You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

13 lines
323 B

'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();
};