easy observable cli tasks

To install @push.rocks/smartcli, use the following command in your terminal:

npm install @push.rocks/smartcli --save

This will add @push.rocks/smartcli as a dependency to your project's package.json file and download it into the node_modules folder.

The @push.rocks/smartcli module is designed to simplify the creation of command-line interfaces (CLIs) by providing an easy-to-use API for managing CLI commands and options. It combines observables with the parsing power of yargs-parser to offer a dynamic and flexible way to handle various CLI tasks.

First, ensure you have TypeScript and the necessary types for node installed in your project. If not, you can add them by running:

npm install typescript @types/node --save-dev

Then, import the Smartcli class from the @push.rocks/smartcli package.

import { Smartcli } from '@push.rocks/smartcli';

Create an instance of Smartcli. This instance will be used to define and manage your CLI commands.

const mySmartcli = new Smartcli();

With Smartcli, you can define commands that your CLI tool can execute. Here's how you can add a new command:

mySmartcli.addCommand('install').subscribe((argv) => {
  console.log('Install command was called with arguments:', argv);
});

In this example, when the user types install after your CLI tool's name in the terminal, the provided function will execute, printing the parsed arguments to the console.

Options can be accessed using the getOption method. If you have an option named --config or -c, you can access its value like this:

const configValue = mySmartcli.getOption('config');
console.log('Config value:', configValue);

If you want to perform a task when no specific command is provided, you can use the standardCommand method:

mySmartcli.standardCommand().subscribe((argv) => {
  console.log('No specific command provided. Running default task with arguments:', argv);
});

To add a version option that prints the version of your CLI tool, use addVersion:

mySmartcli.addVersion('1.0.0');

For a help option that displays helpful information about your CLI commands and options, use addHelp:

mySmartcli.addHelp({
  helpText: 'Here are the commands you can use...'
});

After defining all your commands and options, call startParse to begin parsing the command line input and execute the corresponding actions:

mySmartcli.startParse();

You can also define aliases for your commands, allowing users to use alternate names for them:

mySmartcli.addCommandAlias('install', 'i');

With this setup, both install and i will trigger the same command action.

Since commands in smartcli are handled using observables, you can easily integrate asynchronous operations within your command actions. This makes it perfect for CLI tasks that involve file operations, network requests, or any other async tasks.

@push.rocks/smartcli offers a robust and intuitive way to build CLI tools with TypeScript, leveraging the reactive programming paradigm. By following the examples provided in this guide, you'll be able to create a feature-rich command-line application tailored to your specific needs.

Remember, this is just the start. The true power of smartcli lies in its flexibility and the vast ecosystem of RxJS. Dive into the RxJS documentation to explore more ways to handle data streams and asynchronous events in your CLI app.

This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the license file within this repository.

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