internal: fix build watch command

Author: js2me

package.json

@@ -5,7 +5,7 @@
     "clean": "rimraf dist",
     "check": "eslint . --fix",
     "prebuild": "npm run clean && npm run check",
-    "build:watch": "concurrently \"tsc --watch\" \"node ./post-build.mjs\"",
+    "build:watch": "nodemon --watch src --ext ts --exec \"tsc && node ./post-build.mjs\"",
     "build": "tsc && node ./post-build.mjs",
     "pub": "PUBLISH=true pnpm run build",
     "prepublish": "pnpm test",
@@ -51,7 +51,7 @@
     "@types/react": "^18.3.3",
     "@vitejs/plugin-react-swc": "^3.7.2",
     "@vitest/coverage-istanbul": "^2.1.6",
-    "concurrently": "^8.2.2",
+    "nodemon": "^3.1.0",
     "eslint": "^8.57.0",
     "js2me-eslint-config": "^1.0.6",
     "js2me-exports-post-build-script": "^2.0.18",