fully fix links

components/widget/infobox/widget_infobox_links.lua

@@ -22,8 +22,12 @@ local Links = Class.new(Widget)
 
 local PRIORITY_GROUPS = Lua.import('Module:Links/PriorityGroups', {loadData = true})
 
+---@return Widget?
 function Links:render()
-	local linkInputs = Table.copy(self.props.links or {})
+	if Table.isEmpty(self.props.links) then
+		return nil
+	end
+	local linkInputs = Table.copy(self.props.links)
 
 	local links = {}
 
@@ -53,7 +57,7 @@ function Links:render()
 
 	return HtmlWidgets.Div{children = HtmlWidgets.Div{
 		classes = {'infobox-center', 'infobox-icons'},
-		children = table.concat(links, ' ' )
+		children = Array.interleave(links, ' ')
 	}}
 end
 

spec/array_spec.lua

@@ -213,4 +213,10 @@ describe('array', function()
 			assert.are_same(a, Array.parseCommaSeparatedString('test1 - test2-test3', '-'))
 		end)
 	end)
+
+	describe('Interleave', function ()
+		it('works', function()
+			assert.are_same({'a', ' ', 'b', ' ', 'c'}, Array.interleave({'a', 'b', 'c'}, ' '))
+		end)
+	end)
 end)

standard/array.lua

@@ -664,4 +664,20 @@ function Array.parseCommaSeparatedString(inputString, sep)
 	return Array.map(mw.text.split(inputString, sep or ','), String.trim)
 end
 
+---Interleaves an array with elements
+---Array.interleave({4, 5, 4, 3}, 1) -- {4, 1, 5, 1, 4, 1, 3}
+---@generic V, T
+---@param elements V[]
+---@param x T
+---@return (V|T)[]
+function Array.interleave(elements, x)
+	local size = #elements
+	return Array.flatMap(elements, function(element, index)
+		if index == size then
+			return {element}
+		end
+		return {element, x}
+	end)
+end
+
 return Array