'use strict';
var $TypeError = require('es-errors/type');
var callBound = require('call-bound');
var $dataViewByteOffset = callBound('DataView.prototype.byteOffset', true);
var isDataView = require('is-data-view');
// node <= 0.10, < 0.11.4 has a nonconfigurable own property instead of a prototype getter
/** @type {import('.')} */
module.exports = $dataViewByteOffset || function byteOffset(x) {
if (!isDataView(x)) {
throw new $TypeError('not a DataView');
}
return x.byteOffset;
};