gulpTranspile.js

gulp.task('transpile', function() {
	return gulp.watch('**/**-es6.js', function(obj){
		if (obj.type === 'changed') {
			gulp.src(obj.path, { base: './' })
				.pipe(plumber({
					errorHandler: function (error) {
						//babel error - dev typed in in valid code
						if (error.fileName) {
							var fileParts = error.fileName.split('\\');
							try {
								notify.onError(error.name + ' in ' + fileParts[fileParts.length - 1])(error);
							} catch(e) {} //gulp-notify may break if not run in Win 8
							console.log(error.name + ' in ' + error.fileName);
						} else{
							notify.onError('Oh snap, file system error! :(')(error);
						}

						console.log(error.message);
						this.emit('end');
					}
				}))
				.pipe(babel({ presets: ['babel-preset-es2015'], plugins: ['syntax-decorators', 'transform-decorators'] }))
				.pipe(rename(function (path) {
					path.basename = path.basename.replace(/-es6$/, '');
				}))
				.pipe(gulp.dest(''))
				.pipe(gprint(function(filePath){ return "File processed: " + filePath; }));
		}
	});
});