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src/compiler/sys.ts

@@ -500,6 +500,9 @@ namespace ts {
                     for (const current of files) {
                         const name = combinePaths(path, current);
                         if (!contains(exclude, getCanonicalPath(name))) {
+                            // fs.statSync would throw an exception if the file is a symlink
+                            // whose linked file doesn't exist. fs.lstatSync would return a stat
+                            // object for the symlink file itself in this case
                             const stat = _fs.lstatSync(name);
                             if (stat.isFile()) {
                                 if (!extension || fileExtensionIs(name, extension)) {