From de45daaef8de652e771306f4b8249d0f971be063 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Mon, 5 Oct 2015 16:46:45 +0100
Subject: [PATCH] don't execute the callback inside of a try-catch as if the
 callback errors then it'll emit the error back to the callback

---
 packages/babel-core/src/api/node.js | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/packages/babel-core/src/api/node.js b/packages/babel-core/src/api/node.js
index 0aadff0514..af2713fef8 100644
--- a/packages/babel-core/src/api/node.js
+++ b/packages/babel-core/src/api/node.js
@@ -34,17 +34,21 @@ export function transformFile(filename: string, opts?: Object, callback: Functio
   opts.filename = filename;
 
   fs.readFile(filename, function (err, code) {
-    if (err) return callback(err);
-
     let result;
 
-    try {
-      result = transform(code, opts);
-    } catch (err) {
-      return callback(err);
+    if (!err) {
+      try {
+        result = transform(code, opts);
+      } catch (_err) {
+        err = _err;
+      }
     }
 
-    callback(null, result);
+    if (err) {
+      callback(err);
+    } else {
+      callback(null, result);
+    }
   });
 }