Eslint fixes

.eslintrc

@@ -10,11 +10,13 @@ rules:
   no-path-concat: 0
   no-undef: 2
   no-underscore-dangle: 0
+  no-unused-vars: 1
   no-use-before-define: 0
   quotes: [2, "single", "avoid-escape"]
   strict: 0
   react/react-in-jsx-scope: 1
   react/jsx-no-undef: 1
+  react/jsx-uses-react: 1
   import/no-unresolved: [2, {commonjs: true, amd: true}]
   import/named: 2
   import/default: 2

src/ASTOutput.js

@@ -1,4 +1,3 @@
-import PubSub from 'pubsub-js';
 import React from 'react';
 import cx from 'classnames';
 import visualizations from './components/visualization';

src/Editor.js

@@ -1,7 +1,6 @@
 import CodeMirror from 'codemirror';
 import PubSub from 'pubsub-js';
 import React from 'react';
-import {keypress} from 'keypress';
 
 export default class Editor extends React.Component {
   static propTypes = {

src/ParserSettingsButton.js

@@ -1,5 +1,4 @@
 import React from 'react';
-import * as parsers from './parsers';
 import pubSub from 'pubsub-js';
 
 export default class ParserSettingsButton extends React.Component {

src/app.js

@@ -489,12 +489,7 @@ class App extends React.Component {
   }
 
   render() {
-    const {
-      revision,
-      showTransformPanel,
-      currentTransformCode,
-      initialTransformCode,
-    } = this.state;
+    const {showTransformPanel} = this.state;
 
     return (
       <PasteDropTarget
@@ -515,11 +510,11 @@ class App extends React.Component {
           onParserChange={this._onParserChange}
           onTransformChange={this.onTransformChange}
           canSave={this._canSave()}
-          canFork={!!revision}
+          canFork={!!this.state.revision}
           category={this.state.parser.category}
           parser={this.state.parser}
           transformer={this.state.transformer}
-          transformPanelIsEnabled={this.state.showTransformPanel}
+          transformPanelIsEnabled={showTransformPanel}
         />
         {this.state.error ? <ErrorMessage message={this.state.error} /> : null}
         <SplitPane
@@ -544,7 +539,7 @@ class App extends React.Component {
               parser={this.state.parser}
             />
           </SplitPane>
-          {this.state.showTransformPanel ? <SplitPane
+          {showTransformPanel ? <SplitPane
             className="splitpane"
             onResize={this._onResize}>
             <Editor

src/components/ast/RecursiveTreeElement.js

@@ -1,6 +1,6 @@
 import React from 'react';
 
-function shouldAutoFocus({deepOpen, value, settings, focusPath}) {
+function shouldAutoFocus({value, settings, focusPath}) {
   return !!settings.autofocus && focusPath.indexOf(value) > -1;
 }
 

src/parsers/utils/defaultParserInterface.js

@@ -1,7 +1,7 @@
 export default {
   _ignoredProperties: new Set(),
 
-  opensByDefault(node, key) {
+  opensByDefault(/*node, key*/) {
     return false;
   },