Cliffy VS Commander.js

Due to Node's asynchronous behavior, it makes Node great for long-running processes that make a lot of HTTP requests, database calls, and other async ops, like a web server or a REST API. However, if I am making a CLI tool for pretty much personal use only, with very minimal async operations, then blocking the event loop with a synchronous function that will resolve almost immediately will make no difference perceivable to a human brain or have any speed benefits that someone can actually observe (think `fs.readFileSync` or `require('dotenv') of 10 line config file, or a quick embedded db (sqlite) query with only ~100 records. I'm wondering what the best way to implement the database part of the app synchronous. I can read/write to JSON files but it would be tricky because the data is relational, and some complex joins and other data wrangling operations are required (complex to perform in JS but are easy to implement in a SQL statement). It's not important what the operations are, that's not the point of this post. This is mostly a personal project of interest: making this CLI tool completely avoiding any async operations/using no promises. I would like to use node tho, as I said this is just out of interest and I also want to experiment with several CLI libraries such as Ink or Cliffy.

Visit the Commander.js reference.

In the previous article, I looked at a Commander to configure and accept cli options and assign it to a variable called program.

You can write a command line utility using zx or commander.js. Hit a public api, spit stuff out in the console, etc.

In your index.js you can do whatever you want, even create an interactive CLI (check commander).

There is clearly a whole load of repetition, so this should be fairly easy to build and parameterise. Essentially this will all just be string building so we won't need to use any particular libraries for most of this script. We will need a way to call ffmpeg though - and ffmpeg will need to be present too, of course. To call a CLI command we can use the package commander.

Commander.js is an NPM package that makes it easier to build CLI tools. You can find its documentation over here

You can also use npm package commander to make more complex command line tool with lot of options and sub commands.

commander - npm - Required. A library that lets you define the commands and their arguments, options, help, etc.

Throughout my time writing and updating my static-site generator, I've been using npm from the very foundation I use an npm package called commander. Therefore, it is obvious that for the tool that I will be using to publish my ssg, I will do so with npm.

The command line has thousands of tools, such as awk, sed, grep, and find available at your disposal that cut development time and automate tedious tasks. Creating a command line tool in Node.js isn't very complicated, thanks to a powerful library like Commander.js.