const potentialSuperset = ['a', 'b', 'c'] as const;
const subset = ['a', 'c'] as const;
const notSuperset = ['a', 'd'] as const;
assert.ok(Arr.isSuperset(potentialSuperset, subset));
assert.notOk(Arr.isSuperset(subset, potentialSuperset));
assert.notOk(Arr.isSuperset(potentialSuperset, notSuperset));
Checks if the first array is a superset of the second array.