Node Symfony Console

This is a straight port of Symfony's Console Component v5.1. Augmented with the spinner functionality largely inspired by alecrabbit/php-console-spinner

Although fully functional, this is very much WIP.

Usage

Eventually we will write ported documentation. For now follow Console Component v5.1 documentation and translate the examples to JS.

 // Most used classes are accessible as direct imports
const {
 Terminal,
 Application,
 SingleCommandApplication,
 Command,
 Question,
 ConfirmationQuestion,
 ChoiceQuestion,
 ProgressBar,
 ProgressIndicator,
 Table,
 TableStyle,
 Output,
 Input,
 InputArgument,
 InputOption,
 Spinner,
 SpinnerFrames} = require('node-symfony-console');

// All of the underlying classes can be accessed throught the console export. Follow the
// original PhP namespace class paths.

const { console }    = require('node-symfony-console');

// PHP Class \Symfony\Component\Console\Helper\HelperSet
const HelperSet      = console.helper.HelperSet;     

// PHP Class \Symfony\Component\Console\Tester\CommandTester
const CommmandTester = console.tester.CommandTester; 

Hello World Example

Create a command

const { Command, InputArgument, ConfirmationQuestion } = require('node-symfony-console');

class GreetCommand extends Command {
  static get defaultName() {
    return 'foo:helloworld';
  }

  configure() {
    this
      // the short description shown while running "node bin/console list"
      .setDescription(`Print hello world`)
      // the full command description shown when running the command with
      // the "--help" option
      .setHelp('Print hello world, pass argument')
      .addArgument('name', InputArgument.REQUIRED, 'Who do you want to greet?')
      .addArgument('last_name', InputArgument.OPTIONAL, 'Your last name?');
  }

  async execute(input, output) {
  
      // Do something asynchronous like an API call or 
      // asking a question
      const q = new ConfirmationQuestion('<info>Are you leaving</info> (y/n): ');
      const leaving = await this.getHelper('question').ask( input, output, q);
      
      let greet = `${leaving?'Good Bye':'Hi'} ${input.getArgument('name')}`;
      const lastName = input.getArgument('last_name');
      
      if (lastName) {
        greet = `${greet} ${lastName}`;
      }
  
      output.writeln(`${greet}!`);
      return 1;
    }
}

module.exports = GreetCommand;

Create a application and include the command. This can be any file IE: bin/console.js

const {Application} = require('node-symfony-console');
const GreetCommand = require('./GreetCommand');

const application = new Application();
application.add(new GreetCommand());
application.run();

Run the command:

$ node bin/console.js
Console Tool

Usage:
  command [options] [arguments]

Options:
  -h, --help            Display this help message
  -q, --quiet           Do not output any message
  -V, --version         Display this application version
      --ansi            Force ANSI output
      --no-ansi         Disable ANSI output
  -n, --no-interaction  Do not ask any interactive question
  -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:
  help            Displays help for a command
  list            Lists commands
 foo
  foo:helloworld  Print hello world

$ node bin/console.js foo:helloworld Jeroen
Are you leaving (y/n): n
Hi jeroen!

$ node bin/console.js foo:helloworld Jeroen "de Lau"
Are you leaving (y/n): y
Good Bye Jeroen de Lau!

Known omissions and limitations

Porting changes:

• Interfaces have been removed
• Abstract classes have been converted to regular classes
• PhP associative arrays do not always translate well to JS {} or []
• Itterable support is spotty, WIP
• Node requires not separate multibyte support for most situations, in general these functions were stripped
• Terminal Capability detection was quite specific to PhP, tested on Mac, on other terminals millage may vary
• Exception classes have been renamed to Error
• Not all Exceptions types have been ported, instead using generic throw Error
• Verbosity constants can be found in Output const {Output} = require('node-symfony-console')

Omissions: Following have not (yet) been ported

• Events
• Logger
• Lazy Loading
• List command does not support format

Contributing

Contributions are welcome! Most of the tests have been written in JS.

Resources

• Original Documentation (php)

Credits

This library is converted from Symfony's Console Component: Find sources and license at https://github.com/symfony/component

This library uses code from the spinner library Find sources and license at https://github.com/alecrabbit/php-console-spinner