Luau !strict type checker raises a warning when trying to iterate over a empty table without a iterator function

[0Tenth (QuackBack)]

In !strict mode, when you iterate over a empty table without a iterator function (e.g. ipairs, pairs), the type checker raises a warning about needing a iterator.

However, when doing the same thing but when the table has data in it, the code isn’t flagged. I don’t think this is expected behavior.

For example, this code should not get flagged:

--!strict
local x = {}
for iterator, value in x do
	print(value)
end

But this code doesn’t get flagged:

--!strict
local y = {"Hello", "world!"}
for iterator, value in y do
	print(value)
end

Edit: fixed repro code to use the --!strict tag

EmptyTableNoIterator.rbxl (53.1 KB)

[Focia19]

We’ve filed a ticket to our internal database, and we’ll follow up when we have an update!

Thanks for the report!

[music_man1996]

This should be fixed! Sorry for the late update here.