chore: update ESLint to v9

Author: dan-mba

.eslintrc.cjs

@@ -0,0 +1,23 @@
+// @ts-check
+
+import globals from 'globals';
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+
+export default tseslint.config(
+  {
+    ignores: ['prod/**/*', 'jest.config.ts'],
+  },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.jest,
+        ...globals.node,
+      },
+    },
+  },
+  eslintPluginPrettierRecommended,
+);