feat: Add devtools packages

default.project.json

@@ -5,6 +5,15 @@
         "React": {
             "$path": "packages/react/default.project.json"
         },
+        "ReactDebugTools": {
+            "$path": "packages/react-debug-tools/default.project.json"
+        },
+        "ReactDevtoolsShared": {
+            "$path": "packages/react-devtools-shared/default.project.json"
+        },
+        "ReactIs": {
+            "$path": "packages/react-is/default.project.json"
+        },
         "ReactReconciler": {
             "$path": "packages/react-reconciler/default.project.json"
         },

packages/react-debug-tools/default.project.json

@@ -0,0 +1,6 @@
+{
+  "name": "react-debug-tools",
+  "tree": {
+    "$path": "src/"
+  }
+}

packages/react-debug-tools/src/ReactDebugTools.lua

@@ -0,0 +1,20 @@
+-- ROBLOX upstream: https://github.com/facebook/react/blob/v17.0.2/packages/react-debug-tools/src/ReactDebugTools.js
+--[[*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ ]]
+local exports = {}
+local reactDebugHooksModule = require(script.Parent.ReactDebugHooks)
+-- ROBLOX deviation START: add re-exporting of types
+export type HooksNode = reactDebugHooksModule.HooksNode
+export type HooksTree = reactDebugHooksModule.HooksTree
+-- ROBLOX deviation END
+local inspectHooks = reactDebugHooksModule.inspectHooks
+local inspectHooksOfFiber = reactDebugHooksModule.inspectHooksOfFiber
+exports.inspectHooks = inspectHooks
+exports.inspectHooksOfFiber = inspectHooksOfFiber
+return exports