Retrieving Content from O365 / SharePoint Items

Prompt

const getDriveItemContent = async (client, driveId, itemId, name) => {
   try
       const filePath = `/drives/${driveId}/items/${itemId}`;
       const downloadPath = filePath + `/content`
       // this is where we get the contents and convert to base64
       const fileStream = await client.api(downloadPath).getStream();
       let chunks = [];
           for await (let chunk of fileStream) {
               chunks.push(chunk);
           }
       const base64String = Buffer.concat(chunks).toString('base64');
       // this is where we get the other metadata to include in response
       const file = await client.api(filePath).get();
       const mime_type = file.file.mimeType;
       const name = file.name;
       return {"name":name, "mime_type":mime_type, "content":base64String}
   } catch (error) {
       console.error('Error fetching drive content:', error);
       throw new Error(`Failed to fetch content for ${name}: ${error.message}`);
   }