Consider this simple attempt to find a value in an object:

var config = {
        product1: {
            ids: ['master']
        },
        product2: {
            ids: ['ps1', 'ps2']
        }
    };

var id = 'ps2';
var slotID = 'master';
var categorySlotIds = config[slotID].ids;

categorySlotIds.find(id);

I get: TypeError: Cannot find function find in object product1, product2

If I do typeof(categorySlotIDs) the result is object.

The manual for find says: The find() method returns the first element in the provided array

What gives?