try {
var ab = new ArrayBuffer(1, { maxByteLength: 2 });
if (typeof ab.resize !== 'function') throw new Error('no resize');
ab.resize(2);
var sab = new SharedArrayBuffer(1, { maxByteLength: 2 });
if (typeof sab.grow !== 'function') throw new Error('no grow');
sab.grow(2);
console.log('OK');
} catch (e) { console.log('NO:', e); }