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'use strict';
var callBound = require('call-bind/callBound');
var $byteLength = callBound('ArrayBuffer.prototype.byteLength', true);
var isArrayBuffer = require('is-array-buffer');
/** @type {import('.')} */
module.exports = function byteLength(ab) {
if (!isArrayBuffer(ab)) {
return NaN;
}
return $byteLength ? $byteLength(ab) : ab.byteLength;
}; // in node < 0.11, byteLength is an own nonconfigurable property
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