From 0067b2d53358afa93ff93dff5acc00bdd33a49b7 Mon Sep 17 00:00:00 2001
From: Alexander Brandon Coles <a.coles@openproject.com>
Date: Sun, 7 Jun 2026 18:23:21 +0100
Subject: [PATCH] Fix frontend tsconfig for TypeScript 6.0

TypeScript 6.0 requires an explicit `rootDir` when linked-plugin
symlinks push the common source directory outside the project (TS5011),
and type declarations even for side-effect imports such as
`moment/locale/*` (TS2882). Angular 22 also rejects
`extendedDiagnostics` while `strictTemplates` is off (NG4003).
---
 frontend/src/typings/moment-locales.d.ts | 3 +++
 frontend/tsconfig.app.json               | 7 +------
 frontend/tsconfig.spec.json              | 6 ------
 3 files changed, 4 insertions(+), 12 deletions(-)
 create mode 100644 frontend/src/typings/moment-locales.d.ts

diff --git a/frontend/src/typings/moment-locales.d.ts b/frontend/src/typings/moment-locales.d.ts
new file mode 100644
index 00000000000..9b04389a222
--- /dev/null
+++ b/frontend/src/typings/moment-locales.d.ts
@@ -0,0 +1,3 @@
+// moment ships its locale files without type declarations.
+// TypeScript 6.0 requires declarations even for side-effect imports (TS2882).
+declare module 'moment/locale/*';
diff --git a/frontend/tsconfig.app.json b/frontend/tsconfig.app.json
index 9e2448f92ac..ceec1001548 100644
--- a/frontend/tsconfig.app.json
+++ b/frontend/tsconfig.app.json
@@ -2,6 +2,7 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "outDir": "./out-tsc/app",
+    "rootDir": "..",
     "jsx": "react-jsx",
     "types": []
   },
@@ -21,12 +22,6 @@
     "src/stimulus/controllers/**/*.spec.ts"
   ],
   "angularCompilerOptions": {
-    "extendedDiagnostics": {
-      "checks": {
-        "nullishCoalescingNotNullable": "suppress",
-        "optionalChainNotNullable": "suppress"
-      }
-    },
     "strictTemplates": false
   },
   "types": [
diff --git a/frontend/tsconfig.spec.json b/frontend/tsconfig.spec.json
index 07113fefd61..5d27a730bcb 100644
--- a/frontend/tsconfig.spec.json
+++ b/frontend/tsconfig.spec.json
@@ -20,12 +20,6 @@
     "src/app/**/*.module.ts"
   ],
   "angularCompilerOptions": {
-    "extendedDiagnostics": {
-      "checks": {
-        "nullishCoalescingNotNullable": "suppress",
-        "optionalChainNotNullable": "suppress"
-      }
-    },
     "strictTemplates": false
   }
 }