Dif

Judgement

What it is

Developer tool

What it does

A CLI that keeps feature flags and A/B tests as Markdown files in your repo and compiles them into a typed TypeScript client for Next.js, React and SvelteKit.

Adopt it when

You want Git-only flags for a JavaScript front end with no dashboard or signup.

Watch out

Created in May 2026 and pre-1.0.

Ready for

Experimental

Runs as

Command line and library

Built with

Rust and TypeScript

How established

New: started 5 months ago, latest release v0.8.0.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Dif → Rust → runs on a microchip

How compilers were built, back to punched paper tape

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