any good Javascript SQLite connection APIs?

I need to access a SQLite database from a (webbrowser) javascript app, and execute queries from javascript (well, i could make a hugeass API frontend too, but why bother.. the clients are trusted); is there any good javascript->SQLite db api/framework/whatever-you-wanna-call-it that i could/should use? or should i just wrap up a simple (php, if i'd do it) query proxy with xmlhttprequest/websocket? (PS: i believe emscripten/SQL.js is not a viable alternative, as i need to save the database between sessions and being able to open the database from other places than the javascript VM, and it uses a huge amount of memory compared to native sqlite, and is much slower when the DB grows~)