14 lines
323 B
JavaScript
14 lines
323 B
JavaScript
|
'use strict';
|
||
|
|
module.exports = function (str, sep) {
|
||
|
|
if (typeof str !== 'string') {
|
||
|
|
throw new TypeError('Expected a string');
|
||
|
|
}
|
||
|
|
|
||
|
|
sep = typeof sep === 'undefined' ? '_' : sep;
|
||
|
|
|
||
|
|
return str
|
||
|
|
.replace(/([a-z\d])([A-Z])/g, '$1' + sep + '$2')
|
||
|
|
.replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + sep + '$2')
|
||
|
|
.toLowerCase();
|
||
|
|
};
|