# lovablelabs/oj

> An experimental Rust-native build tool for React apps, optimized for memory and cold start instead of Vite. Supports SSR, Vite/Rollup plugins, and TanStack Start without source changes.

- Magnitude: 0.9 out of 10 — Steady
- Stars: 594 total · +0 stars on 2026-10-04 (UTC), ≈ 0 by evening
- Star trust: star growth looks organic
- Category: Developer tools · Language: Rust · License: MIT · Created: 2026-08-08 · Last push: 2026-10-03
- GitHub: https://github.com/lovablelabs/oj · Homepage: https://lovable.dev/blog/faster-previews-oj · Page: https://gitnova.dev/en/r/lovablelabs/oj

## Useful for

- Run a dev server for a React app with lower memory usage than Vite
- Build a production React bundle with SSR via oj build --ssr
- Run a TanStack Start app in dev and production without source changes

## Why it’s here

- The repository is 57 days old and already has 594 stars.
- Hacker News: “Show HN: OJ – A drop-in replacement for Vite in Rust” — 18 points, 17 days ago.
- Recent forks include notable developers: @snoopysecurity (510 followers), @matheusfrancisco (254 followers).

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 27
- Issues and pull requests: 307
- Watchers: 1
- Average over the last week: 3 per day
- Usual pace: 21 per day
- Latest release: v0.2.16 (2026-10-01)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-10-04 … 2026-11-02: 0, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None

## Magnitude by day, last 14 days

09-21 2.8, 09-22 3.3, 09-23 2.4, 09-24 2.2, 09-25 2.0, 09-26 1.8, 09-27 1.6, 09-28 1.8, 09-29 1.3, 09-30 1.5, 10-01 1.6, 10-02 1.7, 10-03 1.1, 10-04 1.1

## Hacker News

- Lovable rewrites Vite in Rust – Reduces memory usage by 10x — 26 points, 3 comments: https://news.ycombinator.com/item?id=49711590
- Show HN: OJ – A drop-in replacement for Vite in Rust — 18 points, 1 comments: https://news.ycombinator.com/item?id=49746713

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-10-04 21:29 UTC, updated every 30 minutes.