Sample usage of command-line-args and command-line-usage

commandline.js

const commandLineArgs = require("command-line-args");
const getUsage = require("command-line-usage");
const optionDefinitions = [
  { name: "folder", alias: "f", type: String },
  { name: "gpsfiles", alias: "g", multiple: true, defaultOption: true }
];

const sections = [
  {
    header: "Sportnut",
    content: "This utility converts .GPS files from the SPT Bridge application to Excel(.XLSX) format files."
  },
  {
    header: "Options",
    optionList: [{
      name: "gpsfiles",
      typeLabel: "[underline]{file1} [underline]{file2} .. [underline]{fileN}",
      description: "GPS files to convert."
    }, {
      name: "folder",
      typeLabel: "[underline]{folder}",
      description: "Folder path where the Excel files are saved."
    }
  ]
  }
];

const options = commandLineArgs(optionDefinitions);
const usage = getUsage(sections);

if (!options.gpsfiles) {
  console.log(usage);
  return -1;
}