Merge pull request #194 from tansongyang/windows-incremental-compilation

Fix Windows path issue

Author: chriskrycho

lib/utilities/compile.js

@@ -73,7 +73,6 @@ function buildWatchHooks(sys, callbacks) {
       let watcher = chokidar.watch(dir, { ignored, ignoreInitial: true });
 
       watcher.on('all', (type, path) => {
-        path = path.replace(/\\/g, '/'); // Normalize Windows
         if (type === 'add' && path.endsWith('.ts')) {
           fileChanged(type, path);
           callback(path);