added support for static methods

Author: Keyan Zhang

transforms/__testfixtures__/class-test2.input.js

@@ -8,6 +8,9 @@ var ComponentWithNonSimpleInitialState = React.createClass({
   statics: {
     iDontKnowWhyYouNeedThis: true, // but comment it
     foo: 'bar',
+    dontBindMe: function(count: number): any {
+      return this;
+    },
   },
 
   getInitialState: function() {

transforms/__testfixtures__/class-test2.output.js

@@ -8,6 +8,10 @@ class ComponentWithNonSimpleInitialState extends React.Component {
   static iDontKnowWhyYouNeedThis = true; // but comment it
   static foo = 'bar';
 
+  static dontBindMe(count: number): any {
+    return this;
+  }
+
   constructor(props) {
     super(props);
 

transforms/__testfixtures__/class.output.js

@@ -35,7 +35,7 @@ class MyComponent2 extends React.Component {
 
 class MyComponent3 extends React.Component {
   static someThing = 10;
-  static funcThatDoesNothing = function(): void {};
+  static funcThatDoesNothing(): void {}
 
   static propTypes = {
     highlightEntities: React.PropTypes.bool,

transforms/class.js

@@ -432,13 +432,23 @@ module.exports = (file, api, options) => {
     ), {comments});
   };
 
-  const createStaticClassProperty = staticProperty =>
-    withComments(j.classProperty(
+  const createStaticClassProperty = staticProperty => {
+    if (staticProperty.value.type === 'FunctionExpression') {
+      return withComments(j.methodDefinition(
+        'method',
+        j.identifier(staticProperty.key.name),
+        staticProperty.value,
+        true
+      ), staticProperty);
+    }
+
+    return withComments(j.classProperty(
       j.identifier(staticProperty.key.name),
       staticProperty.value,
       null,
       true
     ), staticProperty);
+  };
 
   const createStaticClassProperties = statics =>
     statics.map(createStaticClassProperty);