Add --git-since option to rojo serve

- Add new GitFilter struct for tracking files changed since a Git reference
- Only sync changed (added/deleted/modified) files to Roblox Studio
- Files remain acknowledged once synced, even if content is reverted
- Add enhanced logging for debugging sync issues
- Force acknowledge project structure to prevent 'Cannot sync a model as a place' errors

.github/workflows/release.yml

@@ -45,13 +45,6 @@ jobs:
           name: Rojo.rbxm
           path: Rojo.rbxm
 
-      - name: Upload Plugin to Roblox
-        env:
-          RBX_API_KEY: ${{ secrets.PLUGIN_UPLOAD_TOKEN }}
-          RBX_UNIVERSE_ID: ${{ vars.PLUGIN_CI_PLACE_ID }}
-          RBX_PLACE_ID: ${{ vars.PLUGIN_CI_UNIVERSE_ID }}
-        run: lune run upload-plugin Rojo.rbxm
-
   build:
     needs: ["create-release"]
     strategy:

.gitignore

@@ -23,6 +23,3 @@
 # Macos file system junk
 ._*
 .DS_STORE
-
-# JetBrains IDEs
-/.idea/

.gitmodules

@@ -16,9 +16,3 @@
 [submodule "plugin/Packages/Highlighter"]
 	path = plugin/Packages/Highlighter
 	url = https://github.com/boatbomber/highlighter.git
-[submodule "plugin/Packages/msgpack-luau"]
-	path = plugin/Packages/msgpack-luau
-	url = https://github.com/cipharius/msgpack-luau/
-[submodule ".lune/opencloud-execute"]
-	path = .lune/opencloud-execute
-	url = https://github.com/Dekkonot/opencloud-luau-execute-lune.git

.lune/.config.luau

@@ -1,8 +0,0 @@
-return {
-	luau = {
-		languagemode = "strict",
-		aliases = {
-			lune = "~/.lune/.typedefs/0.10.4/",
-		},
-	},
-}

.lune/scripts/plugin-upload.luau

@@ -1,51 +0,0 @@
-local args: any = ...
-assert(args, "no arguments passed to script")
-
-local input: buffer = args.BinaryInput
-
-local AssetService = game:GetService("AssetService")
-local SerializationService = game:GetService("SerializationService")
-local EncodingService = game:GetService("EncodingService")
-
-local input_hash: buffer = EncodingService:ComputeBufferHash(input, Enum.HashAlgorithm.Sha256)
-local hex_hash: { string } = table.create(buffer.len(input_hash))
-for i = 0, buffer.len(input_hash) - 1 do
-	table.insert(hex_hash, string.format("%02x", buffer.readu8(input_hash, i)))
-end
-
-print(`Deserializing plugin file (size: {buffer.len(input)} bytes, hash: {table.concat(hex_hash, "")})`)
-local plugin = SerializationService:DeserializeInstancesAsync(input)[1]
-
-local UploadDetails = require(plugin.UploadDetails) :: any
-local PLUGIN_ID = UploadDetails.assetId
-local PLUGIN_NAME = UploadDetails.name
-local PLUGIN_DESCRIPTION = UploadDetails.description
-local PLUGIN_CREATOR_ID = UploadDetails.creatorId
-local PLUGIN_CREATOR_TYPE = UploadDetails.creatorType
-
-assert(typeof(PLUGIN_ID) == "number", "UploadDetails did not contain a number field 'assetId'")
-assert(typeof(PLUGIN_NAME) == "string", "UploadDetails did not contain a string field 'name'")
-assert(typeof(PLUGIN_DESCRIPTION) == "string", "UploadDetails did not contain a string field 'description'")
-assert(typeof(PLUGIN_CREATOR_ID) == "number", "UploadDetails did not contain a number field 'creatorId'")
-assert(typeof(PLUGIN_CREATOR_TYPE) == "string", "UploadDetails did not contain a string field 'creatorType'")
-assert(
-	Enum.AssetCreatorType:FromName(PLUGIN_CREATOR_TYPE) ~= nil,
-	"UploadDetails field 'creatorType' was not a valid member of Enum.AssetCreatorType"
-)
-
-print(`Uploading to {PLUGIN_ID}`)
-print(`Plugin Name: {PLUGIN_NAME}`)
-print(`Plugin Description: {PLUGIN_DESCRIPTION}`)
-
-local result, version_or_err = AssetService:CreateAssetVersionAsync(plugin, Enum.AssetType.Plugin, PLUGIN_ID, {
-	["Name"] = PLUGIN_NAME,
-	["Description"] = PLUGIN_DESCRIPTION,
-	["CreatorId"] = PLUGIN_CREATOR_ID,
-	["CreatorType"] = Enum.AssetCreatorType:FromName(PLUGIN_CREATOR_TYPE),
-})
-
-if result ~= Enum.CreateAssetResult.Success then
-	error(`Plugin failed to upload because: {result.Name} - {version_or_err}`)
-end
-
-print(`Plugin uploaded successfully. New version is {version_or_err}.`)

.lune/upload-plugin.luau

@@ -1,78 +0,0 @@
-local fs = require("@lune/fs")
-local process = require("@lune/process")
-local stdio = require("@lune/stdio")
-
-local luau_execute = require("./opencloud-execute")
-
-local UNIVERSE_ID = process.env["RBX_UNIVERSE_ID"]
-local PLACE_ID = process.env["RBX_PLACE_ID"]
-
-local version_string = fs.readFile("plugin/Version.txt")
-local versions = { string.match(version_string, "^v?(%d+)%.(%d+)%.(%d+)(.*)$") }
-if versions[4] ~= "" then
-	print("This release is a pre-release. Skipping uploading plugin.")
-	process.exit(0)
-end
-
-local plugin_path = process.args[1]
-assert(
-	typeof(plugin_path) == "string",
-	"no plugin path provided, expected usage is `lune run upload-plugin [PATH TO RBXM]`."
-)
-
--- For local testing
-if process.env["CI"] ~= "true" then
-	local rojo = process.exec("rojo", { "build", "plugin.project.json", "--output", plugin_path })
-	if not rojo.ok then
-		stdio.ewrite("plugin upload failed because: could not build plugin.rbxm\n\n")
-		stdio.ewrite(rojo.stderr)
-		stdio.ewrite("\n")
-		process.exit(1)
-	end
-else
-	assert(fs.isFile(plugin_path), `Plugin file did not exist at {plugin_path}`)
-end
-local plugin_content = fs.readFile(plugin_path)
-
-local engine_script = fs.readFile(".lune/scripts/plugin-upload.luau")
-
-print("Creating task to upload plugin")
-local task = luau_execute.create_task_latest(UNIVERSE_ID, PLACE_ID, engine_script, 300, false, plugin_content)
-
-print("Waiting for task to finish")
-local success = luau_execute.await_finish(task)
-if not success then
-	local error = luau_execute.get_error(task)
-	assert(error, "could not fetch error from task")
-	stdio.ewrite("plugin upload failed because: task did not finish successfully\n\n")
-	stdio.ewrite(error.code)
-	stdio.ewrite("\n")
-	stdio.ewrite(error.message)
-	stdio.ewrite("\n")
-	process.exit(1)
-end
-
-print("Output from task:\n")
-for _, log in luau_execute.get_structured_logs(task) do
-	if log.messageType == "ERROR" then
-		stdio.write(stdio.color("red"))
-		stdio.write(log.message)
-		stdio.write("\n")
-		stdio.write(stdio.color("reset"))
-	elseif log.messageType == "INFO" then
-		stdio.write(stdio.color("cyan"))
-		stdio.write(log.message)
-		stdio.write("\n")
-		stdio.write(stdio.color("reset"))
-	elseif log.messageType == "WARNING" then
-		stdio.write(stdio.color("yellow"))
-		stdio.write(log.message)
-		stdio.write("\n")
-		stdio.write(stdio.color("reset"))
-	else
-		stdio.write(stdio.color("reset"))
-		stdio.write(log.message)
-		stdio.write("\n")
-		stdio.write(stdio.color("reset"))
-	end
-end

CHANGELOG.md

@@ -30,24 +30,9 @@ Making a new release? Simply add the new header with the version and date undern
 -->
 
 ## Unreleased
-
-* `inf` and `nan` values in properties are now synced ([#1176])
 * Fixed a bug caused by having reference properties (such as `ObjectValue.Value`) that point to an Instance not included in syncback. ([#1179])
-* Fixed instance replacement fallback failing when too many instances needed to be replaced. ([#1192])
-* Added actors and bindable/remote event/function variants to be synced back as JSON files. ([#1199])
-* Fixed a bug where MacOS paths weren't being handled correctly. ([#1201])
-* Fixed a bug where the notification timeout thread would fail to cancel on unmount ([#1211])
-* Added a "Forget" option to the sync reminder notification to avoid being reminded for that place in the future ([#1215])
-* Improves relative path calculation for sourcemap generation to avoid issues with Windows UNC paths. ([#1217])
 
-[#1176]: https://github.com/rojo-rbx/rojo/pull/1176
 [#1179]: https://github.com/rojo-rbx/rojo/pull/1179
-[#1192]: https://github.com/rojo-rbx/rojo/pull/1192
-[#1199]: https://github.com/rojo-rbx/rojo/pull/1199
-[#1201]: https://github.com/rojo-rbx/rojo/pull/1201
-[#1211]: https://github.com/rojo-rbx/rojo/pull/1211
-[#1215]: https://github.com/rojo-rbx/rojo/pull/1215
-[#1217]: https://github.com/rojo-rbx/rojo/pull/1217
 
 ## [7.7.0-rc.1] (November 27th, 2025)
 

CONTRIBUTING.md

@@ -14,7 +14,6 @@ Code contributions are welcome for features and bugs that have been reported in
 You'll want these tools to work on Rojo:
 
 * Latest stable Rust compiler
-  * Rustfmt and Clippy are used for code formatting and linting.
 * Latest stable [Rojo](https://github.com/rojo-rbx/rojo)
 * [Rokit](https://github.com/rojo-rbx/rokit)
 * [Luau Language Server](https://github.com/JohnnyMorganz/luau-lsp) (Only needed if working on the Studio plugin.)

Cargo.lock

@@ -1319,7 +1319,6 @@ dependencies = [
  "fs-err",
  "notify",
  "serde",
- "tempfile",
 ]
 
 [[package]]
@@ -1520,12 +1519,6 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
-[[package]]
-name = "pathdiff"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df94ce210e5bc13cb6651479fa48d14f601d9858cfe0467f43ae157023b938d3"
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -2074,7 +2067,6 @@ dependencies = [
  "num_cpus",
  "opener",
  "paste",
- "pathdiff",
  "pretty_assertions",
  "profiling",
  "rayon",
@@ -2085,12 +2077,10 @@ dependencies = [
  "rbx_xml",
  "reqwest",
  "ritz",
- "rmp-serde",
  "roblox_install",
  "rojo-insta-ext",
  "semver",
  "serde",
- "serde_bytes",
  "serde_json",
  "serde_yaml",
  "strum",
@@ -2231,16 +2221,6 @@ dependencies = [
  "serde_derive",
 ]
 
-[[package]]
-name = "serde_bytes"
-version = "0.11.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5d440709e79d88e51ac01c4b72fc6cb7314017bb7da9eeff678aa94c10e3ea8"
-dependencies = [
- "serde",
- "serde_core",
-]
-
 [[package]]
 name = "serde_cbor"
 version = "0.11.2"

Cargo.toml

@@ -100,13 +100,10 @@ clap = { version = "3.2.25", features = ["derive"] }
 profiling = "1.0.15"
 yaml-rust2 = "0.10.3"
 data-encoding = "2.8.0"
-pathdiff = "0.2.3"
 
 blake3 = "1.5.0"
 float-cmp = "0.9.0"
 indexmap = { version = "2.10.0", features = ["serde"] }
-rmp-serde = "1.3.0"
-serde_bytes = "0.11.19"
 
 [target.'cfg(windows)'.dependencies]
 winreg = "0.10.1"
@@ -125,7 +122,7 @@ semver = "1.0.22"
 rojo-insta-ext = { path = "crates/rojo-insta-ext" }
 
 criterion = "0.3.6"
-insta = { version = "1.36.1", features = ["redactions", "yaml", "json"] }
+insta = { version = "1.36.1", features = ["redactions", "yaml"] }
 paste = "1.0.14"
 pretty_assertions = "1.4.0"
 serde_yaml = "0.8.26"

build.rs

@@ -30,11 +30,6 @@ fn snapshot_from_fs_path(path: &Path) -> io::Result<VfsSnapshot> {
                 continue;
             }
 
-            // Ignore images in msgpack-luau because they aren't UTF-8 encoded.
-            if file_name.ends_with(".png") {
-                continue;
-            }
-
             let child_snapshot = snapshot_from_fs_path(&entry.path())?;
             children.push((file_name, child_snapshot));
         }
@@ -75,7 +70,6 @@ fn main() -> Result<(), anyhow::Error> {
             "src" => snapshot_from_fs_path(&plugin_dir.join("src"))?,
             "Packages" => snapshot_from_fs_path(&plugin_dir.join("Packages"))?,
             "Version.txt" => snapshot_from_fs_path(&plugin_dir.join("Version.txt"))?,
-            "UploadDetails.json" => snapshot_from_fs_path(&plugin_dir.join("UploadDetails.json"))?,
         }),
     });
 

crates/memofs/CHANGELOG.md

@@ -1,7 +1,6 @@
 # memofs Changelog
 
 ## Unreleased Changes
-* Added `Vfs::canonicalize`. [#1201]
 
 ## 0.3.1 (2025-11-27)
 * Added `Vfs::exists`. [#1169]

crates/memofs/Cargo.toml

@@ -19,6 +19,3 @@ crossbeam-channel = "0.5.12"
 fs-err = "2.11.0"
 notify = "4.0.17"
 serde = { version = "1.0.197", features = ["derive"] }
-
-[dev-dependencies]
-tempfile = "3.10.1"

crates/memofs/src/in_memory_fs.rs

@@ -232,33 +232,6 @@ impl VfsBackend for InMemoryFs {
         }
     }
 
-    // TODO: We rely on Rojo to prepend cwd to any relative path before storing paths
-    // in MemoFS. The current implementation will error if no prepended absolute path
-    // is found. It really only normalizes paths within the provided path's context.
-    // Example: "/Users/username/project/../other/file.txt" ->
-    // "/Users/username/other/file.txt"
-    // Erroneous example: "/Users/../../other/file.txt" -> "/other/file.txt"
-    // This is not very robust. We should implement proper path normalization here or otherwise
-    // warn if we are missing context and can not fully canonicalize the path correctly.
-    fn canonicalize(&mut self, path: &Path) -> io::Result<PathBuf> {
-        let mut normalized = PathBuf::new();
-        for component in path.components() {
-            match component {
-                std::path::Component::ParentDir => {
-                    normalized.pop();
-                }
-                std::path::Component::CurDir => {}
-                _ => normalized.push(component),
-            }
-        }
-
-        let inner = self.inner.lock().unwrap();
-        match inner.entries.get(&normalized) {
-            Some(_) => Ok(normalized),
-            None => not_found(&normalized),
-        }
-    }
-
     fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent> {
         let inner = self.inner.lock().unwrap();
 

crates/memofs/src/lib.rs

@@ -77,7 +77,6 @@ pub trait VfsBackend: sealed::Sealed + Send + 'static {
     fn metadata(&mut self, path: &Path) -> io::Result<Metadata>;
     fn remove_file(&mut self, path: &Path) -> io::Result<()>;
     fn remove_dir_all(&mut self, path: &Path) -> io::Result<()>;
-    fn canonicalize(&mut self, path: &Path) -> io::Result<PathBuf>;
 
     fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent>;
     fn watch(&mut self, path: &Path) -> io::Result<()>;
@@ -226,11 +225,6 @@ impl VfsInner {
         self.backend.metadata(path)
     }
 
-    fn canonicalize<P: AsRef<Path>>(&mut self, path: P) -> io::Result<PathBuf> {
-        let path = path.as_ref();
-        self.backend.canonicalize(path)
-    }
-
     fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent> {
         self.backend.event_receiver()
     }
@@ -419,19 +413,6 @@ impl Vfs {
         self.inner.lock().unwrap().metadata(path)
     }
 
-    /// Normalize a path via the underlying backend.
-    ///
-    /// Roughly equivalent to [`std::fs::canonicalize`][std::fs::canonicalize]. Relative paths are
-    /// resolved against the backend's current working directory (if applicable) and errors are
-    /// surfaced directly from the backend.
-    ///
-    /// [std::fs::canonicalize]: https://doc.rust-lang.org/stable/std/fs/fn.canonicalize.html
-    #[inline]
-    pub fn canonicalize<P: AsRef<Path>>(&self, path: P) -> io::Result<PathBuf> {
-        let path = path.as_ref();
-        self.inner.lock().unwrap().canonicalize(path)
-    }
-
     /// Retrieve a handle to the event receiver for this `Vfs`.
     #[inline]
     pub fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent> {
@@ -559,13 +540,6 @@ impl VfsLock<'_> {
         self.inner.metadata(path)
     }
 
-    /// Normalize a path via the underlying backend.
-    #[inline]
-    pub fn normalize<P: AsRef<Path>>(&mut self, path: P) -> io::Result<PathBuf> {
-        let path = path.as_ref();
-        self.inner.canonicalize(path)
-    }
-
     /// Retrieve a handle to the event receiver for this `Vfs`.
     #[inline]
     pub fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent> {
@@ -581,9 +555,7 @@ impl VfsLock<'_> {
 
 #[cfg(test)]
 mod test {
-    use crate::{InMemoryFs, StdBackend, Vfs, VfsSnapshot};
+    use crate::{InMemoryFs, Vfs, VfsSnapshot};
-    use std::io;
-    use std::path::PathBuf;
 
     /// https://github.com/rojo-rbx/rojo/issues/899
     #[test]
@@ -599,62 +571,4 @@ mod test {
             "bar\nfoo\n\n"
         );
     }
-
-    /// https://github.com/rojo-rbx/rojo/issues/1200
-    #[test]
-    fn canonicalize_in_memory_success() {
-        let mut imfs = InMemoryFs::new();
-        let contents = "Lorem ipsum dolor sit amet.".to_string();
-
-        imfs.load_snapshot("/test/file.txt", VfsSnapshot::file(contents.to_string()))
-            .unwrap();
-
-        let vfs = Vfs::new(imfs);
-
-        assert_eq!(
-            vfs.canonicalize("/test/nested/../file.txt").unwrap(),
-            PathBuf::from("/test/file.txt")
-        );
-        assert_eq!(
-            vfs.read_to_string(vfs.canonicalize("/test/nested/../file.txt").unwrap())
-                .unwrap()
-                .to_string(),
-            contents.to_string()
-        );
-    }
-
-    #[test]
-    fn canonicalize_in_memory_missing_errors() {
-        let imfs = InMemoryFs::new();
-        let vfs = Vfs::new(imfs);
-
-        let err = vfs.canonicalize("test").unwrap_err();
-        assert_eq!(err.kind(), io::ErrorKind::NotFound);
-    }
-
-    #[test]
-    fn canonicalize_std_backend_success() {
-        let contents = "Lorem ipsum dolor sit amet.".to_string();
-        let dir = tempfile::tempdir().unwrap();
-        let file_path = dir.path().join("file.txt");
-        fs_err::write(&file_path, contents.to_string()).unwrap();
-
-        let vfs = Vfs::new(StdBackend::new());
-        let canonicalized = vfs.canonicalize(&file_path).unwrap();
-        assert_eq!(canonicalized, file_path.canonicalize().unwrap());
-        assert_eq!(
-            vfs.read_to_string(&canonicalized).unwrap().to_string(),
-            contents.to_string()
-        );
-    }
-
-    #[test]
-    fn canonicalize_std_backend_missing_errors() {
-        let dir = tempfile::tempdir().unwrap();
-        let file_path = dir.path().join("test");
-
-        let vfs = Vfs::new(StdBackend::new());
-        let err = vfs.canonicalize(&file_path).unwrap_err();
-        assert_eq!(err.kind(), io::ErrorKind::NotFound);
-    }
 }

crates/memofs/src/noop_backend.rs

@@ -1,5 +1,5 @@
 use std::io;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 
 use crate::{Metadata, ReadDir, VfsBackend, VfsEvent};
 
@@ -50,10 +50,6 @@ impl VfsBackend for NoopBackend {
         Err(io::Error::other("NoopBackend doesn't do anything"))
     }
 
-    fn canonicalize(&mut self, _path: &Path) -> io::Result<PathBuf> {
-        Err(io::Error::other("NoopBackend doesn't do anything"))
-    }
-
     fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent> {
         crossbeam_channel::never()
     }

crates/memofs/src/std_backend.rs

@@ -106,10 +106,6 @@ impl VfsBackend for StdBackend {
         })
     }
 
-    fn canonicalize(&mut self, path: &Path) -> io::Result<PathBuf> {
-        fs_err::canonicalize(path)
-    }
-
     fn event_receiver(&self) -> crossbeam_channel::Receiver<VfsEvent> {
         self.watcher_receiver.clone()
     }

plugin.project.json

@@ -22,9 +22,6 @@
     },
     "Version": {
       "$path": "plugin/Version.txt"
-    },
-    "UploadDetails": {
-      "$path": "plugin/UploadDetails.json"
     }
   }
 }

plugin/UploadDetails.json

@@ -1,7 +0,0 @@
-{
-  "assetId": 13916111004,
-  "name": "Rojo",
-  "description": "The plugin portion of Rojo, a tool to enable professional tooling for Roblox developers.",
-  "creatorId": 32644114,
-  "creatorType": "Group"
-}

plugin/http/Response.lua

@@ -1,7 +1,5 @@
 local HttpService = game:GetService("HttpService")
 
-local msgpack = require(script.Parent.Parent.msgpack)
-
 local stringTemplate = [[
 Http.Response {
 	code: %d
@@ -33,8 +31,4 @@ function Response:json()
 	return HttpService:JSONDecode(self.body)
 end
 
-function Response:msgpack()
-	return msgpack.decode(self.body)
-end
-
 return Response

plugin/http/init.lua

@@ -1,8 +1,7 @@
 local HttpService = game:GetService("HttpService")
 
-local Log = require(script.Parent.Log)
-local msgpack = require(script.Parent.msgpack)
 local Promise = require(script.Parent.Promise)
+local Log = require(script.Parent.Log)
 
 local HttpError = require(script.Error)
 local HttpResponse = require(script.Response)
@@ -69,12 +68,4 @@ function Http.jsonDecode(source)
 	return HttpService:JSONDecode(source)
 end
 
-function Http.msgpackEncode(object)
-	return msgpack.encode(object)
-end
-
-function Http.msgpackDecode(source)
-	return msgpack.decode(source)
-end
-
 return Http

plugin/src/ApiContext.lua

@@ -145,7 +145,7 @@ function ApiContext:connect()
 
 	return Http.get(url)
 		:andThen(rejectFailedRequests)
-		:andThen(Http.Response.msgpack)
+		:andThen(Http.Response.json)
 		:andThen(rejectWrongProtocolVersion)
 		:andThen(function(body)
 			assert(validateApiInfo(body))
@@ -163,7 +163,7 @@ end
 function ApiContext:read(ids)
 	local url = ("%s/api/read/%s"):format(self.__baseUrl, table.concat(ids, ","))
 
-	return Http.get(url):andThen(rejectFailedRequests):andThen(Http.Response.msgpack):andThen(function(body)
+	return Http.get(url):andThen(rejectFailedRequests):andThen(Http.Response.json):andThen(function(body)
 		if body.sessionId ~= self.__sessionId then
 			return Promise.reject("Server changed ID")
 		end
@@ -191,9 +191,9 @@ function ApiContext:write(patch)
 		table.insert(updated, fixedUpdate)
 	end
 
-	-- Only add the 'added' field if the table is non-empty, or else the msgpack
+	-- Only add the 'added' field if the table is non-empty, or else Roblox's
-	-- encode implementation will turn the table into an array instead of a map,
+	-- JSON implementation will turn the table into an array instead of an
-	-- causing API validation to fail.
+	-- object, causing API validation to fail.
 	local added
 	if next(patch.added) ~= nil then
 		added = patch.added
@@ -206,16 +206,13 @@ function ApiContext:write(patch)
 		added = added,
 	}
 
-	body = Http.msgpackEncode(body)
+	body = Http.jsonEncode(body)
 
-	return Http.post(url, body)
+	return Http.post(url, body):andThen(rejectFailedRequests):andThen(Http.Response.json):andThen(function(responseBody)
-		:andThen(rejectFailedRequests)
+		Log.info("Write response: {:?}", responseBody)
-		:andThen(Http.Response.msgpack)
-		:andThen(function(responseBody)
-			Log.info("Write response: {:?}", responseBody)
 
-			return responseBody
+		return responseBody
-		end)
+	end)
 end
 
 function ApiContext:connectWebSocket(packetHandlers)
@@ -237,7 +234,7 @@ function ApiContext:connectWebSocket(packetHandlers)
 		local closed, errored, received
 
 		received = self.__wsClient.MessageReceived:Connect(function(msg)
-			local data = Http.msgpackDecode(msg)
+			local data = Http.jsonDecode(msg)
 			if data.sessionId ~= self.__sessionId then
 				Log.warn("Received message with wrong session ID; ignoring")
 				return
@@ -283,7 +280,7 @@ end
 function ApiContext:open(id)
 	local url = ("%s/api/open/%s"):format(self.__baseUrl, id)
 
-	return Http.post(url, ""):andThen(rejectFailedRequests):andThen(Http.Response.msgpack):andThen(function(body)
+	return Http.post(url, ""):andThen(rejectFailedRequests):andThen(Http.Response.json):andThen(function(body)
 		if body.sessionId ~= self.__sessionId then
 			return Promise.reject("Server changed ID")
 		end
@@ -293,39 +290,31 @@ function ApiContext:open(id)
 end
 
 function ApiContext:serialize(ids: { string })
-	local url = ("%s/api/serialize"):format(self.__baseUrl)
+	local url = ("%s/api/serialize/%s"):format(self.__baseUrl, table.concat(ids, ","))
-	local request_body = Http.msgpackEncode({ sessionId = self.__sessionId, ids = ids })
 
-	return Http.post(url, request_body)
+	return Http.get(url):andThen(rejectFailedRequests):andThen(Http.Response.json):andThen(function(body)
-		:andThen(rejectFailedRequests)
+		if body.sessionId ~= self.__sessionId then
-		:andThen(Http.Response.msgpack)
+			return Promise.reject("Server changed ID")
-		:andThen(function(response_body)
+		end
-			if response_body.sessionId ~= self.__sessionId then
-				return Promise.reject("Server changed ID")
-			end
 
-			assert(validateApiSerialize(response_body))
+		assert(validateApiSerialize(body))
 
-			return response_body
+		return body
-		end)
+	end)
 end
 
 function ApiContext:refPatch(ids: { string })
-	local url = ("%s/api/ref-patch"):format(self.__baseUrl)
+	local url = ("%s/api/ref-patch/%s"):format(self.__baseUrl, table.concat(ids, ","))
-	local request_body = Http.msgpackEncode({ sessionId = self.__sessionId, ids = ids })
 
-	return Http.post(url, request_body)
+	return Http.get(url):andThen(rejectFailedRequests):andThen(Http.Response.json):andThen(function(body)
-		:andThen(rejectFailedRequests)
+		if body.sessionId ~= self.__sessionId then
-		:andThen(Http.Response.msgpack)
+			return Promise.reject("Server changed ID")
-		:andThen(function(response_body)
+		end
-			if response_body.sessionId ~= self.__sessionId then
-				return Promise.reject("Server changed ID")
-			end
 
-			assert(validateApiRefPatch(response_body))
+		assert(validateApiRefPatch(body))
 
-			return response_body
+		return body
-		end)
+	end)
 end
 
 return ApiContext

plugin/src/App/Components/Notifications/FullscreenNotification.lua

@@ -19,15 +19,9 @@ local FullscreenNotification = Roact.Component:extend("FullscreeFullscreenNotifi
 function FullscreenNotification:init()
 	self.transparency, self.setTransparency = Roact.createBinding(0)
 	self.lifetime = self.props.timeout
-	self.dismissed = false
 end
 
 function FullscreenNotification:dismiss()
-	if self.dismissed then
-		return
-	end
-	self.dismissed = true
-
 	if self.props.onClose then
 		self.props.onClose()
 	end
@@ -65,7 +59,7 @@ function FullscreenNotification:didMount()
 end
 
 function FullscreenNotification:willUnmount()
-	if self.timeout and coroutine.status(self.timeout) == "suspended" then
+	if self.timeout and coroutine.status(self.timeout) ~= "dead" then
 		task.cancel(self.timeout)
 	end
 end

plugin/src/App/Components/Notifications/Notification.lua

@@ -25,7 +25,6 @@ function Notification:init()
 	self.binding = bindingUtil.fromMotor(self.motor)
 
 	self.lifetime = self.props.timeout
-	self.dismissed = false
 
 	self.motor:onStep(function(value)
 		if value <= 0 and self.props.onClose then
@@ -35,11 +34,6 @@ function Notification:init()
 end
 
 function Notification:dismiss()
-	if self.dismissed then
-		return
-	end
-	self.dismissed = true
-
 	self.motor:setGoal(Flipper.Spring.new(0, {
 		frequency = 5,
 		dampingRatio = 1,
@@ -81,7 +75,7 @@ function Notification:didMount()
 end
 
 function Notification:willUnmount()
-	if self.timeout and coroutine.status(self.timeout) == "suspended" then
+	if self.timeout and coroutine.status(self.timeout) ~= "dead" then
 		task.cancel(self.timeout)
 	end
 end

plugin/src/App/init.lua

@@ -301,19 +301,6 @@ function App:setPriorSyncInfo(host: string, port: string, projectName: string)
 	Settings:set("priorEndpoints", priorSyncInfos)
 end
 
-function App:forgetPriorSyncInfo()
-	local priorSyncInfos = Settings:get("priorEndpoints")
-	if not priorSyncInfos then
-		priorSyncInfos = {}
-	end
-
-	local id = tostring(game.PlaceId)
-	priorSyncInfos[id] = nil
-	Log.trace("Erased last used endpoint for {}", game.PlaceId)
-
-	Settings:set("priorEndpoints", priorSyncInfos)
-end
-
 function App:getHostAndPort()
 	local host = self.host:getValue()
 	local port = self.port:getValue()
@@ -448,8 +435,7 @@ function App:checkSyncReminder()
 	self:findActiveServer()
 		:andThen(function(serverInfo, host, port)
 			self:sendSyncReminder(
-				`Project '{serverInfo.projectName}' is serving at {host}:{port}.\nWould you like to connect?`,
+				`Project '{serverInfo.projectName}' is serving at {host}:{port}.\nWould you like to connect?`
-				{ "Connect", "Dismiss" }
 			)
 		end)
 		:catch(function()
@@ -460,8 +446,7 @@ function App:checkSyncReminder()
 
 				local timeSinceSync = timeUtil.elapsedToText(os.time() - priorSyncInfo.timestamp)
 				self:sendSyncReminder(
-					`You synced project '{priorSyncInfo.projectName}' to this place {timeSinceSync}.\nDid you mean to run 'rojo serve' and then connect?`,
+					`You synced project '{priorSyncInfo.projectName}' to this place {timeSinceSync}.\nDid you mean to run 'rojo serve' and then connect?`
-					{ "Connect", "Forget", "Dismiss" }
 				)
 			end
 		end)
@@ -501,16 +486,12 @@ function App:stopSyncReminderPolling()
 	end
 end
 
-function App:sendSyncReminder(message: string, shownActions: { string })
+function App:sendSyncReminder(message: string)
 	local syncReminderMode = Settings:get("syncReminderMode")
 	if syncReminderMode == "None" then
 		return
 	end
 
-	local connectIndex = table.find(shownActions, "Connect")
-	local forgetIndex = table.find(shownActions, "Forget")
-	local dismissIndex = table.find(shownActions, "Dismiss")
-
 	self.dismissSyncReminder = self:addNotification({
 		text = message,
 		timeout = 120,
@@ -519,39 +500,24 @@ function App:sendSyncReminder(message: string, shownActions: { string })
 			self.dismissSyncReminder = nil
 		end,
 		actions = {
-			Connect = if connectIndex
+			Connect = {
-				then {
+				text = "Connect",
-					text = "Connect",
+				style = "Solid",
-					style = "Solid",
+				layoutOrder = 1,
-					layoutOrder = connectIndex,
+				onClick = function()
-					onClick = function()
+					self:startSession()
-						self:startSession()
+				end,
-					end,
+			},
-				}
+			Dismiss = {
-				else nil,
+				text = "Dismiss",
-			Forget = if forgetIndex
+				style = "Bordered",
-				then {
+				layoutOrder = 2,
-					text = "Forget",
+				onClick = function()
-					style = "Bordered",
+					-- If the user dismisses the reminder,
-					layoutOrder = forgetIndex,
+					-- then we don't need to remind them again
-					onClick = function()
+					self:stopSyncReminderPolling()
-						-- The user doesn't want to be reminded again about this sync
+				end,
-						self:forgetPriorSyncInfo()
+			},
-					end,
-				}
-				else nil,
-			Dismiss = if dismissIndex
-				then {
-					text = "Dismiss",
-					style = "Bordered",
-					layoutOrder = dismissIndex,
-					onClick = function()
-						-- If the user dismisses the reminder,
-						-- then we don't need to remind them again
-						self:stopSyncReminderPolling()
-					end,
-				}
-				else nil,
 		},
 	})
 end

plugin/src/Reconciler/diff.lua

@@ -54,10 +54,6 @@ local function trueEquals(a, b): boolean
 		end
 		return true
 
-	-- For NaN, check if both values are not equal to themselves
-	elseif a ~= a and b ~= b then
-		return true
-
 	-- For numbers, compare with epsilon of 0.0001 to avoid floating point inequality
 	elseif typeA == "number" and typeB == "number" then
 		return fuzzyEq(a, b, 0.0001)

rokit.toml

@@ -3,4 +3,3 @@ rojo = "rojo-rbx/rojo@7.5.1"
 selene = "Kampfkarren/selene@0.29.0"
 stylua = "JohnnyMorganz/stylua@2.1.0"
 run-in-roblox = "rojo-rbx/run-in-roblox@0.3.0"
-lune = "lune-org/lune@0.10.4"

src/change_processor.rs

@@ -1,14 +1,15 @@
-use crossbeam_channel::{select, Receiver, RecvError, Sender};
-use jod_thread::JoinHandle;
-use memofs::{IoResultExt, Vfs, VfsEvent};
-use rbx_dom_weak::types::{Ref, Variant};
-use std::path::PathBuf;
 use std::{
     fs,
     sync::{Arc, Mutex},
 };
 
+use crossbeam_channel::{select, Receiver, RecvError, Sender};
+use jod_thread::JoinHandle;
+use memofs::{IoResultExt, Vfs, VfsEvent};
+use rbx_dom_weak::types::{Ref, Variant};
+
 use crate::{
+    git::SharedGitFilter,
     message_queue::MessageQueue,
     snapshot::{
         apply_patch_set, compute_patch_set, AppliedPatchSet, InstigatingSource, PatchSet, RojoTree,
@@ -46,11 +47,15 @@ pub struct ChangeProcessor {
 impl ChangeProcessor {
     /// Spin up the ChangeProcessor, connecting it to the given tree, VFS, and
     /// outbound message queue.
+    ///
+    /// If `git_filter` is provided, it will be refreshed on every VFS event
+    /// to ensure newly changed files are acknowledged.
     pub fn start(
         tree: Arc<Mutex<RojoTree>>,
         vfs: Arc<Vfs>,
         message_queue: Arc<MessageQueue<AppliedPatchSet>>,
         tree_mutation_receiver: Receiver<PatchSet>,
+        git_filter: Option<SharedGitFilter>,
     ) -> Self {
         let (shutdown_sender, shutdown_receiver) = crossbeam_channel::bounded(1);
         let vfs_receiver = vfs.event_receiver();
@@ -58,6 +63,7 @@ impl ChangeProcessor {
             tree,
             vfs,
             message_queue,
+            git_filter,
         };
 
         let job_thread = jod_thread::Builder::new()
@@ -111,55 +117,24 @@ struct JobThreadContext {
     /// Whenever changes are applied to the DOM, we should push those changes
     /// into this message queue to inform any connected clients.
     message_queue: Arc<MessageQueue<AppliedPatchSet>>,
+
+    /// Optional Git filter for --git-since mode. When set, will be refreshed
+    /// on every VFS event to ensure newly changed files are acknowledged.
+    git_filter: Option<SharedGitFilter>,
 }
 
 impl JobThreadContext {
-    /// Computes and applies patches to the DOM for a given file path.
-    ///
-    /// This function finds the nearest ancestor to the given path that has associated instances
-    /// in the tree.
-    /// It then computes and applies changes for each affected instance ID and
-    /// returns a vector of applied patch sets.
-    fn apply_patches(&self, path: PathBuf) -> Vec<AppliedPatchSet> {
-        let mut tree = self.tree.lock().unwrap();
-        let mut applied_patches = Vec::new();
-
-        // Find the nearest ancestor to this path that has
-        // associated instances in the tree. This helps make sure
-        // that we handle additions correctly, especially if we
-        // receive events for descendants of a large tree being
-        // created all at once.
-        let mut current_path = path.as_path();
-        let affected_ids = loop {
-            let ids = tree.get_ids_at_path(current_path);
-
-            log::trace!("Path {} affects IDs {:?}", current_path.display(), ids);
-
-            if !ids.is_empty() {
-                break ids.to_vec();
-            }
-
-            log::trace!("Trying parent path...");
-            match current_path.parent() {
-                Some(parent) => current_path = parent,
-                None => break Vec::new(),
-            }
-        };
-
-        for id in affected_ids {
-            if let Some(patch) = compute_and_apply_changes(&mut tree, &self.vfs, id) {
-                if !patch.is_empty() {
-                    applied_patches.push(patch);
-                }
-            }
-        }
-
-        applied_patches
-    }
-
     fn handle_vfs_event(&self, event: VfsEvent) {
         log::trace!("Vfs event: {:?}", event);
 
+        // If we have a git filter, refresh it to pick up any new changes.
+        // This ensures that files modified during the session will be acknowledged.
+        if let Some(ref git_filter) = self.git_filter {
+            if let Err(err) = git_filter.refresh() {
+                log::warn!("Failed to refresh git filter: {:?}", err);
+            }
+        }
+
         // Update the VFS immediately with the event.
         self.vfs
             .commit_event(&event)
@@ -168,16 +143,54 @@ impl JobThreadContext {
         // For a given VFS event, we might have many changes to different parts
         // of the tree. Calculate and apply all of these changes.
         let applied_patches = match event {
-            VfsEvent::Create(path) | VfsEvent::Write(path) => {
+            VfsEvent::Create(path) | VfsEvent::Remove(path) | VfsEvent::Write(path) => {
-                self.apply_patches(self.vfs.canonicalize(&path).unwrap())
+                let mut tree = self.tree.lock().unwrap();
-            }
+                let mut applied_patches = Vec::new();
-            VfsEvent::Remove(path) => {
+
-                // MemoFS does not track parent removals yet, so we can canonicalize
+                // Find the nearest ancestor to this path that has
-                // the parent path safely and then append the removed path's file name.
+                // associated instances in the tree. This helps make sure
-                let parent = path.parent().unwrap();
+                // that we handle additions correctly, especially if we
-                let file_name = path.file_name().unwrap();
+                // receive events for descendants of a large tree being
-                let parent_normalized = self.vfs.canonicalize(parent).unwrap();
+                // created all at once.
-                self.apply_patches(parent_normalized.join(file_name))
+                let mut current_path = path.as_path();
+                let affected_ids = loop {
+                    let ids = tree.get_ids_at_path(current_path);
+
+                    log::trace!("Path {} affects IDs {:?}", current_path.display(), ids);
+
+                    if !ids.is_empty() {
+                        break ids.to_vec();
+                    }
+
+                    log::trace!("Trying parent path...");
+                    match current_path.parent() {
+                        Some(parent) => current_path = parent,
+                        None => break Vec::new(),
+                    }
+                };
+
+                if affected_ids.is_empty() {
+                    log::debug!(
+                        "No instances found for path {} or any of its ancestors",
+                        path.display()
+                    );
+                } else {
+                    log::debug!(
+                        "Found {} affected instances for path {}",
+                        affected_ids.len(),
+                        path.display()
+                    );
+                }
+
+                for id in affected_ids {
+                    if let Some(patch) = compute_and_apply_changes(&mut tree, &self.vfs, id) {
+                        if !patch.is_empty() {
+                            applied_patches.push(patch);
+                        }
+                    }
+                }
+
+                applied_patches
             }
             _ => {
                 log::warn!("Unhandled VFS event: {:?}", event);

src/cli/build.rs

@@ -81,7 +81,7 @@ impl BuildCommand {
         let vfs = Vfs::new_default();
         vfs.set_watch_enabled(self.watch);
 
-        let session = ServeSession::new(vfs, project_path)?;
+        let session = ServeSession::new(vfs, project_path, None)?;
         let mut cursor = session.message_queue().cursor();
 
         write_model(&session, &output_path, output_kind)?;

src/cli/plugin.rs

@@ -54,7 +54,7 @@ fn initialize_plugin() -> anyhow::Result<ServeSession> {
     in_memory_fs.load_snapshot("/plugin", plugin_snapshot)?;
 
     let vfs = Vfs::new(in_memory_fs);
-    Ok(ServeSession::new(vfs, "/plugin")?)
+    Ok(ServeSession::new(vfs, "/plugin", None)?)
 }
 
 fn install_plugin() -> anyhow::Result<()> {
@@ -98,5 +98,5 @@ fn uninstall_plugin() -> anyhow::Result<()> {
 
 #[test]
 fn plugin_initialize() {
-    let _ = initialize_plugin().unwrap();
+    assert!(initialize_plugin().is_ok())
 }

src/cli/serve.rs

@@ -9,7 +9,7 @@ use clap::Parser;
 use memofs::Vfs;
 use termcolor::{BufferWriter, Color, ColorChoice, ColorSpec, WriteColor};
 
-use crate::{serve_session::ServeSession, web::LiveServer};
+use crate::{git::GitFilter, serve_session::ServeSession, web::LiveServer};
 
 use super::{resolve_path, GlobalOptions};
 
@@ -31,6 +31,19 @@ pub struct ServeCommand {
     /// it has none.
     #[clap(long)]
     pub port: Option<u16>,
+
+    /// Only sync files that have changed since the given Git reference.
+    ///
+    /// When this option is set, Rojo will only include files that have been
+    /// modified, added, or are untracked since the specified Git reference
+    /// (e.g., "HEAD", "main", a commit hash). This is useful for working with
+    /// large projects where you only want to sync your local changes.
+    ///
+    /// Scripts that have not changed will still be acknowledged if modified
+    /// during the session, and all synced instances will have
+    /// ignoreUnknownInstances set to true to preserve descendants in Studio.
+    #[clap(long, value_name = "REF")]
+    pub git_since: Option<String>,
 }
 
 impl ServeCommand {
@@ -39,7 +52,19 @@ impl ServeCommand {
 
         let vfs = Vfs::new_default();
 
-        let session = Arc::new(ServeSession::new(vfs, project_path)?);
+        // Set up Git filter if --git-since was specified
+        let git_filter = if let Some(ref base_ref) = self.git_since {
+            let repo_root = GitFilter::find_repo_root(&project_path)?;
+            log::info!(
+                "Git filter enabled: only syncing files changed since '{}'",
+                base_ref
+            );
+            Some(Arc::new(GitFilter::new(repo_root, base_ref.clone(), &project_path)?))
+        } else {
+            None
+        };
+
+        let session = Arc::new(ServeSession::new(vfs, project_path, git_filter)?);
 
         let ip = self
             .address
@@ -53,17 +78,25 @@ impl ServeCommand {
 
         let server = LiveServer::new(session);
 
-        let _ = show_start_message(ip, port, global.color.into());
+        let _ = show_start_message(ip, port, self.git_since.as_deref(), global.color.into());
         server.start((ip, port).into());
 
         Ok(())
     }
 }
 
-fn show_start_message(bind_address: IpAddr, port: u16, color: ColorChoice) -> io::Result<()> {
+fn show_start_message(
+    bind_address: IpAddr,
+    port: u16,
+    git_since: Option<&str>,
+    color: ColorChoice,
+) -> io::Result<()> {
     let mut green = ColorSpec::new();
     green.set_fg(Some(Color::Green)).set_bold(true);
 
+    let mut yellow = ColorSpec::new();
+    yellow.set_fg(Some(Color::Yellow)).set_bold(true);
+
     let writer = BufferWriter::stdout(color);
     let mut buffer = writer.buffer();
 
@@ -84,6 +117,13 @@ fn show_start_message(bind_address: IpAddr, port: u16, color: ColorChoice) -> io
     buffer.set_color(&green)?;
     writeln!(&mut buffer, "{}", port)?;
 
+    if let Some(base_ref) = git_since {
+        buffer.set_color(&ColorSpec::new())?;
+        write!(&mut buffer, "  Mode:    ")?;
+        buffer.set_color(&yellow)?;
+        writeln!(&mut buffer, "git-since ({})", base_ref)?;
+    }
+
     writeln!(&mut buffer)?;
 
     buffer.set_color(&ColorSpec::new())?;

src/cli/snapshots/librojo__cli__sourcemap__test__maps_absolute_paths.snap

@@ -1,35 +0,0 @@
----
-source: src/cli/sourcemap.rs
-expression: sourcemap_contents
----
-{
-  "name": "default",
-  "className": "DataModel",
-  "filePaths": "[...1 path omitted...]",
-  "children": [
-    {
-      "name": "ReplicatedStorage",
-      "className": "ReplicatedStorage",
-      "children": [
-        {
-          "name": "Project",
-          "className": "ModuleScript",
-          "filePaths": "[...1 path omitted...]",
-          "children": [
-            {
-              "name": "Module",
-              "className": "Folder",
-              "children": [
-                {
-                  "name": "module",
-                  "className": "ModuleScript",
-                  "filePaths": "[...1 path omitted...]"
-                }
-              ]
-            }
-          ]
-        }
-      ]
-    }
-  ]
-}

src/cli/snapshots/librojo__cli__sourcemap__test__maps_relative_paths.snap

@@ -1,41 +0,0 @@
----
-source: src/cli/sourcemap.rs
-expression: sourcemap_contents
----
-{
-  "name": "default",
-  "className": "DataModel",
-  "filePaths": [
-    "default.project.json"
-  ],
-  "children": [
-    {
-      "name": "ReplicatedStorage",
-      "className": "ReplicatedStorage",
-      "children": [
-        {
-          "name": "Project",
-          "className": "ModuleScript",
-          "filePaths": [
-            "src/init.luau"
-          ],
-          "children": [
-            {
-              "name": "Module",
-              "className": "Folder",
-              "children": [
-                {
-                  "name": "module",
-                  "className": "ModuleScript",
-                  "filePaths": [
-                    "../module/module.luau"
-                  ]
-                }
-              ]
-            }
-          ]
-        }
-      ]
-    }
-  ]
-}

src/cli/sourcemap.rs

@@ -10,7 +10,7 @@ use fs_err::File;
 use memofs::Vfs;
 use rayon::prelude::*;
 use rbx_dom_weak::{types::Ref, Ustr};
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 use tokio::runtime::Runtime;
 
 use crate::{
@@ -24,20 +24,19 @@ const PATH_STRIP_FAILED_ERR: &str = "Failed to create relative paths for project
 const ABSOLUTE_PATH_FAILED_ERR: &str = "Failed to turn relative path into absolute path!";
 
 /// Representation of a node in the generated sourcemap tree.
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize)]
 #[serde(rename_all = "camelCase")]
 struct SourcemapNode<'a> {
     name: &'a str,
     class_name: Ustr,
 
     #[serde(
-        default,
         skip_serializing_if = "Vec::is_empty",
         serialize_with = "crate::path_serializer::serialize_vec_absolute"
     )]
     file_paths: Vec<Cow<'a, Path>>,
 
-    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    #[serde(skip_serializing_if = "Vec::is_empty")]
     children: Vec<SourcemapNode<'a>>,
 }
 
@@ -71,14 +70,13 @@ pub struct SourcemapCommand {
 
 impl SourcemapCommand {
     pub fn run(self) -> anyhow::Result<()> {
-        let project_path = fs_err::canonicalize(resolve_path(&self.project))?;
+        let project_path = resolve_path(&self.project);
 
-        log::trace!("Constructing filesystem with StdBackend");
+        log::trace!("Constructing in-memory filesystem");
         let vfs = Vfs::new_default();
         vfs.set_watch_enabled(self.watch);
 
-        log::trace!("Setting up session for sourcemap generation");
+        let session = ServeSession::new(vfs, project_path, None)?;
-        let session = ServeSession::new(vfs, project_path)?;
         let mut cursor = session.message_queue().cursor();
 
         let filter = if self.include_non_scripts {
@@ -89,17 +87,14 @@ impl SourcemapCommand {
 
         // Pre-build a rayon threadpool with a low number of threads to avoid
         // dynamic creation overhead on systems with a high number of cpus.
-        log::trace!("Setting rayon global threadpool");
         rayon::ThreadPoolBuilder::new()
             .num_threads(num_cpus::get().min(6))
             .build_global()
-            .ok();
+            .unwrap();
 
-        log::trace!("Writing initial sourcemap");
         write_sourcemap(&session, self.output.as_deref(), filter, self.absolute)?;
 
         if self.watch {
-            log::trace!("Setting up runtime for watch mode");
             let rt = Runtime::new().unwrap();
 
             loop {
@@ -213,7 +208,7 @@ fn recurse_create_node<'a>(
     } else {
         for val in file_paths {
             output_file_paths.push(Cow::from(
-                pathdiff::diff_paths(val, project_dir).expect(PATH_STRIP_FAILED_ERR),
+                val.strip_prefix(project_dir).expect(PATH_STRIP_FAILED_ERR),
             ));
         }
     };
@@ -255,80 +250,3 @@ fn write_sourcemap(
 
     Ok(())
 }
-
-#[cfg(test)]
-mod test {
-    use crate::cli::sourcemap::SourcemapNode;
-    use crate::cli::SourcemapCommand;
-    use insta::internals::Content;
-    use std::path::Path;
-
-    #[test]
-    fn maps_relative_paths() {
-        let sourcemap_dir = tempfile::tempdir().unwrap();
-        let sourcemap_output = sourcemap_dir.path().join("sourcemap.json");
-        let project_path = fs_err::canonicalize(
-            Path::new(env!("CARGO_MANIFEST_DIR"))
-                .join("test-projects")
-                .join("relative_paths")
-                .join("project"),
-        )
-        .unwrap();
-        let sourcemap_command = SourcemapCommand {
-            project: project_path,
-            output: Some(sourcemap_output.clone()),
-            include_non_scripts: false,
-            watch: false,
-            absolute: false,
-        };
-        assert!(sourcemap_command.run().is_ok());
-
-        let raw_sourcemap_contents = fs_err::read_to_string(sourcemap_output.as_path()).unwrap();
-        let sourcemap_contents =
-            serde_json::from_str::<SourcemapNode>(&raw_sourcemap_contents).unwrap();
-        insta::assert_json_snapshot!(sourcemap_contents);
-    }
-
-    #[test]
-    fn maps_absolute_paths() {
-        let sourcemap_dir = tempfile::tempdir().unwrap();
-        let sourcemap_output = sourcemap_dir.path().join("sourcemap.json");
-        let project_path = fs_err::canonicalize(
-            Path::new(env!("CARGO_MANIFEST_DIR"))
-                .join("test-projects")
-                .join("relative_paths")
-                .join("project"),
-        )
-        .unwrap();
-        let sourcemap_command = SourcemapCommand {
-            project: project_path,
-            output: Some(sourcemap_output.clone()),
-            include_non_scripts: false,
-            watch: false,
-            absolute: true,
-        };
-        assert!(sourcemap_command.run().is_ok());
-
-        let raw_sourcemap_contents = fs_err::read_to_string(sourcemap_output.as_path()).unwrap();
-        let sourcemap_contents =
-            serde_json::from_str::<SourcemapNode>(&raw_sourcemap_contents).unwrap();
-        insta::assert_json_snapshot!(sourcemap_contents, {
-            ".**.filePaths" => insta::dynamic_redaction(|mut value, _path| {
-                let mut paths_count = 0;
-
-                match value {
-                    Content::Seq(ref mut vec) => {
-                        for path in vec.iter().map(|i| i.as_str().unwrap()) {
-                            assert_eq!(fs_err::canonicalize(path).is_ok(), true, "path was not valid");
-                            assert_eq!(Path::new(path).is_absolute(), true, "path was not absolute");
-
-                            paths_count += 1;
-                        }
-                    }
-                    _ => panic!("Expected filePaths to be a sequence"),
-                }
-                format!("[...{} path{} omitted...]", paths_count, if paths_count != 1 { "s" } else { "" } )
-            })
-        });
-    }
-}

src/cli/syncback.rs

@@ -73,7 +73,7 @@ impl SyncbackCommand {
         vfs.set_watch_enabled(false);
 
         let project_start_timer = Instant::now();
-        let session_old = ServeSession::new(vfs, path_old.clone())?;
+        let session_old = ServeSession::new(vfs, path_old.clone(), None)?;
         log::debug!(
             "Finished opening project in {:0.02}s",
             project_start_timer.elapsed().as_secs_f32()

src/cli/upload.rs

@@ -42,7 +42,7 @@ impl UploadCommand {
 
         let vfs = Vfs::new_default();
 
-        let session = ServeSession::new(vfs, project_path)?;
+        let session = ServeSession::new(vfs, project_path, None)?;
 
         let tree = session.tree();
         let inner_tree = tree.inner();

src/git.rs

@@ -0,0 +1,380 @@
+//! Git integration for filtering files based on changes since a reference.
+
+use std::{
+    collections::HashSet,
+    path::{Path, PathBuf},
+    process::Command,
+    sync::{Arc, RwLock},
+};
+
+use anyhow::{bail, Context};
+
+/// A filter that tracks which files have been changed since a Git reference.
+///
+/// When active, only files that have been modified, added, or deleted according
+/// to Git will be "acknowledged" and synced to Studio. This allows users to
+/// work with large projects where they only want to sync their local changes.
+///
+/// Once a file is acknowledged (either initially or during the session), it
+/// stays acknowledged for the entire session. This prevents files from being
+/// deleted in Studio if their content is reverted to match the git reference.
+#[derive(Debug)]
+pub struct GitFilter {
+    /// The Git repository root directory.
+    repo_root: PathBuf,
+
+    /// The Git reference to compare against (e.g., "HEAD", "main", a commit hash).
+    base_ref: String,
+
+    /// Cache of paths that are currently different from the base ref according to git.
+    /// This is refreshed on every VFS event.
+    git_changed_paths: RwLock<HashSet<PathBuf>>,
+
+    /// Paths that have been acknowledged at any point during this session.
+    /// Once a path is added here, it stays acknowledged forever (for this session).
+    /// This prevents files from being deleted if their content is reverted.
+    session_acknowledged_paths: RwLock<HashSet<PathBuf>>,
+}
+
+impl GitFilter {
+    /// Creates a new GitFilter for the given repository root and base reference.
+    ///
+    /// The `repo_root` should be the root of the Git repository (where .git is located).
+    /// The `base_ref` is the Git reference to compare against (e.g., "HEAD", "main").
+    /// The `project_path` is the path to the project being served - it will always be
+    /// acknowledged regardless of git status to ensure the project structure exists.
+    pub fn new(repo_root: PathBuf, base_ref: String, project_path: &Path) -> anyhow::Result<Self> {
+        let filter = Self {
+            repo_root,
+            base_ref,
+            git_changed_paths: RwLock::new(HashSet::new()),
+            session_acknowledged_paths: RwLock::new(HashSet::new()),
+        };
+
+        // Always acknowledge the project path and its directory so the project
+        // structure exists even when there are no git changes
+        filter.acknowledge_project_path(project_path);
+
+        // Initial refresh to populate the cache with git changes
+        filter.refresh()?;
+
+        Ok(filter)
+    }
+
+    /// Acknowledges the project path and its containing directory.
+    /// This ensures the project structure always exists regardless of git status.
+    fn acknowledge_project_path(&self, project_path: &Path) {
+        let mut session = self.session_acknowledged_paths.write().unwrap();
+
+        // Acknowledge the project path itself (might be a directory or .project.json file)
+        let canonical = project_path.canonicalize().unwrap_or_else(|_| project_path.to_path_buf());
+        session.insert(canonical.clone());
+
+        // Acknowledge all ancestor directories
+        let mut current = canonical.parent();
+        while let Some(parent) = current {
+            session.insert(parent.to_path_buf());
+            current = parent.parent();
+        }
+
+        // If it's a directory, also acknowledge default.project.json inside it
+        if project_path.is_dir() {
+            for name in &["default.project.json", "default.project.jsonc"] {
+                let project_file = project_path.join(name);
+                if let Ok(canonical_file) = project_file.canonicalize() {
+                    session.insert(canonical_file);
+                } else {
+                    session.insert(project_file);
+                }
+            }
+        }
+
+        // If it's a .project.json file, also acknowledge its parent directory
+        if let Some(parent) = project_path.parent() {
+            let parent_canonical = parent.canonicalize().unwrap_or_else(|_| parent.to_path_buf());
+            session.insert(parent_canonical);
+        }
+
+        log::debug!(
+            "GitFilter: acknowledged project path {} ({} paths total)",
+            project_path.display(),
+            session.len()
+        );
+    }
+
+    /// Finds the Git repository root for the given path.
+    pub fn find_repo_root(path: &Path) -> anyhow::Result<PathBuf> {
+        let output = Command::new("git")
+            .args(["rev-parse", "--show-toplevel"])
+            .current_dir(path)
+            .output()
+            .context("Failed to execute git rev-parse")?;
+
+        if !output.status.success() {
+            let stderr = String::from_utf8_lossy(&output.stderr);
+            bail!("Failed to find Git repository root: {}", stderr.trim());
+        }
+
+        let root = String::from_utf8_lossy(&output.stdout)
+            .trim()
+            .to_string();
+
+        Ok(PathBuf::from(root))
+    }
+
+    /// Refreshes the cache of acknowledged paths by querying Git.
+    ///
+    /// This should be called when files change to ensure newly modified files
+    /// are properly acknowledged. Once a path is acknowledged, it stays
+    /// acknowledged for the entire session (even if the file is reverted).
+    pub fn refresh(&self) -> anyhow::Result<()> {
+        let mut git_changed = HashSet::new();
+
+        // Get files changed since the base ref (modified, added, deleted)
+        let diff_output = Command::new("git")
+            .args(["diff", "--name-only", &self.base_ref])
+            .current_dir(&self.repo_root)
+            .output()
+            .context("Failed to execute git diff")?;
+
+        if !diff_output.status.success() {
+            let stderr = String::from_utf8_lossy(&diff_output.stderr);
+            bail!("git diff failed: {}", stderr.trim());
+        }
+
+        let diff_files = String::from_utf8_lossy(&diff_output.stdout);
+        let diff_count = diff_files.lines().filter(|l| !l.is_empty()).count();
+        if diff_count > 0 {
+            log::debug!("git diff found {} changed files", diff_count);
+        }
+        for line in diff_files.lines() {
+            if !line.is_empty() {
+                let path = self.repo_root.join(line);
+                log::trace!("git diff: acknowledging {}", path.display());
+                self.acknowledge_path(&path, &mut git_changed);
+            }
+        }
+
+        // Get untracked files (new files not yet committed)
+        let untracked_output = Command::new("git")
+            .args(["ls-files", "--others", "--exclude-standard"])
+            .current_dir(&self.repo_root)
+            .output()
+            .context("Failed to execute git ls-files")?;
+
+        if !untracked_output.status.success() {
+            let stderr = String::from_utf8_lossy(&untracked_output.stderr);
+            bail!("git ls-files failed: {}", stderr.trim());
+        }
+
+        let untracked_files = String::from_utf8_lossy(&untracked_output.stdout);
+        for line in untracked_files.lines() {
+            if !line.is_empty() {
+                let path = self.repo_root.join(line);
+                self.acknowledge_path(&path, &mut git_changed);
+            }
+        }
+
+        // Get staged files (files added to index but not yet committed)
+        let staged_output = Command::new("git")
+            .args(["diff", "--name-only", "--cached", &self.base_ref])
+            .current_dir(&self.repo_root)
+            .output()
+            .context("Failed to execute git diff --cached")?;
+
+        if staged_output.status.success() {
+            let staged_files = String::from_utf8_lossy(&staged_output.stdout);
+            for line in staged_files.lines() {
+                if !line.is_empty() {
+                    let path = self.repo_root.join(line);
+                    self.acknowledge_path(&path, &mut git_changed);
+                }
+            }
+        }
+
+        // Update the git changed paths cache
+        {
+            let mut cache = self.git_changed_paths.write().unwrap();
+            *cache = git_changed.clone();
+        }
+
+        // Merge newly changed paths into session acknowledged paths
+        // Once acknowledged, a path stays acknowledged for the entire session
+        {
+            let mut session = self.session_acknowledged_paths.write().unwrap();
+            for path in git_changed {
+                session.insert(path);
+            }
+            log::debug!(
+                "GitFilter refreshed: {} paths acknowledged in session",
+                session.len()
+            );
+        }
+
+        Ok(())
+    }
+
+    /// Acknowledges a path and all its ancestors, plus associated meta files.
+    fn acknowledge_path(&self, path: &Path, acknowledged: &mut HashSet<PathBuf>) {
+        // Canonicalize the path if possible, otherwise use as-is
+        let path = path.canonicalize().unwrap_or_else(|_| path.to_path_buf());
+
+        // Add the path itself
+        acknowledged.insert(path.clone());
+
+        // Add all ancestor directories
+        let mut current = path.parent();
+        while let Some(parent) = current {
+            acknowledged.insert(parent.to_path_buf());
+            current = parent.parent();
+        }
+
+        // Add associated meta files
+        self.acknowledge_meta_files(&path, acknowledged);
+    }
+
+    /// Acknowledges associated meta files for a given path.
+    fn acknowledge_meta_files(&self, path: &Path, acknowledged: &mut HashSet<PathBuf>) {
+        if let Some(file_name) = path.file_name().and_then(|n| n.to_str()) {
+            if let Some(parent) = path.parent() {
+                // For a file like "foo.lua", also acknowledge "foo.meta.json"
+                // Strip known extensions to get the base name
+                let base_name = strip_lua_extension(file_name);
+
+                let meta_path = parent.join(format!("{}.meta.json", base_name));
+                if let Ok(canonical) = meta_path.canonicalize() {
+                    acknowledged.insert(canonical);
+                } else {
+                    acknowledged.insert(meta_path);
+                }
+
+                // For init files, also acknowledge "init.meta.json" in the same directory
+                if file_name.starts_with("init.") {
+                    let init_meta = parent.join("init.meta.json");
+                    if let Ok(canonical) = init_meta.canonicalize() {
+                        acknowledged.insert(canonical);
+                    } else {
+                        acknowledged.insert(init_meta);
+                    }
+                }
+            }
+        }
+    }
+
+    /// Checks if a path is acknowledged (should be synced).
+    ///
+    /// Returns `true` if the path or any of its descendants have been changed
+    /// at any point during this session. Once a file is acknowledged, it stays
+    /// acknowledged even if its content is reverted to match the git reference.
+    pub fn is_acknowledged(&self, path: &Path) -> bool {
+        let session = self.session_acknowledged_paths.read().unwrap();
+
+        // Try to canonicalize the path
+        let canonical = path.canonicalize().unwrap_or_else(|_| path.to_path_buf());
+
+        // Check if this exact path is acknowledged
+        if session.contains(&canonical) {
+            log::trace!("Path {} is directly acknowledged", path.display());
+            return true;
+        }
+
+        // Also check without canonicalization in case of path differences
+        if session.contains(path) {
+            log::trace!("Path {} is acknowledged (non-canonical)", path.display());
+            return true;
+        }
+
+        // For directories, check if any descendant is acknowledged
+        // This is done by checking if any acknowledged path starts with this path
+        for acknowledged in session.iter() {
+            if acknowledged.starts_with(&canonical) {
+                log::trace!(
+                    "Path {} has acknowledged descendant {}",
+                    path.display(),
+                    acknowledged.display()
+                );
+                return true;
+            }
+            // Also check non-canonical
+            if acknowledged.starts_with(path) {
+                log::trace!(
+                    "Path {} has acknowledged descendant {} (non-canonical)",
+                    path.display(),
+                    acknowledged.display()
+                );
+                return true;
+            }
+        }
+
+        log::trace!(
+            "Path {} is NOT acknowledged (canonical: {})",
+            path.display(),
+            canonical.display()
+        );
+        false
+    }
+
+    /// Returns the base reference being compared against.
+    pub fn base_ref(&self) -> &str {
+        &self.base_ref
+    }
+
+    /// Returns the repository root path.
+    pub fn repo_root(&self) -> &Path {
+        &self.repo_root
+    }
+
+    /// Explicitly acknowledges a path and all its ancestors.
+    /// This is useful for ensuring certain paths are always synced regardless of git status.
+    pub fn force_acknowledge(&self, path: &Path) {
+        let mut acknowledged = HashSet::new();
+        self.acknowledge_path(path, &mut acknowledged);
+
+        let mut session = self.session_acknowledged_paths.write().unwrap();
+        for p in acknowledged {
+            session.insert(p);
+        }
+    }
+}
+
+/// Strips Lua-related extensions from a file name to get the base name.
+fn strip_lua_extension(file_name: &str) -> &str {
+    const EXTENSIONS: &[&str] = &[
+        ".server.luau",
+        ".server.lua",
+        ".client.luau",
+        ".client.lua",
+        ".luau",
+        ".lua",
+    ];
+
+    for ext in EXTENSIONS {
+        if let Some(base) = file_name.strip_suffix(ext) {
+            return base;
+        }
+    }
+
+    // If no Lua extension, try to strip the regular extension
+    file_name
+        .rsplit_once('.')
+        .map(|(base, _)| base)
+        .unwrap_or(file_name)
+}
+
+/// A wrapper around GitFilter that can be shared across threads.
+pub type SharedGitFilter = Arc<GitFilter>;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_strip_lua_extension() {
+        assert_eq!(strip_lua_extension("foo.server.lua"), "foo");
+        assert_eq!(strip_lua_extension("foo.client.luau"), "foo");
+        assert_eq!(strip_lua_extension("foo.lua"), "foo");
+        assert_eq!(strip_lua_extension("init.server.lua"), "init");
+        assert_eq!(strip_lua_extension("bar.txt"), "bar");
+        assert_eq!(strip_lua_extension("noextension"), "noextension");
+    }
+}

src/lib.rs

@@ -9,6 +9,7 @@ mod tree_view;
 
 mod auth_cookie;
 mod change_processor;
+mod git;
 mod glob;
 mod json;
 mod lua_ast;
@@ -28,6 +29,7 @@ mod web;
 
 // TODO: Work out what we should expose publicly
 
+pub use git::{GitFilter, SharedGitFilter};
 pub use project::*;
 pub use rojo_ref::*;
 pub use session_id::SessionId;

src/serve_session.rs

@@ -13,6 +13,7 @@ use thiserror::Error;
 
 use crate::{
     change_processor::ChangeProcessor,
+    git::SharedGitFilter,
     message_queue::MessageQueue,
     project::{Project, ProjectError},
     session_id::SessionId,
@@ -94,7 +95,14 @@ impl ServeSession {
     /// The project file is expected to be loaded out-of-band since it's
     /// currently loaded from the filesystem directly instead of through the
     /// in-memory filesystem layer.
-    pub fn new<P: AsRef<Path>>(vfs: Vfs, start_path: P) -> Result<Self, ServeSessionError> {
+    ///
+    /// If `git_filter` is provided, only files that have changed since the
+    /// specified Git reference will be synced.
+    pub fn new<P: AsRef<Path>>(
+        vfs: Vfs,
+        start_path: P,
+        git_filter: Option<SharedGitFilter>,
+    ) -> Result<Self, ServeSessionError> {
         let start_path = start_path.as_ref();
         let start_time = Instant::now();
 
@@ -102,12 +110,28 @@ impl ServeSession {
 
         let root_project = Project::load_initial_project(&vfs, start_path)?;
 
+        // If git filter is active, ensure the project file location is acknowledged
+        // This is necessary so the project structure exists even with no git changes
+        if let Some(ref filter) = git_filter {
+            filter.force_acknowledge(start_path);
+            filter.force_acknowledge(&root_project.file_location);
+            filter.force_acknowledge(root_project.folder_location());
+            log::debug!(
+                "Force acknowledged project at {}",
+                root_project.file_location.display()
+            );
+        }
+
         let mut tree = RojoTree::new(InstanceSnapshot::new());
 
         let root_id = tree.get_root_id();
 
-        let instance_context =
+        let instance_context = match &git_filter {
-            InstanceContext::with_emit_legacy_scripts(root_project.emit_legacy_scripts);
+            Some(filter) => {
+                InstanceContext::with_git_filter(root_project.emit_legacy_scripts, Arc::clone(filter))
+            }
+            None => InstanceContext::with_emit_legacy_scripts(root_project.emit_legacy_scripts),
+        };
 
         log::trace!("Generating snapshot of instances from VFS");
         let snapshot = snapshot_from_vfs(&instance_context, &vfs, start_path)?;
@@ -133,6 +157,7 @@ impl ServeSession {
             Arc::clone(&vfs),
             Arc::clone(&message_queue),
             tree_mutation_receiver,
+            git_filter,
         );
 
         Ok(Self {

src/snapshot/metadata.rs

@@ -8,6 +8,7 @@ use anyhow::Context;
 use serde::{Deserialize, Serialize};
 
 use crate::{
+    git::SharedGitFilter,
     glob::Glob,
     path_serializer,
     project::ProjectNode,
@@ -138,13 +139,27 @@ impl Default for InstanceMetadata {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct InstanceContext {
     #[serde(skip_serializing_if = "Vec::is_empty")]
     pub path_ignore_rules: Arc<Vec<PathIgnoreRule>>,
     pub emit_legacy_scripts: bool,
     #[serde(skip_serializing_if = "Vec::is_empty")]
     pub sync_rules: Vec<SyncRule>,
+    /// Optional Git filter for --git-since mode. When set, only files that have
+    /// changed since the specified Git reference will be synced.
+    #[serde(skip)]
+    pub git_filter: Option<SharedGitFilter>,
+}
+
+impl PartialEq for InstanceContext {
+    fn eq(&self, other: &Self) -> bool {
+        // Note: git_filter is intentionally excluded from comparison
+        // since it's runtime state, not configuration
+        self.path_ignore_rules == other.path_ignore_rules
+            && self.emit_legacy_scripts == other.emit_legacy_scripts
+            && self.sync_rules == other.sync_rules
+    }
 }
 
 impl InstanceContext {
@@ -153,6 +168,7 @@ impl InstanceContext {
             path_ignore_rules: Arc::new(Vec::new()),
             emit_legacy_scripts: emit_legacy_scripts_default().unwrap(),
             sync_rules: Vec::new(),
+            git_filter: None,
         }
     }
 
@@ -165,6 +181,36 @@ impl InstanceContext {
         }
     }
 
+    /// Creates a new InstanceContext with a Git filter for --git-since mode.
+    pub fn with_git_filter(
+        emit_legacy_scripts: Option<bool>,
+        git_filter: SharedGitFilter,
+    ) -> Self {
+        Self {
+            git_filter: Some(git_filter),
+            ..Self::with_emit_legacy_scripts(emit_legacy_scripts)
+        }
+    }
+
+    /// Sets the Git filter for this context.
+    pub fn set_git_filter(&mut self, git_filter: Option<SharedGitFilter>) {
+        self.git_filter = git_filter;
+    }
+
+    /// Returns true if the given path should be acknowledged (synced).
+    /// If no git filter is set, all paths are acknowledged.
+    pub fn is_path_acknowledged(&self, path: &Path) -> bool {
+        match &self.git_filter {
+            Some(filter) => filter.is_acknowledged(path),
+            None => true,
+        }
+    }
+
+    /// Returns true if a git filter is active.
+    pub fn has_git_filter(&self) -> bool {
+        self.git_filter.is_some()
+    }
+
     /// Extend the list of ignore rules in the context with the given new rules.
     pub fn add_path_ignore_rules<I>(&mut self, new_rules: I)
     where

src/snapshot/patch_compute.rs

@@ -8,7 +8,7 @@ use rbx_dom_weak::{
     ustr, HashMapExt as _, UstrMap, UstrSet,
 };
 
-use crate::{variant_eq::variant_eq, RojoRef, REF_POINTER_ATTRIBUTE_PREFIX};
+use crate::{RojoRef, REF_POINTER_ATTRIBUTE_PREFIX};
 
 use super::{
     patch::{PatchAdd, PatchSet, PatchUpdate},
@@ -127,7 +127,7 @@ fn compute_property_patches(
 
         match instance.properties().get(&name) {
             Some(instance_value) => {
-                if !variant_eq(&snapshot_value, instance_value) {
+                if &snapshot_value != instance_value {
                     changed_properties.insert(name, Some(snapshot_value));
                 }
             }

src/snapshot_middleware/csv.rs

@@ -42,7 +42,7 @@ pub fn snapshot_csv(
         .metadata(
             InstanceMetadata::new()
                 .instigating_source(path)
-                .relevant_paths(vec![vfs.canonicalize(path)?]),
+                .relevant_paths(vec![path.to_path_buf()]),
         );
 
     AdjacentMetadata::read_and_apply_all(vfs, path, name, &mut snapshot)?;

src/snapshot_middleware/dir.rs

@@ -62,19 +62,18 @@ pub fn snapshot_dir_no_meta(
         }
     }
 
-    let normalized_path = vfs.canonicalize(path)?;
     let relevant_paths = vec![
-        normalized_path.clone(),
+        path.to_path_buf(),
         // TODO: We shouldn't need to know about Lua existing in this
         // middleware. Should we figure out a way for that function to add
         // relevant paths to this middleware?
-        normalized_path.join("init.lua"),
+        path.join("init.lua"),
-        normalized_path.join("init.luau"),
+        path.join("init.luau"),
-        normalized_path.join("init.server.lua"),
+        path.join("init.server.lua"),
-        normalized_path.join("init.server.luau"),
+        path.join("init.server.luau"),
-        normalized_path.join("init.client.lua"),
+        path.join("init.client.lua"),
-        normalized_path.join("init.client.luau"),
+        path.join("init.client.luau"),
-        normalized_path.join("init.csv"),
+        path.join("init.csv"),
     ];
 
     let snapshot = InstanceSnapshot::new()

src/snapshot_middleware/json.rs

@@ -32,7 +32,7 @@ pub fn snapshot_json(
         .metadata(
             InstanceMetadata::new()
                 .instigating_source(path)
-                .relevant_paths(vec![vfs.canonicalize(path)?])
+                .relevant_paths(vec![path.to_path_buf()])
                 .context(context),
         );
 

src/snapshot_middleware/json_model.rs

@@ -59,7 +59,7 @@ pub fn snapshot_json_model(
     snapshot.metadata = snapshot
         .metadata
         .instigating_source(path)
-        .relevant_paths(vec![vfs.canonicalize(path)?])
+        .relevant_paths(vec![path.to_path_buf()])
         .context(context)
         .specified_id(id)
         .schema(schema);

src/snapshot_middleware/lua.rs

@@ -88,7 +88,7 @@ pub fn snapshot_lua(
         .metadata(
             InstanceMetadata::new()
                 .instigating_source(path)
-                .relevant_paths(vec![vfs.canonicalize(path)?])
+                .relevant_paths(vec![path.to_path_buf()])
                 .context(context),
         );
 

src/snapshot_middleware/mod.rs

@@ -61,6 +61,10 @@ pub use self::{
 /// This will inspect the path and find the appropriate middleware for it,
 /// taking user-written rules into account. Then, it will attempt to convert
 /// the path into an InstanceSnapshot using that middleware.
+///
+/// If a git filter is active in the context and the path is not acknowledged
+/// (i.e., the file hasn't changed since the base git reference), this function
+/// returns `Ok(None)` to skip syncing that file.
 #[profiling::function]
 pub fn snapshot_from_vfs(
     context: &InstanceContext,
@@ -72,6 +76,16 @@ pub fn snapshot_from_vfs(
         None => return Ok(None),
     };
 
+    // Check if this path is acknowledged by the git filter.
+    // If not, skip this path entirely.
+    if !context.is_path_acknowledged(path) {
+        log::trace!(
+            "Skipping path {} (not acknowledged by git filter)",
+            path.display()
+        );
+        return Ok(None);
+    }
+
     if meta.is_dir() {
         let (middleware, dir_name, init_path) = get_dir_middleware(vfs, path)?;
         // TODO: Support user defined init paths
@@ -213,6 +227,10 @@ pub enum Middleware {
 impl Middleware {
     /// Creates a snapshot for the given path from the Middleware with
     /// the provided name.
+    ///
+    /// When a git filter is active in the context, `ignore_unknown_instances`
+    /// will be set to `true` on all generated snapshots to preserve descendants
+    /// in Studio that are not tracked by Rojo.
     fn snapshot(
         &self,
         context: &InstanceContext,
@@ -262,6 +280,14 @@ impl Middleware {
         };
         if let Ok(Some(ref mut snapshot)) = output {
             snapshot.metadata.middleware = Some(*self);
+
+            // When git filter is active, force ignore_unknown_instances to true
+            // so that we don't delete children in Studio that aren't tracked.
+            if context.has_git_filter() {
+                snapshot.metadata.ignore_unknown_instances = true;
+                // Also apply this recursively to all children
+                set_ignore_unknown_instances_recursive(&mut snapshot.children);
+            }
         }
         output
     }
@@ -365,6 +391,16 @@ impl Middleware {
     }
 }
 
+/// Recursively sets `ignore_unknown_instances` to `true` on all children.
+/// This is used when git filter is active to ensure we don't delete
+/// children in Studio that aren't tracked by Rojo.
+fn set_ignore_unknown_instances_recursive(children: &mut [InstanceSnapshot]) {
+    for child in children {
+        child.metadata.ignore_unknown_instances = true;
+        set_ignore_unknown_instances_recursive(&mut child.children);
+    }
+}
+
 /// A helper for easily defining a SyncRule. Arguments are passed literally
 /// to this macro in the order `include`, `middleware`, `suffix`,
 /// and `exclude`. Both `suffix` and `exclude` are optional.

src/snapshot_middleware/project.rs

@@ -192,6 +192,17 @@ pub fn snapshot_project_node(
         }
 
         (_, None, _, Some(PathNode::Required(path))) => {
+            // If git filter is active and the path was filtered out, treat it
+            // as if the path was optional and skip this node.
+            if context.has_git_filter() {
+                log::trace!(
+                    "Skipping project node '{}' because its path was filtered by git filter: {}",
+                    instance_name,
+                    path.display()
+                );
+                return Ok(None);
+            }
+
             anyhow::bail!(
                 "Rojo project referred to a file using $path that could not be turned into a Roblox Instance by Rojo.\n\
                 Check that the file exists and is a file type known by Rojo.\n\
@@ -282,7 +293,12 @@ pub fn snapshot_project_node(
     // If the user didn't specify it AND $path was not specified (meaning
     // there's no existing value we'd be stepping on from a project file or meta
     // file), set it to true.
-    if let Some(ignore) = node.ignore_unknown_instances {
+    //
+    // When git filter is active, always set to true to preserve descendants
+    // in Studio that are not tracked by Rojo.
+    if context.has_git_filter() {
+        metadata.ignore_unknown_instances = true;
+    } else if let Some(ignore) = node.ignore_unknown_instances {
         metadata.ignore_unknown_instances = ignore;
     } else if node.path.is_none() {
         // TODO: Introduce a strict mode where $ignoreUnknownInstances is never

src/snapshot_middleware/rbxm.rs

@@ -28,7 +28,7 @@ pub fn snapshot_rbxm(
             .metadata(
                 InstanceMetadata::new()
                     .instigating_source(path)
-                    .relevant_paths(vec![vfs.canonicalize(path)?])
+                    .relevant_paths(vec![path.to_path_buf()])
                     .context(context),
             );
 

src/snapshot_middleware/rbxmx.rs

@@ -31,7 +31,7 @@ pub fn snapshot_rbxmx(
             .metadata(
                 InstanceMetadata::new()
                     .instigating_source(path)
-                    .relevant_paths(vec![vfs.canonicalize(path)?])
+                    .relevant_paths(vec![path.to_path_buf()])
                     .context(context),
             );
 

src/snapshot_middleware/toml.rs

@@ -31,7 +31,7 @@ pub fn snapshot_toml(
         .metadata(
             InstanceMetadata::new()
                 .instigating_source(path)
-                .relevant_paths(vec![vfs.canonicalize(path)?])
+                .relevant_paths(vec![path.to_path_buf()])
                 .context(context),
         );
 

src/snapshot_middleware/txt.rs

@@ -28,7 +28,7 @@ pub fn snapshot_txt(
         .metadata(
             InstanceMetadata::new()
                 .instigating_source(path)
-                .relevant_paths(vec![vfs.canonicalize(path)?])
+                .relevant_paths(vec![path.to_path_buf()])
                 .context(context),
         );
 

src/snapshot_middleware/yaml.rs

@@ -37,7 +37,7 @@ pub fn snapshot_yaml(
         .metadata(
             InstanceMetadata::new()
                 .instigating_source(path)
-                .relevant_paths(vec![vfs.canonicalize(path)?])
+                .relevant_paths(vec![path.to_path_buf()])
                 .context(context),
         );
 

src/syncback/mod.rs

@@ -301,7 +301,6 @@ pub fn get_best_middleware(snapshot: &SyncbackSnapshot) -> Middleware {
     static JSON_MODEL_CLASSES: OnceLock<HashSet<&str>> = OnceLock::new();
     let json_model_classes = JSON_MODEL_CLASSES.get_or_init(|| {
         [
-            "Actor",
             "Sound",
             "SoundGroup",
             "Sky",
@@ -319,11 +318,6 @@ pub fn get_best_middleware(snapshot: &SyncbackSnapshot) -> Middleware {
             "ChatInputBarConfiguration",
             "BubbleChatConfiguration",
             "ChannelTabsConfiguration",
-            "RemoteEvent",
-            "UnreliableRemoteEvent",
-            "RemoteFunction",
-            "BindableEvent",
-            "BindableFunction",
         ]
         .into()
     });

src/web/api.rs

@@ -1,7 +1,13 @@
 //! Defines Rojo's HTTP API, all under /api. These endpoints generally return
 //! JSON.
 
-use std::{collections::HashMap, fs, path::PathBuf, str::FromStr, sync::Arc};
+use std::{
+    collections::{HashMap, HashSet},
+    fs,
+    path::PathBuf,
+    str::FromStr,
+    sync::Arc,
+};
 
 use futures::{sink::SinkExt, stream::StreamExt};
 use hyper::{body, Body, Method, Request, Response, StatusCode};
@@ -13,6 +19,7 @@ use rbx_dom_weak::{
 };
 
 use crate::{
+    json,
     serve_session::ServeSession,
     snapshot::{InstanceWithMeta, PatchSet, PatchUpdate},
     web::{
@@ -21,11 +28,9 @@ use crate::{
             ServerInfoResponse, SocketPacket, SocketPacketBody, SocketPacketType, SubscribeMessage,
             WriteRequest, WriteResponse, PROTOCOL_VERSION, SERVER_VERSION,
         },
-        util::{deserialize_msgpack, msgpack, msgpack_ok, serialize_msgpack},
+        util::{json, json_ok},
-    },
-    web_api::{
-        InstanceUpdate, RefPatchRequest, RefPatchResponse, SerializeRequest, SerializeResponse,
     },
+    web_api::{BufferEncode, InstanceUpdate, RefPatchResponse, SerializeResponse},
 };
 
 pub async fn call(serve_session: Arc<ServeSession>, mut request: Request<Body>) -> Response<Body> {
@@ -40,7 +45,7 @@ pub async fn call(serve_session: Arc<ServeSession>, mut request: Request<Body>)
             if is_upgrade_request(&request) {
                 service.handle_api_socket(&mut request).await
             } else {
-                msgpack(
+                json(
                     ErrorResponse::bad_request(
                         "/api/socket must be called as a websocket upgrade request",
                     ),
@@ -48,15 +53,19 @@ pub async fn call(serve_session: Arc<ServeSession>, mut request: Request<Body>)
                 )
             }
         }
-        (&Method::POST, "/api/serialize") => service.handle_api_serialize(request).await,
+        (&Method::GET, path) if path.starts_with("/api/serialize/") => {
-        (&Method::POST, "/api/ref-patch") => service.handle_api_ref_patch(request).await,
+            service.handle_api_serialize(request).await
+        }
+        (&Method::GET, path) if path.starts_with("/api/ref-patch/") => {
+            service.handle_api_ref_patch(request).await
+        }
 
         (&Method::POST, path) if path.starts_with("/api/open/") => {
             service.handle_api_open(request).await
         }
         (&Method::POST, "/api/write") => service.handle_api_write(request).await,
 
-        (_method, path) => msgpack(
+        (_method, path) => json(
             ErrorResponse::not_found(format!("Route not found: {}", path)),
             StatusCode::NOT_FOUND,
         ),
@@ -77,7 +86,7 @@ impl ApiService {
         let tree = self.serve_session.tree();
         let root_instance_id = tree.get_root_id();
 
-        msgpack_ok(&ServerInfoResponse {
+        json_ok(&ServerInfoResponse {
             server_version: SERVER_VERSION.to_owned(),
             protocol_version: PROTOCOL_VERSION,
             session_id: self.serve_session.session_id(),
@@ -96,7 +105,7 @@ impl ApiService {
         let input_cursor: u32 = match argument.parse() {
             Ok(v) => v,
             Err(err) => {
-                return msgpack(
+                return json(
                     ErrorResponse::bad_request(format!("Malformed message cursor: {}", err)),
                     StatusCode::BAD_REQUEST,
                 );
@@ -107,7 +116,7 @@ impl ApiService {
         let (response, websocket) = match upgrade(request, None) {
             Ok(result) => result,
             Err(err) => {
-                return msgpack(
+                return json(
                     ErrorResponse::internal_error(format!("WebSocket upgrade failed: {}", err)),
                     StatusCode::INTERNAL_SERVER_ERROR,
                 );
@@ -134,10 +143,10 @@ impl ApiService {
 
         let body = body::to_bytes(request.into_body()).await.unwrap();
 
-        let request: WriteRequest = match deserialize_msgpack(&body) {
+        let request: WriteRequest = match json::from_slice(&body) {
             Ok(request) => request,
             Err(err) => {
-                return msgpack(
+                return json(
                     ErrorResponse::bad_request(format!("Invalid body: {}", err)),
                     StatusCode::BAD_REQUEST,
                 );
@@ -145,7 +154,7 @@ impl ApiService {
         };
 
         if request.session_id != session_id {
-            return msgpack(
+            return json(
                 ErrorResponse::bad_request("Wrong session ID"),
                 StatusCode::BAD_REQUEST,
             );
@@ -171,7 +180,7 @@ impl ApiService {
             })
             .unwrap();
 
-        msgpack_ok(WriteResponse { session_id })
+        json_ok(WriteResponse { session_id })
     }
 
     async fn handle_api_read(&self, request: Request<Body>) -> Response<Body> {
@@ -181,7 +190,7 @@ impl ApiService {
         let requested_ids = match requested_ids {
             Ok(ids) => ids,
             Err(_) => {
-                return msgpack(
+                return json(
                     ErrorResponse::bad_request("Malformed ID list"),
                     StatusCode::BAD_REQUEST,
                 );
@@ -205,7 +214,7 @@ impl ApiService {
             }
         }
 
-        msgpack_ok(ReadResponse {
+        json_ok(ReadResponse {
             session_id: self.serve_session.session_id(),
             message_cursor,
             instances,
@@ -220,30 +229,22 @@ impl ApiService {
     /// that correspond to the requested Instances. These values have their
     /// `Value` property set to point to the requested Instance.
     async fn handle_api_serialize(&self, request: Request<Body>) -> Response<Body> {
-        let session_id = self.serve_session.session_id();
+        let argument = &request.uri().path()["/api/serialize/".len()..];
-        let body = body::to_bytes(request.into_body()).await.unwrap();
+        let requested_ids: Result<Vec<Ref>, _> = argument.split(',').map(Ref::from_str).collect();
 
-        let request: SerializeRequest = match deserialize_msgpack(&body) {
+        let requested_ids = match requested_ids {
-            Ok(request) => request,
+            Ok(ids) => ids,
-            Err(err) => {
+            Err(_) => {
-                return msgpack(
+                return json(
-                    ErrorResponse::bad_request(format!("Invalid body: {}", err)),
+                    ErrorResponse::bad_request("Malformed ID list"),
                     StatusCode::BAD_REQUEST,
                 );
             }
         };
-
-        if request.session_id != session_id {
-            return msgpack(
-                ErrorResponse::bad_request("Wrong session ID"),
-                StatusCode::BAD_REQUEST,
-            );
-        }
-
         let mut response_dom = WeakDom::new(InstanceBuilder::new("Folder"));
 
         let tree = self.serve_session.tree();
-        for id in &request.ids {
+        for id in &requested_ids {
             if let Some(instance) = tree.get_instance(*id) {
                 let clone = response_dom.insert(
                     Ref::none(),
@@ -267,7 +268,7 @@ impl ApiService {
 
                 response_dom.transfer_within(child_ref, object_value);
             } else {
-                msgpack(
+                json(
                     ErrorResponse::bad_request(format!("provided id {id} is not in the tree")),
                     StatusCode::BAD_REQUEST,
                 );
@@ -278,9 +279,9 @@ impl ApiService {
         let mut source = Vec::new();
         rbx_binary::to_writer(&mut source, &response_dom, &[response_dom.root_ref()]).unwrap();
 
-        msgpack_ok(SerializeResponse {
+        json_ok(SerializeResponse {
             session_id: self.serve_session.session_id(),
-            model_contents: source,
+            model_contents: BufferEncode::new(source),
         })
     }
 
@@ -289,26 +290,20 @@ impl ApiService {
     /// and referent properties need to be updated after the serialize
     /// endpoint is used.
     async fn handle_api_ref_patch(self, request: Request<Body>) -> Response<Body> {
-        let session_id = self.serve_session.session_id();
+        let argument = &request.uri().path()["/api/ref-patch/".len()..];
-        let body = body::to_bytes(request.into_body()).await.unwrap();
+        let requested_ids: Result<HashSet<Ref>, _> =
+            argument.split(',').map(Ref::from_str).collect();
 
-        let request: RefPatchRequest = match deserialize_msgpack(&body) {
+        let requested_ids = match requested_ids {
-            Ok(request) => request,
+            Ok(ids) => ids,
-            Err(err) => {
+            Err(_) => {
-                return msgpack(
+                return json(
-                    ErrorResponse::bad_request(format!("Invalid body: {}", err)),
+                    ErrorResponse::bad_request("Malformed ID list"),
                     StatusCode::BAD_REQUEST,
                 );
             }
         };
 
-        if request.session_id != session_id {
-            return msgpack(
-                ErrorResponse::bad_request("Wrong session ID"),
-                StatusCode::BAD_REQUEST,
-            );
-        }
-
         let mut instance_updates: HashMap<Ref, InstanceUpdate> = HashMap::new();
 
         let tree = self.serve_session.tree();
@@ -317,7 +312,7 @@ impl ApiService {
                 let Variant::Ref(prop_value) = prop_value else {
                     continue;
                 };
-                if let Some(target_id) = request.ids.get(prop_value) {
+                if let Some(target_id) = requested_ids.get(prop_value) {
                     let instance_id = instance.id();
                     let update =
                         instance_updates
@@ -336,7 +331,7 @@ impl ApiService {
             }
         }
 
-        msgpack_ok(RefPatchResponse {
+        json_ok(RefPatchResponse {
             session_id: self.serve_session.session_id(),
             patch: SubscribeMessage {
                 added: HashMap::new(),
@@ -352,7 +347,7 @@ impl ApiService {
         let requested_id = match Ref::from_str(argument) {
             Ok(id) => id,
             Err(_) => {
-                return msgpack(
+                return json(
                     ErrorResponse::bad_request("Invalid instance ID"),
                     StatusCode::BAD_REQUEST,
                 );
@@ -364,7 +359,7 @@ impl ApiService {
         let instance = match tree.get_instance(requested_id) {
             Some(instance) => instance,
             None => {
-                return msgpack(
+                return json(
                     ErrorResponse::bad_request("Instance not found"),
                     StatusCode::NOT_FOUND,
                 );
@@ -374,7 +369,7 @@ impl ApiService {
         let script_path = match pick_script_path(instance) {
             Some(path) => path,
             None => {
-                return msgpack(
+                return json(
                     ErrorResponse::bad_request(
                         "No appropriate file could be found to open this script",
                     ),
@@ -387,7 +382,7 @@ impl ApiService {
             Ok(()) => {}
             Err(error) => match error {
                 OpenError::Io(io_error) => {
-                    return msgpack(
+                    return json(
                         ErrorResponse::internal_error(format!(
                             "Attempting to open {} failed because of the following io error: {}",
                             script_path.display(),
@@ -401,7 +396,7 @@ impl ApiService {
                     status,
                     stderr,
                 } => {
-                    return msgpack(
+                    return json(
                         ErrorResponse::internal_error(format!(
                             r#"The command '{}' to open '{}' failed with the error code '{}'.
                             Error logs:
@@ -417,7 +412,7 @@ impl ApiService {
             },
         };
 
-        msgpack_ok(OpenResponse {
+        json_ok(OpenResponse {
             session_id: self.serve_session.session_id(),
         })
     }
@@ -481,7 +476,7 @@ async fn handle_websocket_subscription(
                 match result {
                     Ok((new_cursor, messages)) => {
                         if !messages.is_empty() {
-                            let msgpack_message = {
+                            let json_message = {
                                 let tree = tree_handle.lock().unwrap();
                                 let api_messages = messages
                                     .into_iter()
@@ -497,12 +492,12 @@ async fn handle_websocket_subscription(
                                     }),
                                 };
 
-                                serialize_msgpack(response)?
+                                serde_json::to_string(&response)?
                             };
 
                             log::debug!("Sending batch of messages over WebSocket subscription");
 
-                            if websocket.send(Message::Binary(msgpack_message)).await.is_err() {
+                            if websocket.send(Message::Text(json_message)).await.is_err() {
                                 // Client disconnected
                                 log::debug!("WebSocket subscription closed by client");
                                 break;

src/web/interface.rs

@@ -238,26 +238,35 @@ pub struct OpenResponse {
     pub session_id: SessionId,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub struct SerializeRequest {
-    pub session_id: SessionId,
-    pub ids: Vec<Ref>,
-}
-
 #[derive(Debug, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct SerializeResponse {
     pub session_id: SessionId,
-    #[serde(with = "serde_bytes")]
+    pub model_contents: BufferEncode,
-    pub model_contents: Vec<u8>,
 }
 
+/// Using this struct we can force Roblox to JSONDecode this as a buffer.
+/// This is what Roblox's serde APIs use, so it saves a step in the plugin.
 #[derive(Debug, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
+pub struct BufferEncode {
-pub struct RefPatchRequest {
+    m: (),
-    pub session_id: SessionId,
+    t: Cow<'static, str>,
-    pub ids: HashSet<Ref>,
+    base64: String,
+}
+
+impl BufferEncode {
+    pub fn new(content: Vec<u8>) -> Self {
+        let base64 = data_encoding::BASE64.encode(&content);
+        Self {
+            m: (),
+            t: Cow::Borrowed("buffer"),
+            base64,
+        }
+    }
+
+    pub fn model(&self) -> &str {
+        &self.base64
+    }
 }
 
 #[derive(Debug, Serialize, Deserialize)]

src/web/util.rs

@@ -1,48 +1,8 @@
 use hyper::{header::CONTENT_TYPE, Body, Response, StatusCode};
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 
-pub fn msgpack_ok<T: Serialize>(value: T) -> Response<Body> {
+pub fn json_ok<T: Serialize>(value: T) -> Response<Body> {
-    msgpack(value, StatusCode::OK)
+    json(value, StatusCode::OK)
-}
-
-pub fn msgpack<T: Serialize>(value: T, code: StatusCode) -> Response<Body> {
-    let mut serialized = Vec::new();
-    let mut serializer = rmp_serde::Serializer::new(&mut serialized)
-        .with_human_readable()
-        .with_struct_map();
-
-    if let Err(err) = value.serialize(&mut serializer) {
-        return Response::builder()
-            .status(StatusCode::INTERNAL_SERVER_ERROR)
-            .header(CONTENT_TYPE, "text/plain")
-            .body(Body::from(err.to_string()))
-            .unwrap();
-    };
-
-    Response::builder()
-        .status(code)
-        .header(CONTENT_TYPE, "application/msgpack")
-        .body(Body::from(serialized))
-        .unwrap()
-}
-
-pub fn serialize_msgpack<T: Serialize>(value: T) -> anyhow::Result<Vec<u8>> {
-    let mut serialized = Vec::new();
-    let mut serializer = rmp_serde::Serializer::new(&mut serialized)
-        .with_human_readable()
-        .with_struct_map();
-
-    value.serialize(&mut serializer)?;
-
-    Ok(serialized)
-}
-
-pub fn deserialize_msgpack<'a, T: Deserialize<'a>>(
-    input: &'a [u8],
-) -> Result<T, rmp_serde::decode::Error> {
-    let mut deserializer = rmp_serde::Deserializer::new(input).with_human_readable();
-
-    T::deserialize(&mut deserializer)
 }
 
 pub fn json<T: Serialize>(value: T, code: StatusCode) -> Response<Body> {

test-projects/relative_paths/default.project.json

@@ -1,14 +0,0 @@
-{
-  "name": "default",
-  "tree": {
-    "$className": "DataModel",
-    "ReplicatedStorage": {
-      "Project": {
-        "$path": "project/src",
-        "Module": {
-          "$path": "module"
-        }
-      }
-    }
-  }
-}

test-projects/relative_paths/module/module.luau

@@ -1 +0,0 @@
-return nil

test-projects/relative_paths/project/default.project.json

@@ -1,14 +0,0 @@
-{
-  "name": "default",
-  "tree": {
-    "$className": "DataModel",
-    "ReplicatedStorage": {
-      "Project": {
-        "$path": "src/",
-        "Module": {
-          "$path": "../module"
-        }
-      }
-    }
-  }
-}

test-projects/relative_paths/project/src/init.luau

@@ -1 +0,0 @@
-return nil

tests/rojo_test/serve_util.rs

@@ -1,4 +1,5 @@
 use std::{
+    fmt::Write as _,
     fs,
     path::{Path, PathBuf},
     process::Command,
@@ -10,15 +11,10 @@ use std::{
 use hyper_tungstenite::tungstenite::{connect, Message};
 use rbx_dom_weak::types::Ref;
 
-use serde::{Deserialize, Serialize};
 use tempfile::{tempdir, TempDir};
 
-use librojo::{
+use librojo::web_api::{
-    web_api::{
+    ReadResponse, SerializeResponse, ServerInfoResponse, SocketPacket, SocketPacketType,
-        ReadResponse, SerializeRequest, SerializeResponse, ServerInfoResponse, SocketPacket,
-        SocketPacketType,
-    },
-    SessionId,
 };
 use rojo_insta_ext::RedactionMap;
 
@@ -162,16 +158,22 @@ impl TestServeSession {
 
     pub fn get_api_rojo(&self) -> Result<ServerInfoResponse, reqwest::Error> {
         let url = format!("http://localhost:{}/api/rojo", self.port);
-        let body = reqwest::blocking::get(url)?.bytes()?;
+        let body = reqwest::blocking::get(url)?.text()?;
 
-        Ok(deserialize_msgpack(&body).expect("Server returned malformed response"))
+        let value = jsonc_parser::parse_to_serde_value(&body, &Default::default())
+            .expect("Failed to parse JSON")
+            .expect("No JSON value");
+        Ok(serde_json::from_value(value).expect("Server returned malformed response"))
     }
 
     pub fn get_api_read(&self, id: Ref) -> Result<ReadResponse<'_>, reqwest::Error> {
         let url = format!("http://localhost:{}/api/read/{}", self.port, id);
-        let body = reqwest::blocking::get(url)?.bytes()?;
+        let body = reqwest::blocking::get(url)?.text()?;
 
-        Ok(deserialize_msgpack(&body).expect("Server returned malformed response"))
+        let value = jsonc_parser::parse_to_serde_value(&body, &Default::default())
+            .expect("Failed to parse JSON")
+            .expect("No JSON value");
+        Ok(serde_json::from_value(value).expect("Server returned malformed response"))
     }
 
     pub fn get_api_socket_packet(
@@ -193,8 +195,8 @@ impl TestServeSession {
             }
 
             match socket.read() {
-                Ok(Message::Binary(binary)) => {
+                Ok(Message::Text(text)) => {
-                    let packet: SocketPacket = deserialize_msgpack(&binary)?;
+                    let packet: SocketPacket = serde_json::from_str(&text)?;
                     if packet.packet_type != packet_type {
                         continue;
                     }
@@ -207,7 +209,7 @@ impl TestServeSession {
                     return Err("WebSocket closed before receiving messages".into());
                 }
                 Ok(_) => {
-                    // Ignore other message types (ping, pong, text)
+                    // Ignore other message types (ping, pong, binary)
                     continue;
                 }
                 Err(hyper_tungstenite::tungstenite::Error::Io(e))
@@ -224,44 +226,19 @@ impl TestServeSession {
         }
     }
 
-    pub fn get_api_serialize(
+    pub fn get_api_serialize(&self, ids: &[Ref]) -> Result<SerializeResponse, reqwest::Error> {
-        &self,
+        let mut id_list = String::with_capacity(ids.len() * 33);
-        ids: &[Ref],
+        for id in ids {
-        session_id: SessionId,
+            write!(id_list, "{id},").unwrap();
-    ) -> Result<SerializeResponse, reqwest::Error> {
+        }
-        let client = reqwest::blocking::Client::new();
+        id_list.pop();
-        let url = format!("http://localhost:{}/api/serialize", self.port);
-        let body = serialize_msgpack(&SerializeRequest {
-            session_id,
-            ids: ids.to_vec(),
-        })
-        .unwrap();
 
-        let body = client.post(url).body(body).send()?.bytes()?;
+        let url = format!("http://localhost:{}/api/serialize/{}", self.port, id_list);
 
-        Ok(deserialize_msgpack(&body).expect("Server returned malformed response"))
+        reqwest::blocking::get(url)?.json()
     }
 }
 
-fn serialize_msgpack<T: Serialize>(value: T) -> Result<Vec<u8>, rmp_serde::encode::Error> {
-    let mut serialized = Vec::new();
-    let mut serializer = rmp_serde::Serializer::new(&mut serialized)
-        .with_human_readable()
-        .with_struct_map();
-
-    value.serialize(&mut serializer)?;
-
-    Ok(serialized)
-}
-
-fn deserialize_msgpack<'a, T: Deserialize<'a>>(
-    input: &'a [u8],
-) -> Result<T, rmp_serde::decode::Error> {
-    let mut deserializer = rmp_serde::Deserializer::new(input).with_human_readable();
-
-    T::deserialize(&mut deserializer)
-}
-
 /// Probably-okay way to generate random enough port numbers for running the
 /// Rojo live server.
 ///
@@ -279,7 +256,11 @@ fn get_port_number() -> usize {
 /// Since the provided structure intentionally includes unredacted referents,
 /// some post-processing is done to ensure they don't show up in the model.
 pub fn serialize_to_xml_model(response: &SerializeResponse, redactions: &RedactionMap) -> String {
-    let mut dom = rbx_binary::from_reader(response.model_contents.as_slice()).unwrap();
+    let model_content = data_encoding::BASE64
+        .decode(response.model_contents.model().as_bytes())
+        .unwrap();
+
+    let mut dom = rbx_binary::from_reader(model_content.as_slice()).unwrap();
     // This makes me realize that maybe we need a `descendants_mut` iter.
     let ref_list: Vec<Ref> = dom.descendants().map(|inst| inst.referent()).collect();
     for referent in ref_list {

tests/tests/serve.rs

@@ -646,7 +646,7 @@ fn meshpart_with_id() {
             .unwrap();
 
         let serialize_response = session
-            .get_api_serialize(&[*meshpart, *objectvalue], info.session_id)
+            .get_api_serialize(&[*meshpart, *objectvalue])
             .unwrap();
 
         // We don't assert a snapshot on the SerializeResponse because the model includes the
@@ -673,9 +673,7 @@ fn forced_parent() {
             read_response.intern_and_redact(&mut redactions, root_id)
         );
 
-        let serialize_response = session
+        let serialize_response = session.get_api_serialize(&[root_id]).unwrap();
-            .get_api_serialize(&[root_id], info.session_id)
-            .unwrap();
 
         assert_eq!(serialize_response.session_id, info.session_id);