Release 0.4.10

Closes #66.

CHANGES.md

@@ -1,7 +1,20 @@
 # Rojo Change Log
 
 ## Current master
-* *No changes*
+* Added support for `init.model.json` files, which enable versioning `Tool` instances (among other things) with Rojo. ([#66](https://github.com/LPGhatguy/rojo/issues/66))
+* Fixed obscure error when syncing into an invalid service.
+* Fixed multiple sync processes occurring when a server ID mismatch is detected.
+
+## 0.4.9 (May 26, 2018)
+* Fixed warning when renaming or removing files that would sometimes corrupt the instance cache ([#72](https://github.com/LPGhatguy/rojo/pull/72))
+* JSON models are no longer as strict -- `Children` and `Properties` are now optional.
+
+## 0.4.8 (May 26, 2018)
+* Hotfix to prevent errors from being thrown when objects managed by Rojo are deleted
+
+## 0.4.7 (May 25, 2018)
+* Added icons to the Rojo plugin, made by [@Vorlias](https://github.com/Vorlias)! ([#70](https://github.com/LPGhatguy/rojo/pull/70))
+* Server will now issue a warning if no partitions are specified in `rojo serve` ([#40](https://github.com/LPGhatguy/rojo/issues/40))
 
 ## 0.4.6 (May 21, 2018)
 * Rojo handles being restarted by Roblox Studio more gracefully ([#67](https://github.com/LPGhatguy/rojo/issues/67))
@@ -25,11 +38,11 @@
 ## 0.4.3 (April 7, 2018)
 * Plugin now automatically selects `HttpService` if it determines that HTTP isn't enabled ([#58](https://github.com/LPGhatguy/rojo/pull/58))
 * Plugin now has much more robust handling and will wipe all state when the server changes.
-	* This should fix issues that would otherwise be solved by restarting Roblox Studio.
+    * This should fix issues that would otherwise be solved by restarting Roblox Studio.
 
 ## 0.4.2 (April 4, 2018)
 * Fixed final case of duplicated instance insertion, caused by reconciled instances not being inserted into `RouteMap`.
-	* The reconciler is still not a perfect solution, especially if script instances get moved around without being destroyed. I don't think this can be fixed before a big refactor.
+    * The reconciler is still not a perfect solution, especially if script instances get moved around without being destroyed. I don't think this can be fixed before a big refactor.
 
 ## 0.4.1 (April 1, 2018)
 * Merged plugin repository into main Rojo repository for easier tracking.
@@ -37,9 +50,9 @@
 
 ## 0.4.0 (March 27, 2018)
 * Protocol version 1, which shifts more responsibility onto the server
-	* This is a **major breaking** change!
+    * This is a **major breaking** change!
-	* The server now has a content of 'filter plugins', which transform data at various stages in the pipeline
+    * The server now has a content of 'filter plugins', which transform data at various stages in the pipeline
-	* The server now exposes Roblox instance objects instead of file contents, which lines up with how `rojo pack` will work, and paves the way for more robust syncing.
+    * The server now exposes Roblox instance objects instead of file contents, which lines up with how `rojo pack` will work, and paves the way for more robust syncing.
 * Added `*.model.json` files, which let you embed small Roblox objects into your Rojo tree.
 * Improved error messages in some cases ([#46](https://github.com/LPGhatguy/rojo/issues/46))
 
@@ -49,18 +62,18 @@
 
 ## 0.3.1 (December 14, 2017)
 * Improved error reporting when invalid JSON is found in a `rojo.json` project
-	* These messages are passed on from Serde
+    * These messages are passed on from Serde
 
 ## 0.3.0 (December 12, 2017)
 * Factored out the plugin into a separate repository
 * Fixed server when using a file as a partition
-	* Previously, trailing slashes were put on the end of a partition even if the read request was an empty string. This broke file reading on Windows when a partition pointed to a file instead of a directory!
+    * Previously, trailing slashes were put on the end of a partition even if the read request was an empty string. This broke file reading on Windows when a partition pointed to a file instead of a directory!
 * Started running automatic tests on Travis CI (#9)
 
 ## 0.2.3 (December 4, 2017)
 * Plugin only release
 * Tightened `init` file rules to only match script files
-	* Previously, Rojo would sometimes pick up the wrong file when syncing
+    * Previously, Rojo would sometimes pick up the wrong file when syncing
 
 ## 0.2.2 (December 1, 2017)
 * Plugin only release

README.md

@@ -8,7 +8,7 @@
     <a href="https://travis-ci.org/LPGhatguy/rojo">
         <img src="https://api.travis-ci.org/LPGhatguy/rojo.svg?branch=master" alt="Travis-CI Build Status" />
     </a>
-    <img src="https://img.shields.io/badge/latest_version-0.4.6-brightgreen.svg" alt="Current server version" />
+    <img src="https://img.shields.io/badge/latest_version-0.4.9-brightgreen.svg" alt="Current server version" />
     <a href="https://lpghatguy.github.io/rojo">
         <img src="https://img.shields.io/badge/documentation-website-brightgreen.svg" alt="Rojo Documentation" />
     </a>

docs/sync-details.md

@@ -26,13 +26,21 @@ Will turn into these instances in Roblox:
 ![Example of Roblox instances](/images/sync-example.png)
 
 ## Models
-Rojo supports a JSON model format for representing simple models. It's designed for instance types like `BindableEvent` or `*Value` objects, and is not suitable for larger models.
+Rojo supports a JSON model format for representing simple models. It's designed for instance types like `BindableEvent` or `Value` objects, and is not suitable for larger models.
+
+Rojo JSON models are stored in `.model.json` files.
+
+Starting in Rojo version **0.4.10**, model files named `init.model.json` that are located in folders will replace that folder, much like Rojo's `init.lua` support. This can be useful to version instances like `Tool` that tend to contain several instances as well as one or more scripts.
 
 !!! info
     In the future, Rojo will support `.rbxmx` models. See [issue #7](https://github.com/LPGhatguy/rojo/issues/7) for more details and updates on this feature.
 
-JSON model files are strict, with every property being required. They look like this:
+!!! warning
+    Prior to Rojo version **0.4.9**, the `Properties` and `Children` properties are required on all instances in JSON models!
 
+JSON model files are fairly strict; any syntax errors will cause the model to fail to sync! They look like this:
+
+`hello.model.json`
 ```json
 {
     "Name": "hello",
@@ -40,14 +48,11 @@ JSON model files are strict, with every property being required. They look like
     "Children": [
         {
             "Name": "Some Part",
-            "ClassName": "Part",
+            "ClassName": "Part"
-            "Children": [],
-            "Properties": {}
         },
         {
             "Name": "Some StringValue",
             "ClassName": "StringValue",
-            "Children": [],
             "Properties": {
                 "Value": {
                     "Type": "String",
@@ -55,7 +60,6 @@ JSON model files are strict, with every property being required. They look like
                 }
             }
         }
-    ],
+    ]
-    "Properties": {}
 }
 ```

plugin/.luacheckrc

@@ -39,10 +39,6 @@ stds.testez = {
 
 ignore = {
 	"212", -- unused arguments
-	"421", -- shadowing local variable
-	"422", -- shadowing argument
-	"431", -- shadowing upvalue
-	"432", -- shadowing upvalue argument
 }
 
 std = "lua51+roblox"

plugin/src/Api.lua

@@ -35,6 +35,9 @@ function Api.connect(http)
 	setmetatable(context, Api)
 
 	return context:_start()
+		:andThen(function()
+			return context
+		end)
 end
 
 function Api:_start()
@@ -60,8 +63,6 @@ function Api:_start()
 
 			self.serverId = response.serverId
 			self.currentTime = response.currentTime
-
-			return self
 		end)
 end
 

plugin/src/Config.lua

@@ -1,7 +1,12 @@
 return {
 	pollingRate = 0.2,
-	version = {0, 4, 6},
+	version = {0, 4, 9},
 	expectedServerVersionString = "0.4.x",
 	protocolVersion = 1,
+	icons = {
+		syncIn = "rbxassetid://1820320573",
+		togglePolling = "rbxassetid://1820320064",
+		testConnection = "rbxassetid://1820320989",
+	},
 	dev = false,
 }

plugin/src/Main.server.lua

@@ -45,7 +45,7 @@ local function main()
 
 	local toolbar = plugin:CreateToolbar("Rojo Plugin " .. displayedVersion)
 
-	toolbar:CreateButton("Test Connection", "Connect to Rojo Server", "")
+	toolbar:CreateButton("Test Connection", "Connect to Rojo Server", Config.icons.testConnection)
 		.Click:Connect(function()
 			checkUpgrade()
 
@@ -55,7 +55,7 @@ local function main()
 				end)
 		end)
 
-	toolbar:CreateButton("Sync In", "Sync into Roblox Studio", "")
+	toolbar:CreateButton("Sync In", "Sync into Roblox Studio", Config.icons.syncIn)
 		.Click:Connect(function()
 			checkUpgrade()
 
@@ -65,7 +65,7 @@ local function main()
 				end)
 		end)
 
-	toolbar:CreateButton("Toggle Polling", "Poll server for changes", "")
+	toolbar:CreateButton("Toggle Polling", "Poll server for changes", Config.icons.togglePolling)
 		.Click:Connect(function()
 			checkUpgrade()
 

plugin/src/Plugin.lua

@@ -8,6 +8,9 @@ local Api = require(script.Parent.Api)
 local Reconciler = require(script.Parent.Reconciler)
 local Version = require(script.Parent.Version)
 
+local MESSAGE_SERVER_CHANGED = "Rojo: The server has changed since the last request, reloading plugin..."
+local MESSAGE_PLUGIN_CHANGED = "Rojo: Another instance of Rojo came online, unloading..."
+
 local function collectMatch(source, pattern)
 	local result = {}
 
@@ -80,6 +83,7 @@ function Plugin.new()
 		-- object.
 		screenGui.AncestryChanged:Connect(function(_, parent)
 			if parent == nil then
+				warn(MESSAGE_PLUGIN_CHANGED)
 				self:restart()
 			end
 		end)
@@ -93,8 +97,6 @@ end
 	restarted.
 ]]
 function Plugin:restart()
-	warn("Rojo: The server has changed since the last request, reloading plugin...")
-
 	self:stopPolling()
 
 	self._reconciler:destruct()
@@ -105,22 +107,25 @@ function Plugin:restart()
 	self._syncInProgress = false
 end
 
-function Plugin:api()
+function Plugin:getApi()
-	if not self._api then
+	if self._api == nil then
-		self._api = Api.connect(self._http)
+		return Api.connect(self._http)
-			:catch(function(err)
+			:andThen(function(api)
-				self._api = nil
+				self._api = api
+
+				return api
+			end, function(err)
 				return Promise.reject(err)
 			end)
 	end
 
-	return self._api
+	return Promise.resolve(self._api)
 end
 
 function Plugin:connect()
 	print("Rojo: Testing connection...")
 
-	return self:api()
+	return self:getApi()
 		:andThen(function(api)
 			local ok, info = api:getInfo():await()
 
@@ -134,6 +139,7 @@ function Plugin:connect()
 		end)
 		:catch(function(err)
 			if err == Api.Error.ServerIdMismatch then
+				warn(MESSAGE_SERVER_CHANGED)
 				self:restart()
 				return self:connect()
 			else
@@ -204,25 +210,25 @@ function Plugin:startPolling()
 		return
 	end
 
-	print("Rojo: Polling server for changes...")
+	print("Rojo: Starting to poll server for changes...")
 
 	self._polling = true
 	self._label.Enabled = true
 
-	return self:api()
+	return self:getApi()
 		:andThen(function(api)
-			local syncOk, result = self:syncIn():await()
-
-			if not syncOk then
-				return Promise.reject(result)
-			end
-
 			local infoOk, info = api:getInfo():await()
 
 			if not infoOk then
 				return Promise.reject(info)
 			end
 
+			local syncOk, result = self:syncIn():await()
+
+			if not syncOk then
+				return Promise.reject(result)
+			end
+
 			while self._polling do
 				local changesOk, changes = api:getChanges():await()
 
@@ -248,12 +254,12 @@ function Plugin:startPolling()
 			end
 		end)
 		:catch(function(err)
-			self:stopPolling()
-
 			if err == Api.Error.ServerIdMismatch then
+				warn(MESSAGE_SERVER_CHANGED)
 				self:restart()
 				return self:startPolling()
 			else
+				self:stopPolling()
 				return Promise.reject(err)
 			end
 		end)
@@ -269,7 +275,7 @@ function Plugin:syncIn()
 	self._syncInProgress = true
 	print("Rojo: Syncing from server...")
 
-	return self:api()
+	return self:getApi()
 		:andThen(function(api)
 			local ok, info = api:getInfo():await()
 
@@ -292,6 +298,7 @@ function Plugin:syncIn()
 			self._syncInProgress = false
 
 			if err == Api.Error.ServerIdMismatch then
+				warn(MESSAGE_SERVER_CHANGED)
 				self:restart()
 				return self:syncIn()
 			else

plugin/src/Reconciler.lua

@@ -1,6 +1,9 @@
 local RouteMap = require(script.Parent.RouteMap)
 
 local function classEqual(a, b)
+	assert(typeof(a) == "string")
+	assert(typeof(b) == "string")
+
 	if a == "*" or b == "*" then
 		return true
 	end
@@ -9,6 +12,9 @@ local function classEqual(a, b)
 end
 
 local function applyProperties(target, properties)
+	assert(typeof(target) == "Instance")
+	assert(typeof(properties) == "table")
+
 	for key, property in pairs(properties) do
 		-- TODO: Transform property value based on property.Type
 		-- Right now, we assume that 'value' is primitive!
@@ -22,18 +28,19 @@ end
 	* Changing parent threw an error
 ]]
 local function reparent(rbx, parent)
-	if rbx then
+	assert(typeof(rbx) == "Instance")
-		if rbx.Parent == parent then
+	assert(typeof(parent) == "Instance")
-			return
-		end
 
-		-- It's possible that 'rbx' is a service or some other object that we
+	if rbx.Parent == parent then
-		-- can't change the parent of. That's the only reason why Parent would
+		return
-		-- fail except for rbx being previously destroyed!
-		pcall(function()
-			rbx.Parent = parent
-		end)
 	end
+
+	-- Setting `Parent` can fail if:
+	-- * The object has been destroyed
+	-- * The object is a service and cannot be reparented
+	pcall(function()
+		rbx.Parent = parent
+	end)
 end
 
 --[[
@@ -94,22 +101,30 @@ function Reconciler:_reconcileChildren(rbx, item)
 	while true do
 		local itemChild, rbxChild = findNextChildPair(item.Children, rbxChildren, visited)
 
-		if not itemChild then
+		if itemChild == nil then
 			break
 		end
 
-		reparent(self:reconcile(rbxChild, itemChild), rbx)
+		local newRbxChild = self:reconcile(rbxChild, itemChild)
+
+		if newRbxChild ~= nil then
+			newRbxChild.Parent = rbx
+		end
 	end
 
 	-- Reconcile any children that were deleted
 	while true do
 		local rbxChild, itemChild = findNextChildPair(rbxChildren, item.Children, visited)
 
-		if not rbxChild then
+		if rbxChild == nil then
 			break
 		end
 
-		reparent(self:reconcile(rbxChild, itemChild), rbx)
+		local newRbxChild = self:reconcile(rbxChild, itemChild)
+
+		if newRbxChild ~= nil then
+			newRbxChild.Parent = rbx
+		end
 	end
 end
 
@@ -133,7 +148,7 @@ function Reconciler:_reify(item)
 		reparent(self:_reify(child), rbx)
 	end
 
-	if item.Route then
+	if item.Route ~= nil then
 		self._routeMap:insert(item.Route, rbx)
 	end
 
@@ -153,8 +168,8 @@ end
 ]]
 function Reconciler:reconcile(rbx, item)
 	-- Item was deleted
-	if not item then
+	if item == nil then
-		if rbx then
+		if rbx ~= nil then
 			self._routeMap:removeByRbx(rbx)
 			rbx:Destroy()
 		end
@@ -163,7 +178,7 @@ function Reconciler:reconcile(rbx, item)
 	end
 
 	-- Item was created!
-	if not rbx then
+	if rbx == nil then
 		return self:_reify(item)
 	end
 
@@ -191,13 +206,18 @@ function Reconciler:reconcileRoute(route, item, itemRoute)
 		local child = rbx:FindFirstChild(piece)
 
 		-- We should get services instead of making folders here.
-		if rbx == game and not child then
+		if rbx == game and child == nil then
-			local _
+			local success
-			_, child = pcall(game.GetService, game, piece)
+			success, child = pcall(game.GetService, game, piece)
+
+			-- That isn't a valid service!
+			if not success then
+				child = nil
+			end
 		end
 
 		-- We don't want to create a folder if we're reaching our target item!
-		if not child and i ~= #route then
+		if child == nil and i ~= #route then
 			child = Instance.new("Folder")
 			child.Parent = rbx
 			child.Name = piece
@@ -208,7 +228,7 @@ function Reconciler:reconcileRoute(route, item, itemRoute)
 	end
 
 	-- Let's check the route map!
-	if not rbx then
+	if rbx == nil then
 		rbx = self._routeMap:get(itemRoute)
 	end
 

plugin/src/RouteMap.lua

@@ -47,7 +47,7 @@ function RouteMap:removeByRoute(route)
 	local rbx = self._map[hashedRoute]
 
 	if rbx ~= nil then
-		self:_removeInternal(hashedRoute, rbx)
+		self:_removeInternal(rbx, hashedRoute)
 	end
 end
 
@@ -55,7 +55,7 @@ function RouteMap:removeByRbx(rbx)
 	local hashedRoute = self._reverseMap[rbx]
 
 	if hashedRoute ~= nil then
-		self:_removeInternal(hashedRoute, rbx)
+		self:_removeInternal(rbx, hashedRoute)
 	end
 end
 
@@ -68,7 +68,7 @@ function RouteMap:_removeInternal(rbx, hashedRoute)
 	self._connectionsByRbx[rbx]:Disconnect()
 	self._connectionsByRbx[rbx] = nil
 
-	self:removeRbxDescendants(rbx)
+	self:_removeRbxDescendants(rbx)
 end
 
 --[[

server/Cargo.lock

@@ -636,7 +636,7 @@ dependencies = [
 
 [[package]]
 name = "rojo"
-version = "0.4.6"
+version = "0.4.10"
 dependencies = [
  "clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",

server/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rojo"
-version = "0.4.6"
+version = "0.4.10"
 authors = ["Lucien Greathouse <me@lpghatguy.com>"]
 description = "A tool to create robust Roblox projects"
 license = "MIT"

server/src/commands/serve.rs

@@ -44,6 +44,13 @@ pub fn serve(project_path: &PathBuf, verbose: bool, port: Option<u64>) {
         },
     };
 
+    if project.partitions.len() == 0 {
+        println!("");
+        println!("This project has no partitions and will not do anything when served!");
+        println!("This is usually a mistake -- edit rojo.json!");
+        println!("");
+    }
+
     lazy_static! {
         static ref PLUGIN_CHAIN: PluginChain = PluginChain::new(vec![
             Box::new(ScriptPlugin::new()),

server/src/plugin.rs

@@ -9,13 +9,6 @@ pub enum TransformFileResult {
     // TODO: Error case
 }
 
-pub enum RbxChangeResult {
-    Write(Option<VfsItem>),
-    Pass,
-
-    // TODO: Error case
-}
-
 pub enum FileChangeResult {
     MarkChanged(Option<Vec<Route>>),
     Pass,
@@ -26,10 +19,6 @@ pub trait Plugin {
     /// into a Roblox instance.
     fn transform_file(&self, plugins: &PluginChain, vfs_item: &VfsItem) -> TransformFileResult;
 
-    /// Invoked when a Roblox Instance change is reported by the Roblox Studio
-    /// plugin and needs to be turned into a file to save.
-    fn handle_rbx_change(&self, route: &Route, rbx_item: &RbxInstance) -> RbxChangeResult;
-
     /// Invoked when a file changes on the filesystem. The result defines what
     /// routes are marked as needing to be refreshed.
     fn handle_file_change(&self, route: &Route) -> FileChangeResult;
@@ -58,17 +47,6 @@ impl PluginChain {
         None
     }
 
-    pub fn handle_rbx_change(&self, route: &Route, rbx_item: &RbxInstance) -> Option<VfsItem> {
-        for plugin in &self.plugins {
-            match plugin.handle_rbx_change(route, rbx_item) {
-                RbxChangeResult::Write(vfs_item) => return vfs_item,
-                RbxChangeResult::Pass => {},
-            }
-        }
-
-        None
-    }
-
     pub fn handle_file_change(&self, route: &Route) -> Option<Vec<Route>> {
         for plugin in &self.plugins {
             match plugin.handle_file_change(route) {

server/src/plugins/default_plugin.rs

@@ -1,7 +1,7 @@
 use std::collections::HashMap;
 
 use core::Route;
-use plugin::{Plugin, PluginChain, TransformFileResult, RbxChangeResult, FileChangeResult};
+use plugin::{Plugin, PluginChain, TransformFileResult, FileChangeResult};
 use rbx::{RbxInstance, RbxValue};
 use vfs::VfsItem;
 
@@ -60,8 +60,4 @@ impl Plugin for DefaultPlugin {
     fn handle_file_change(&self, route: &Route) -> FileChangeResult {
         FileChangeResult::MarkChanged(Some(vec![route.clone()]))
     }
-
-    fn handle_rbx_change(&self, _route: &Route, _rbx_item: &RbxInstance) -> RbxChangeResult {
-        RbxChangeResult::Pass
-    }
 }

server/src/plugins/json_model_plugin.rs

@@ -2,7 +2,7 @@ use regex::Regex;
 use serde_json;
 
 use core::Route;
-use plugin::{Plugin, PluginChain, TransformFileResult, RbxChangeResult, FileChangeResult};
+use plugin::{Plugin, PluginChain, TransformFileResult, FileChangeResult};
 use rbx::RbxInstance;
 use vfs::VfsItem;
 
@@ -10,6 +10,8 @@ lazy_static! {
     static ref JSON_MODEL_PATTERN: Regex = Regex::new(r"^(.*?)\.model\.json$").unwrap();
 }
 
+static JSON_MODEL_INIT: &'static str = "init.model.json";
+
 pub struct JsonModelPlugin;
 
 impl JsonModelPlugin {
@@ -19,7 +21,7 @@ impl JsonModelPlugin {
 }
 
 impl Plugin for JsonModelPlugin {
-    fn transform_file(&self, _plugins: &PluginChain, vfs_item: &VfsItem) -> TransformFileResult {
+    fn transform_file(&self, plugins: &PluginChain, vfs_item: &VfsItem) -> TransformFileResult {
         match vfs_item {
             &VfsItem::File { ref contents, .. } => {
                 let rbx_name = match JSON_MODEL_PATTERN.captures(vfs_item.name()) {
@@ -41,15 +43,56 @@ impl Plugin for JsonModelPlugin {
 
                 TransformFileResult::Value(Some(rbx_item))
             },
-            &VfsItem::Dir { .. } => TransformFileResult::Pass,
+            &VfsItem::Dir { ref children, .. } => {
+                let init_item = match children.get(JSON_MODEL_INIT) {
+                    Some(v) => v,
+                    None => return TransformFileResult::Pass,
+                };
+
+                let mut rbx_item = match self.transform_file(plugins, init_item) {
+                    TransformFileResult::Value(Some(item)) => item,
+                    TransformFileResult::Value(None) | TransformFileResult::Pass => {
+                        eprintln!("Inconsistency detected in JsonModelPlugin!");
+                        return TransformFileResult::Pass;
+                    },
+                };
+
+                rbx_item.name.clear();
+                rbx_item.name.push_str(vfs_item.name());
+
+                for (child_name, child_item) in children {
+                    if child_name == init_item.name() {
+                        continue;
+                    }
+
+                    match plugins.transform_file(child_item) {
+                        Some(child_rbx_item) => {
+                            rbx_item.children.push(child_rbx_item);
+                        },
+                        _ => {},
+                    }
+                }
+
+                TransformFileResult::Value(Some(rbx_item))
+            },
         }
     }
 
-    fn handle_file_change(&self, _route: &Route) -> FileChangeResult {
+    fn handle_file_change(&self, route: &Route) -> FileChangeResult {
-        FileChangeResult::Pass
+        let leaf = match route.last() {
-    }
+            Some(v) => v,
+            None => return FileChangeResult::Pass,
+        };
 
-    fn handle_rbx_change(&self, _route: &Route, _rbx_item: &RbxInstance) -> RbxChangeResult {
+        let is_init = leaf == JSON_MODEL_INIT;
-        RbxChangeResult::Pass
+
+        if is_init {
+            let mut changed = route.clone();
+            changed.pop();
+
+            FileChangeResult::MarkChanged(Some(vec![changed]))
+        } else {
+            FileChangeResult::Pass
+        }
     }
 }

server/src/plugins/script_plugin.rs

@@ -3,7 +3,7 @@ use std::collections::HashMap;
 use regex::Regex;
 
 use core::Route;
-use plugin::{Plugin, PluginChain, TransformFileResult, RbxChangeResult, FileChangeResult};
+use plugin::{Plugin, PluginChain, TransformFileResult, FileChangeResult};
 use rbx::{RbxInstance, RbxValue};
 use vfs::VfsItem;
 
@@ -117,8 +117,4 @@ impl Plugin for ScriptPlugin {
             FileChangeResult::Pass
         }
     }
-
-    fn handle_rbx_change(&self, _route: &Route, _rbx_item: &RbxInstance) -> RbxChangeResult {
-        RbxChangeResult::Pass
-    }
 }

server/src/rbx.rs

@@ -6,7 +6,11 @@ use std::collections::HashMap;
 pub struct RbxInstance {
     pub name: String,
     pub class_name: String,
+
+    #[serde(default = "Vec::new")]
     pub children: Vec<RbxInstance>,
+
+    #[serde(default = "HashMap::new")]
     pub properties: HashMap<String, RbxValue>,
 
     /// The route that this instance was generated from, if there was one.

test-project/src/SomeTool/SomeTool.client.lua

@@ -0,0 +1 @@
+print("Hello, world, from my tool!")

test-project/src/SomeTool/init.model.json

@@ -0,0 +1,4 @@
+{
+  "Name": "SomeTool",
+  "ClassName": "Tool"
+}

test-project/src/hello.model.json

@@ -4,14 +4,11 @@
   "Children": [
     {
       "Name": "Some Part",
-      "ClassName": "Part",
+      "ClassName": "Part"
-      "Children": [],
-      "Properties": {}
     },
     {
       "Name": "Some StringValue",
       "ClassName": "StringValue",
-      "Children": [],
       "Properties": {
         "Value": {
           "Type": "String",
@@ -19,6 +16,5 @@
         }
       }
     }
-  ],
+  ]
-  "Properties": {}
 }