function arraysAreEqual(a, b) { return Array.isArray(a) && Array.isArray(b) && a.length === b.length && a.every((val, index) => val === b[index]); }
function arraysAreEqual(a, b) { return Array.isArray(a) && Array.isArray(b) && a.length === b.length && a.every((val, index) => val === b[index]); }