blob: 579f99b47f772aa47b7e683069987b9299411f09 (
plain)
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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
'use strict';
const preserveCamelCase = string => {
let isLastCharLower = false;
let isLastCharUpper = false;
let isLastLastCharUpper = false;
for (let i = 0; i < string.length; i++) {
const character = string[i];
if (isLastCharLower && /[a-zA-Z]/.test(character) && character.toUpperCase() === character) {
string = string.slice(0, i) + '-' + string.slice(i);
isLastCharLower = false;
isLastLastCharUpper = isLastCharUpper;
isLastCharUpper = true;
i++;
} else if (isLastCharUpper && isLastLastCharUpper && /[a-zA-Z]/.test(character) && character.toLowerCase() === character) {
string = string.slice(0, i - 1) + '-' + string.slice(i - 1);
isLastLastCharUpper = isLastCharUpper;
isLastCharUpper = false;
isLastCharLower = true;
} else {
isLastCharLower = character.toLowerCase() === character && character.toUpperCase() !== character;
isLastLastCharUpper = isLastCharUpper;
isLastCharUpper = character.toUpperCase() === character && character.toLowerCase() !== character;
}
}
return string;
};
const camelCase = (input, options) => {
if (!(typeof input === 'string' || Array.isArray(input))) {
throw new TypeError('Expected the input to be `string | string[]`');
}
options = Object.assign({
pascalCase: false
}, options);
const postProcess = x => options.pascalCase ? x.charAt(0).toUpperCase() + x.slice(1) : x;
if (Array.isArray(input)) {
input = input.map(x => x.trim())
.filter(x => x.length)
.join('-');
} else {
input = input.trim();
}
if (input.length === 0) {
return '';
}
if (input.length === 1) {
return options.pascalCase ? input.toUpperCase() : input.toLowerCase();
}
const hasUpperCase = input !== input.toLowerCase();
if (hasUpperCase) {
input = preserveCamelCase(input);
}
input = input
.replace(/^[_.\- ]+/, '')
.toLowerCase()
.replace(/[_.\- ]+(\w|$)/g, (_, p1) => p1.toUpperCase())
.replace(/\d+(\w|$)/g, m => m.toUpperCase());
return postProcess(input);
};
module.exports = camelCase;
// TODO: Remove this for the next major release
module.exports.default = camelCase;
|
