class Argvs {  constructor() {    this.argvsAll = this.argvsAll();  }  argvsAll() {    return process.argv.slice(2).reduce((acc, item) => {      item = item.split(/=/);      const [k, v] = [item[0].replace(/-/gi, ''), item[1]];      acc.push({        [k]: v      });      return acc;    }, [])  }  argvsGet(k) {    return this.argvsAll.reduce((acc, item) =>      acc ?      acc :      (k in item) ?      acc = item[k] :      acc, false)  }  argvsKeys(argvsAll) {    if(!argvsAll) argvsAll = this.argvsAll;    return argvsAll.reduce((acc, item) =>{      return [...acc, ...Object.keys(item)]    }, [])  }  argvsHas(k){    return Object.is(this.argvsKeys().indexOf(k), -1) ? false : true;  }}// λ node server.js --name=ajanuw --post=14let a = new Argvs();console.log( a.argvsAll); // [ { name: 'ajanuw' }, { post: '14' } ]console.log( a.argvsGet('name')); // ajanuwconsole.log( a.argvsGet('post')); // 14console.log( a.argvsKeys()); // [ 'name', 'post' ]console.log( a.argvsHas('name')); // true