Add 2.2 blog post

changelog_unreleased/blog-post-intro.md

@@ -1,7 +1,7 @@
 ---
-author: "🚧"
-authorURL: "https://github.com/🚧"
-title: "Prettier 🚧"
+author: "Sosuke Suzuki (@sosukesuzuki)"
+authorURL: "https://github.com/sosukesuzuki"
+title: "Prettier 2.2: new JavaScript parsers, TS 4.1 and ESM standalone bundles"
 ---
 
-🚧 Write an introduction here.
+This release supports new JavaScript parsers [espree](https://github.com/eslint/espree) and [meriyah](https://github.com/meriyah/meriyah), supports [TypeScript 4.1](https://devblogs.microsoft.com/typescript/announcing-typescript-4-1-rc/), ships ESM standalone bundles for modern browsers, and includes many bug fixes and improvements!

changelog_unreleased/cli/pr-8937.md

@@ -0,0 +1,12 @@
+#### Move [pre-commit](https://github.com/pre-commit/pre-commit) support to github.com/prettier/pre-commit ([#8937](https://github.com/prettier/prettier/pull/8937) by [@FloChehab](https://github.com/FloChehab))
+
+`pre-commit` support has moved to the new repository https://github.com/prettier/pre-commit, please update your `.pre-commit-config.yaml` file .
+
+```diff
+- - repo: https://github.com/prettier/prettier
++ - repo: https://github.com/prettier/pre-commit
+-   rev: "2.2.0"
++   rev: "v2.2.0"
+    hooks:
+     - id: prettier
+```

changelog_unreleased/typescript/pr-9473.md

@@ -1,8 +1,28 @@
 #### [HIGHLIGHT]Support TypeScript 4.1 via Babel (#9473 by @sosukesuzuki)
 
-`--parser=babel-ts` is required.
+If you want to format [TypeScript 4.1](https://devblogs.microsoft.com/typescript/announcing-typescript-4-1-rc/) features, please update your configuration file to use the `babel-ts` parser as below:
+
+```diff
+// .prettierrc
+{
++  "overrides": [
++    {
++      "files": "*.ts",
++      "options": {
++        "parser": "babel-ts"
++      }
++    }
++  ]
+}
+```
+
+The overrides configuration should be kept until the default `typescript` parser supports TypeScript 4.1 features. Probably it can be removed when 2.3 is released.
+
+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
+##### [Key Remapping In Mapped Types](https://devblogs.microsoft.com/typescript/announcing-typescript-4-1-rc/#key-remapping-in-mapped-types)
 
 ```ts
 // Input
@@ -23,7 +43,7 @@ type MappedTypeWithNewKeys<T> = {
 };
 ```
 
-##### Template Literal Types
+##### [Template Literal Types](https://devblogs.microsoft.com/typescript/announcing-typescript-4-1-rc/#template-literal-types)
 
 ```ts
 // Input