It used to be open (probably because that was the only way to extend it before the module system), leading to some very sub-optimal error messages on something like files.foo.connent = "blah".
Make it closed, so that the above properly fails with:
contract broken by the value of `files`
extra field `connent`
It used to be open (probably because that was the only way to extend it before the module system), leading to some very sub-optimal error messages on something like
files.foo.connent = "blah".Make it closed, so that the above properly fails with: