Indexeddb case insensitive query, how?

Question

JavaScript

Good afternoon!
I have an indexeddb database, I have data in it, for example:
"Vasya
VASIA
Vasya
SVETA"
I make a request to the database and get the data lowerBoundKeyRange = IDBKeyRange.lowerBound("Vasya");
Naturally, as a result, I will not get anything. How to make a case-insensitive query to get "Vasya and Vasya and Vasya" at the output?