diff options
Diffstat (limited to 'packages/integrations/react/static-html.js')
-rw-r--r-- | packages/integrations/react/static-html.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/packages/integrations/react/static-html.js b/packages/integrations/react/static-html.js new file mode 100644 index 000000000..e319a40c7 --- /dev/null +++ b/packages/integrations/react/static-html.js @@ -0,0 +1,29 @@ +import { createElement as h } from 'react'; + +/** + * Astro passes `children` as a string of HTML, so we need + * a wrapper `div` to render that content as VNodes. + * + * As a bonus, we can signal to React that this subtree is + * entirely static and will never change via `shouldComponentUpdate`. + */ +const StaticHtml = ({ value, name, hydrate = true }) => { + if (!value) return null; + const tagName = hydrate ? 'astro-slot' : 'astro-static-slot'; + return h(tagName, { + name, + suppressHydrationWarning: true, + dangerouslySetInnerHTML: { __html: value }, + }); +}; + +/** + * This tells React to opt-out of re-rendering this subtree, + * In addition to being a performance optimization, + * this also allows other frameworks to attach to `children`. + * + * See https://preactjs.com/guide/v8/external-dom-mutations + */ +StaticHtml.shouldComponentUpdate = () => false; + +export default StaticHtml; |