A query library for ECMAScript AST using a CSS selector like query language.

Adds a static `extend` method to a class, to simplify inheritance. Extends the static properties, prototype properties, and descriptors from a `Parent` constructor onto `Child` constructors.

Parses and compiles CSS nth-checks to highly optimized functions.

A small set of utilities for child process.

Simple wrapper around the "child_process" module that makes use of promises

Run a child as if it's the foreground process. Give it stdio. Exit when it exits.

Wrap all spawned Node.js child processes by adding environs and arguments ahead of the main JavaScript file argument.

Take care of your `spawn()`

Put a bunch of emitted events in an array, for testing.

Swizzle a little something into your require() calls.

Spawn commands like `child_process.exec` does but return a `ChildProcess`

seriously like the best async child process library

A Promise-based interface into processes created by child_process.spawn

Selectors decision tree - choose matching selectors, fast

Walk any kind of tree structure depth- or breadth-first. Supports promises and advanced map-reduce operations with a very small API.

Get all children of a pid

Emit errors on stdout stream for a spawned child process

A small JS+SVG library for drawing railroad syntax diagrams.

A function that tells you whether a given element is overflowing its container or not. Useful for creating dropdowns and tooltips.

Traverse an ESTree-compliant AST