From 66ab161a55ee8fdd7346f85db1c6acc527d47dad Mon Sep 17 00:00:00 2001
From: Arechi <aglimbenli@gmail.com>
Date: Thu, 30 Apr 2026 13:32:03 +0200
Subject: [PATCH] build: convert TypeScript package to ESM-only

Switches the npm package from CommonJS to ESM-only output.

- tsconfig.json: module/moduleResolution NodeNext, target ES2022
- package.json: adds "type": "module" and "exports" map; drops "main"
- CI Generate: adds esModuleInterop=true and importSuffix=.js so
  ts-proto emits relative imports with .js extensions for NodeNext

Breaking change for CommonJS consumers (require() is blocked by the
exports map); a major version bump should accompany this before
publishing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 .github/workflows/ci-typescript.yaml |  4 +++-
 package.json                         | 10 ++++++++--
 tsconfig.json                        |  5 +++--
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci-typescript.yaml b/.github/workflows/ci-typescript.yaml
index 1c174753..9d382b1a 100644
--- a/.github/workflows/ci-typescript.yaml
+++ b/.github/workflows/ci-typescript.yaml
@@ -45,7 +45,9 @@ jobs:
             --ts_proto_out=./out \
             --ts_proto_opt=outputIndex=true \
             --ts_proto_opt=globalThisPolyfill=true \
-            --ts_proto_opt=useExactTypes=false
+            --ts_proto_opt=useExactTypes=false \
+            --ts_proto_opt=esModuleInterop=true \
+            --ts_proto_opt=importSuffix=.js
 
       - name: Compile
         run: pnpm run build
diff --git a/package.json b/package.json
index aa763b88..e5dbd325 100644
--- a/package.json
+++ b/package.json
@@ -7,8 +7,14 @@
     "type": "git",
     "url": "https://github.com/BluEye-Robotics/ProtocolDefinitions.git"
   },
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "type": "module",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "types": "./dist/index.d.ts",
   "files": [
     "dist"
   ],
diff --git a/tsconfig.json b/tsconfig.json
index fc30754e..54339cbc 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,8 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
-    "module": "CommonJS",
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
     "declaration": true,
     "outDir": "dist",
     "strict": true,