Align decorators to 2021-12 spec (#273)

* align decorators to latest spec

* add ClassBody changes

experimental/decorators.md

@@ -1,4 +1,4 @@
-# [Decorators](https://github.com/wycats/javascript-decorators)
+# [Decorators](https://github.com/tc39/proposal-decorators)
 
 ## Decorator
 
@@ -9,18 +9,44 @@ interface Decorator <: Node {
 }
 ```
 
-## Used
+## AccessorProperty
+```js
+interface AccessorProperty <: Node {
+    type: "AccessorProperty";
+    key: Expression | PrivateIdentifier;
+    value: Expression | null;
+    computed: boolean;
+    static: boolean;
+    decorators: [ Decorator ];
+}
+```
 
+## Class
 ```js
-extend interface MethodDefinition {
+extend interface Class {
     decorators: [ Decorator ];
 }
+```
+
+## ClassBody
+
+```js
+extend interface ClassBody {
+    body: [ MethodDefinition | PropertyDefinition | StaticBlock | AccessorProperty ];
+}
+```
 
-extend interface Property {
+## MethodDefinition
+```js
+extend interface MethodDefinition {
     decorators: [ Decorator ];
 }
+```
 
-extend interface Class {
+## PropertyDefinition
+
+```js
+extend interface PropertyDefinition {
     decorators: [ Decorator ];
 }
 ```