Add yield intervals for diffing and hydrating processes

- Introduced `DIFF_YIELD_INTERVAL` and `HYDRATE_YIELD_INTERVAL` constants to manage execution pacing during the diffing and hydrating processes, respectively.
- Implemented logic to pause execution every specified interval to improve performance and prevent potential blocking in long-running operations.
- Enhanced the `diff` and `hydrate` functions to track and yield based on their respective counts, ensuring smoother operation during intensive tasks.

These changes aim to enhance the responsiveness of the system during heavy processing tasks by introducing controlled yielding mechanisms.

plugin/src/Reconciler/diff.lua

@@ -50,6 +50,8 @@ local function shouldDeleteChild(virtualInstance, childInstance)
 	return false
 end
 
+local DIFF_YIELD_INTERVAL = 1000
+
 local function diff(instanceMap, virtualInstances, rootId, serverInfo)
 	local patch = {
 		removed = {},
@@ -57,6 +59,8 @@ local function diff(instanceMap, virtualInstances, rootId, serverInfo)
 		updated = {},
 	}
 
+	local diffCount = 0
+
 	-- Build a lookup table for visible services (for ignoreHiddenServices check)
 	local visibleServicesSet: { [string]: boolean } = {}
 	if serverInfo and serverInfo.ignoreHiddenServices and serverInfo.visibleServices then
@@ -78,6 +82,10 @@ local function diff(instanceMap, virtualInstances, rootId, serverInfo)
 
 	-- Internal recursive kernel for diffing an instance with the given ID.
 	local function diffInternal(id)
+		diffCount += 1
+		if diffCount % DIFF_YIELD_INTERVAL == 0 then
+			task.wait()
+		end
 		local virtualInstance = virtualInstances[id]
 		local instance = instanceMap.fromIds[id]
 

plugin/src/Reconciler/hydrate.lua

@@ -13,11 +13,21 @@ local Log = require(Packages.Log)
 local invariant = require(script.Parent.Parent.invariant)
 local Matching = require(script.Parent.matching)
 
+local HYDRATE_YIELD_INTERVAL = 1000
+
 local function hydrate(instanceMap, virtualInstances, rootId, rootInstance, session)
 	if not session then
 		session = Matching.newSession()
 	end
 
+	if not session.hydrateCount then
+		session.hydrateCount = 0
+	end
+	session.hydrateCount += 1
+	if session.hydrateCount % HYDRATE_YIELD_INTERVAL == 0 then
+		task.wait()
+	end
+
 	local virtualInstance = virtualInstances[rootId]
 
 	if virtualInstance == nil then