I'm using typeahead.js's Bloodhound for search. I download all the data once and store it locally, initializing search engine with local property equal to that data. Then, the entries from the data can be added or removed. Adding data works well, the library even has needed API for that. But removing entries from local forces me to call Bloodhound's constructor again, which seems like a bad thing, forcing it to rebuild the index all over again.
So, maybe, there is a hidden backdoor to remove data from local and update the index with less cost?