feat(typescript): adding typescript to protractor

Converting a 3 files over to typescript.

Adding an `npm prepublish` step that will use gulp to download the typings, transpile the files with tscto the built/ directory and copy the rest of the javascript files from lib/ to the built/ folder.

Also adding scripts to package.json for `npm run tsc` and `npm run tsc:w` for transpiling help.

Author: cnishina

.clang-format

@@ -0,0 +1,3 @@
+Language:        JavaScript
+BasedOnStyle:    Google
+ColumnLimit:     80

.gitignore

@@ -12,3 +12,6 @@ xmloutput*
 npm-debug.log
 
 *.swp
+
+typings/
+built/

gulpfile.js

@@ -1,39 +1,59 @@
 'use strict';
 
 var gulp = require('gulp');
+var clangFormat = require('clang-format');
+var gulpFormat = require('gulp-clang-format');
 var runSequence = require('run-sequence');
-var spawnSync = require('child_process').spawnSync;
+var spawn = require('child_process').spawn;
+
+var runSpawn = function(done, task, opt_arg) {
+  var child = spawn(task, opt_arg);
+  child.stdout.on('data', function(data) {
+    console.log(data.toString());
+  });
+  child.stderr.on('data', (data) => {
+    console.log(data.toString());
+  });
+  child.on('close', function(code) {
+    done();
+  });
+}
 
 gulp.task('built:copy', function() {
-  var srcFiles = ['lib/**/*'];
-  var dist = 'built/';
-  return gulp.src(srcFiles).pipe(gulp.dest(dist));
+  return gulp.src(['lib/**/*','!lib/**/*.ts'])
+      .pipe(gulp.dest('built/'));
+});
+
+gulp.task('webdriver:update', function(done) {
+  runSpawn(done, 'bin/webdriver-manager', ['update']);
+});
+
+gulp.task('jslint', function(done) {
+  runSpawn(done, './node_modules/.bin/jshint', ['lib','spec', 'scripts']);
+});
+
+gulp.task('clang', function(done) {
+  return gulp.src(['lib/**/*.ts'])
+      .pipe(gulpFormat.checkFormat('file', clangFormat))
+      .on('warning', function(e) {
+    console.log(e);
+  });
+  done();
+});
+
+gulp.task('typings', function(done) {
+  runSpawn(done, 'node_modules/.bin/typings', ['install']);
 });
 
-gulp.task('webdriver:update', function() {
-  var child = spawnSync('bin/webdriver-manager', ['update']);
-  if (child.stdout != null) {
-    console.log(child.stdout.toString());
-  }
-  if (child.status !== 0) {
-    throw new Error('webdriver-manager update: child error');
-  }
+gulp.task('tsc', function(done) {
+  runSpawn(done, 'node_modules/typescript/bin/tsc');
 });
 
-gulp.task('jslint', function() {
-  var child = spawnSync('./node_modules/.bin/jshint', ['lib','spec', 'scripts']);
-  if (child != null && child.stdout != null ) {
-    console.log(child.stdout.toString());
-  }
-  if (child.status !== 0) {
-    throw new Error('jslint: child error');
-  }
+gulp.task('prepublish', function(done) {
+  runSequence(['typings', 'jslint', 'clang'],'tsc', 'built:copy', done);
 });
 
-gulp.task('pretest', function() {
+gulp.task('pretest', function(done) {
   runSequence(
-    ['webdriver:update', 'jslint'],
-    'built:copy'
-  );
+    ['webdriver:update', 'typings', 'jslint', 'clang'], 'tsc', 'built:copy', done);
 });
-gulp.task('prepublish', ['built:copy']);