chore(perf): replace startsWith with === (#11124)

packages/compiler-sfc/src/script/resolveType.ts

@@ -912,7 +912,7 @@ function importSourceToScope(
 
       const filename = osSpecificJoinFn(dirname(scope.filename), source)
       resolved = resolveExt(filename, fs)
-    } else if (source.startsWith('.')) {
+    } else if (source[0] === '.') {
       // relative import - fast path
       const filename = joinPaths(dirname(scope.filename), source)
       resolved = resolveExt(filename, fs)

scripts/size-report.ts

@@ -31,8 +31,7 @@ async function run() {
 }
 
 async function renderFiles() {
-  const filterFiles = (files: string[]) =>
-    files.filter(file => !file.startsWith('_'))
+  const filterFiles = (files: string[]) => files.filter(file => file[0] !== '_')
 
   const curr = filterFiles(await readdir(currDir))
   const prev = existsSync(prevDir) ? filterFiles(await readdir(prevDir)) : []