perf(core): check files before interacting with them

babel · Apr 2, 2021 · 67b6e93 · 67b6e93
1 parent 86c44ba
commit 67b6e93
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Showing 2 changed files with 3 additions and 6 deletions.
diff --git a/packages/babel-core/src/config/files/utils.ts b/packages/babel-core/src/config/files/utils.ts
@@ -23,6 +23,8 @@ export function makeStaticFileCache<T>(
 }
 
 function fileMtime(filepath: string): number | null {
+  if (!nodeFs.existsSync(filepath)) return null;
+
   try {
     return +nodeFs.statSync(filepath).mtime;
   } catch (e) {

diff --git a/packages/babel-core/src/gensync-utils/fs.ts b/packages/babel-core/src/gensync-utils/fs.ts
@@ -10,12 +10,7 @@ export const readFile = gensync<(filepath: string, encoding: "utf8") => string>(
 
 export const exists = gensync<(filepath: string) => boolean>({
   sync(path) {
-    try {
-      fs.accessSync(path);
-      return true;
-    } catch {
-      return false;
-    }
+    return fs.existsSync(path);
   },
   errback: (path, cb) => fs.access(path, undefined, err => cb(null, !err)),
 });