(In reply to Devin Rousso from https://webkit.org/b/143589#29) > > Does this mean we create a completion list of 1000000 entries if the object is large? We probably shouldn't do that. It would be better for the completion controller generate numbers to handle a number range, instead of an object with millions of keys. > > That's true. We don't want to fill the autocomplete list with a list item for each index. Frankly, I'm not sure how useful an autocomplete of index keys really is, but given that it exists now, I won't remove it. I'll revert this part and create a followup bug to do something sane for this case.