├── .editorconfig
├── index.js
└── package.json


/.editorconfig:
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 1 | # http://EditorConfig.org
 2 | 
 3 | root = true
 4 | 
 5 | [*]
 6 | end_of_line = lf
 7 | insert_final_newline = true
 8 | trim_trailing_whitespace = true
 9 | charset = utf-8
10 | 
11 | [*.js]
12 | indent_style = space
13 | indent_size = 2
14 | 
15 | [*.md]
16 | trim_trailing_whitespace = false
17 | 


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/index.js:
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 1 | let balance = 500.00;
 2 | 
 3 | class Withdrawal {
 4 | 
 5 |   constructor(amount) {
 6 |     this.amount = amount;
 7 |   }
 8 | 
 9 |   commit() {
10 |     balance -= this.amount;
11 |   }
12 | 
13 | }
14 | 
15 | 
16 | 
17 | 
18 | // DRIVER CODE BELOW
19 | // We use the code below to "drive" the application logic above and make sure it's working as expected
20 | 
21 | t1 = new Withdrawal(50.25);
22 | t1.commit();
23 | console.log('Transaction 1:', t1);
24 | 
25 | t2 = new Withdrawal(9.99);
26 | t2.commit();
27 | console.log('Transaction 2:', t2);
28 | 
29 | console.log('Balance:', balance);
30 | 


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/package.json:
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 1 | {
 2 |   "name": "transactions",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "start": "node index.js",
 8 |     "test": "echo \"Error: no test specified\" && exit 1"
 9 |   },
10 |   "author": "",
11 |   "license": "ISC"
12 | }
13 | 


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