diff --git a/desktop/.eslintrc.js b/desktop/.eslintrc.js
index e8399ab01..070d2a313 100644
--- a/desktop/.eslintrc.js
+++ b/desktop/.eslintrc.js
@@ -144,7 +144,7 @@ module.exports = {
     'flipper/no-relative-imports-across-packages': [2],
     'flipper/no-electron-remote-imports': [1],
     'flipper/no-console-error-without-context': [2],
-    'flipper/no-ts-file-extension': 1,
+    'flipper/no-ts-file-extension': 2,
     'flipper/no-i-prefix-interfaces': 2,
     'communist-spelling/communist-spelling': [1, {allow: ['cancelled']}],
 
@@ -266,7 +266,7 @@ module.exports = {
       files: [
         'plugins/**/__tests__/*.tsx',
         'plugins/**/__tests__/*.ts',
-        'plugins/postinstall.ts',
+        'plugins/postinstall.tsx',
         // TODO: Remove specific plugin overrides down below
         'plugins/fb/kaios-portal/kaios-debugger-client/client.tsx',
         'plugins/public/reactdevtools/index.tsx',
diff --git a/desktop/eslint-plugin-flipper/src/rules/__tests__/noIPrefixInterfaces.node.ts b/desktop/eslint-plugin-flipper/src/rules/__tests__/noIPrefixInterfaces.node.tsx
similarity index 100%
rename from desktop/eslint-plugin-flipper/src/rules/__tests__/noIPrefixInterfaces.node.ts
rename to desktop/eslint-plugin-flipper/src/rules/__tests__/noIPrefixInterfaces.node.tsx
diff --git a/desktop/eslint-plugin-flipper/src/rules/noIPrefixInterfaces.ts b/desktop/eslint-plugin-flipper/src/rules/noIPrefixInterfaces.tsx
similarity index 100%
rename from desktop/eslint-plugin-flipper/src/rules/noIPrefixInterfaces.ts
rename to desktop/eslint-plugin-flipper/src/rules/noIPrefixInterfaces.tsx
diff --git a/desktop/plugins/package.json b/desktop/plugins/package.json
index 70396f731..0999fcf5d 100644
--- a/desktop/plugins/package.json
+++ b/desktop/plugins/package.json
@@ -24,6 +24,6 @@
     "react-dom": "*"
   },
   "scripts": {
-    "postinstall": "cd .. && ./ts-node ./plugins/postinstall.ts"
+    "postinstall": "cd .. && ./ts-node ./plugins/postinstall.tsx"
   }
 }
diff --git a/desktop/plugins/postinstall.ts b/desktop/plugins/postinstall.tsx
similarity index 100%
rename from desktop/plugins/postinstall.ts
rename to desktop/plugins/postinstall.tsx
diff --git a/desktop/plugins/public/reactdevtools/fb-stubs/getInternalDevToolsModule.ts b/desktop/plugins/public/reactdevtools/fb-stubs/getInternalDevToolsModule.tsx
similarity index 100%
rename from desktop/plugins/public/reactdevtools/fb-stubs/getInternalDevToolsModule.ts
rename to desktop/plugins/public/reactdevtools/fb-stubs/getInternalDevToolsModule.tsx