asynchronously execute a request takes a source object.

In most places this refers to an IDBObjectStore, IDBIndex, or IDBCursor. (handle objects)
However, in IDBCursor::continue step 11, it seems to refer to the "internal" objects (Object Store, and Index)
Since JS is never exposed to "internal" types, having them there seems very odd.

Is this a typo (this’s source -> this) for some of the IDBCursor methods? (advance, continue, continuePrimaryKey)

Or should the methods that create an IDBCursor pass a different object instead?
i.e IDBObjectStore::openCursor creates one with this's object store, which would be an "internal" object