Hacker News with Generative AI: Javascript

Show HN: Mastra – Open-source JS agent framework, by the developers of Gatsby (github.com/mastra-ai)
Mastra is an opinionated Typescript framework that helps you build AI applications and features quickly. It gives you the set of primitives you need: workflows, agents, RAG, integrations and evals. You can run Mastra on your local machine, or deploy to a serverless cloud.

Open Source, AI, Javascript, Frameworks

423 points by calcsam 1 day ago | 145 comments

Open source back end for role play voice agents (github.com/alievk)
Voi is a free and open source backend for realtime voice agents. Check the JS client.

Open source, Voice Agents, Realtime, Backend, Javascript

4 points by alievk91 10 days ago | 0 comments

There's Math.random(), and then there's Math.random() (2015) (v8.dev)
Math.random() is the most well-known and frequently-used source of randomness in Javascript.

Javascript, Randomness, Programming, Performance

124 points by beepill 17 days ago | 76 comments

Create React App is now deprecated (github.com/facebook)

React, Javascript, Web Development, Deprecation, Open Source

6 points by rk06 18 days ago | 2 comments

A bookmarklet to kill sticky headers (2013) (mcdiarmid.org)
There is currently a trend for using sticky headers on websites. There's even a sticky header web startup.

Web Development, User Experience, Javascript, Bookmarklets, Accessibility

219 points by clockworksoul 19 days ago | 88 comments

Learn Yjs Interactively (learn.yjs.dev)
Welcome to Learn Yjs — an interactive tutorial series on building realtime collaborative applications using the Yjs CRDT library.

Real-Time Collaboration, Web Development, Javascript, Tutorials, CRDTs

309 points by paulgb 35 days ago | 42 comments

Show HN: Real-time nonlinear optics simulation (JS/GLSL) (github.com/westoncb)
An interactive study of controlled nonlinear dynamics, implemented through the concrete example of coupled optical fields.

Science, Physics, Simulation, Javascript, Web Development

46 points by westoncb 35 days ago | 12 comments

Show HN: TypeScriptNotebook – Experiment with NPM in the Browser (typescriptnotebook.com)

TypeScript, Javascript, Web Development, Tools, Experiments

20 points by shikherverma 35 days ago | 12 comments

Show HN: TypeScript/React/Vue Window Layout Manager (Tabs, Floating, Popouts) (github.com/mathuo)
Zero dependency Docking Layout Manager. Supports Vanilla TypeScript, React and Vue.

TypeScript, React, Vue, Javascript, Front-end Development

334 points by mathuo 40 days ago | 63 comments

Clay – UI Layout Library (nicbarker.com)

UI, Libraries, Web Development, Javascript

460 points by ivmoreau 63 days ago | 87 comments

Hexagon Page Animations (redblobgames.com)
When I first wrote my hexagon guide[1] in 2013 I used d3.js[2], which has a nice animation system.

Hexagon, Animation, Javascript, Game Development

5 points by ibobev 65 days ago | 0 comments

Supply Chain Attack Detected in Solana/Web3.js Library (socket.dev)
A supply chain attack has been detected in versions 1.95.6 and 1.95.7 of the popular @solana/web3.js library.

Security, Web3, Javascript, Cryptocurrency, Supply Chain

17 points by feross 79 days ago | 0 comments

Following up "Mother of all Htmx demos" (guillot.me)

Web Development, Javascript, HTML

92 points by thunderbong 104 days ago | 18 comments

We shrunk our Javascript monorepo git size (jonathancreamer.com)
This isn't click bait. We really did this! We work in a very large Javascript monorepo at Microsoft we colloquially call 1JS. It's large not only in terms of GB, but also in terms of sheer volume of code and contributions. We recently crossed the 1,000 monthly active users mark, about 2,500 packages, and ~20million lines of code! The most recent clone I did of the repo clocked in at an astonishing 178GB.

Javascript, Monorepos, Git, Optimization, Microsoft

334 points by kwantaz 117 days ago | 213 comments

Heic-To: Convert HEIC/HEIF Images to JPEG, PNG in Browser (github.com/hoppergee)
Convert HEIC/HEIF images to JPEG, PNG in browser using Javascript.

Image Conversion, Javascript, Web Development, Programming Tools

7 points by thunderbong 124 days ago | 0 comments

Ten Minute Physics (matthias-research.github.io)
This is the page accompanying my youtube channel Ten Minute Physics. In short episodes of about ten minutes I explain the basic concepts of physically based simulation. Each time I write a little javascript demo that runs in any browswer.

Physics, Science, Education, Javascript, Web Development

4 points by davikr 127 days ago | 0 comments

Sqlite3 WebAssembly (sqlite.org)
This site is home to the documentation for the SQLite project's WebAssembly- and JavaScript-related APIs, which enable the use of sqlite3 in modern WASM-capable browsers. These components were initially released for public beta with version 3.40 and will tentatively be made API-stable with the 3.41 release, pending community feedback.

WebAssembly, Databases, Javascript, Software, SQLite

647 points by whatever3 128 days ago | 192 comments

Show HN: State-in-url package for state management with URL sync (github.com/asmyshlyaev177)
Easily share complex state between unrelated React components, with IDE autocomplete and TS validation. Without any hasssle or boilerplate.

React, Javascript, State Management, Web Development

6 points by asmyshlyaev177 141 days ago | 0 comments

Vue 3.5 released (vuejs.org)

New Releases, Javascript, Vue.js

105 points by timetraveller26 170 days ago | 78 comments

Show HN: Convert Mp4 to Wav in Browser (mp4wav.com)

Web Development, Audio Conversion, Javascript, Online Tools

11 points by ImranK 175 days ago | 1 comments

Why Htmx is far superior to React and NextJS (henriqueleite42.com)

Web Development, Front-end Frameworks, Javascript

14 points by Liriel 176 days ago | 7 comments

Show HN: Typescript library for editing videos with code (github.com/diffusionstudio)