Aran is a npm module for instrumenting JavaScript code which enables amongst other things: profiling, tracing, sandboxing, information-flow analysis, and symbolic execution. Aran performs a source-to-source code transformation largely compatible with ECMAScript2018 and fully compatible with ECMAScript5. As for any other npm module, Aran can be installed by running: npm install aran.
The capabilities of Aran can be extended with the below modules:

• Otiluke: Support for modular JavaScript programs. NodeJS programs are instrumented by modifying how module imports other modules. Web pages are supported by deploying a man-in-the-middle proxy.
• Linvail: Track primitive values through the store by deploying a transitive membranes based on ECMAScript Proxies.
• AranRemote: Deploy single-process analysis in a distributed context "for-free".