Scrape(PrusaPrints,Multi): Get Prints

var collection = [];
(async () => {
var options = {
  limit: 57,
};
async function* gen() { var i = 0; while (i <= options.limit) { yield i++; }};
 for await (let n of gen()) {
  var res = await fetch("https://www.prusaprinters.org/graphql/", {
  "headers": {
    "accept": "application/json, text/plain, */*",
    "accept-language": "en",
    "client-uid": "438a1f17-c2db-4c66-a318-46e9d624d922",
    "content-type": "application/json",
    "operation": "PrintList",
    "x-authorization": ""
  },
  "referrer": "https://www.prusaprinters.org/prints?page=0",
  "referrerPolicy": "no-referrer-when-downgrade",
  "body": `{\"operationName\":\"PrintList\",\"variables\":{\"filesType\":[],\"ordering\":\"-first_publish\",\"printerIds\":null,\"materialIds\":null,\"nozzleDiameters\":null,\"categoryId\":null,\"onlyFollowing\":null,\"featured\":null,\"includeUserGcodes\":null,\"limit\":500,\"offset\":${n*500}},\"query\":\"query PrintList($limit: Int!, $offset: Int, $categoryId: ID, $materialIds: [Int], $userId: ID, $printerIds: [Int], $ordering: String, $hasModel: Boolean, $filesType: [FilterPrintFilesTypeEnum], $includeUserGcodes: Boolean, $nozzleDiameters: [Float], $weight: IntervalObject, $printDuration: IntervalObject, $onlyFollowing: Boolean, $featured: Boolean, $featuredNow: Boolean, $usedMaterial: IntervalObject) {\\n  prints(limit: $limit, offset: $offset, categoryId: $categoryId, materialIds: $materialIds, printerIds: $printerIds, userId: $userId, ordering: $ordering, hasModel: $hasModel, filesType: $filesType, nozzleDiameters: $nozzleDiameters, includeUserGcodes: $includeUserGcodes, weight: $weight, printDuration: $printDuration, onlyFollowing: $onlyFollowing, featured: $featured, featuredNow: $featuredNow, usedMaterial: $usedMaterial) {\\n    ...PrintListFragment\\n    foundInUserGcodes\\n    printer {\\n      id\\n      __typename\\n    }\\n    user {\\n      rating\\n      __typename\\n    }\\n    __typename\\n  }\\n  printsCount(categoryId: $categoryId, materialIds: $materialIds, printerIds: $printerIds, userId: $userId, ordering: $ordering, hasModel: $hasModel, filesType: $filesType, nozzleDiameters: $nozzleDiameters, includeUserGcodes: $includeUserGcodes, weight: $weight, printDuration: $printDuration, onlyFollowing: $onlyFollowing, featured: $featured, featuredNow: $featuredNow, usedMaterial: $usedMaterial) {\\n    printsCount\\n    categoriesCounts {\\n      categoryId\\n      count\\n      __typename\\n    }\\n    __typename\\n  }\\n}\\n\\nfragment PrintListFragment on PrintType {\\n  id\\n  name\\n  slug\\n  ratingAvg\\n  ratingCount\\n  likesCount\\n  liked\\n  datePublished\\n  dateFeatured\\n  downloadCount\\n  displayCount\\n  inMyCollections\\n  foundInUserGcodes\\n  userGcodeCount\\n  userGcodesCount\\n  materials {\\n    id\\n    __typename\\n  }\\n  category {\\n    id\\n    path {\\n      id\\n      name\\n      __typename\\n    }\\n    __typename\\n  }\\n  modified\\n  images {\\n    id\\n    filePath\\n    __typename\\n  }\\n  filesType\\n  hasModel\\n  user {\\n    id\\n    slug\\n    avatarFilePath\\n    publicUsername\\n    __typename\\n  }\\n  __typename\\n}\\n\"}`,
  "method": "POST",
  "mode": "cors",
  "credentials": "omit"
});
var data = await res.json();
  collection = await [...collection, ...data.data.prints];
 }

var ids = new Set();

var uniqCollection = collection.reduce((a,d) => {
    var prev = ids.size;
    ids.add(d.id)
    prev < ids.size ?  a.push(d) : null;
   
    
    return a;
},[])
 const downloadCSV = (data, fileName) => {
		var d = document;
    var a = d.createElement('a');
    a.href = window.URL.createObjectURL(new Blob([JSON.stringify(data)],{type:'text/csv;charset=utf-8;'}));
    a.setAttribute('download', `${fileName}.json`);
    d.body.appendChild(a);
    a.click();
    d.body.removeChild(a);
  };
 downloadCSV(uniqCollection, "prusaPrints_2020-11");
})();