feat(workspace): use tsdown

Author: nekomeowww

cspell.config.yaml

@@ -1,4 +1,10 @@
 words:
+  - Ayaka
   - bumpp
   - defu
   - gpuu
+  - Neko
+  - taze
+  - tsdown
+  - unrs
+  - webgpu

package.json

@@ -16,43 +16,50 @@
   },
   "exports": {
     ".": {
-      "types": "./dist/index.d.ts",
+      "types": "./dist/index.d.mts",
       "default": "./dist/index.mjs"
     },
     "./webgpu": {
-      "types": "./dist/webgpu/index.d.ts",
+      "types": "./dist/webgpu/index.d.mts",
       "default": "./dist/webgpu/index.mjs"
     }
   },
   "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
-  "types": "./dist/index.d.ts",
+  "types": "./dist/index.d.mts",
   "files": [
     "README.md",
     "dist",
     "package.json"
   ],
   "scripts": {
-    "dev": "pnpm run stub",
-    "stub": "unbuild --stub",
-    "build": "unbuild",
+    "dev": "tsdown",
+    "stub": "tsdown",
+    "build": "tsdown",
     "typecheck": "tsc --noEmit",
     "lint": "eslint .",
     "lint:fix": "eslint --fix .",
+    "attw": "attw --pack . --profile esm-only --ignore-rules cjs-resolves-to-esm",
     "up": "taze -w -r -I -f && pnpm prune && pnpm dedupe"
   },
-  "dependencies": {
-    "defu": "^6.1.4"
-  },
   "devDependencies": {
     "@antfu/eslint-config": "^4.14.1",
-    "@types/node": "^22.15.31",
+    "@arethetypeswrong/cli": "^0.18.2",
+    "@types/node": "^24.0.1",
     "@webgpu/types": "^0.1.61",
     "bumpp": "^10.1.1",
     "eslint": "^9.29.0",
     "eslint-plugin-import-x": "^4.15.2",
     "taze": "^19.1.0",
+    "tsdown": "^0.12.7",
     "typescript": "^5.8.3",
-    "unbuild": "^3.5.0"
+    "unbuild": "^3.5.0",
+    "unplugin-unused": "^0.5.1"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "esbuild",
+      "unrs-resolver"
+    ]
   }
 }