Simplified eslint config and fixed a few linting errors

Author: jamessimone

eslint.config.cjs

@@ -0,0 +1,10 @@
+import eslint from '@eslint/js';
+import { defineConfig } from 'eslint/config';
+import tseslint from 'typescript-eslint';
+
+export default defineConfig([
+  {
+    files: ['src/**/*.ts', 'test/**/*.ts'],
+    extends: [eslint.configs.recommended, tseslint.configs.recommended],
+  },
+]);