wip(ssr): element scopeId

packages/compiler-ssr/src/index.ts

@@ -31,6 +31,7 @@ export function compile(
     // apply DOM-specific parsing options
     ...parserOptions,
     ssr: true,
+    scopeId: options.mode === 'function' ? null : options.scopeId,
     // always prefix since compiler-ssr doesn't have size concern
     prefixIdentifiers: true,
     // disalbe optimizations that are unnecessary for ssr

packages/compiler-ssr/src/transforms/ssrTransformElement.ts

@@ -246,6 +246,10 @@ export const ssrTransformElement: NodeTransform = (node, context) => {
         removeStaticBinding(openTag, 'class')
       }
 
+      if (context.scopeId) {
+        openTag.push(` ${context.scopeId}`)
+      }
+
       openTag.push(`>`)
       if (rawChildren) {
         openTag.push(rawChildren)