update to eslint 9

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: lukasvice

.eslintrc.json

@@ -0,0 +1,22 @@
+import jest from '@aboutbits/eslint-config/configs/jest'
+import ts from '@aboutbits/eslint-config/configs/ts'
+import { defineConfig } from 'eslint/config'
+
+export default defineConfig([
+  ts,
+  jest,
+  {
+    rules: {
+      'import/order': 'error',
+    },
+  },
+  {
+    files: ['**/*.ts', '**/*.tsx'],
+    rules: {
+      '@typescript-eslint/explicit-function-return-type': 'error',
+    },
+  },
+  {
+    ignores: ['node_modules', 'dist'],
+  },
+])

eslint.config.mjs

@@ -37,7 +37,7 @@
     "build": "npm run build:node && npm run build:esm",
     "build:node": "tsc",
     "build:esm": "tsc --project tsconfig.esnext.json",
-    "lint": "eslint --ext js,ts,tsx src",
+    "lint": "eslint --cache",
     "lint:fix": "npm run lint -- --fix",
     "typecheck": "tsc --noEmit",
     "test": "jest --config jestconfig.json --passWithNoTests",
@@ -47,14 +47,9 @@
     "postversion": "git push && git push --tags"
   },
   "devDependencies": {
+    "@aboutbits/eslint-config": "^5.1.0",
     "@types/jest": "^29.5.12",
-    "@typescript-eslint/eslint-plugin": "^7.3.1",
-    "@typescript-eslint/parser": "^7.3.1",
-    "eslint": "^8.57.0",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-import": "^2.29.1",
-    "eslint-plugin-jest": "^27.9.0",
-    "eslint-plugin-prettier": "^5.1.3",
+    "eslint": "^9.39.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "prettier": "^3.2.5",