Remove dupes using es6 symbols

remove-dupes-using-symbols.js

let testNews = [{...}];

function filterDupes(y) {
  y = y.map(x => {
    const combined = x.title+x.description;
    const id = Symbol.for(combined.replace(/[^\w]+/g, ''))
    return {...x, id}
  })

  var seen = {};
  var arr = [];

  for (let item of y) {  
    if (!seen[item.id]) {
      seen[item.id] = true;
      arr.push(item)
    } else {
      console.log('DUPE FOUND!', item.id)
    }
  }
  return arr;
}

console.log('FILTERED ARR', filterDupes(testNews))