fix: don't use the TypeScript parser for .js files

.eslintrc.json

@@ -1,6 +1,6 @@
 {
   "extends": "./lib/index.js",
   "parserOptions": {
-    "project": "./tsconfig.eslint.json"
+    "project": "./tsconfig.json"
   }
 }

src/index.test.ts

@@ -3,12 +3,12 @@ import exported from '.'
 
 test('export', (t): void => {
   const expected = {
-    parser: '@typescript-eslint/parser',
     extends: 'eslint-config-standard',
     plugins: ['@typescript-eslint'],
     overrides: [
       {
         files: ['*.ts', '*.tsx'],
+        parser: '@typescript-eslint/parser',
         rules: {
           camelcase: 'off',
           indent: 'off',

src/index.ts

@@ -1,10 +1,10 @@
 export = {
-  parser: '@typescript-eslint/parser',
   extends: 'eslint-config-standard',
   plugins: ['@typescript-eslint'],
   overrides: [
     {
       files: ['*.ts', '*.tsx'],
+      parser: '@typescript-eslint/parser',
       rules: {
         // TypeScript has this functionality by default:
         'no-undef': 'off',