Add tests with espree v9 (#1622)

Author: ota-meshi

docs/user-guide/README.md

@@ -265,9 +265,10 @@ See also: "[How to use a custom parser?](#how-to-use-a-custom-parser)" section.
     ]
   ```
 
-2. Make sure your tool is set to lint `.vue` files.
-  - CLI targets only `.js` files by default. You have to specify additional extensions with the `--ext` option or glob patterns. E.g. `eslint "src/**/*.{js,vue}"` or `eslint src --ext .vue`. If you use `@vue/cli-plugin-eslint` and the `vue-cli-service lint` command - you don't have to worry about it.
-  - If you are having issues with configuring editor, please read [editor integrations](#editor-integrations)
+1. Make sure your tool is set to lint `.vue` files.
+
+    - CLI targets only `.js` files by default. You have to specify additional extensions with the `--ext` option or glob patterns. E.g. `eslint "src/**/*.{js,vue}"` or `eslint src --ext .vue`. If you use `@vue/cli-plugin-eslint` and the `vue-cli-service lint` command - you don't have to worry about it.
+    - If you are having issues with configuring editor, please read [editor integrations](#editor-integrations)
 
 ### Conflict with [Prettier]
 
@@ -384,8 +385,8 @@ See also [ESLint - Specifying Globals > Using configuration files](https://eslin
 ##### Using ESLint <= v7.x
 
 The parser `espree` that comes with `ESLint` v7.x doesn't understand the syntax of ES2022, so it can't parse the Top Level `await` either.  
-However, `espree` v8+ can understand the syntax of ES2022 and parse the Top Level `await`.  
-You install `espree` v8+ and specify `"espree"` and ES2022 in your configuration, the parser will be able to parse it.
+However, `espree` >= v8 can understand the syntax of ES2022 and parse the Top Level `await`.  
+You install `espree` >= v8 and specify `"espree"` and ES2022 in your configuration, the parser will be able to parse it.
 
 ```js
 module.exports = {

package.json

@@ -66,6 +66,7 @@
     "@types/semver": "^7.2.0",
     "@typescript-eslint/parser": "^5.0.0-0",
     "@vuepress/plugin-pwa": "^1.4.1",
+    "acorn": "^8.5.0",
     "env-cmd": "^10.1.0",
     "eslint": "^7.0.0",
     "eslint-config-prettier": "^6.11.0",
@@ -74,7 +75,7 @@
     "eslint-plugin-prettier": "^3.1.3",
     "eslint-plugin-vue": "file:.",
     "eslint4b": "^7.0.0",
-    "espree": "^8.0.0",
+    "espree": "^9.0.0",
     "lodash": "^4.17.15",
     "mocha": "^7.1.2",
     "nyc": "^15.0.1",

tests/fixtures/script-indent/static-block-01.vue

@@ -0,0 +1,8 @@
+<!--{}-->
+<script>
+class Foo {
+  static {
+    processFn()
+  }
+}
+</script>