Update LKG.

Author: DanielRosenwasser

lib/tsc.js

@@ -1044,9 +1044,6 @@ var ts;
                 readFile: readFile,
                 writeFile: writeFile,
                 watchFile: function (fileName, callback) {
-                    if (isNode4OrLater()) {
-                        return _fs.watch(fileName, function (eventName, relativeFileName) { return callback(fileName); });
-                    }
                     var watchedFile = watchedFileSet.addFile(fileName, callback);
                     return {
                         close: function () { return watchedFileSet.removeFile(watchedFile); }

lib/tsserver.js

@@ -1044,9 +1044,6 @@ var ts;
                 readFile: readFile,
                 writeFile: writeFile,
                 watchFile: function (fileName, callback) {
-                    if (isNode4OrLater()) {
-                        return _fs.watch(fileName, function (eventName, relativeFileName) { return callback(fileName); });
-                    }
                     var watchedFile = watchedFileSet.addFile(fileName, callback);
                     return {
                         close: function () { return watchedFileSet.removeFile(watchedFile); }

lib/typescript.js

@@ -1947,10 +1947,6 @@ var ts;
                     // and is more efficient than `fs.watchFile` (ref: https://github.com/nodejs/node/pull/2649
                     // and https://github.com/Microsoft/TypeScript/issues/4643), therefore
                     // if the current node.js version is newer than 4, use `fs.watch` instead.
-                    if (isNode4OrLater()) {
-                        // Note: in node the callback of fs.watch is given only the relative file name as a parameter
-                        return _fs.watch(fileName, function (eventName, relativeFileName) { return callback(fileName); });
-                    }
                     var watchedFile = watchedFileSet.addFile(fileName, callback);
                     return {
                         close: function () { return watchedFileSet.removeFile(watchedFile); }

lib/typescriptServices.js

@@ -1947,10 +1947,6 @@ var ts;
                     // and is more efficient than `fs.watchFile` (ref: https://github.com/nodejs/node/pull/2649
                     // and https://github.com/Microsoft/TypeScript/issues/4643), therefore
                     // if the current node.js version is newer than 4, use `fs.watch` instead.
-                    if (isNode4OrLater()) {
-                        // Note: in node the callback of fs.watch is given only the relative file name as a parameter
-                        return _fs.watch(fileName, function (eventName, relativeFileName) { return callback(fileName); });
-                    }
                     var watchedFile = watchedFileSet.addFile(fileName, callback);
                     return {
                         close: function () { return watchedFileSet.removeFile(watchedFile); }