth library. It stays free and MIT licensed as the team builds identity for the agent era.
Type inference algorithm for biased record concatenation
JavaScript Weekly — Issue #793
AI SDK is the TypeScript SDK for building AI applications, features, frameworks, and agents across any model provider. AI SDK 7 focuses on what it takes to run AI in production.
`deno desktop` for building native desktop apps from web tech, first-class migration from npm/pnpm/yarn/Bun, CSS module imports, snapshot and parameterized testing, smaller `deno compile --bundle` binaries, and Node.js 26 compatibility.
AI SDK 7 is now available with WorkflowAgent, overhauled telemetry, top-level reasoning, provider-independent uploads, typed tool context, and granular timeout controls.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Gentle tour of type inference for records
JavaScript Weekly — Issue #791
The Release Candidate for TypeScript 7.0 is now available!
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
eve is an open-source framework for building, running, and scaling agents, with durable execution, sandboxed compute, approvals, and evals built in. In public preview.
JavaScript Weekly — Issue #790
Workflow SDK now supports TanStack Start applications on Vercel. TanStack Start is built on Vite and Nitro, so the existing workflow/vite plugin works directly.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Try Requestly For FREE: https://requestly.com Hono is an amazing library that makes building type safe backend APIs incredibly easy. In this video I will show you how to build a fully type safe API from scratch that utilizes email/password auth, JWT, and API keys to secure the application. I wi...
`import defer`, six new subcommands (`deno transpile`, `deno pack`, `deno bump-version`, `deno ci`, `deno why`, `deno audit fix`), network debugging in Chrome DevTools, framework-aware `deno compile`, and 3.66x faster cold npm installs.
Why we needed an agent firewall that speaks more than HTTP.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
A practical walkthrough of computational sensors on the path to production, with a deep dive on ESLint and static analysis as feedback for coding agents.
Explore how Capacitor LocalLLM enables on-device AI for iOS and Android apps with a unified TypeScript API. Learn how to build privacy-first mobile experiences using local LLMs, Apple Intelligence, and Gemini Nano—no cloud required.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
One neat thing about Bombadil’s specification language is that it’s plain TypeScript, with access to external NPM packages. I’ve written a specification that spell-checks my website — what you’re reading now — and I want to share how that turned out.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Chat SDK now supports browser chat UIs. Bring your bot to a React app via useChat, with the same handlers that fire on Slack, Discord, and Teams.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Bitwarden's CLI got hit by the Checkmarx supply-chain campaign, TypeScript 7.0 beta lands with the Go-rewritten compiler running ~10x faster than 6.0, and pgBackRest lost its maintainer of thirteen years leaving anyone running production Postgres with a real dependency-trust task this week. We've...
Fresh 2.3 ships true zero-JS pages, View Transitions, CSP nonce support, IP filtering, and Temporal API support in islands.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Today we are absolutely thrilled to announce the release of TypeScript 7.0 Beta! If you haven't been following TypeScript 7.0's development, this release
Vercel Workflows is now GA. Write durable, long-running functions in TypeScript or Python. No orchestrator, no Kubernetes, no separate infrastructure. 100M+ runs in beta across 1,500+ customers.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Build durable, long-running AI workflows and background jobs with an SDK. Now in beta for TypeScript and Python.
Learn how to build and deploy MCP (Model Context Protocol) apps on Azure Functions using TypeScript. This guide covers MCP tools, resources, local development, and serverless deployment with a practical weather app example.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
TypeScript 6.0 is now available! TypeScript 6 is a stepping-stone release, aligning with the upcoming native-speed 7.0 release.
Chat SDK is a unified TypeScript library for building chat bots that work across Slack, Discord, Teams, and more from a single codebase. Write once, deploy everywhere.
Streamdown v2.5 adds inline KaTeX support, staggered streaming animations, and a round of fixes for code blocks, CSV exports, and Tailwind v3 compatibility.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Today we are excited to announce the Release Candidate (RC) of TypeScript 6.0! To get started using the RC, you can get it through npm with the following
Responses API is now supported on Vercel AI Gateway, with no other provider accounts required and no markup on inference cost.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Streamdown v2.4 introduces new customization hooks, accessibility features, and user experience improvements for developers rendering markdown.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
PEP 827 introduces type manipulation to Python, bringing programmable, TypeScript-inspired type features to improve static typing, metaprogramming, and framework ergonomics.
Deno 2.7 stabilizes the Temporal API, adds Windows on ARM builds, npm overrides in package.json, brotli compression streams, self-extracting compiled binaries, deno create, and dozens of Node.js compatibility improvements.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
We’re introducing Strands Labs, a new Strands GitHub organization designed to give developers the ability to get hands-on with experimental, state-of-the-art approaches to agentic AI development. The Strands Agents SDK – available for both Python and TypeScript – has gained incredible traction in...
Add structured logging, distributed traces, and game analytics to your Deno game and learn how to use Deno Deploy's built-in logs, traces, and metrics dashboards.
Chat SDK is now open source and available in public beta. It's a TypeScript library for building chat bots that work across Slack, Microsoft Teams, Google Chat, Discord, GitHub, and Linear — from a single codebase.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Today we are announcing the beta release of TypeScript 6.0! To get started using the beta, you can get it through npm with the following command: npm
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Capture player identities, add a customization modal, and persist those preferences via Oak + PostgreSQL.
Instant Linux microVMs with defense-in-depth security for running untrusted code.
Deno Deploy is now generally available, plus some highlights of new features and tools.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Building a leaderboard with database integration for our example browser-based game.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
We've encapsulated 10+ years of React and Next.js optimization knowledge into react-best-practices, a structured repository optimized for AI agents and LLMs.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Streamdown v2 ships a smaller bundle with CDN-loaded assets and new Remend options for markdown streaming.
We've open-sourced bash-tool, which gives your agent a way to find the right context by running bash-like commands over files, then returning only the results of those tool calls to the model.
Adding obstacles, collision detection and game mechanics to our example browser-based game.
You can now access the MiniMax M2.1 model on Vercel's AI Gateway with no other provider accounts required.
Introducing agents, tool execution approval, DevTools, full MCP support, reranking, image editing, and more.
Effective TypeScript: 83 Specific Ways to Improve Your TypeScript
Vercel now supports vercel.ts, a new TypeScript-based configuration file that brings type safety, dynamic logic, and better developer experience to project configuration.
Learn how to build a ChatGPT app that connects to your Supabase database using mcp-use and Edge Functions. Create interactive widgets for schema exploration, data viewing, and SQL queries.
This series of posts will guide you through building a simple game using Deno. This post sets up the game loop, user controls and basic game physics.
A high severity Denial-of-Service (DoS) vulnerability has been found in React Server Components and Next.js. Deno has implemented mitigations in Deno Deploy. Immediate upgrades are required for other users.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
This release includes `dx` for running package binaries, more granular permissions, source phase imports, faster type checking with `tsgo`, native source maps, `deno audit`, and much more.
This series of posts will guide you through building a simple game using Deno. Each post corresponds to a stage in the development process, gradually introducing new features and concepts.
A minimal, vendor-agnostic JavaScript client for the Apache Iceberg REST Catalog API, providing type-safe catalog management for JavaScript and TypeScript developers.
Now, our TypeScript SDK empowers developers to leverage TypeScript's type safety and modern development features, enabling them to manage their DigitalOcean resources. In this blog, we’ll share insights into the making of DoTs and the approach we took to develop it.
A critical Remote Code Execution (RCE) vulnerability has been found in React Server Functions and Next.js. Deno has implemented mitigations in Deno Deploy. Immediate upgrades are required for other users.
Earlier this year, the TypeScript team announced that we've been porting the compiler and language service to native code to take advantage of better raw
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Every year I do the Advent of Code programming competition in a different language and (eventually) write about it. Last year I used Elixir, a functional programming languages with immutable data types based on the Erlang runtime. This post describes Elixir, and how it offers JS/TS developers a g...
Workflow Builder is a free, open-source template, powered by Next.js and the Workflow DevKit, that helps you build workflow builder applications and agents.
Elysia, a popular ergonomic TypeScript framework with end-to-end type safety, can now be detected and deployed at Vercel.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
A practical guide to building with OpenAI's Apps SDK. Learn what to expect from MCP tools, widget development, debugging 424 errors, and infrastructure choices.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Sharing Excess’s three-person development team routes perishable food at a national scale and ships faster with Neon branching, production-like test data, and scale-to-zero.
Turn TypeScript functions into durable, reliable workflows with automatic retries, persistence, and observability built in.
The Workflow Development Kit (WDK) makes async workflows in TypeScript reliable, durable, fault-tolerant, and portable across any cloud.
Vercel AI Cloud combines unified model routing and failover, elastic cost-efficient compute that only bills for active CPU time, isolated execution for untrusted code, and workflow durability that survives restarts, deploys, and long pauses.
Next.js 16 includes Cache Components, stable Turbopack, file system caching, React Compiler support, smarter routing, new caching APIs, and React 19.2 features.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Here’s a roundup of some of our popular open source libraries and how we use them in Deno.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Next.js 16 beta includes stable Turbopack, file system caching, React Compiler support, smarter routing, new caching APIs, and React 19.2 features.
Recent supply chain attacks on npm is a reminder that Node and npm grants unfettered access to your systems. Here's how Deno, with an opt-in security model, protects against these vulnerabilities.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Our legal battle over Oracle's claim on the word "JavaScript" is entering the discovery phase. Here's how you can help.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Simpler permission management with permission sets, new Deno.test APIs for setting up and tearing down test cases, specifying custom headers in WebSocket connections, runtime APIs in deno bundle, and more.
Streamdown 2.2 delivers animated per-word text streaming, improved custom HTML handling, and drop-in compatibility with ReactMarkdown - making it easier to adopt Streamdown in existing projects.
We partnered with Biome to push their noFloatingPromises lint rule to the limit, uncovering edge cases and showing how we solve hard problems together.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Fresh 2.0 beta introduces optional Vite integration - with hot reloading, faster boot times, seamless React aliasing, and the full Vite plugin ecosystem
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Fixes 69 issues (addressing 204 👍). Bun.SQL now supports MySQL and SQLite, alongside PostgreSQL. Native YAML support. 500x faster postMessage(string). Bun.build() compile API, with cross-platform targets. Reduced idle CPU usage. Bun.stripANSI for SIMD-accelerated ANSI escape removal. bunx --pack...
xmcp, a framework for building and shipping MCP applications with TypeScript, can now be deployed to Vercel with zero-configuration.
Next.js 15.5 includes Turbopack builds in beta, stable Node.js middleware, TypeScript improvements, `next lint` deprecation, and deprecation warnings for Next.js 16.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Fixes 141 issues (addressing 429 👍). Reduced idle CPU usage. Improved `bun:test` diffing. Automatic `ETag` and `If-None-Match` in static routes for `Bun.serve`. 40x faster `AbortSignal.timeout`. Windows long path support. `WebAssembly.compileStreaming` and `WebAssembly.instantiateStreaming`. Man...
Focus on your AI’s intelligence, not the UI scaffolding. AI Elements is now available as a new Vercel product to help frontend engineers build AI-driven interfaces in a fraction of the time.
Today we are excited to announce the release of TypeScript 5.9! If you're not familiar with TypeScript, it's a language that builds on JavaScript by
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Introducing type-safe chat, agentic loop control, new specification, tool enhancements, speech generation, and more.
Today we are excited to announce the Release Candidate (RC) of TypeScript 5.9! To get started using the Release Candidate, you can get it through npm with
Learn how to build, extend, and automate AI-generated apps like BI tools and website builders with v0 Platform API
Fixes 163 issues (addressing 1,043 👍). Introduces `bun install --linker=isolated` for pnpm-style isolated node_modules, `bun why` for dependency tree understanding, `bun pm pkg` commands for package.json management, enhanced `node:fs.glob()` with array patterns and exclude options, `node:module....
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
Sync Stripe webhook data directly to Postgres using standalone TypeScript library.
Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.
The v0 Platform API enables developers to programmatically generate, retrieve, and manage full stack web apps using RESTful endpoints and TypeScript SDK. Integrate v0 into your workflows, tools, or automation pipelines.
