@mason-api/cli/src/index.js

CLI assistant for Mason builder

#!/usr/bin/env node
import Yargs from 'yargs';
import BabelPolyfill from 'babel-polyfill';

const yargs = Yargs // eslint-disable-line
  .usage('Usage: $0 <command> [options]')
  .example('$0 html 3030 4040 default')
  .commandDir('commands')
  .command('$0', 'default', () => {}, (argv) => {
    setTimeout(() => {
      // guide is a default command if `mason` is called without positional arguments
      if (argv._.length === 0) {
        yargs.exec(`guide ${process.argv.slice(2).join(' ')}`);
      // when arguments are provided but no command was matched, assume `generate` command
      } else {
        yargs.exec(`generate ${process.argv.slice(2).join(' ')}`);
      }
    }, 10);
  })
  .option('verbose', {
    alias: 'v',
    describe: 'Output additional information',
  })
  .option('api-key', {
    alias: 'k',
    describe: 'Key for authentication, can be set via $MASON_API_KEY',
  });

global.yargs = yargs;

yargs.exec = (input) => {
  yargs.parse(input, (err, args, output) => {
    if (output) {
      // Remove types (e.g. [string], [boolean]) from the output
      output = output.replace('Positionals:', 'Arguments:');
      output = output.replace(/\[\w+\]\n/g, '\n');
      output = output.replace(/(?:\n\s+)?\[default:\s*(.*?)\]\n/g, '\n');
      output = output.replace(/\[choices:\s*([\s\S]+?)\]\n/g, (m, choices) => `        (${choices.replace(/"/g, '').replace(/\s+/g, ' ')})\n`);
      output = output.replace(/\n\s*--version.*?\n/, '\n');

      // Show the modified output
      console.log(output);
    }
  });
};

yargs.exec(process.argv.slice(2));