perf(compiler-sfc): improve asset url trasnform efficiency

packages/compiler-sfc/src/templateTransformAssetUrl.ts

@@ -81,15 +81,22 @@ export const transformAssetUrl: NodeTransform = (
   options: AssetURLOptions = defaultAssetUrlOptions
 ) => {
   if (node.type === NodeTypes.ELEMENT) {
+    if (!node.props.length) {
+      return
+    }
+
     const tags = options.tags || defaultAssetUrlOptions.tags
-    for (const tag in tags) {
-      if ((tag === '*' || node.tag === tag) && node.props.length) {
-        const attributes = tags[tag]
-        attributes.forEach(name => {
+    const attrs = tags[node.tag]
+    const wildCardAttrs = tags['*']
+    if (!attrs && !wildCardAttrs) {
+      return
+    }
+
+    const assetAttrs = (attrs || []).concat(wildCardAttrs || [])
     node.props.forEach((attr, index) => {
       if (
         attr.type !== NodeTypes.ATTRIBUTE ||
-              attr.name !== name ||
+        !assetAttrs.includes(attr.name) ||
         !attr.value ||
         (!options.includeAbsolute && !isRelativeUrl(attr.value.content))
       ) {
@@ -97,7 +104,6 @@ export const transformAssetUrl: NodeTransform = (
       }
 
       const url = parseUrl(attr.value.content)
-
       if (options.base) {
         // explicit base - directly rewrite the url into absolute url
         // does not apply to absolute urls or urls that start with `@`
@@ -119,24 +125,16 @@ export const transformAssetUrl: NodeTransform = (
       // otherwise, transform the url into an import.
       // this assumes a bundler will resolve the import into the correct
       // absolute url (e.g. webpack file-loader)
-            const exp = getImportsExpressionExp(
-              url.path,
-              url.hash,
-              attr.loc,
-              context
-            )
+      const exp = getImportsExpressionExp(url.path, url.hash, attr.loc, context)
       node.props[index] = {
         type: NodeTypes.DIRECTIVE,
         name: 'bind',
-              arg: createSimpleExpression(name, true, attr.loc),
+        arg: createSimpleExpression(attr.name, true, attr.loc),
         exp,
         modifiers: [],
         loc: attr.loc
       }
     })
-        })
-      }
-    }
   }
 }