Angular on AWS with SST

Create and deploy an Angular app to AWS with SST.

We are going to create an Angular 18 SPA, add an S3 Bucket for file uploads, and deploy it to AWS using SST.

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

1. Create a project

Let’s start by creating our project.

npm install -g @angular/cli
ng new aws-angular
cd aws-angular

We are picking CSS for styles, and not using SSR.

Init SST

Now let’s initialize SST in our app.

npx sst@latest init

This’ll create a sst.config.ts file in your project root.

2. Add an S3 Bucket

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

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

Add this above the StaticSite component.

We are going to upload a file to this bucket using a pre-signed URL. This’ll let us upload it directly to our bucket.

3. Add an API

Let’s create a simple API to generate that URL. Add this below the Bucket component.

const pre = new sst.aws.Function("MyFunction", {
  url: true,
  link: [bucket],
  handler: "functions/presigned.handler",
});

We are linking our bucket to this function.

Pass the API URL

Now, pass the API URL to our Angular app. Add this below the build prop in our StaticSite component.

environment: {
  NG_APP_PRESIGNED_API: pre.url
}

To load this in our Angular app, we’ll use the @ngx-env/builder package.

ng add @ngx-env/builder

Start dev mode

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

npx sst dev

Once complete, click on MyWeb in the sidebar and go to your Angular app in your browser. Typically on http://localhost:4200.

3. Create an upload form

Let’s create a component to do the file upload. Add the following to src/app/file-upload.component.ts.

import { Component, inject } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { FormsModule } from '@angular/forms';

@Component({
  selector: 'app-file-upload',
  standalone: true,
  imports: [FormsModule],
  template: `
    <form (ngSubmit)="onSubmit($event)">
      <input type="file" name="file">
      <button type="submit">Upload</button>
    </form>
  `,
})
export class FileUploadComponent {
  private http = inject(HttpClient);

  presignedApi = import.meta.env['NG_APP_PRESIGNED_API'];

  async onSubmit(event: Event): Promise<void> {
    const file = (event.target as HTMLFormElement)['file'].files?.[0]!;

    this.http.get(this.presignedApi, { responseType: 'text' }).subscribe({
      next: async (url: string) => {
        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];
      },
    });
  }
}

This is getting the pre-signed API URL from the environment. Making a request to it to get the pre-signed URL and then uploading our file to it.

Let’s add some styles below the template prop.

styles: [`
  form {
    color: white;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #23262d;
    background-image: none;
    background-size: 400%;
    border-radius: 0.6rem;
    background-position: 100%;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  }
  button {
    appearance: none;
    border: 0;
    font-weight: 500;
    border-radius: 5px;
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    background-color: white;
    color: black;
  }
  button:active:enabled {
    background-color: #EEE;
  }
`]

To make HTTP fetch requests we need to add the provider to our Angular app config. Add the following to the providers list in src/app/app.config.ts.

provideHttpClient(withFetch())

And import it at the top.

import { provideHttpClient, withFetch } from '@angular/common/http';

Let’s add this to our app. Replace the src/app/app.component.ts file with.

import { Component } from '@angular/core';
import { RouterOutlet } from '@angular/router';
import { FileUploadComponent } from './file-upload.component';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [RouterOutlet, FileUploadComponent],
  template: `
    <main>
      <app-file-upload></app-file-upload>
    </main>
    <router-outlet></router-outlet>
  `,
  styles: [`
    main {
      margin: auto;
      padding: 1.5rem;
      max-width: 60ch;
    }
  `],
})
export class AppComponent { }

4. Generate a pre-signed URL

Let’s implement the API that generates the pre-signed URL. Create a functions/presigned.ts file with the following.

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

export async function handler() {
  const command = new PutObjectCommand({
    Key: crypto.randomUUID(),
    Bucket: Resource.MyBucket.name,
  });

  return {
    statusCode: 200,
    body: await getSignedUrl(new S3Client({}), command),
  };
}

And install the npm packages.

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

Head over to the local Angular app in your browser, http://localhost:4200 and try uploading an image. You should see it upload and then download the image.

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.

Connect the console

As a next step, you can setup the SST Console to git push to deploy your app and monitor it for any issues.

SST Console Autodeploy

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