How to get videos from youtube in node

class Youtube {
    async getVideos(playlistId, pageToken) {
        const options = {
            key: clientKey,
            part: 'id,contentDetails,snippet',
            playlistId: playlistId,
            maxResult: 100, 
            pageToken
        }

        return new Promise((resolve, reject) => {
            try {
                youtube.playlistItems.list(options, (error, result) => {
                    if (isValid(result)) {
                        resolve(result)
                    } else {
                        throw error
                    }
                })
            } catch (e) {
                reject(e)
            }
        })
    }
}

{
 "kind": "youtube#playlistItemListResponse",
 "etag": "\"p4VTdlkQv3HQeTEaXgvLePAydmU/ZNTrH71d3sV6gR6BWPeamXI1HhE\"",
 "nextPageToken": "CAUQAA",
 "pageInfo": {
  "totalResults": 32,
  "resultsPerPage": 5
 },
 "items": [
  {
   "kind": "youtube#playlistItem",
   "etag": "\"p4VTdlkQv3HQeTEaXgvLePAydmU/pt-bElhU3f7Q6c1Wc0URk9GJN-w\"",
   "id": "UExDbDVOTTRxRDN1X0w4ZEpyV1liTEI4RmNVYW9BSERGdC4yODlGNEE0NkRGMEEzMEQy",
   "snippet": {
    "publishedAt": "2019-04-11T06:09:26.000Z",
    "channelId": "UCuPue-GLK4nVX8klxQITIOw",
    "title": "abc",
    "description": "abc",
    "thumbnails": {
     "default": {
      "url": "https://i.ytimg.com/vi/ZefmzgLabCA/default.jpg",
      "width": 120,
      "height": 90
     },
     "medium": {
      "url": "https://i.ytimg.com/vi/ZefmzgLabCA/mqdefault.jpg",
      "width": 320,
      "height": 180
     },
     "high": {
      "url": "https://i.ytimg.com/vi/ZefmzgLabCA/hqdefault.jpg",
      "width": 480,
      "height": 360
     },
     "standard": {
      "url": "https://i.ytimg.com/vi/ZefmzgLabCA/sddefault.jpg",
      "width": 640,
      "height": 480
     },
     "maxres": {
      "url": "https://i.ytimg.com/vi/ZefmzgLabCA/maxresdefault.jpg",
      "width": 1280,
      "height": 720
     }
    },
    "channelTitle": "try! Swift Conference",
    "playlistId": "PLCl5NM4qD3u_L8dJrWYbLB8FcUaoAHDFt",
    "position": 0,
    "resourceId": {
     "kind": "youtube#video",
     "videoId": "ZefmzgLabCA"
    }
   }
  }
 ]
}

async getVideosLoop(playlistId, nextPageToken, items, count) {
    const response = await this.getVideos(playlistId, nextPageToken)
    const newItems = items.concat(response.data.items)
    if (isValid(response.data.nextPageToken) && count < 10) {
        return this.getVideosLoop(playlistId, response.data.nextPageToken, newItems, count + 1)
    } else {
        return newItems
    }
}