Module:table/maxIndex

---

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local math_module = "Module:math"

local pairs = pairs

local function is_positive_integer(...)
	is_positive_integer = require(math_module).is_positive_integer
	return is_positive_integer(...)
end

--[==[
Returns the highest positive integer index of a table or array that possibly has holes in it, or otherwise 0 if no positive integer keys are found. Note that this differs from `table.maxn`, which returns the highest positive numerical index, even if it is not an integer.]==]
return function(t)
	local max_key = 0
	for k in pairs(t) do
		-- The `strict_types` flag prevents type coercion to numbers.
		if is_positive_integer(k) and k > max_key then
			max_key = k
		end
	end
	return max_key
end