Upload to S3 from Typescript

create-signed-urls.ts

// Demo of creating upload urls to AWS S3.
// See github.com/tomfa/nextjs-s3-upload for a complete app

import {
  S3Client,
  PutObjectCommand,
} from "@aws-sdk/client-s3";
import { getSignedUrl } from "@aws-sdk/s3-request-presigner";

const s3 = new S3Client({
  region: process.env.S3_BUCKET_REGION, // e.g. 'eu-central-1',
  credentials: {
    accessKeyId: process.env.SECRET_AWS_ACCESS_KEY_ID as string,
    secretAccessKey: process.env.SECRET_AWS_SECRET_ACCESS_KEY as string,
  },
});

type GetUploadUrlProps = {
  folder: string;
  filename: string;
  acl?: "public-read" | "private";
  options?: { expiresIn?: number };
};
export const getUploadUrl = async ({
  folder,
  filename,
  acl = "public-read",
  options: { 
    expiresIn = 15 * 60  // 15 minutes
  } = {},
}: GetUploadUrlProps): Promise<{ signedUrl: string; key: string }> => {
  const key = `${folder}/${filename}`;
  const command = new PutObjectCommand({
    Bucket: config.s3.bucketName,
    Key: key,
    ACL: acl,
  });
  return getSignedUrl(s3, command, { expiresIn });
};