Port to node 0.10

.eslintrc

@@ -1,6 +1,5 @@
 {
     "env": {
-        "es6": true,
         "node": true
     },
     ecmaFeatures: {

lib/rules/no-unused-state.js

@@ -59,57 +59,57 @@ module.exports = {
     // not yet encountered any use of this.state which we have chosen not to
     // analyze. If we encounter any such usage (like this.state being spread as
     // JSX attributes), then this is again set to null.
-    let classInfo = null;
+    var classInfo = null;
 
     // Returns true if the given node is possibly a reference to `this.state`.
     function isStateReference(node) {
       node = uncast(node);
 
-      const isDirectStateReference =
+      var isDirectStateReference =
         node.type === 'MemberExpression' &&
         isThisExpression(node.object) &&
         node.property.name === 'state';
 
-      const isAliasedStateReference =
+      var isAliasedStateReference =
         node.type === 'Identifier' &&
         classInfo.aliases &&
-        classInfo.aliases.has(node.name);
+        classInfo.aliases.indexOf(node.name) >= 0;
 
       return isDirectStateReference || isAliasedStateReference;
     }
 
     // Takes an ObjectExpression node and adds all named Property nodes to the
     // current set of state fields.
     function addStateFields(node) {
-      for (let prop of node.properties) {
+      node.properties.forEach(function(prop) {
         if (prop.type === 'Property' && getName(prop.key) !== null) {
-          classInfo.stateFields.add(prop);
+          classInfo.stateFields.push(prop);
         }
-      }
+      });
     }
 
     // Adds the name of the given node as a used state field if the node is an
     // Identifier or a Literal. Other node types are ignored.
     function addUsedStateField(node) {
-      let name = getName(node);
+      var name = getName(node);
       if (name) {
-        classInfo.usedStateFields.add(name);
+        classInfo.usedStateFields.push(name);
       }
     }
 
     // Records used state fields and new aliases for an ObjectPattern which
     // destructures `this.state`.
     function handleStateDestructuring(node) {
-      for (let prop of node.properties) {
+      node.properties.forEach(function(prop) {
         if (prop.type === 'Property') {
           addUsedStateField(prop.key);
         } else if (
           prop.type === 'ExperimentalRestProperty' &&
           classInfo.aliases
         ) {
-          classInfo.aliases.add(getName(prop.argument));
+          classInfo.aliases.push(getName(prop.argument));
         }
-      }
+      });
     }
 
     // Used to record used state fields and new aliases for both
@@ -118,23 +118,23 @@ module.exports = {
       switch (left.type) {
         case 'Identifier':
           if (isStateReference(right) && classInfo.aliases) {
-            classInfo.aliases.add(left.name);
+            classInfo.aliases.push(left.name);
           }
           break;
         case 'ObjectPattern':
           if (isStateReference(right)) {
             handleStateDestructuring(left);
           } else if (isThisExpression(right) && classInfo.aliases) {
-            for (let prop of left.properties) {
+            left.properties.forEach(function(prop) {
               if (prop.type === 'Property' && getName(prop.key) === 'state') {
-                let name = getName(prop.value);
+                var name = getName(prop.value);
                 if (name) {
-                  classInfo.aliases.add(name);
+                  classInfo.aliases.push(name);
                 } else if (prop.value.type === 'ObjectPattern') {
                   handleStateDestructuring(prop.value);
                 }
               }
-            }
+            });
           }
           break;
         default:
@@ -143,19 +143,19 @@ module.exports = {
     }
 
     return {
-      ClassDeclaration(node) {
+      ClassDeclaration: function(node) {
         // Simple heuristic for determining whether we're in a React component.
-        const isReactComponent = node.body.body.some(
-          child => isMethodDefinitionWithName(child, 'render')
-        );
+        var isReactComponent = node.body.body.some(function(child) {
+          return isMethodDefinitionWithName(child, 'render');
+        });
 
         if (isReactComponent) {
           classInfo = {
             // Set of nodes where state fields were defined.
-            stateFields: new Set(),
+            stateFields: [],
 
             // Set of names of state fields that we've seen used.
-            usedStateFields: new Set(),
+            usedStateFields: [],
 
             // Names of local variables that may be pointing to this.state. To
             // track this properly, we would need to keep track of all locals,
@@ -167,21 +167,21 @@ module.exports = {
         }
       },
 
-      'ClassDeclaration:exit'() {
+      'ClassDeclaration:exit': function() {
         if (!classInfo) {
           return;
         }
         // Report all unused state fields.
-        for (let node of classInfo.stateFields) {
-          let name = getName(node.key);
-          if (!classInfo.usedStateFields.has(name)) {
-            context.report(node, `Unused state field: '${name}'`);
+        classInfo.stateFields.forEach(function(node) {
+          var name = getName(node.key);
+          if (classInfo.usedStateFields.indexOf(name) < 0) {
+            context.report(node, 'Unused state field: \'' + name + '\'');
           }
-        }
+        });
         classInfo = null;
       },
 
-      CallExpression(node) {
+      CallExpression: function(node) {
         if (!classInfo) {
           return;
         }
@@ -198,7 +198,7 @@ module.exports = {
         }
       },
 
-      ClassProperty(node) {
+      ClassProperty: function(node) {
         if (!classInfo) {
           return;
         }
@@ -214,23 +214,23 @@ module.exports = {
         }
       },
 
-      MethodDefinition() {
+      MethodDefinition: function() {
         if (!classInfo) {
           return;
         }
         // Create a new set for this.state aliases local to this method.
-        classInfo.aliases = new Set();
+        classInfo.aliases = [];
       },
 
-      'MethodDefinition:exit'() {
+      'MethodDefinition:exit': function() {
         if (!classInfo) {
           return;
         }
         // Forget our set of local aliases.
         classInfo.aliases = null;
       },
 
-      AssignmentExpression(node) {
+      AssignmentExpression: function(node) {
         if (!classInfo) {
           return;
         }
@@ -242,7 +242,7 @@ module.exports = {
           node.right.type === 'ObjectExpression'
         ) {
           // Find the nearest function expression containing this assignment.
-          let fn = node;
+          var fn = node;
           while (fn.type !== 'FunctionExpression' && fn.parent) {
             fn = fn.parent;
           }
@@ -261,14 +261,14 @@ module.exports = {
         }
       },
 
-      VariableDeclarator(node) {
+      VariableDeclarator: function(node) {
         if (!classInfo || !node.init) {
           return;
         }
         handleAssignment(node.id, node.init);
       },
 
-      MemberExpression(node) {
+      MemberExpression: function(node) {
         if (!classInfo) {
           return;
         }
@@ -283,13 +283,13 @@ module.exports = {
         }
       },
 
-      JSXSpreadAttribute(node) {
+      JSXSpreadAttribute: function(node) {
         if (classInfo && isStateReference(node.argument)) {
           classInfo = null;
         }
       },
 
-      ExperimentalSpreadProperty(node) {
+      ExperimentalSpreadProperty: function(node) {
         if (classInfo && isStateReference(node.argument)) {
           classInfo = null;
         }