Frontend Modular JavaScript

with SystemJS & jspm

QuesCheetah 김명주

Index

  1. SystemJS + jspm
  2. 모듈화
  3. Plugin
  4. Building

이번주에 하고 싶었던 것

흩어진 JavaScript 코드 모으기

모아서 분류하기

모듈화하기( + HTML, CSS)

쉽게 배포하기?

Before & After

base.html

index.html

apikey_new.html

<script>

...

</script>

<script>

...

</script>

action.html

<script>

...

</script>

...

Before & After

app.js

Before & After

Before & After

1. SystemJS + jspm

홈페이지 가서 다운로드

다운받은 경로를 찾고

내 파일에 import

방법1

1. SystemJS + jspm

1. SystemJS + jspm

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">

    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
    <h1>Hello, world!</h1>

    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="js/bootstrap.min.js"></script>
  </body>
</html>

1. SystemJS + jspm

문제점

Get 과 Load 가 Disconnect

1. SystemJS + jspm

방법2

BOWER

http://bower.io/

1. SystemJS + jspm

1. SystemJS + jspm

1. SystemJS + jspm

여전히

Disconnect 해결 X

<script> ordering 중요

1. SystemJS + jspm

문제 해결 방향

https://www.npmjs.com/

1. SystemJS + jspm

> npm install lodash
> ls node_modules
 
#=> lodash

1. Installing

// index.js 
var lodash = require('lodash');
 
var output = lodash.without([1, 2, 3], 1);
console.log(output);

2. using the installed package

1. SystemJS + jspm

HOW?

1. SystemJS + jspm

JavaScript ES2015

파일 간 모듈화 기능 추가

http://www.ecma-international.org/ecma-262/6.0/

1. SystemJS + jspm

no more encapsulation

IEFE, 'use strict' X

(function() {
  // the code here is executed
  // once in its own scope
})();

https://en.wikipedia.org/wiki/Immediately-invoked_function_expression

1. SystemJS + jspm

https://babeljs.io/docs/learn-es2015/#modules

// lib/math.js
export function sum(x, y) {
  return x + y;
}
export var pi = 3.141593;

// app.js
import * as math from "lib/math";
alert("2π = " + math.sum(math.pi, math.pi));

// otherApp.js
import {sum, pi} from "lib/math";
alert("2π = " + sum(pi, pi));

1. SystemJS + jspm

But, module syntax 를 지원하는 브라우저 X

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import

Transpiler 필요

1. SystemJS + jspm

Transpiler 필요

ES6 -> ES5

주의 : module loader draft가 다름

Traceur

Babel

1. SystemJS + jspm

Module, Module loader

SystemJS + jspm

브라우저에서 사용

1. SystemJS + jspm

Browser

ES6

Module

Loader Polyfill

SytemJS

jspm

MyApp

npm:angluar

github:bootstrap

npm:react

Babel

1. SystemJS + jspm

SystemJS

  • 다양한 모듈 format 을 지원
    • (Common JS, AMD, Global )
  • 여러가지 format 을 단 하나의 format으로 전환
  • 브라우저에 vanilla ES5 형태로 로드
  • 람다, 클래스와 같은 ES6 기능 사용가능

참고 : 앵귤러2

https://angular.io/docs/ts/latest/quickstart.html

1. SystemJS + jspm

// math.js
exports.add = function() {
    var sum = 0, i = 0, args = arguments, l = args.length;
    while (i < l) {
        sum += args[i++];
    }
    return sum;
};
// increment.js
var add = require('math').add;
exports.increment = function(val) {
    return add(val, 1);
};

CommonJS Format

1. SystemJS + jspm

 define("alpha", ["require", "exports", "beta"], function (require, exports, beta) {
       exports.verb = function() {
           return beta.verb();
           //Or:
           return require("beta").verb();
       }
   });

AMD Format

1. SystemJS + jspm

1. SystemJS + jspm

jspm

  • SystemJS을 바탕으로 제작
  • JavaScript Package Manager
  • npm / github 통해 다운
  • dependency 에 의한 모듈 재사용
    • (이미 받아 놓은거 사용)
jspm install angular
jspm bundle app.js app/app.bundle.js

2. 모듈화

시작

export function Deck(){}
import { Deck } from "deck";

기능 동작 테스트

코드를 분류한다.

IEFE, 'use strict' 필요 없음

2. 모듈화

import "qc-sdk";

export default function Config(){
    var config = {
        "apiKey": 'Your key',
        "callBackUrl": "http://localhost:8000",
    };
    var qc = new QuesCheetah(config);
}
<script type="application/javascript">
    var self = this;
    var config = {
        "apiKey": 'Your key',
        "callBackUrl": "http://localhost:8000",
    };
    var qc = new QuesCheetah(config);
</script>

quescheetah-init.js

base.html

2. 모듈화

2. 모듈화

2. 모듈화

2. 모듈화

2. 모듈화

2. 모듈화

2. 모듈화

SystemJS & jspm

ES6 + Module + Package Manager

이 외의 기능 ->

3. Plugin

JavaScript 뿐만 아니라

CSS, HTML, TEXT 도 모듈화

jspm install text
import myText from './mytext.html!text';

jspm install css
import 'static/common.css';

4. Building

https://github.com/jspm/jspm-cli/blob/4d06355a73708b81d567f196ac759174b27b3021/docs/production-workflows.md

SystemJS , config파일 필요 X

<script src="app.js"></script>

jspm bundle-sfx app/main.js app.js

4. Building

  • 파일을 합쳐서 bundle 생성하는게  아님
  • 모듈의 hierarchy 를 읽어 config 파일에 저장
  • 요청될 때 모듈을 로드하는게 아니라
  • 병렬로 한꺼번에 로딩
  • 요청시간 감소

 

jspm depcache app.js

4. Building

참고:

https://app.pluralsight.com/library/courses/javascript-systemjs-jspm/table-of-contents

감사합니다.

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By Ming Kim

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