add test for button-has-type

Author: y-hsgw

lib/rules/button-has-type.js

@@ -157,7 +157,7 @@ module.exports = {
           (prop) => prop.type === 'Property' && prop.key && prop.key.type === 'Identifier' && prop.key.name === 'type'
         );
 
-        if (typeProp.type !== 'Property') {
+        if (!typeProp || typeProp.type !== 'Property') {
           reportMissing(node);
           return;
         }

tests/lib/rules/button-has-type.js

@@ -304,6 +304,14 @@ ruleTester.run('button-has-type', rule, {
         },
       ],
     },
+    {
+      code: 'React.createElement("button", {...extraProps})',
+      errors: [
+        {
+          messageId: 'missingType',
+        },
+      ],
+    },
     {
       code: 'Foo.createElement("button")',
       errors: [