Adds a changeset for hydrationPolyfills support

1 files changed, 18 insertions, 0 deletions

diff --git a/.changeset/brave-mails-repeat.md b/.changeset/brave-mails-repeat.md
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+---
+'astro': patch
+---
+
+Adds support for `hydrationPolyfills` in renderers
+
+Renderers can not specify polyfills that must run before the component code runs for hydration:
+
+```js
+export default {
+  name: '@matthewp/my-renderer',
+  server: './server.js',
+  client: './client.js',
+  hydrationPolyfills: ['./my-polyfill.js']
+}
+```
+
+These will still wait for hydration to occur, but will run before the component script does.