fix: interfaces and classes (#409)

* fix: check only object types

* docs: generate docs

Author: goodmind

README.md

@@ -2203,6 +2203,10 @@ The following patterns are not considered problems:
 ```js
 type foo = { foo: string, ... };
 
+interface Foo { foo: string }
+
+declare class Foo { foo: string }
+
 type foo = {| |};
 
 type foo = {| bar: string |};

src/rules/requireInexactType.js

@@ -12,6 +12,10 @@ const create = (context) => {
     ObjectTypeAnnotation (node) {
       const {inexact, exact} = node;
 
+      if (!node.hasOwnProperty('inexact')) {
+        return;
+      }
+
       if (always && !inexact && !exact) {
         context.report({
           message: 'Type must be explicit inexact.',

tests/rules/assertions/requireInexactType.js

@@ -65,6 +65,12 @@ export default {
     {
       code: 'type foo = { foo: string, ... };'
     },
+    {
+      code: 'interface Foo { foo: string }'
+    },
+    {
+      code: 'declare class Foo { foo: string }'
+    },
     {
       code: 'type foo = {| |};'
     },