├── .gitignore
├── lib
    ├── tests
    │   └── index.js
    └── core
    │   └── Dispatcher.js
├── README.md
├── package.json
├── .vscode
    └── launch.json
└── example
    ├── index.js
    └── models
        └── Account.js


/.gitignore:
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1 | 


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/lib/tests/index.js:
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1 | // Someday...
2 | throw new Error('Not Implemented')
3 | 


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/README.md:
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1 | # Message Passing
2 | 
3 | Пример реализации посылки сообщений на JS
4 | 
5 | Пример адаптирован из книги - ["Структура и интерпретация компьютерных программ"](https://www.ozon.ru/context/detail/id/5322055/?partner=ExtremeCode&utm_content=link)
6 | 


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/package.json:
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 1 | {
 2 |   "name": "message-passing",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "start": "node ./example/index.js"
 8 |   },
 9 |   "keywords": ["js", "oop", "message-passing", "functional"],
10 |   "author": "Artem Dontsov",
11 |   "license": "MIT"
12 | }
13 | 


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/lib/core/Dispatcher.js:
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 1 | 
 2 | const Dispatcher = (methods) => function (method) {
 3 |     const def = () => false
 4 | 
 5 |     let args = Array.from(arguments)
 6 |     if (methods === undefined) {
 7 |         throw new Error('Methods table not initialized')
 8 |     }
 9 | 
10 |     if (typeof(method) === 'string') {
11 |         args = args.splice(1, args.length)
12 |         const handler = methods[method] || def
13 |         return handler(...args)
14 |     }
15 |  
16 |     return () => { }
17 | }
18 | 
19 | module.exports = Dispatcher
20 | 


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/.vscode/launch.json:
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 1 | {
 2 |     // Use IntelliSense to learn about possible attributes.
 3 |     // Hover to view descriptions of existing attributes.
 4 |     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
 5 |     "version": "0.2.0",
 6 |     "configurations": [
 7 |         {
 8 |             "type": "node",
 9 |             "request": "launch",
10 |             "name": "Launch Program",
11 |             "program": "${workspaceFolder}\\example\\index.js",
12 |             "outputCapture": "std"
13 |         }
14 |     ]
15 | }


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/example/index.js:
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 1 | const Account = require('./models/Account')
 2 | 
 3 | const main = () => {
 4 |     let name
 5 |     let balance
 6 |     let account = Account(100)
 7 | 
 8 |     balance = account('withdraw', 10)
 9 |     balance = account('withdraw', 20)
10 |     balance = account('withdraw', 20)
11 | 
12 |     account('setFirstName', 'Extreme')
13 |     account('setLastName', 'Code')
14 |     
15 |     account('notExistedMethod')
16 | 
17 |     name = account('getName')
18 | 
19 |     console.log('Name: ')
20 |     console.log(name)
21 | 
22 |     console.log('Balance: ')
23 |     console.log(balance)
24 | }
25 | 
26 | main()
27 | 


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/example/models/Account.js:
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 1 | const Dispatcher = require('../../lib/core/Dispatcher')
 2 | 
 3 | const Account = (amount) => {
 4 |     let balance = amount
 5 |     let firstName = null
 6 |     let lastName = null
 7 |    
 8 |     const methods = {
 9 |       withdraw: (count) => {
10 |         if (count > balance) {
11 |           throw new Error('Not enough cash')
12 |         }
13 |    
14 |         balance -= count
15 |         return balance
16 |       },
17 |       deposit: (count) => {
18 |         balance += count
19 |         return balance
20 |       },
21 |       setFirstName: (name) => {
22 |           firstName = name
23 |           return firstName
24 |       },
25 |       setLastName: (name) => {
26 |           lastName = name
27 |           return lastName
28 |       },
29 |       getName: () => {
30 |           return `${firstName} ${lastName}`
31 |       }
32 |     }
33 |    
34 |     return Dispatcher(methods)
35 | }
36 | 
37 | module.exports = Account
38 | 


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