021037bfcd
The use of Array to keep track of inserted items is extremely
confusing, as no elements are ever added to the array. What
the code actually does is monkey-patching properties into an
empty object (that happens to be of type "Array"). While the
direct idiomatic replacement would be {}, update the code to
use a proper map instead.
https://bugzilla.gnome.org/show_bug.cgi?id=780371