ef4/fast-sourcemap-concat

fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.

Structured logging via heimdalljs

Recursively mkdir, like `mkdir -p`

Generates and consumes source maps

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

Reads files from a real location

simple, flexible, fun test framework

run ESLint as mocha tests

A deep deletion module for node (like `rm -rf`)

JavaScript test spies, stubs and mocks.

Simple implmentation of Stream.Readable and Stream.Writable holding the data in memory.