luaux 0.1.3

LuauX — JSX-style markup for Luau
Documentation 
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--!nocheck
local vide = require("../vide/lib")
local create = vide.create

return function(check)
	-- A nil child is emitted verbatim, leaving a hole in the array part. That
	-- is safe because Vide iterates with generalised `for k, v in t`, which
	-- skips absent keys; `ipairs` would stop at the hole and silently drop every
	-- sibling after it. This fixture is what proves the distinction, and what
	-- would catch it if Vide ever changed.
	local frame = (
		<Frame>
			<TextLabel Name="before" />
			{false and (<TextLabel Name="absent" />) or nil}
			<TextLabel Name="after" />
		</Frame>
	)

	local names = {}
	for _, child in frame:GetChildren() do
		table.insert(names, child.Name)
	end
	table.sort(names)

	check("nil child dropped", #names == 2)
	check("sibling after a nil survives", names[1] == "after" and names[2] == "before")

	local shown = (
		<Frame>
			{true and (<TextLabel Name="present" />) or nil}
		</Frame>
	)
	check("truthy conditional renders", shown:GetChildren()[1].Name == "present")
end