class FlagParser {
  static parse(args) {
    // guard
    if (false === Array.isArray(args)) { return []; }

    // Creates a flag from KeyValue pair
    let makeFlag = (kv) => {
      let b = {}
      let k = kv[0]
      let v = kv[1]

      // Test empty key, but not value
      if (k.length === 0 && v.length > 0) {
        k = v
        v = true
      }

      // Test one entry
      if (kv.length === 1) {
        k = kv[0]
        v = true
      }

      // set the object
      b[k] = v;

      return b;
    }

    let result = {}
    Array.from(args)
      .slice(2)
      .forEach(v => {
        let a = v.replace(/-{1,2}/g, "").split(/=/g) || [];
        result = Object.assign(result, makeFlag(a));
      });

    return result;
  }
}

function test_parser() {
  console.log(
    FlagParser.parse(
      [
        'C:\\Program Files\\nodejs\\node.exe',
        'path\\to\\file.js',
        'flagA=1',
        '--flagB=1',
        '--flagC',
        '-flagD',
        '-flagE=2'
      ])
  )
}