support static property on ClassMethods - fixes #28

lib/6to5/templates/class-static-method.js

@@ -0,0 +1 @@
+CLASS_NAME.METHOD_NAME = FUNCTION;

lib/6to5/transformers/classes.js

@@ -63,7 +63,8 @@ var buildClass = function (node, generateUid) {
 };
 
 var buildClassBody = function (body, className, superName, node) {
-  var mutatorMap = {};
+  var instanceMutatorMap = {};
+  var staticMutatorMap = {};
 
   var classBody = node.body.body;
   _.each(classBody, function (node) {
@@ -79,20 +80,32 @@ var buildClassBody = function (body, className, superName, node) {
         throw util.errorWithNode(node, "unknown kind for constructor method");
       }
     } else {
+      var add = addInstanceMethod;
+      var mutatorMap = instanceMutatorMap;
+
+      if (node.static) {
+        add = addStaticMethod;
+        mutatorMap = staticMutatorMap
+      }
+
       if (node.kind === "") {
-        addInstanceMethod(body, className, methodName, method);
+        add(body, className, methodName, method);
       } else {
         util.pushMutatorMap(mutatorMap, methodName, node.kind, node);
       }
     }
   });
 
-  if (!_.isEmpty(mutatorMap)) {
+  if (!_.isEmpty(instanceMutatorMap)) {
     var protoId = util.template("prototype-identifier", {
       CLASS_NAME: className
     });
 
-    body.push(util.buildDefineProperties(mutatorMap, protoId));
+    body.push(util.buildDefineProperties(instanceMutatorMap, protoId));
+  }
+
+  if (!_.isEmpty(staticMutatorMap)) {
+    body.push(util.buildDefineProperties(staticMutatorMap, className));
   }
 };
 
@@ -148,6 +161,14 @@ var addConstructor = function (construct, method) {
   construct.rest     = method.rest;
 };
 
+var addStaticMethod = function (body, className, methodName, method) {
+  body.push(util.template("class-static-method", {
+    METHOD_NAME: methodName,
+    CLASS_NAME: className,
+    FUNCTION: method
+  }, true));
+};
+
 var addInstanceMethod = function (body, className, methodName, method) {
   body.push(util.template("class-method", {
     METHOD_NAME: methodName,

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into vanilla ES5 with source maps and no runtime",
-  "version": "1.7.2",
+  "version": "1.7.3",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://github.com/sebmck/6to5",
   "repository": {

test/fixtures/classes/static/actual.js

@@ -0,0 +1,13 @@
+class A {
+  static a() {
+
+  }
+
+  static get b(){
+
+  }
+
+  static set b(b){
+
+  }
+}

test/fixtures/classes/static/expected.js

@@ -0,0 +1,14 @@
+var A = function() {
+  function A() {}
+
+  A.a = function() {};
+
+  Object.defineProperties(A, {
+    b: {
+      get: function() {},
+      set: function(b) {}
+    }
+  });
+
+  return A;
+}();