2016 W3C Conference #4 : ANGULAR + ES6

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한장현
han41858@gmail.com
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한장현 (Janghyun Han)
2

ngular
1.6.0-rc.2 safety-insurance
4

• 마술 같은 2-way binding
• HTML 표준을 기반으로 기능 확장
• 체계적인 컴포넌트, Web Component로 가는 길
• Front-end 전체를 커버하는 프레임워크
• Google 에서 관리, 개선
• 풍부한 사용자 삽질 경험
Angular를 쓰는 이유
5

Class, inheritance
import/export
Arrow function
Promise
ECMAScript 2015
6

• 간단해지는 코드, syntax sugar
• 클래스, 상속, 모듈 구성 ⇒ 아키텍처 진화
• 브라우저들 지원 계속
• 결국엔 표준, transpiler는 거쳐갈 뿐
ES6를 쓰는 이유
7

ES6ES5
script src
<script src="bundle.js"></script>
"devDependencies": {
"angular": "^1.5.8",
"babel-cli": "^6.18.0",
"babel-loader": "^6.2.7",
"babel-preset-es2015": "^6.18.0",
"webpack": "^1.13.3"
}
<script src="angular.js"></script>
<script src="index.js"></script>
"angular": "^1.5.8"
}
9

index.js
ES6ES5
(function () {
var ngApp = angular.module('angular1es5', []);
})();
import angular from 'angular';
(() => {
const ngApp = angular.module('angular1es6', []);
})();
10

Webpack
// this is ES5
var webpack = require('webpack');
module.exports = {
entry : [
'./index.js'
],
output : {
filename : 'build/bundle.js',
sourceMapFilename: '[name].map'
},
module : {
loaders : [
{
test : /.js$/,
loader : 'babel?presets[]=es2015
exclude : /node_modules/
},
{
test : /.pug$/,
loader : 'pug-loader',
exclude : /node_modules/
}
]
},
plugins : [
// new webpack.optimize.UglifyJsPlugin({minimize: true})
]
};
webpack.config.js
"angular": "^1.5.8",
"angular-route": "^1.5.8",
"babel-cli": "^6.18.0",
"babel-loader": "^6.2.7",
"babel-preset-es2015": "^6.18.0",
"file-loader": "^0.9.0",
"pug": "^2.0.0-beta6",
"pug-loader": "^2.3.0",
"webpack": "^1.13.3",
"webpack-dev-server": "^1.16.2"
}
package.json
11

export default class HomeCtrl {
constructor () {
console.log('HomeCtrl.constructor()');
}
}
/view/homeCtrl.js
p this is home
/view/home.pug
import angular from 'angular';
import ngRoute from 'angular-route';
import HomeCtrl from './view/homeCtrl';
const main = () => {
console.log('main()');
const ngApp = angular.module('angular1es6', ['ngRoute']);
ngApp.config(($routeProvider, $locationProvider) => {
console.log('this is angular config');
$routeProvider
.when('/', {
template : require('./view/home.pug'),
controller : 'HomeCtrl',
controllerAs : 'Ctrl'
})
.otherwise({
redirectTo : '/'
});
// need to angular.js routing
$locationProvider.html5Mode({
enabled : true,
requireBase : false
});
});
ngApp.controller('HomeCtrl', HomeCtrl);
};
main();
index.js + ngRoute
12

ngApp.directive('CustomDirective', () => new CustomDirective);
ngApp.filter('groupBy', GroupBy);
ngApp.service('CustomSvc', CustomSvc);
ngApp.controller('CustomCtrl', CustomCtrl);
Angular Components
ngApp.directive('CustomDirective', CustomDirective);
ngApp.filter('groupBy', GroupBy);
ngApp.service('CustomSvc', CustomSvc);
ngApp.controller('CustomCtrl', CustomCtrl);
function
Class
new Class
14

Filter
ES6ES5
ngApp.filter('uppercase', uppercase);
function uppercase () {
return function (item) {
return item.toUpperCase();
};
}
<script src="uppercase.filter.js"></script>
const uppercase = () => {
return (input) => {
return input.toUpperCase();
};
};
export default uppercase;
import uppercase from './uppercase.filter';
ngApp.filter('uppercase', uppercase);
15

.ctrlRoot
p this is home ctrl
p {{ Ctrl.title }}
button(ng-click="Ctrl.select()") Select
constructor () {
this.title = 'this is title';
}
select () {
console.log('HomeCtrl.select()');
}
}
$routeProvider
.when('/', {
})
ngApp.controller('HomeCtrl', HomeCtrl);
function HomeCtrl ($scope) {
console.log('home controller');
$scope.title = 'this is title';
$scope.select = function () {
}
}
Controller
ES6ES5
.ctrlRoot
p this is home ctrl
p {{ title }}
button(ng-click="select()") Select
16

Service
ES6ES5
ngApp.service('myService', myService);
<script src="./view/myService.js"></script>
function myService () {
this.testFnc = function () {
console.log('myService.testFnc()');
};
return this;
}
export default class MyService {
constructor () {
console.log('MyService');
}
testFnc () {
console.log('MyService.testFnc()');
}
}
ngApp.service('MyService', MyService);
constructor (MyService) {
this.MyService = MyService;
}
select () {
this.MyService.testFnc();
}
}
static 있어야 할 것 같지만 없어야 함
17

ngApp.directive('myDirective', () => new MyDirective);
export default class MyDirective {
constructor () {
console.log('MyDirective.constructor()');
this.restrict = 'E';
this.template = '<p>message : {{ this.msg }}</p>';
this.scope = {
msg : '@'
};
}
link (scope) {
console.log(scope.msg);
}
}
ngApp.directive('myDirective', myDirective);
function myDirective () {
return {
restrict : 'E',
template : '<p>message : {{ msg }}</p>',
scope : {
msg : '@'
},
controller : function ($scope) {
console.log('myDirective.controller()');
console.log($scope.msg);
}
}
}
<script src="myDirective.js"></script>
Directive
ES6ES5
directive 등록할 때 () => new18

Directive vs. Component
const customInput = {
bindings : {
model : '='
},
template : '<input ng-model="$ctrl.model"></input>',
controller : function () {
this.$onInit = () => {
}
}
};
export default customInput;
ngApp.component('customInput', customInput);ngApp.directive('customInput', () => new customInput);
export default class customInput {
constructor () {
this.restrict = 'E';
this.scope = {
model : '='
};
this.template = '<input ng-model="model"></input>';
}
controller () {
}
}
20

static delete (param) {
const self = this;
return util.objValidate(param, {
userID : Constants.TYPE.EMAIL
}, Constants.ERROR.USER_CTRL.NO_PARAMETER, log, 'delete()')
.then(param => self.isExists(param))
.then(param => {
// delete records
return recordCtrl.deleteAll({
userID : param.userID
})
.then(() => {
log('remove records ok');
// param 자체를 다시 돌려주기 위해 Promise 필요
return Promise.resolve(param);
});
})
.then(param => {
// delete cards
return cardCtrl.deleteAll({
})
.then(() => {
log('remove cards ok');
});
})
.then(param => {
// delete assets
return assetCtrl.deleteAll({
})
.then(() => {
log('remove assets ok');
});
})
.then(param => {
// delete user
return User.remove({
})
.then(() => {
}, error => {
log(error);
return Promise.reject(new ERROR(Constants.ERROR.MONGOOSE.REMOVE_FAILED, log, 'delete()'));
});
})
.then(param => {
log(`delete ok : ${param.userID}`);
return Promise.resolve(true);
});
}
Promise
21

ngApp.config(($routeProvider, $locationProvider) => {
// include styles
require('./view/home.styl');
$routeProvider
.when('/', {
})
.otherwise({
redirectTo : '/'
});
});
배포 : webpack
import가 아니므로 require 22

Angular 1 + ES6 + BDD
= Hell
23

describe('homeCtrl.test', () => {
it('module import', () => {
expect(true).to.be.true;
});
});
λ karma start
(node:7564) DeprecationWarning: Using Buffer without `new` will soon stop working. Use `new Buffer()`, or preferably `Buffer.from()`,
`Buffer.allocUnsafe()` or `Buffer.alloc()` instead.
18 11 2016 02:53:45.852:INFO [framework.browserify]: bundle built
18 11 2016 02:53:45.941:INFO [karma]: Karma v1.3.0 server started at http://localhost:9876/
18 11 2016 02:53:45.941:INFO [launcher]: Launching browser Chrome with unlimited concurrency
18 11 2016 02:53:45.952:INFO [launcher]: Starting browser Chrome
18 11 2016 02:53:47.283:INFO [Chrome 54.0.2840 (Windows 10 0.0.0)]: Connected on socket /#AjAqCwTlrwmVmV_sAAAA with id
16857313
Chrome 54.0.2840 (Windows 10 0.0.0): Executed 1 of 1 SUCCESS (0.005 secs / 0.001 secs)
BDD 시작
24

λ karma start
(node:12196) DeprecationWarning: Using Buffer without `new` will soon stop working. Use `new Buffer()`, or preferably `Buffer.from()`, `Buffer.allocUnsafe()` or `Buffer.alloc()` instead.
18 11 2016 02:19:11.676:INFO [Chrome 54.0.2840 (Windows 10 0.0.0)]: Connected on socket /#sBpP4RL0XFZAwPtxAAAA with id 52822107
Chrome 54.0.2840 (Windows 10 0.0.0) ERROR
Uncaught SyntaxError: Unexpected token import
at test/homeCtrl.test.js:1
import HomeCtrl from '../view/homeCtrl';
describe('homeCtrl.test', () => {
it('module import', () => {
console.log(HomeCtrl);
expect(true).to.be.true;
expect(HomeCtrl).to.be.ok;
});
});
λ karma start
18 11 2016 02:31:25.657:INFO [Chrome 54.0.2840 (Windows 10 0.0.0)]: Connected on socket /#pvpyGrXqq2TZPTgmAAAA with id 30236974
LOG: class HomeCtrl { ... }
Chrome 54.0.2840 (Windows 10 0.0.0): Executed 1 of 1 SUCCESS (0.007 secs / 0.002 secs)
babel : node6
λ karma start
18 11 2016 02:58:38.729:INFO [launcher]: Launching browser PhantomJS with unlimited concurrency
18 11 2016 02:58:38.738:INFO [launcher]: Starting browser PhantomJS
18 11 2016 02:58:40.301:INFO [PhantomJS 2.1.1 (Windows 8 0.0.0)]: Connected on socket /#JeRwavdozVZCC8HJAAAA with id 75347319
LOG: function HomeCtrl(MyService) { ... }
PhantomJS 2.1.1 (Windows 8 0.0.0): Executed 1 of 1 SUCCESS (0.008 secs / 0.001 secs)
babel : es2015
ES6가 돌지 않는다…
+
25

var $httpBackend;
beforeEach(function () {
module('angular1es5');
inject(function (_$httpBackend_) {
$httpBackend = _$httpBackend_;
});
});
module 선언, injection 불가
ES6ES5
const $injector, $httpBackend;
beforeEach(() => {
$injector = angular.injector(['angular1es6']);
$httpBackend = $injector.get('$httpBackend');
});
Object is not a constructor (evaluating 'module('angular1es6')')
r:/temp/test/homeCtrl.test.js:15:9 <-
R:/temp/3871fde1c6cf6c302eeae7add18a3b02.browserify:22:9
26

ngMock vs. ngMockE2E
The ngMock module provides support to inject
and mock Angular services into unit tests. In
addition, ngMock also extends various core ng
services such that they can be inspected and
controlled in a synchronous manner within test
code.
The ngMockE2E is an angular module which
contains mocks suitable for end-to-end testing.
Currently there is only one mock present in this
module - the e2e $httpBackend mock.
ngMock ngMockE2E
Fake HTTP backend implementation suitable for end-to-
end testing or backend-less development of applications
that use the $http service.
Fake HTTP backend implementation suitable for unit
testing applications that use the $http service.
.when()
.expect()
.flush()
.verifyNoOutstandingExpectation()
.verifyNoOutstandingRequest()
.resetExpectations()
.when()
ngMockE2E에는 $location 없음 27

Promise + http.flush()
Chrome 54.0.2840 (Windows 10 0.0.0) homeCtrl.test http test ok FAILED
Error: No pending request to flush !
at Function.$httpBackend.flush (node_modules/angular-mocks/angular-mocks.js:1799:34)
at r:/temp/test/homeCtrl.test.js:36:17
promise 함수로 부르면 동작 안함
flush() 타이밍 달라짐
flush는 Util에서 수행
const $injector = angular.injector(['angular1es6']);
const $httpBackend = $injector.get('$httpBackend');
const $http = $injector.get('$http');
beforeEach(() => {
$httpBackend.expectGET('/test')
.respond(['this', 'is', 'GET', 'test', 'data']);
});
it('ok', () => {
return new Promise(resolve => {
$http.get('/test').then(result => {
console.log('get().then()');
console.log(result);
console.log(result.data);
resolve(true);
});
$httpBackend.flush();
});
});
동작하는 코드
static post (uri, param, config) {
// use new promise for flush()
return new Promise((resolve, reject) => {
this.http.post(uri, param, config)
.then(result => {
resolve(result);
}, error => {
console.error(error);
reject(false);
});
if (this.httpBackend && this.httpBackend.flush) {
this.httpBackend.flush();
}
});
}
it('ok', () => {
return new Promise(resolve => {
Promise.resolve()
.then(() => {
$http.get('/test').then(result => {
console.log('get().then()');
console.log(result);
console.log(result.data);
resolve(true);
});
});
$httpBackend.flush();
});
});
28

여러 test 파일 동시 실행
const $injector = angular.injector(['angular1es6']);
Chrome 54.0.2840 (Windows 10 0.0.0) SignInCtrl test logic submit() with ajax error response response error test FAILED
AssertionError: expected [Error: Unexpected request: POST /api/user/signIn
No more request expected] to be an instance of ERROR
Chrome 54.0.2840 (Windows 10 0.0.0) SignUpCtrl test logic submit() error response response error test FAILED
AssertionError: expected [Error: [$rootScope:inprog] $digest already in progress
const ngApp = angular.module(appName, ['ngMock']); // working with $location, but not $httpBackend.whenPOST()...
var $injector = angular.injector(['MoneyBook']);
ClientUtil.http = $http;
ClientUtil.httpBackend = $httpBackend;
29

생성자 안에서 Promise
constructor () {
Promise.resolve(() => {
// do something
});
}
}
describe('constructor()', () => {
it('ok', () => {
// expect what...?
});
});
constructor () {
this.somethingPromise();
}
somethingPromise(){
return Promise.resolve()
.then() => {
// do something
});
}
}
30

Promise + $scope.$apply()
constructor () {
this.count = 0;
}
select () {
.then(() => {
this.count++;
});
}
}
constructor ($scope) {
this.$scope = $scope;
this.count = 0;
}
select () {
.then(() => {
this.count++;
this.$scope.$apply();
});
}
}
31

2016 W3C Conference #4 : ANGULAR + ES6

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