message: fix(compiler): make watch mode work on windows
  Fixes
  PR Close
diff: @@ -129,6 +129,7 @@ export function performWatchCompilation(host: PerformWatchHost):
  return {close, ready: cb => readyPromise.then(cb), firstCompileResult};
  function cacheEntry(fileName: string): CacheEntry {
  + fileName = path.normalize(fileName);
  let entry = fileCache.get(fileName);
  if (!entry) {
  entry = {};
  @@ -249,7 +250,7 @@ export function performWatchCompilation(host: PerformWatchHost):
  if (event === FileChangeEvent.CreateDeleteDir) {
  fileCache.clear();
  } else {
  - fileCache.delete(fileName);
  + fileCache.delete(path.normalize(fileName));
  }
  if (!ingoreFilesForWatch.has(path.normalize(fileName))) {
  