fix: not config tseslint twice

The ts style guide typically depend on tseslint, so there's no need
to install it separately. Doing so might result in multiple versions
being installed, leading to errors.

fixes #97, #98

lib/config-generator.js

@@ -144,6 +144,13 @@ export class ConfigGenerator {
             this.answers.framework = "none";
         }
 
+        // tseslint should have been set in the shared configs
+        // avoid setting it twice - it may install multi tseslint version
+        // see https://github.com/eslint/create-config/issues/93
+        if (this.answers.styleguide && this.answers.language === "typescript") {
+            this.answers.language = "javascript";
+        }
+
         let importContent = "";
         const helperContent = `import path from "path";
 import { fileURLToPath } from "url";

tests/__snapshots__/style-esm-none-xo-typescript

@@ -1,6 +1,5 @@
 {
   "configContent": "import globals from "globals";
-import tseslint from "typescript-eslint";
 
 import path from "path";
 import { fileURLToPath } from "url";
@@ -15,7 +14,6 @@ const compat = new FlatCompat({baseDirectory: __dirname, recommendedConfig: plug
 export default [
   {languageOptions: { globals: globals.browser }},
   ...compat.extends("xo-typescript"),
-  ...tseslint.configs.recommended,
 ];",
   "configFilename": "eslint.config.mjs",
   "devDependencies": [
@@ -26,7 +24,6 @@ export default [
     "@typescript-eslint/parser@>=7.0.2",
     "eslint@>=8.56.0",
     "typescript@>=5.0.0",
-    "typescript-eslint",
     "@eslint/eslintrc",
     "@eslint/js",
   ],