feat: batch sync operations

src/__tests__/sync/client.spec.luau

@@ -67,4 +67,29 @@ return function()
 		expect(calls[1]).to.equal(2)
 		expect(calls[2]).to.equal(3)
 	end)
+
+	it("batches patches", function()
+		local a = atom(0)
+		local b = atom(0)
+		local client = sync.client({ atoms = { a = a, b = b } })
+		local states = {}
+
+		subscribe(a, function()
+			states.b = b()
+		end)
+
+		subscribe(b, function()
+			states.a = a()
+		end)
+
+		client:sync({
+			type = "patch",
+			data = { a = 1, b = 2 },
+		})
+
+		expect(a()).to.equal(1)
+		expect(b()).to.equal(2)
+		expect(states.a).to.equal(1)
+		expect(states.b).to.equal(2)
+	end)
 end

src/sync/client.luau

@@ -1,3 +1,4 @@
+local store = require(script.Parent.Parent.store)
 local types = require(script.Parent.Parent.types)
 type Atom<T> = types.Atom<T>
 type SyncPayload = types.SyncPayload
@@ -36,13 +37,17 @@ local function client(options: ClientOptions): ClientSyncer
 		for index = 1, select("#", ...) do
 			local payload = select(index, ...)
 
-			for key, state in next, payload.data do
-				if payload.type == "patch" then
-					atoms[key](patch.apply(atoms[key](), state))
-				else
-					atoms[key](state)
+			store.batch(function()
+				for key, state in next, payload.data do
+					local atom = atoms[key]
+
+					if payload.type == "patch" then
+						atom(patch.apply(atom(), state))
+					else
+						atom(state)
+					end
 				end
-			end
+			end)
 		end
 	end