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Created November 24, 2022 15:17
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AWS S3 upload function
import { PutObjectOutput, PutObjectRequest } from 'aws-sdk/clients/s3';
import {AWSError} from 'aws-sdk/lib/error';
import * as S3 from 'aws-sdk/clients/s3';
import Connect from './connection';
* Uploads a file to your bucket in either the root or a subdirectory
* In this example we are making all objects publicly accessible by using the ACL 'public-read'. If you want to make
* the file private or use a different access policy then you can read more about canned ACLs here:
* @param bucket - The name of your bucket (This will be the name you used when setting up with your storage provider)
* @param file - The file you wish to upload
* @param objectName - The name that you want to use to store the file (must include file extension)
* @param path - defaults to the root of your bucket, or provide a path to a directory if you wish to store file in a subdirectory
* @constructor
* @returns - The full url of the uploaded file
export default async function Upload(bucket: string, file: Express.Multer.File, objectName: string, path: string | null = null): Promise<string> {
return new Promise<string>((resolve, reject) => {
const s3: S3 = Connect(path);
const params: PutObjectRequest = { Bucket: bucket, Key: objectName, Body: file.buffer, ACL: 'public-read', ContentType: file.mimetype };
s3.putObject(params, (err: AWSError, data: PutObjectOutput) => {
if (err) reject(err);
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