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| '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();
| };
|
|
