Source: https://seerepo.com/r/pmndrs/react-spring/built
Markdown source: https://seerepo.com/r/pmndrs/react-spring/built.md
Description: react-spring is a TypeScript repo built with React and wouter. It is tested with Vitest and vitest-browser-react.

# What is react-spring built with?

react-spring is a TypeScript repo built with React and wouter. It is tested with Vitest and vitest-browser-react. It has 35,623 written lines, with 50 test files.

Read on November 8, 2026, at commit 83e4760.

Repository: https://github.com/pmndrs/react-spring

## Frontend (/)

### The base

- **[React](https://seerepo.com/uses/react)**: 3 files

## Support (/)

### Testing

- **Vitest**: 3 files
- **vitest-browser-react**: 3 files

### Tools

- **tsdown**: 1 file

## Frontend (packages/animated)

### The base

- **[React](https://seerepo.com/uses/react)**: 1 file

## Frontend (packages/core)

### The base

- **[React](https://seerepo.com/uses/react)**: 12 files

## Support (packages/core)

### Testing

- **vitest-browser-react**: 18 files
- **Vitest**: 11 files

## Frontend (packages/parallax)

### The base

- **[React](https://seerepo.com/uses/react)**: 1 file

## Support (packages/parallax)

### The base

- **wouter**: 1 file

### Testing

- **vitest-browser-react**: 1 file

## Frontend (packages/shared)

### The base

- **[React](https://seerepo.com/uses/react)**: 8 files

## Support (packages/shared)

### Testing

- **Vitest**: 1 file
- **vitest-browser-react**: 1 file

## Frontend (packages/types)

### The base

- **[React](https://seerepo.com/uses/react)**: 1 file

## Frontend (targets/three)

### The base

- **[React](https://seerepo.com/uses/react)**: 2 files

### Interface

- **@react-three/fiber**: 2 files
- **[three](https://seerepo.com/uses/three)**: 1 file

## Frontend (targets/web)

### The base

- **[React](https://seerepo.com/uses/react)**: 3 files

## Support (targets/web)

### Testing

- **vitest-browser-react**: 2 files
- **Vitest**: 1 file

### Tools

- **csstype**: 1 file

## Other repos with a similar stack

- [remotion-dev/remotion](https://seerepo.com/r/remotion-dev/remotion/built): React, @react-three/fiber, three · [Compare](https://seerepo.com/compare/pmndrs/react-spring/vs/remotion-dev/remotion)
- [paperclipai/paperclip](https://seerepo.com/r/paperclipai/paperclip/built): React, three
- [heygen-com/hyperframes](https://seerepo.com/r/heygen-com/hyperframes/built): React, three
- [code-yeongyu/oh-my-openagent](https://seerepo.com/r/code-yeongyu/oh-my-openagent/built): React, three
- [webpack/webpack](https://seerepo.com/r/webpack/webpack/built): React, three
- [DavidHDev/react-bits](https://seerepo.com/r/DavidHDev/react-bits/built): React, three

## Frequently asked questions

### What language is react-spring written in?

react-spring is written in TypeScript, with 35,623 written lines.

### What framework does react-spring use?

react-spring is built with React and wouter.

### Does react-spring have tests?

Yes. react-spring has 50 test files and is tested with Vitest and vitest-browser-react.

### Which repos have a stack like react-spring's?

The ones that share most of its stack: remotion-dev/remotion, paperclipai/paperclip, and heygen-com/hyperframes.

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.