patch native components #

Author: mpantel

ruby/hyper-component/lib/hyperstack/internal/component/react_wrapper.rb

@@ -27,16 +27,18 @@ def self.import_native_component(opal_class, native_class)
           @@component_classes[opal_class] = native_class
         end
 
+        # patched
+        # https://github.com/hyperstack-org/hyperstack/issues/305
         def self.eval_native_react_component(name)
           component = `eval(name)`
           raise "#{name} is not defined" if `#{component} === undefined`
-
-          component = `component.default` if `component.__esModule`
+          component = `component.default` if `component.__esModule && component.default`
           is_component_class = `#{component}.prototype !== undefined` &&
-                                (`!!#{component}.prototype.isReactComponent` ||
-                                 `!!#{component}.prototype.render`)
+            (`!!#{component}.prototype.isReactComponent` ||
+              `!!#{component}.prototype.render`)
+          is_memo = `#{component}.type != undefined` && `typeof #{component}.type.render === "function"`
           has_render_method = `typeof #{component}.render === "function"`
-          unless is_component_class || stateless?(component) || has_render_method
+          unless is_component_class || stateless?(component) || has_render_method || is_memo
             raise 'does not appear to be a native react component'
           end
           component