dev‑env‑installer is a command‑line tool that automates setting up a multi‑repo development workspace. By reading a `workspace.json` file, it clones the listed GitHub repositories, runs `npm install` and `npm link` to cross‑link local packages, installs typings, and provides convenient `pullall`, `buildall` and `testall` commands. It’s aimed at JavaScript/Node developers who maintain several inter‑dependent npm modules and need a fast way to keep a local development environment in sync.