Simple arguments parser

argsParser.js

const args = ['-v', 'fileA', 'fileB', 'fileC', 'fileD', 'fileE', 'fileF', '-h', '-l', 'ro']; // process.argv.slice(2);

// supported arguments and their respective methods
const knownArgs = {
  '-v': (files) => console.log('files', files),
  '-l': (langs) => console.log('langs', langs),
  '-h': () => console.log('help'),
};

// parse arguments and provided values
const argsMap = {};
let current;
args.forEach((val) => {
  if (knownArgs[val]) {
    current = val;
    argsMap[current] = [];
  }
  if (current !== val) {
    argsMap[current].push(val);
  }
});

// call knownArgs methods with provided arguments
Object.keys(argsMap).forEach((key) => {
  knownArgs[key](argsMap[key]);
});