module.exports = isBuf; var withNativeBuffer = typeof Buffer === 'function' && typeof Buffer.isBuffer === 'function'; var withNativeArrayBuffer = typeof ArrayBuffer === 'function'; var isView = function (obj) { return typeof ArrayBuffer.isView === 'function' ? ArrayBuffer.isView(obj) : (obj.buffer instanceof ArrayBuffer); }; /** * Returns true if obj is a buffer or an arraybuffer. * * @api private */ function isBuf(obj) { return (withNativeBuffer && Buffer.isBuffer(obj)) || (withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))); }