Update pr-9473

changelog_unreleased/typescript/pr-9473.md

@@ -1,6 +1,24 @@
 #### [HIGHLIGHT]Support TypeScript 4.1 via Babel (#9473 by @sosukesuzuki)
 
-`--parser=babel-ts` is required.
+If you want to format TypeScript 4.1 features, please update your configuration file to use the `babel-ts` parser as below:
+
+```diff
+// .prettierrc
+{
++  "overrides": [
++    {
++      "files": "*.ts",
++      "options": {
++        "parser": "babel-ts"
++      }
++    }
++  ]
+}
+```
+
+See documentation for [Configuration Overrides](https://prettier.io/docs/en/configuration.html#configuration-overrides) and [Parser Options](https://prettier.io/docs/en/options.html#parser) for detail.
+
+If you don't use TypeScript 4.1, no additional configuration is required.
 
 ##### Key Remapping In Mapped Types