Convert google cloud storage file to base64 string

Question

i am retrieving a pdf file from google cloud storage. I need to convert this file to base64 string so that i can pass to api as request.This is is nodejs

const { Storage } = require("@google-cloud/storage");
const storage = new Storage(options);
const bucket = storage.bucket(bucketName);   
let remoteFile = bucket.file(fileName);

Need to convert this remoteFile object to base64 string. Actually i need to pass this remoteFile as attachment to sendgrid mail api.

Answer 1

As you can find here in the library sample, you need to download the file content first, and then you can do what you want with, encoded it in base64 if you want

....

remoteFile.download().then(function(data) {
  const file = data[0];
  ... convert base64 and continue here....
});