PWV Portfolio Feed

5/ Oxlint

◆ Was not in the shortlist due to being new but...
◆ #3 most mentioned write-in
◆ Growing fast without being a survey default

Oxlint has a growing amount of users and is the fastest linting tool out there.

4/ Rolldown

◆ #2 in overall interest (right behind Vitest)
◆ 94% satisfaction from existing adopters
◆ #7 tool that participants want to read more about

Impressive for a bundler that was mostly in beta over the last year!

3/ Vitest

◆ Most adopted technology in the JS ecosystem
◆ #2 in satisfaction overall (right behind Vite)
◆ Interest is continuously growing since 2022
◆ Users praise ESM-first design, browser mode, and DX

Vitest is the default for modern testing.

2/ Vite

◆ Highest overall satisfaction (98%)
◆ Vite 8 with Rolldown is anticipated
◆ Participants are looking forward to Full Bundle Dev Mode

Vite is the go-to build tool for modern web development.

The State of JS 2025 results are out!

🏆 Most Adopted Tech → Vitest
🏆 Highest Satisfaction → Vite (98%) & Vitest (97%)
🏆 Highest Interest → Vitest (83%) & Rolldown (80%)

But that's not all!

A thread 🧵

Tuist now includes links to the PRs in every changelog entry so you can see the code that enabled each feature or fix 🔗

Better transparency and easier to dive into the implementation details when you need them.

found this metal-punch plate for encoding x/y coordinates on a telephone pole in columbus ohio. probably in a local grid system?

Enabling it is simple. Just add this to your Rolldown config:

```js
export default {
  experimental: {
    lazyBarrel: true,
  },
};
```

For Vite 8, you can put it under `build.rolldownOptions`

Rolldown's Lazy Barrel Optimization supports all the patterns you'd expect:

◆ `export * from './components'`
◆ `export { Component } from './Component'`
◆ `export * as ns from './module'`
◆ Mixed exports
◆ Circular references
◆ Self re-exports

Real-world impact with Ant Design as example

```js
import { Button } from 'antd';
```

◆ Without: 2986 modules, ~65ms
◆ With: 250 modules, ~28ms

That's 92% fewer modules and 2-4x faster builds.

Without any optimization, your bundler has to traverse the entire barrel file and compile all modules, even the unused ones.
But with Lazy Barrel Optimization, Rolldown only includes what you actually use and skips the rest.

You often do not use all functions or components from a library, but they are all exported from a single barrel file.

```js
// some-lib/index.js
export { a } from './a';
export { b } from './b';
// more exports here [...]

// main.js
import { a } from 'some-lib';
```

🚀 Lazy Barrel Optimization in Rolldown

Barrel files, files that re-export from other modules, are common in modern JavaScript projects but a nightmare for your build time.
Rolldown now has Lazy Barrel Optimization to fix this.

Here's how it works 🧵

database correctness seems like the only kind, database software is all formally proven and simulation tested and every other genre of software is the wild west. "actually testing web applications" is impossible in practice. i feel like this engenders an unearned sense of superiority.