Railcar

Automatic fuzzing for JavaScript libraries without harnesses.

Railcar is a research prototype. Expect breaking changes before v1.0.

Installation

We build and test Railcar on Node 24.6.0 on Linux. Railcar does not support Windows but runs on WSL.

npm install -D @railcar/cli
npx railcar entry-point.js

where entry-point.js is the root of your JavaScript library. See npx railcar --help for more options.

For more details and other features, see the docs.

License

Railcar is distributed under AGPL-3.0-or-later. The package @railcar/support (code in packages/support) is distributed under Apache-2.0. See REUSE.toml for details.