perf(config): migrate cosmiconfig to rust and tsx

Closes #282

Author: JamieMason

npm/index.cjs

@@ -15,7 +15,6 @@ process.exit(
     stdio: ['ignore', 'inherit', 'inherit'],
     env: {
       ...process.env,
-      COSMICONFIG_REQUIRE_PATH: require.resolve('cosmiconfig'),
       RUST_BACKTRACE: 'full',
     },
   }).status || 0,

package.json

@@ -34,16 +34,14 @@
     "Stuart Knightley (https://github.com/Stuk)",
     "Tom Fletcher (https://github.com/tom-fletcher)"
   ],
-  "dependencies": {
-    "cosmiconfig": "^9.0.0",
-    "typescript": "^5.8.3"
-  },
   "devDependencies": {
     "@biomejs/biome": "^1.9.4",
     "@release-it/conventional-changelog": "^10.0.1",
     "auto-changelog": "^2.5.0",
     "release-it": "^19.0.3",
-    "ts-json-schema-generator": "^2.4.0"
+    "ts-json-schema-generator": "^2.4.0",
+    "tsx": "^4.20.3",
+    "typescript": "^5.8.3"
   },
   "engines": {
     "node": ">=14.17.0"
@@ -71,5 +69,13 @@
     "yarn"
   ],
   "license": "MIT",
+  "peerDependencies": {
+    "tsx": "4"
+  },
+  "peerDependenciesMeta": {
+    "tsx": {
+      "optional": true
+    }
+  },
   "repository": "JamieMason/syncpack"
 }