-
Notifications
You must be signed in to change notification settings - Fork 1.6k
/
calculator.js
48 lines (43 loc) · 1.12 KB
/
calculator.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
exports._check = () => {
// DRY up the codebase with this function
// First, move the duplicate error checking code here
// Then, invoke this function inside each of the others
// HINT: you can invoke this function with exports._check()
};
exports.add = (x, y) => {
if (typeof x !== 'number') {
throw new TypeError(`${x} is not a number`);
}
if (typeof y !== 'number') {
throw new TypeError(`${y} is not a number`);
}
return x + y;
};
exports.subtract = (x, y) => {
if (typeof x !== 'number') {
throw new TypeError(`${x} is not a number`);
}
if (typeof y !== 'number') {
throw new TypeError(`${y} is not a number`);
}
return x - y;
};
exports.multiply = (x, y) => {
if (typeof x !== 'number') {
throw new TypeError(`${x} is not a number`);
}
if (typeof y !== 'number') {
throw new TypeError(`${y} is not a number`);
}
return x * y;
};
exports.divide = (x, y) => {
if (typeof x !== 'number') {
throw new TypeError(`${x} is not a number`);
}
if (typeof y !== 'number') {
throw new TypeError(`${y} is not a number`);
}
return x / y;
};
module.exports = exports;