Handle file paths > MAX_PATH

yarnpkg · Apr 11, 2017 · 0bde4ef · 0bde4ef
1 parent b2ef6ce
commit 0bde4ef
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/util/fs.js b/src/util/fs.js
@@ -484,12 +484,14 @@ if (process.platform === 'win32') {
     'CopyFileW': ['uint32', [wchar_t.string, wchar_t.string, 'uint32']],
   });
 
+  const longFileNamePrefix = "\\\\?\\";
+
   copyFile = (reporter: Reporter, data: CopyFileAction) => new Promise((resolve, reject) => {
     reporter.verbose(reporter.lang('verboseFileCopy', data.src, data.dest));
 
-    kernel32.CopyFileW.async(data.src, data.dest, 0, function(err, res) {
+    kernel32.CopyFileW.async(longFileNamePrefix + data.src, longFileNamePrefix + data.dest, 0, function(err, res) {
       if (err || res === 0) {
-        reject();
+        reject(new Error("CopyFileW failed"));
       }
 
       resolve();