The JavaScript exception "invalid Array.prototype.sort argument" occurs when the argument of Array.prototype.sort() isn't either undefined or a function which compares its operands.
The JavaScript exception "invalid Array.prototype.sort argument" occurs when the argument of Array.prototype.sort() isn't either undefined or a function which compares its operands.
TypeError: The comparison function must be either a function or undefined (V8-based) TypeError: invalid Array.prototype.sort argument (Firefox) TypeError: Array.prototype.sort requires the comparator argument to be a function or undefined (Safari)
The argument of Array.prototype.sort() is expected to be either undefined or a function which compares its operands.
[1, 3, 2].sort(5); // TypeError
[1, 3, 2].sort(); // [1, 2, 3] [1, 3, 2].sort((a, b) => a - b); // [1, 2, 3]
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Array_sort_argument