javascript - AWS SDK : s3.upload is not a function - Stack Overflow

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I am trying to upload files to my S3 bucket from my Node.js app, so I am following some very simple tutorials like this one.

The code is pretty straightforward :

const AWS = require("aws-sdk"); // fresh install, version : ^2.697.0

AWS.config.update({ // Credentials are OK
    accessKeyId: process.env.s3_accessKeyId,
    secretAccessKey: process.env.s3_secretAccessKey,
    region: 'eu-central-1'
});

const s3 = new AWS.S3();

let params = {
      // (some upload params, file name, bucket name etc)
 };

s3.upload(params); // <-- crash with error: "s3.upload is not a function"

I had a look at the official AWS documentation and s3.upload() seems to be a thing. I have no idea why I get an error.

If I console.log(s3.upload) I get undefined.

Node.js v13.11.0.

EDIT

I ended up using s3.putObject() which does pretty much the same thing as s3.upload(), and works, while the latter is still inexplicably undefined...

console.log(`typeof s3.upload = `);
console.log(typeof s3.upload); // undefined?? WHY

console.log(`typeof s3.putObject = `);
console.log(typeof s3.putObject); // function, and works

I am trying to upload files to my S3 bucket from my Node.js app, so I am following some very simple tutorials like this one.

The code is pretty straightforward :

const AWS = require("aws-sdk"); // fresh install, version : ^2.697.0

AWS.config.update({ // Credentials are OK
    accessKeyId: process.env.s3_accessKeyId,
    secretAccessKey: process.env.s3_secretAccessKey,
    region: 'eu-central-1'
});

const s3 = new AWS.S3();

let params = {
      // (some upload params, file name, bucket name etc)
 };

s3.upload(params); // <-- crash with error: "s3.upload is not a function"

I had a look at the official AWS documentation and s3.upload() seems to be a thing. I have no idea why I get an error.

If I console.log(s3.upload) I get undefined.

Node.js v13.11.0.

EDIT

I ended up using s3.putObject() which does pretty much the same thing as s3.upload(), and works, while the latter is still inexplicably undefined...

console.log(`typeof s3.upload = `);
console.log(typeof s3.upload); // undefined?? WHY

console.log(`typeof s3.putObject = `);
console.log(typeof s3.putObject); // function, and works

• javascript
• node.js
• amazon-s3
• aws-sdk

Share Improve this question Follow edited Jun 17, 2020 at 8:10 Jeremy Thille asked Jun 16, 2020 at 16:45 Jeremy ThilleJeremy Thille 26.4k1212 gold badges4747 silver badges6464 bronze badges 4

• what about other methods ? is it only specific to upload ? – Ersoy Commented Jun 16, 2020 at 17:00
• console.log(s3.copyObject) gives [ 'length', 'name', 'arguments', 'caller', 'prototype' ] so it is defined. Same thing for console.log(s3.createBucket), it's not undefined. Looks like the problem is specific to upload indeed – Jeremy Thille Commented Jun 16, 2020 at 17:05
• Thanks for the update about putObject, really helped me. – Roy Levy Commented Dec 21, 2021 at 15:27
• putObject may not work for every case. Ex github./aws/aws-sdk-js/issues/2961 – Akshay Commented Dec 5, 2022 at 12:56

Add a ment  | 

4 Answers 4

Sorted by: Reset to default 2

Use putObject, example:

s3.client.putObject({
      Bucket: bucketName,
      Key: 'folder/file.txt',
      Body: data,
      ACL: 'public-read'
   }, function (res) {
      console.log('Successfully uploaded file.');
})

Documentation: https://docs.aws.amazon./AWSJavaScriptSDK/latest/AWS/S3.html#putObject-property

Can also try reinstalling aws-sdk package. Refer: https://github./aws/aws-sdk-js/issues/916#issuement-191012462

You can try this

s3 = new AWS.S3({apiVersion: '2006-03-01'});

s3.upload(params, function(err, data) {
  console.log(err, data);
});

For anyone running into this problem in 2024, the SDK's api has changed and the upload method is available from the @aws-sdk/lib-storage package.

For uploading images, I ended up using the PutObjectCommand. Here is the AWS Documentation and example code below:

import {S3Client, PutObjectCommand} from '@aws-sdk/client-s3';
const s3 = new S3Client({region: process.env.AWS_REGION});

// base64Image is your encoded image
const buffer = Buffer.from(base64Image, 'base64');

const params = {
    Bucket: 'bucket-name',
    Key: 'file-name.png',
    Body: buffer,
    ContentEncoding: 'base64',
    ContentType: 'image/png',
    ACL: "public-read"
};

const mand = new PutObjectCommand(params);
await s3.send(mand);

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