feat(create-docusaurus): Newly initialized TS sites should use "strict: true" (#11696)

Co-authored-by: slorber <[email protected]>

Author: slorber

packages/create-docusaurus/templates/classic-typescript/package.json

@@ -27,6 +27,7 @@
     "@docusaurus/module-type-aliases": "3.9.2",
     "@docusaurus/tsconfig": "3.9.2",
     "@docusaurus/types": "3.9.2",
+    "@types/react": "^19.0.0",
     "typescript": "~5.6.2"
   },
   "browserslist": {

packages/create-docusaurus/templates/classic-typescript/tsconfig.json

@@ -1,8 +1,11 @@
+// This file is not used by "docusaurus start/build" commands.
+// It is here to improve your IDE experience (type-checking, autocompletion...),
+// and can also run the package.json "typecheck" script manually.
 {
-  // This file is not used in compilation. It is here just for a nice editor experience.
   "extends": "@docusaurus/tsconfig",
   "compilerOptions": {
-    "baseUrl": "."
+    "baseUrl": ".",
+    "strict": true
   },
   "exclude": [".docusaurus", "build"]
 }

yarn.lock

@@ -4612,7 +4612,7 @@
   dependencies:
     "@types/react" "*"
 
-"@types/react@*", "@types/react@^19.2.10":
+"@types/react@*", "@types/react@^19.0.0", "@types/react@^19.2.10":
   version "19.2.10"
   resolved "https://registry.yarnpkg.com/@types/react/-/react-19.2.10.tgz#f3ea799e6b4cebad6dfd231c238fc9de7652e2d2"
   integrity sha512-WPigyYuGhgZ/cTPRXB2EwUw+XvsRA3GqHlsP4qteqrnnjDrApbS7MxcGr/hke5iUoeB7E/gQtrs9I37zAJ0Vjw==