| 'use strict'; | |
| module.exports = x => { | |
| if (typeof x !== 'string') { | |
| throw new TypeError('Expected a string, got ' + typeof x); | |
| } | |
| // Catches EFBBBF (UTF-8 BOM) because the buffer-to-string | |
| // conversion translates it to FEFF (UTF-16 BOM) | |
| if (x.charCodeAt(0) === 0xFEFF) { | |
| return x.slice(1); | |
| } | |
| return x; | |
| }; |