Setting length

[danielearwicker]

An array’s length property can be set, eg. to shorten the array. This should be allowed.

[leroydev]

I agree, I think the best way to fix this is to implement a whitelist option, in which users can define properties that will be ignored by this rule, like this:

"no-setting-array-properties": {
    "options": {
        "whitelist": ["length"]
    }
}

With as default I'd guess:
["length", "prototype", "__proto__"]

What do you think about this? :) @danielearwicker