refactor: use new type solver

packages/charm-sync/src/client.luau

@@ -3,7 +3,7 @@ local patch = require("./patch")
 local types = require("./types")
 
 type SyncPayload = types.SyncPayload
-type ReactiveProxy<T = {}> = types.ReactiveProxy<T>
+type ReactiveProxy<T = { [any]: any }> = types.ReactiveProxy<T>
 
 local trackedSignals: { [string]: (any) -> any } = {}
 local trackedReactives: { [string]: ReactiveProxy } = {}

packages/charm-sync/src/patch.luau

@@ -39,7 +39,7 @@ end
 	long as the target array is not sparse. This function ensures that the diff
 	function produces a patch that can be correctly applied.
 ]]
-local function stringifySparseArray(object: {}): { [string | number]: any }
+local function stringifySparseArray(object: { [any]: any }): { [string | number]: any }
 	local maxn = table.maxn(object)
 
 	if maxn == 0 or maxn == #object then

packages/charm-sync/src/server.luau

@@ -39,8 +39,9 @@ local syncCallback: ((client: any, payloads: { SyncPayload }) -> ())?
 	support custom implementations of reactive proxies.
 ]]
 local function toRaw<T>(value: T): T
+	local value: any = value
 	if type(value) == "table" and type(value.__target) == "table" and type(value.__track) == "function" then
-		value.__track()
+		(value.__track :: () -> ())()
 		return toRaw(value.__target)
 	end
 	return value
@@ -153,15 +154,17 @@ local function selectFromGlobalPatchList(client: any, globalPatches: { any }): {
 		local status = clientKeys[key]
 
 		if status == LISTENING_FOR_CHANGES then
-			table.insert(payloads, {
+			local payload: SyncPayload = {
 				type = "patch",
 				data = { [key] = patchData },
-			})
+			}
+			table.insert(payloads, payload)
 		elseif status == PENDING_INITIAL_STATE then
-			table.insert(payloads, {
+			local payload: SyncPayload = {
 				type = "init",
 				data = { [key] = update.newValue },
-			})
+			}
+			table.insert(payloads, payload)
 			clientKeys[key] = LISTENING_FOR_CHANGES
 		end
 	end
@@ -228,11 +231,19 @@ local function selectFromGlobalPatch(client: any, globalPatch: { [string]: any }
 	end
 
 	if next(initData) ~= nil then
-		table.insert(payloads, { type = "init", data = initData })
+		local payload: SyncPayload = {
+			type = "init",
+			data = initData,
+		}
+		table.insert(payloads, payload)
 	end
 
 	if next(patchData) ~= nil then
-		table.insert(payloads, { type = "patch", data = patchData })
+		local payload: SyncPayload = {
+			type = "patch",
+			data = patchData,
+		}
+		table.insert(payloads, payload)
 	end
 
 	return payloads

packages/charm-sync/src/utils.luau

@@ -2,10 +2,6 @@ local Charm = require("../Charm")
 
 type Atom<T> = Charm.Atom<T>
 
-type NestedTable = {
-	[any]: NestedTable | any,
-}
-
 --[[
 	Flattens a nested table into a single table with slash-separated keys.
 	Useful for recursively collecting atoms returned by modules.
@@ -13,15 +9,15 @@ type NestedTable = {
 	@param input A nested table.
 	@return A flattened table with slash-separated keys.
 ]]
-local function flatten<Flattened>(input: {}): Flattened
+local function flatten<Flattened>(input: { [any]: any }): Flattened
 	local result = {}
 
-	local function visit(node: {}, path: string)
+	local function visit(node: { [any]: any }, path: string)
 		for key, value in node do
 			local location = if path == "" then tostring(key) else path .. "/" .. tostring(key)
 
 			if type(value) == "table" then
-				visit(value :: {}, location)
+				visit(value, location)
 			else
 				result[location] = value
 			end

packages/charm-sync/src/validate.luau

@@ -1,4 +1,4 @@
-local function isTableUnsafe(object: {})
+local function isTableUnsafe(object: { [any]: any })
 	local key = next(object)
 
 	if key == nil then
@@ -31,9 +31,8 @@ end
 	with remote argument limitations, such as sparse arrays or mixed tables.
 
 	@param value The table value.
-	@param key The key of the value.
 ]]
-local function validate(value: {})
+local function validate(value: { [any]: any })
 	if isTableUnsafe(value) then
 		warn(
 			`Cannot sync tables unsupported by remote events! See the table below for more info.\n\n`

packages/charm-sync/test/patch.test.luau

@@ -2,7 +2,7 @@ local config = require("../src/config")
 local patch = require("../src/patch")
 local test = require("../../../tests/test")
 
-local function mockArraySerdes(object: {}): {}
+local function mockArraySerdes(object: { [any]: any }): { [any]: any }
 	if object[1] then
 		local copy = {}
 		for index = 1, #object do

packages/charm-sync/test/server.test.luau

@@ -4,6 +4,7 @@ local config = require("../src/config")
 local patch = require("../src/patch")
 local server = require("../src/server")
 local test = require("../../../tests/test")
+local types = require("../src/types")
 
 test.afterEach(function()
 	server.reset()
@@ -14,7 +15,7 @@ test("should replicate state changes", function()
 	local a = Charm.atom(0)
 	local b = Charm.atom(0)
 	local c = Charm.atom(0)
-	local target, payloads
+	local target: unknown, payloads: { types.SyncPayload }
 
 	server.addSignalsToClient(client, { a = a, b = b, c = c })
 	server.connect(function(...)
@@ -41,7 +42,7 @@ test("should replicate partial state patches", function()
 	local client = {}
 	local a = Charm.atom({ x = 0, y = 0 })
 	local b = Charm.atom(0 :: number?)
-	local target, payloads
+	local target: unknown, payloads: { types.SyncPayload }
 
 	server.addSignalsToClient(client, { a = a, b = b })
 	server.connect(function(...)
@@ -68,7 +69,7 @@ end)
 test("should replicate partial state patches (reactive)", function()
 	local client = {}
 	local a = DeepCharm.reactive({ x = { y = 0 }, z = 0 :: number? })
-	local target, payloads
+	local target: unknown, payloads: { types.SyncPayload }
 
 	server.addSignalsToClient(client, { a = a })
 	server.connect(function(...)
@@ -118,7 +119,7 @@ test("should init new clients", function()
 	local clientA = {}
 	local clientB = {}
 	local a = Charm.atom(0)
-	local payloadsA, payloadsB
+	local payloadsA: { types.SyncPayload }, payloadsB: { types.SyncPayload }
 
 	server.addSignalsToClient(clientA, { a = a })
 	server.connect(function(target, payloads)
@@ -147,7 +148,7 @@ test("should init new atoms", function()
 	local client = {}
 	local a = Charm.atom(0)
 	local b = Charm.atom(0)
-	local target, payloads
+	local target: unknown, payloads: { types.SyncPayload }
 
 	server.addSignalsToClient(client, { a = a })
 	server.connect(function(...)
@@ -172,7 +173,7 @@ test("should only replicate to synced clients", function()
 	local clientB = {}
 	local a = Charm.atom(0)
 	local b = Charm.atom(0)
-	local payloadsA, payloadsB
+	local payloadsA: { types.SyncPayload }, payloadsB: { types.SyncPayload }
 
 	server.addSignalsToClient(clientA, { a = a })
 	server.addSignalsToClient(clientB, { b = b })
@@ -214,7 +215,7 @@ end)
 test("should serialize state", function()
 	local client = {}
 	local a = Charm.atom({ 1, 2, 3, 4, 5 })
-	local payloads
+	local payloads: { types.SyncPayload }
 
 	server.addSignalsToClient(client, { a = a })
 	server.connect(function(_, p)
@@ -231,7 +232,7 @@ end)
 test("should not send unchanged state", function()
 	local client = {}
 	local a = Charm.atom(0)
-	local payloads
+	local payloads: { types.SyncPayload }
 
 	server.addSignalsToClient(client, { a = a })
 	server.connect(function(_, p)
@@ -262,7 +263,7 @@ test.describe("historical", function()
 		local a = Charm.atom(0)
 		local b = Charm.atom(0)
 		local c = Charm.atom(0)
-		local target, payloads
+		local target: unknown, payloads: { types.SyncPayload }
 
 		server.addSignalsToClient(client, { a = a, b = b, c = c })
 		server.connect(function(...)
@@ -292,7 +293,7 @@ test.describe("historical", function()
 		local a = DeepCharm.reactive({ value = 0 })
 		local b = DeepCharm.reactive({ value = 0 })
 		local c = DeepCharm.reactive({ value = 0 })
-		local target, payloads
+		local target: unknown, payloads: { types.SyncPayload }
 
 		server.addSignalsToClient(client, { a = a, b = b, c = c })
 		server.connect(function(...)
@@ -321,7 +322,7 @@ test.describe("historical", function()
 		local clientA = {}
 		local clientB = {}
 		local a = Charm.atom(0)
-		local payloadsA, payloadsB
+		local payloadsA: { types.SyncPayload }, payloadsB: { types.SyncPayload }
 
 		server.addSignalsToClient(clientA, { a = a })
 		server.connect(function(target, payloads)
@@ -357,7 +358,7 @@ test.describe("historical", function()
 		local client = {}
 		local a = Charm.atom(0)
 		local b = Charm.atom(0)
-		local payloads
+		local payloads: { types.SyncPayload }
 
 		server.addSignalsToClient(client, { a = a })
 		server.connect(function(_, ...)
@@ -386,7 +387,7 @@ test.describe("historical", function()
 	test("should not send unchanged state", function()
 		local client = {}
 		local a = Charm.atom(0)
-		local payloads
+		local payloads: { types.SyncPayload }
 
 		server.addSignalsToClient(client, { a = a })
 		server.connect(function(_, p)

packages/charm-sync/test/utils.test.luau

@@ -8,7 +8,8 @@ test("should flatten functions", function()
 		b = { c = Charm.atom(0) },
 		d = { e = { f = utils.signalToAtom(Charm.signal(0)) } },
 	}
-	local result = utils.flatten(input)
+
+	local result = utils.flatten<<{ [string]: Charm.Atom<number> }>>(input)
 
 	assert(result.a == input.a, "should flatten the first level")
 	assert(result["b/c"] == input.b.c, "should flatten the second level")