Improve nested and `client:only` hydration (#3455)

* wip: fix nested islands

* fix: improve hydration for dynamic content

* chore: fix bundle-size script for new files

* chore: allow-list client:* directive files

* fix(#3362): fix client:only behavior for React, Vue, Solid

* test: add client-only e2e test

* chore: update lockfile

* test: fix e2e tests

* test: add framework nesting e2e tests

* Update packages/astro/src/runtime/client/events.ts

Co-authored-by: Matthew Phillips <matthew@skypack.dev>

* chore: add changeset

* fix(preact): ignore hydrate roots

* chore: remove `ssr` check in integrations

* Revert "chore: remove `ssr` check in integrations"

This reverts commit ba27eaae5514701f4b7bb6259f682fe82821a23d.

* chore: add changeset

Co-authored-by: Matthew Phillips <matthew@skypack.dev>

1 files changed, 11 insertions, 4 deletions

diff --git a/packages/integrations/vue/client.js b/packages/integrations/vue/client.js
index 0ba4e8106..4832a9847 100644
--- a/packages/integrations/vue/client.js
+++ b/packages/integrations/vue/client.js
@@ -1,14 +1,21 @@
-import { h, createSSRApp } from 'vue';
+import { h, createSSRApp, createApp } from 'vue';
 import StaticHtml from './static-html.js';
 
-export default (element) => (Component, props, children) => {
+export default (element) => (Component, props, children, { client }) => {
 	delete props['class'];
+	if (!element.hasAttribute('ssr')) return;
+
 	// Expose name on host component for Vue devtools
 	const name = Component.name ? `${Component.name} Host` : undefined;
 	const slots = {};
 	if (children != null) {
 		slots.default = () => h(StaticHtml, { value: children });
 	}
-	const app = createSSRApp({ name, render: () => h(Component, props, slots) });
-	app.mount(element, true);
+	if (client === 'only') {
+		const app = createApp({ name, render: () => h(Component, props, slots) });
+		app.mount(element, false);
+	} else {
+		const app = createSSRApp({ name, render: () => h(Component, props, slots) });
+		app.mount(element, true);
+	}
 };