Haikunator CLI (node)

haikunate.js

#!/usr/bin/env node

/*
Requirements:
node v7.6.0
node-getopt
haikunator
*/

const path = require('path');
const Haikunator = require('haikunator');

// command-line interface
if (require.main === module) {
  const Getopt = require('node-getopt');

  function main() {
    try {
      const haikunator = new Haikunator()
      const gotten = getopts();
      const cfg = buildConfig(gotten);
      const nameComponents = [...cfg.argv, haikunator.haikunate(cfg)];
      const name = nameComponents
        .filter(s => s !== "")
        .join("-");
      console.log(name);
    } catch (err) {
      console.error(err);
      process.exit(1);
    }
  }

  function getopts() {
    let optConfig = new Getopt([
      ['d', 'delimiter=ARG', 'word separator. Default: "-"'],
      ['l', 'token-length=ARG', 'how many random chars to suffix. Default: 4'],
      ['c', 'token-chars=ARG', 'set of characters for the random suffix. Default: "0123456789"'],
      ['x', 'token-hex', 'same as token-chars="0123456789abcdef". If true, chars in token-chars are ignored. Default: false'],
      ['h', 'help', 'display this help'],
    ]).bindHelp();
    optConfig.setHelp(
      "Usage: node "+path.basename(__filename)+" [OPTION]\n"+
      "Generate Heroku-like random names.\n"+
      "\n"+
      "[[OPTIONS]]\n"
    );
    const gotten = optConfig.parseSystem();
    const opts = gotten.options;

    if (opts.help) {
      optConfig.showHelp();
      process.exit(0);
    }

    return gotten;
  }

  function buildConfig(gotten) {
    const argv = gotten.argv;
    const opts = gotten.options;
    const cfg = {};

    for (let key of Object.keys(opts)) {
      let newKey = key;
      if (key.includes('-')) {
        let keyParts = key.split('-');
        let capitalized = keyParts
          .slice(1)
          .map(part => {
            if (part.length == 0) return '';
            return part.charAt(0).toUpperCase() + part.slice(1);
          })
          .join('');
        newKey = keyParts[0] + capitalized;
      }
      cfg[newKey] = opts[key];
    }
    cfg.argv = gotten.argv;

    return cfg;
  }

  main();
}