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)
	-- The merge helper is inlined, so a spread costs no dependency (§7).
	local base = { Name = "base", Text = "from-spread" }

	-- A literal after a spread wins; source order decides precedence.
	local later = (<TextLabel {base} Text="from-literal" />)
	check("spread applied", later.Name == "base")
	check("literal after spread wins", later.Text == "from-literal")

	-- ...and a spread after a literal wins, for the same reason.
	local earlier = (<TextLabel Text="from-literal" {base} />)
	check("spread after literal wins", earlier.Text == "from-spread")

	-- Numeric keys concatenate, so a spread and literal children coexist.
	local withChildren = (
		<Frame {{ (<TextLabel Name="spread-child" />) }}>
			<TextLabel Name="literal-child" />
		</Frame>
	)

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

	check("spread and literal children coexist", #names == 2)
	check("both children present", names[1] == "literal-child" and names[2] == "spread-child")
end