fix: do not use ts-ignore

Author: aladdin-add

lib/configs/all.js

@@ -7,8 +7,12 @@
 const { allRulesConfig } = require("./_commons")
 const recommendeConfig = require("./recommended")
 
+/**
+ * https://eslint.org/docs/latest/use/configure/configuration-files-new
+ * @type {import('eslint').Linter.FlatConfig}
+ */
 exports.flat = {
     name: "node/flat/all",
-    languageOptions: recommendeConfig.flat.languageOptions,
+    languageOptions: recommendeConfig.flat.languageOptions ?? {},
     rules: allRulesConfig,
 }

lib/index.js

@@ -43,7 +43,6 @@ const configs = {
         { files: ["**/*.mjs"], plugins: { n: base }, ...esmConfig.flat },
         { files: ["**/*.cjs"], plugins: { n: base }, ...cjsConfig.flat },
     ],
-    // @ts-ignore -- tsc warns incompatible languageOptions, but it's fine
     "flat/all": { plugins: { n: base }, ...allRulesConfig.flat },
 }