How to make a node-based CLI tool

Published

If you have a local repo you use all the time that would be useful as a global command line utility, this is for you! In this example, we're going to create a command line utility called blerp.

Add a CLI entrypoint file to your package

Call it something like cli.js. It should look like this:

#!/usr/bin/env node

console.log(`Hello! Command is ${process.argv[2]}`);

Tell npm your package has an executable entrypoint

In your package.json, add this:

"bin" : { "blerp" : "./cli.js" }

Install your package for use anywhere

Do this:

npm link

Now you can do this:

$ blerp flerp
> Hello! Command is flerp