stdlib-js/repl

ECMAScript parser

Error-tolerant ECMAScript parser

ECMAScript (ESTree) AST walker

Lightweight debugging utility for Node.js and the browser

Node.js Streams, a user-land copy of the stream library from Node.js

Proxies nodejs require in order to allow overriding dependencies during testing.

tap-producing test harness for node and browsers

Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests and browser tests. Built for scale

Minimal TAP output formatter.