Add benchmarking, perf gains, and better settings UI (#850)

plugin/src/Timer.lua

@@ -0,0 +1,57 @@
+local Settings = require(script.Parent.Settings)
+
+local clock = os.clock
+
+local Timer = {
+	_entries = {},
+}
+
+function Timer._start(label)
+	local start = clock()
+	if not label then
+		error("[Rojo-Timer] Timer.start: label is required", 2)
+		return
+	end
+
+	table.insert(Timer._entries, { label, start })
+end
+
+function Timer._stop()
+	local stop = clock()
+
+	local entry = table.remove(Timer._entries)
+	if not entry then
+		error("[Rojo-Timer] Timer.stop: no label to stop", 2)
+		return
+	end
+
+	local label = entry[1]
+	if #Timer._entries > 0 then
+		local priorLabels = {}
+		for _, priorEntry in ipairs(Timer._entries) do
+			table.insert(priorLabels, priorEntry[1])
+		end
+		label = table.concat(priorLabels, "/") .. "/" .. label
+	end
+
+	local start = entry[2]
+	local duration = stop - start
+	print(string.format("[Rojo-Timer] %s took %.3f ms", label, duration * 1000))
+end
+
+-- Replace functions with no-op if not in debug mode
+local function no_op() end
+local function setFunctions(enabled)
+	if enabled then
+		Timer.start = Timer._start
+		Timer.stop = Timer._stop
+	else
+		Timer.start = no_op
+		Timer.stop = no_op
+	end
+end
+
+Settings:onChanged("timingLogsEnabled", setFunctions)
+setFunctions(Settings:get("timingLogsEnabled"))
+
+return Timer