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feat(vercel): streaming #8879

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merged 8 commits into from
Nov 7, 2023
Merged

feat(vercel): streaming #8879

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feat(vercel): streaming
lilnasy Oct 20, 2023
fbc595b
add test
lilnasy Oct 30, 2023
441ae06
add changeset
lilnasy Oct 30, 2023
3a03091
add docs
lilnasy Oct 30, 2023
463f157
fix unrelated test that never ran until this PR for some reason
lilnasy Oct 30, 2023
fe28750
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lilnasy Nov 1, 2023
d23967a
enabled without configuration
lilnasy Nov 1, 2023
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major -> minor
lilnasy Nov 6, 2023
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7 changes: 7 additions & 0 deletions .changeset/tricky-clocks-end.md
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---
'@astrojs/vercel': major
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---

The Vercel adapter now streams responses!

This brings better performance to your visitors by showing them content as it is rendered. The browser can also start loading the required stylesheets and scripts much sooner, which ultimately results in faster full page loads.
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@sarah11918 sarah11918 Nov 6, 2023 •
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Suggested change
This brings better performance to your visitors by showing them content as it is rendered. The browser can also start loading the required stylesheets and scripts much sooner, which ultimately results in faster full page loads.
This brings better performance to your visitors by showing them content as it is rendered. The browser can also start loading the required stylesheets and scripts much sooner, which ultimately results in faster full page loads.
Read more about [HTML streaming](https://docs.astro.build/en/guides/server-side-rendering/#html-streaming) in the Astro docs.

Up to you! Since there are warnings involved with streaming, it couldn't hurt to send to the new docs. BUT, since this doesn't break anything, not really needed anymore. (Was added when I was afraid that enabling this changed the Response headers behaviour)

NOTE: Depending on how quickly this merges, I have a PR that would add the anchor link above but currently the URL is only #streaming. If this is to merge soon, I can pre-emptively update existing docs to that link now, even before the new page is published.

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Withdrawing this suggestion! With that docs page about to change, it's maybe a little too disruptive at this exact moment.

3 changes: 2 additions & 1 deletion packages/integrations/vercel/src/serverless/adapter.ts
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Expand Up @@ -341,7 +341,7 @@ interface CreateFunctionFolderArgs {
NTF_CACHE: any;
includeFiles: URL[];
excludeFiles?: string[];
maxDuration?: number;
maxDuration: number | undefined;
}

async function createFunctionFolder({
Expand Down Expand Up @@ -381,6 +381,7 @@ async function createFunctionFolder({
handler,
launcherType: 'Nodejs',
maxDuration,
supportsResponseStreaming: true,
});
}

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7 changes: 7 additions & 0 deletions packages/integrations/vercel/test/fixtures/streaming/astro.config.mjs
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import { defineConfig } from 'astro/config';
import vercel from '@astrojs/vercel/serverless';

export default defineConfig({
output: "server",
adapter: vercel()
});
10 changes: 10 additions & 0 deletions packages/integrations/vercel/test/fixtures/streaming/package.json
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{
"name": "@test/vercel-streaming",
"version": "0.0.0",
"private": true,
"dependencies": {
"@astrojs/vercel": "workspace:*",
"astro": "workspace:*"
}
}

8 changes: 8 additions & 0 deletions packages/integrations/vercel/test/fixtures/streaming/src/pages/one.astro
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<html>
<head>
<title>One</title>
</head>
<body>
<h1>One</h1>
</body>
</html>
8 changes: 8 additions & 0 deletions packages/integrations/vercel/test/fixtures/streaming/src/pages/two.astro
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<html>
<head>
<title>Two</title>
</head>
<body>
<h1>Two</h1>
</body>
</html>
15 changes: 8 additions & 7 deletions packages/integrations/vercel/test/static-assets.test.js
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Expand Up @@ -7,9 +7,10 @@ describe('Static Assets', () => {

const VALID_CACHE_CONTROL = 'public, max-age=31536000, immutable';

async function build({ adapter, assets }) {
async function build({ adapter, assets, output }) {
fixture = await loadFixture({
root: './fixtures/static-assets/',
output,
adapter,
build: {
assets,
Expand Down Expand Up @@ -38,31 +39,31 @@ describe('Static Assets', () => {
}

describe('static adapter', async () => {
const adapter = await import('@astrojs/vercel/static');
const { default: vercel } = await import('@astrojs/vercel/static');

it('has cache control', async () => {
await build({ adapter });
await build({ adapter: vercel() });
checkValidCacheControl();
});

it('has cache control other assets', async () => {
const assets = '_foo';
await build({ adapter, assets });
await build({ adapter: vercel(), assets });
checkValidCacheControl(assets);
});
});

describe('serverless adapter', async () => {
const adapter = await import('@astrojs/vercel/serverless');
const { default: vercel } = await import('@astrojs/vercel/serverless');

it('has cache control', async () => {
await build({ adapter });
await build({ output: "server", adapter: vercel() });
checkValidCacheControl();
});

it('has cache control other assets', async () => {
const assets = '_foo';
await build({ adapter, assets });
await build({ output: "server", adapter: vercel(), assets });
checkValidCacheControl(assets);
});
});
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21 changes: 21 additions & 0 deletions packages/integrations/vercel/test/streaming.test.js
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import { loadFixture } from './test-utils.js';
import { expect } from 'chai';

describe('maxDuration', () => {
/** @type {import('./test-utils.js').Fixture} */
let fixture;

before(async () => {
fixture = await loadFixture({
root: './fixtures/streaming/',
});
await fixture.build();
});

it('makes it to vercel function configuration', async () => {
const vcConfig = JSON.parse(
await fixture.readFile('../.vercel/output/functions/render.func/.vc-config.json')
);
expect(vcConfig).to.deep.include({ supportsResponseStreaming: true });
});
});
9 changes: 9 additions & 0 deletions pnpm-lock.yaml
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