openfn/core

ECMAScript parser

Esprima-compatible implementation of the Mozilla JS Parser API

Proper JavaScript code templating with source maps support.

Intercept and mock outgoing network TCP connections and HTTP requests for testing. Intercepts and gives you a Net.Socket, Http.IncomingMessage and Http.ServerResponse to test and respond with. Useful when testing code that hits remote servers.

JavaScript syntax tree transformer, nondestructive pretty-printer, and automatic source map generator

yargs the modern, pirate-themed, successor to optimist.

simple, flexible, fun test framework

Error-tolerant ECMAScript parser

vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Securely!

Improved deep equality testing for Node.js and the browser.