feat: add serializeArrays option (#29)

* feat: add optional `convertArrays`

* perf: sync atomic changes to keys

* feat: add `serializeArrays` option

* docs: rephrase debug mode flag

tests/charm-sync/init.spec.luau

@@ -1,19 +0,0 @@
-local ReplicatedStorage = game:GetService("ReplicatedStorage")
-
-local store = require(ReplicatedStorage.DevPackages.Charm.store)
-
-return function()
-	beforeAll(function()
-		_G.__DEV__ = true
-	end)
-
-	afterAll(function()
-		_G.__DEV__ = nil
-	end)
-
-	afterEach(function()
-		table.clear(store.listeners :: any)
-		table.clear(store.capturing.stack)
-		store.capturing.index = 0
-	end)
-end

tests/charm-sync/patch.spec.luau

@@ -98,4 +98,14 @@ return function()
 		expect(applied["2"]).to.be.ok()
 		expect(applied[2]).to.never.be.ok()
 	end)
+
+	it("optionally fixes sparse arrays", function()
+		for index in next, patch.diff({ 1, 1, 1, 1, 1 }, { 2, 1, 1, 2 }) do
+			expect(index).to.be.a("string")
+		end
+
+		for index in next, patch.diff({ 1, 1, 1, 1, 1 }, { 2, 1, 1, 2 }, false) do
+			expect(index).to.be.a("number")
+		end
+	end)
 end

tests/charm-sync/server.spec.luau

@@ -49,7 +49,7 @@ return function()
 		server:_sendPatch(target)
 
 		expect(payload.data.a.b).to.never.be.ok()
-		expect(payload.data.a.c).to.equal(patch.NONE)
+		expect(patch.isNone(payload.data.a.c)).to.equal(true)
 		expect(payload.data.a.d).to.equal(1)
 
 		disconnect()