Omit object property

omit.js

const omit =  (object, key) => {
  const objectCopy = Object.assign({}, object);
  Object.keys(objectCopy).forEach(itemKey => {
    if(key === itemKey) {
      delete objectCopy[itemKey];
    }
  })
  return objectCopy;
};

const justins = {
 '1': {id: 1, name: 'Justin Bieber'},
 '2': {id: 2, name: 'Justin Timberlake'},
 '3': {id: 3, name: 'Justin Time'}
}

const lessJustins = omit(justins, '1'); 
// {
// '2': {id: 2, name: 'Justin Timberlake'},
// '3': {id: 3, name: 'Justin Time'}
// }
const oneJustin = omit(lessJustins, '2');  // { '3': {id: 3, name: 'Justin Time'} }