From 67baa34299dcc2be8724b995ac4f3fc18777c3fb Mon Sep 17 00:00:00 2001
From: David Julian Albers <dev@davidjalbers.com>
Date: Mon, 13 Jul 2026 19:21:51 +0200
Subject: [PATCH] feat(config): add tsconfig-next subpath export
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Shared compiler options for Next.js apps. include/exclude and paths stay
in the extending app — TypeScript resolves them relative to the file
that declares them.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 .changeset/wide-configs-extend.md  |  5 +++++
 packages/config/package.json       |  6 ++++--
 packages/config/tsconfig-next.json | 22 ++++++++++++++++++++++
 3 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/wide-configs-extend.md
 create mode 100644 packages/config/tsconfig-next.json

diff --git a/.changeset/wide-configs-extend.md b/.changeset/wide-configs-extend.md
new file mode 100644
index 0000000..1fb2f4d
--- /dev/null
+++ b/.changeset/wide-configs-extend.md
@@ -0,0 +1,5 @@
+---
+"@plexus-ms/config": minor
+---
+
+Add the `tsconfig-next` subpath export: the shared TypeScript compiler options for Next.js apps — `"extends": "@plexus-ms/config/tsconfig-next"`. `include`/`exclude` and `paths` stay in the extending app, since TypeScript resolves them relative to the file that declares them.
diff --git a/packages/config/package.json b/packages/config/package.json
index 1512059..5524461 100644
--- a/packages/config/package.json
+++ b/packages/config/package.json
@@ -4,10 +4,12 @@
   "description": "Shared tool configurations for Plexus repos — each an extend-in-one-line subpath export (§ 9 PLX).",
   "license": "GPL-3.0-or-later",
   "files": [
-    "biome.json"
+    "biome.json",
+    "tsconfig-next.json"
   ],
   "exports": {
-    "./biome": "./biome.json"
+    "./biome": "./biome.json",
+    "./tsconfig-next": "./tsconfig-next.json"
   },
   "repository": {
     "type": "git",
diff --git a/packages/config/tsconfig-next.json b/packages/config/tsconfig-next.json
new file mode 100644
index 0000000..ac9997b
--- /dev/null
+++ b/packages/config/tsconfig-next.json
@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "react-jsx",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ]
+  }
+}