docs(ssr): explain server-only module reloads (fix #19114) - #23235
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August 11, 2026 16:11
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Pull request overview
Updates the SSR guide to clarify that changes to SSR-only modules no longer trigger a browser reload by default in custom SSR middleware setups, and provides a hotUpdate-based plugin example to restore that behavior when needed.
Changes:
- Adds a new tip section explaining SSR-only module update behavior and how it differs from framework integrations.
- Introduces an Environment API
hotUpdateexample plugin to trigger a client full reload for SSR-only changes. - Documents where to wire the plugin into the existing custom SSR server example and links to the
hotUpdatehook docs.
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| for (const mod of modules) { | ||
| if (mod.id == null) continue | ||
| const clientModule = | ||
| server.environments.client.moduleGraph.getModuleById(mod.id) | ||
| if (clientModule != null) continue |
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Description
The recommended custom SSR setup did not explain that updates to SSR-only modules no longer reload the browser by default.
This update:
hotUpdateexampleFixes #19114
Tests
pnpm exec oxfmt --check docs/guide/ssr.mdpnpm docs-buildThis is a documentation-only change, so no runtime test was added. The VitePress build validates the page and its typed code example.