odin-javascript-exercises/node_modules/strip-bom/index.js
2017-12-15 12:56:14 -06:00

14 lines
317 B
JavaScript

'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;
};