TanStack Start on AWS with SST

We are going to create a TanStack Start app, add an S3 Bucket for file uploads, and deploy it using the TanStackStart component.

View source

You can view the source of this example in our repo.

Before you get started, make sure to configure your AWS credentials.

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1. Create a project

Let’s start by creating our app.

npx gitpick TanStack/router/tree/main/examples/react/start-bare aws-tanstack-start
cd aws-tanstack-start

We are using a bare TanStack example template.

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Init SST

Now let’s initialize SST in our app.

npx sst@latest init
npm install

Select the defaults and pick AWS. This’ll create a sst.config.ts file in your project root.

It’ll also ask you to update your app.config.ts with something like this.

app.config.ts

export default defineConfig({
  server: {
    preset: "aws-lambda",
    awsLambda: {
      streaming: true
    }
  }
});

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Start dev mode

Run the following to start dev mode. This’ll start SST and your TanStack Start app.

npx sst dev

Once complete, click on MyWeb in the sidebar and open your TanStack Start app in your browser.

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2. Add an S3 Bucket

Let’s allow public access to our S3 Bucket for file uploads. Update your sst.config.ts.

sst.config.ts

const bucket = new sst.aws.Bucket("MyBucket", {
  access: "public"
});

Add this above the TanStackStart component.

Link the bucket

Now, link the bucket to our TanStack Start app.

sst.config.ts

new sst.aws.TanStackStart("MyWeb", {
  link: [bucket]
});

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3. Create an upload form

Add a form component in src/components/Form.tsx.

src/components/Form.tsx

import './Form.css'

export default function Form({ url }: { url: string }) {
  return (
    <form
      className='form'
      onSubmit={async (e) => {
        e.preventDefault()

        const file = (e.target as HTMLFormElement).file.files?.[0] ?? null

        const image = await fetch(url, {
          body: file,
          method: 'PUT',
          headers: {
            'Content-Type': file.type,
            'Content-Disposition': `attachment filename='${file.name}'`,
          },
        })

        window.location.href = image.url.split('?')[0]
      }}
    >
      <input name='file' type='file' accept='image/png, image/jpeg' />
      <button type='submit'>Upload</button>
    </form>
  )
}

Add some styles.

src/components/Form.css

.form {
  padding: 2rem;
}

.form input {
  margin-right: 1rem;
}

.form button {
  appearance: none;
  padding: 0.5rem 0.75rem;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 0.375rem;
  border: 1px solid rgba(68, 107, 158, 0);
  background-color: rgba(68, 107, 158, 0.1);
}

.form button:active:enabled {
  background-color: rgba(68, 107, 158, 0.2);
}

---

4. Generate a pre-signed URL

When our route loads, we’ll generate a pre-signed URL for S3 and our form will upload to it. Add a server function and a route loader in src/routes/index.tsx.

src/routes/index.tsx

export const getPresignedUrl = createServerFn().handler(async () => {
  const command = new PutObjectCommand({
    Key: crypto.randomUUID(),
    Bucket: Resource.MyBucket.name
  })
  return await getSignedUrl(new S3Client({}), command)
})

export const Route = createFileRoute('/')({
  component: RouteComponent,
  loader: async () => {
    return { url: await getPresignedUrl() }
  }
})

function RouteComponent() {
  const { url } = Route.useLoaderData()
  return (
    <main>
      <Form url={url} />
    </main>
  )
}

Tip

We are directly accessing our S3 bucket with Resource.MyBucket.name.

Add the relevant imports.

src/routes/+page.server.ts

import { Resource } from 'sst'
import Form from '~/components/Form'
import { createServerFn } from '@tanstack/react-start'
import { createFileRoute } from '@tanstack/react-router'
import { getSignedUrl } from '@aws-sdk/s3-request-presigner'
import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3'

And install the npm packages.

npm install @aws-sdk/client-s3 @aws-sdk/s3-request-presigner

Head over to the local TanStack Start app in your browser, http://localhost:3000 and try uploading an image. You should see it upload and then download the image.

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5. Deploy your app

Now let’s deploy your app to AWS.

npx sst deploy --stage production

You can use any stage name here but it’s good to create a new stage for production.

Congrats! Your app should now be live!

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Connect the console

As a next step, you can setup the SST Console to git push to deploy your app and view logs from it.

You can create a free account and connect it to your AWS account.