feat(@astrojs/node): add graceful shutdown to standalone mode

[WhatCats]

Overview

Adds graceful shutdown support to the Node.js standalone adapter. When the process receives SIGTERM or SIGINT, the server stops accepting new connections and waits for all in-flight requests to complete before exiting.

What's new

• SIGTERM / SIGINT handling — the server closes gracefully on either signal
• Force-destroy timeout — if connections don't drain within the timeout, remaining connections are force-destroyed. Default is 10s, configurable via ASTRO_NODE_GRACEFUL_SHUTDOWN_TIMEOUT (milliseconds)
• Opt-out — set ASTRO_NODE_GRACEFUL_SHUTDOWN=disabled to skip signal handler registration entirely

Testing

Adds an integration test suite (graceful-shutdown.test.ts) covering:

• No new connections accepted after server.close()
• SIGTERM and SIGINT each independently stop the server (SIGINT tested on a fresh server)
• Multiple concurrent in-flight requests all complete before closed() resolves
• Force-destroy fires after timeout when a connection is permanently stalled

Docs

Docs have not been updated yet.

[changeset-bot]

🦋 Changeset detected

Latest commit: 415bd9f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 34 packages

Name	Type
@astrojs/node	Minor
@e2e/actions-blog	Patch
@e2e/actions-react-19	Patch
@e2e/csp-server-islands	Patch
@e2e/i18n	Patch
@e2e/server-islands-key	Patch
@e2e/server-islands	Patch
@e2e/view-transitions	Patch
@test/client-address-node	Patch
@test/live-loaders	Patch
@test/request-signal	Patch
@test/static-build-ssr	Patch
@test/nodejs-api-route	Patch
@test/nodejs-badurls	Patch
@test/nodejs-encoded	Patch
@test/nodejs-errors	Patch
@test/nodejs-graceful-shutdown	Patch
@test/nodejs-headers	Patch
@test/nodejs-image	Patch
@test/locals	Patch
@test/node-middleware	Patch
@test/nodejs-prerender-404-500	Patch
@test/nodejs-prerender	Patch
@test/nodejs-prerendered-error-page-fetch	Patch
@test/nodejs-preview-headers	Patch
@test/redirects	Patch
@test/node-sessions	Patch
@test/ssr-assets-middleware	Patch
@test/node-static-headers	Patch
@test/node-trailingslash	Patch
@test/url	Patch
@test/well-known-locations	Patch
@test/sitemap-ssr	Patch
astro-benchmark	Patch

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