Add ESLint support

See https://github.com/silverstripe/silverstripe-framework/pull/5108

.editorconfig

@@ -17,6 +17,10 @@ trim_trailing_whitespace = false
 indent_size = 2
 indent_style = space
 
+[*.js]
+indent_size = 2
+indent_style = space
+
 # Don't perform any clean-up on thirdparty files
 
 [thirdparty/**]

.eslintignore

@@ -0,0 +1,37 @@
+# Ignore dist files
+javascript/dist/
+
+# Ignore legacy files
+javascript/src/AssetUploadField.js
+javascript/src/ConfirmedPasswordField.js
+javascript/src/DateField.js
+javascript/src/GridField.js
+javascript/src/HtmlEditorField.js
+javascript/src/InlineFormAction.js
+javascript/src/PermissionCheckboxSetField.js
+javascript/src/SelectionGroup.js
+javascript/src/TabSet.js
+javascript/src/TinyMCE_SSPlugin.js
+javascript/src/ToggleCompositeField.js
+javascript/src/ToggleField.js
+javascript/src/TreeDropdownField.js
+javascript/src/UploadField.js
+javascript/src/UploadField_downloadtemplate.js
+javascript/src/UploadField_select.js
+javascript/src/UploadField_uploadtemplate.js
+javascript/src/i18n.js
+javascript/src/i18nx.js
+javascript/src/jQuery.js
+admin/javascript/src/LeftAndMain.js
+admin/javascript/src/LeftAndMain.*.js
+admin/javascript/src/CMSSecurity.js
+admin/javascript/src/MemberDatetimeOptionsetField.js
+admin/javascript/src/MemberImportForm.js
+admin/javascript/src/ModelAdmin.js
+admin/javascript/src/SecurityAdmin.js
+admin/javascript/src/leaktools.js
+admin/javascript/src/sspath.js
+admin/javascript/src/ssui.core.js
+
+# Ignore tests
+admin/javascript/**/tests/

.eslintrc

@@ -0,0 +1,3 @@
+{
+  "extends": "airbnb"
+}

admin/javascript/src/boot/index.js

@@ -10,6 +10,7 @@ import SchemaReducer from 'state/schema/reducer';
 import RecordsReducer from 'state/records/reducer';
 
 // Sections
+// eslint-disable-next-line no-unused-vars
 import CampaignAdmin from 'sections/campaign-admin/index';
 
 function appBoot() {
@@ -28,6 +29,8 @@ function appBoot() {
   configActions.setConfig(window.ss.config)(window.store.dispatch);
 }
 
-// TODO: This should be using `window.onload` but isn't because Entwine hooks are being used to set up the <Provider>.
+// TODO: This should be using `window.onload` but isn't because
-// `window.onload` happens AFTER these Entwine hooks which means the store is undefined when the <Provider> is constructed.
+// Entwine hooks are being used to set up the <Provider>.
-$('body').entwine({ onadd: function () { appBoot(); } });
+// `window.onload` happens AFTER these Entwine hooks which means
+// the store is undefined when the <Provider> is constructed.
+$('body').entwine({ onadd: () => { appBoot(); } });

admin/javascript/src/components/form-action/index.js

@@ -23,7 +23,7 @@ class FormActionComponent extends SilverStripeComponent {
    * @returns string
    */
   getButtonClasses() {
-        var buttonClasses = 'btn';
+    let buttonClasses = 'btn';
 
     // Add 'type' class
     buttonClasses += ` btn-${this.props.style}`;
@@ -91,12 +91,12 @@ FormActionComponent.propTypes = {
   loading: React.PropTypes.bool,
   icon: React.PropTypes.string,
   disabled: React.PropTypes.bool,
-    style: React.PropTypes.string
+  style: React.PropTypes.string,
 };
 
 FormActionComponent.defaultProps = {
   type: 'button',
-    style: 'secondary'
+  style: 'secondary',
 };
 
 export default FormActionComponent;

admin/javascript/src/components/form-builder/index.js

@@ -1,7 +1,6 @@
 import React from 'react';
 import { connect } from 'react-redux';
 import { bindActionCreators } from 'redux';
-import $ from 'jQuery';
 import * as schemaActions from 'state/schema/actions';
 import SilverStripeComponent from 'silverstripe-component';
 import FormComponent from 'components/form/index';
@@ -14,15 +13,15 @@ import es6promise from 'es6-promise';
 es6promise.polyfill();
 
 // Using this to map field types to components until we implement dependency injection.
-var fakeInjector = {
+const fakeInjector = {
 
   /**
    * Components registered with the fake DI container.
    */
   components: {
-        'TextField': TextField,
+    TextField,
-        'GridField': GridField,
+    GridField,
-        'HiddenField': HiddenField
+    HiddenField,
   },
 
   /**
@@ -33,7 +32,7 @@ var fakeInjector = {
    *
    * @return object|null
    */
-    getComponentByName: function (componentName) {
+  getComponentByName(componentName) {
     return this.components[componentName];
   },
 
@@ -45,7 +44,7 @@ var fakeInjector = {
    *
    * @return object|null
    */
-    getComponentByDataType: function (dataType) {
+  getComponentByDataType(dataType) {
     switch (dataType) {
       case 'String':
         return this.components.TextField;
@@ -86,8 +85,8 @@ var fakeInjector = {
       default:
         return null;
     }
-    }
+  },
-}
+};
 
 export class FormBuilderComponent extends SilverStripeComponent {
 
@@ -110,7 +109,7 @@ export class FormBuilderComponent extends SilverStripeComponent {
    * @return object - Promise from the AJAX request.
    */
   fetch(schema = true, state = false) {
-        var headerValues = [];
+    const headerValues = [];
 
     if (this.isFetching === true) {
       return this.formSchemaPromise;
@@ -126,11 +125,9 @@ export class FormBuilderComponent extends SilverStripeComponent {
 
     this.formSchemaPromise = fetch(this.props.schemaUrl, {
       headers: { 'X-FormSchema-Request': headerValues.join() },
-            credentials: 'same-origin'
+      credentials: 'same-origin',
-        })
-            .then(response => {
-                return response.json();
     })
+      .then(response => response.json())
       .then(json => {
         this.isFetching = false;
         this.props.actions.setSchema(json);
@@ -152,7 +149,6 @@ export class FormBuilderComponent extends SilverStripeComponent {
    */
   mapFieldsToComponents(fields) {
     return fields.map((field, i) => {
-
       const Component = field.component !== null
         ? fakeInjector.getComponentByName(field.component)
         : fakeInjector.getComponentByDataType(field.type);
@@ -162,17 +158,18 @@ export class FormBuilderComponent extends SilverStripeComponent {
       }
 
       // Props which every form field receives.
-            let props = {
+      const props = {
         attributes: field.attributes,
         data: field.data,
         description: field.description,
         extraClass: field.extraClass,
         fields: field.children,
         id: field.id,
-                name: field.name
+        name: field.name,
       };
 
-            // Structural fields (like TabSets) are not posted back to the server and don't receive some props.
+      // Structural fields (like TabSets) are not posted back to
+      // the server and don't receive some props.
       if (field.type !== 'Structural') {
         props.rightTitle = field.rightTitle;
         props.leftTitle = field.leftTitle;
@@ -186,7 +183,7 @@ export class FormBuilderComponent extends SilverStripeComponent {
         props.source = field.source;
       }
 
-            return <Component key={i} {...props} />
+      return <Component key={i} {...props} />;
     });
   }
 
@@ -204,29 +201,29 @@ export class FormBuilderComponent extends SilverStripeComponent {
       attributes: schema.schema.attributes,
       data: schema.schema.data,
       fields: schema.schema.fields,
-            mapFieldsToComponents: this.mapFieldsToComponents
+      mapFieldsToComponents: this.mapFieldsToComponents,
     };
 
-        return <FormComponent {...formProps} />
+    return <FormComponent {...formProps} />;
   }
 }
 
 FormBuilderComponent.propTypes = {
   actions: React.PropTypes.object.isRequired,
   schemaUrl: React.PropTypes.string.isRequired,
-    schemas: React.PropTypes.object.isRequired
+  schemas: React.PropTypes.object.isRequired,
 };
 
 function mapStateToProps(state) {
   return {
-        schemas: state.schemas
+    schemas: state.schemas,
-    }
+  };
 }
 
 function mapDispatchToProps(dispatch) {
   return {
-        actions: bindActionCreators(schemaActions, dispatch)
+    actions: bindActionCreators(schemaActions, dispatch),
-    }
+  };
 }
 
 export default connect(mapStateToProps, mapDispatchToProps)(FormBuilderComponent);

admin/javascript/src/components/form/index.js

@@ -11,9 +11,9 @@ class FormComponent extends SilverStripeComponent {
    * @return array|null
    */
   getFormActionComponents() {
-        return this.props.actions.map((action) => {
+    return this.props.actions.map((action) =>
-            return <FormActionComponent {...action} />;
+      <FormActionComponent {...action} />
-        });
+    );
   }
 
   render() {
@@ -22,16 +22,22 @@ class FormComponent extends SilverStripeComponent {
     const actions = this.getFormActionComponents();
 
     return (
-            <form id={attr.id} className={attr.className} encType={attr.enctype} method={attr.method} action={attr.action}>
+      <form
+        id={attr.id}
+        className={attr.className}
+        encType={attr.enctype}
+        method={attr.method}
+        action={attr.action}
+      >
         {fields &&
-                    <fieldset className='form-group'>
+          <fieldset className="form-group">
             {fields}
           </fieldset>
         }
 
         {actions &&
-                    <div className='actions-fix-btm'>
+          <div className="actions-fix-btm">
-                        <div className='btn-group' role='group'>
+            <div className="btn-group" role="group">
               {actions}
             </div>
           </div>
@@ -46,14 +52,14 @@ FormComponent.propTypes = {
   actions: React.PropTypes.array,
   attributes: React.PropTypes.shape({
     action: React.PropTypes.string.isRequired,
-        'class': React.PropTypes.string.isRequired,
+    class: React.PropTypes.string.isRequired,
     enctype: React.PropTypes.string.isRequired,
     id: React.PropTypes.string.isRequired,
-        method: React.PropTypes.string.isRequired
+    method: React.PropTypes.string.isRequired,
   }),
   data: React.PropTypes.array,
   fields: React.PropTypes.array.isRequired,
-    mapFieldsToComponents: React.PropTypes.func.isRequired
+  mapFieldsToComponents: React.PropTypes.func.isRequired,
 };
 
 export default FormComponent;

admin/javascript/src/components/grid-field/action.js

@@ -4,7 +4,6 @@ import SilverStripeComponent from 'silverstripe-component';
 class GridFieldActionComponent extends SilverStripeComponent {
   constructor(props) {
     super(props);
-        
     this.handleClick = this.handleClick.bind(this);
   }
 
@@ -12,17 +11,18 @@ class GridFieldActionComponent extends SilverStripeComponent {
     return (
       <button
         className={`grid-field-action-component font-icon-${this.props.icon}`}
-                onClick={this.handleClick} />
+        onClick={this.handleClick}
+      />
     );
   }
 
   handleClick(event) {
-        this.props.handleClick(event);
+    this.props.handleClick(event, this.props.record.ID);
   }
 }
 
 GridFieldActionComponent.PropTypes = {
-    handleClick: React.PropTypes.func.isRequired
+  handleClick: React.PropTypes.func.isRequired,
-}
+};
 
 export default GridFieldActionComponent;

admin/javascript/src/components/grid-field/cell.js

@@ -5,14 +5,14 @@ class GridFieldCellComponent extends SilverStripeComponent {
 
   render() {
     return (
-            <div className='grid-field-cell-component'>{this.props.children}</div>
+      <div className="grid-field-cell-component">{this.props.children}</div>
     );
   }
 
 }
 
 GridFieldCellComponent.PropTypes = {
-    width: React.PropTypes.number
+  width: React.PropTypes.number,
-}
+};
 
 export default GridFieldCellComponent;

admin/javascript/src/components/grid-field/header-cell.js

@@ -5,14 +5,14 @@ class GridFieldHeaderCellComponent extends SilverStripeComponent {
 
   render() {
     return (
-            <div className='grid-field-header-cell-component'>{this.props.children}</div>
+      <div className="grid-field-header-cell-component">{this.props.children}</div>
     );
   }
 
 }
 
 GridFieldHeaderCellComponent.PropTypes = {
-    width: React.PropTypes.number
+  width: React.PropTypes.number,
-}
+};
 
 export default GridFieldHeaderCellComponent;

admin/javascript/src/components/grid-field/index.js

@@ -14,7 +14,8 @@ import * as actions from 'state/records/actions';
  * The component acts as a container for a grid field,
  * with smarts around data retrieval from external sources.
  *
- * @todo Convert to higher order component which hooks up form schema data to an API backend as a grid data source
+ * @todo Convert to higher order component which hooks up form
+ * schema data to an API backend as a grid data source
  * @todo Replace "dumb" inner components with third party library (e.g. https://griddlegriddle.github.io)
  */
 class GridField extends SilverStripeComponent {
@@ -29,49 +30,59 @@ class GridField extends SilverStripeComponent {
   componentDidMount() {
     super.componentDidMount();
 
-        let data = this.props.data;
+    const data = this.props.data;
 
-        this.props.actions.fetchRecords(data.recordType, data.collectionReadEndpoint.method, data.collectionReadEndpoint.url);
+    this.props.actions.fetchRecords(
+      data.recordType,
+      data.collectionReadEndpoint.method,
+      data.collectionReadEndpoint.url
+    );
   }
 
   render() {
     const records = this.props.records;
-        if(!records) {
+    if (!records) {
       return <div></div>;
     }
 
     const columns = this.props.data.columns;
 
     // Placeholder to align the headers correctly with the content
-        const actionPlaceholder = <GridFieldCell key={'actionPlaceholder'} />;
+    const actionPlaceholder = <span key={'actionPlaceholder'} />;
-        const headerCells = columns.map((column, i) => <GridFieldHeaderCell key={i} >{column.name}</GridFieldHeaderCell>);
+    const headerCells = columns.map((column, i) =>
+      <GridFieldHeaderCell key={i}>{column.name}</GridFieldHeaderCell>
+    );
     const header = <GridFieldHeader>{headerCells.concat(actionPlaceholder)}</GridFieldHeader>;
 
     const rows = records.map((record, i) => {
-            var cells = columns.map((column, i) => {
+      const cells = columns.map((column, j) => {
         // Get value by dot notation
-                var val = column.field.split('.').reduce((a, b) => a[b], record)
+        const val = column.field.split('.').reduce((a, b) => a[b], record);
-                return <GridFieldCell key={i}>{val}</GridFieldCell>
+        return <GridFieldCell key={j} width={column.width}>{val}</GridFieldCell>;
       });
 
-            var rowActions = <GridFieldCell key={i + '-actions'}>
+      const rowActions = (
+        <GridFieldCell key={`${i}-actions`}>
           <GridFieldAction
             icon={'cog'}
-                    handleClick={this.editRecord.bind(this, record.ID)}
+            handleClick={this.editRecord}
-                    key={"action-" + i + "-edit"}
+            key={`action-${i}-edit`}
-                />
+            record={record}
+          />,
           <GridFieldAction
             icon={'cancel'}
-                    handleClick={this.deleteRecord.bind(this, record.ID)}
+            handleClick={this.deleteRecord}
-                    key={"action-" + i + "-delete"}
+            key={`action-${i}-delete`}
-                />
+            record={record}
-            </GridFieldCell>;
+          />,
+        </GridFieldCell>
+      );
 
       return <GridFieldRow key={i}>{cells.concat(rowActions)}</GridFieldRow>;
     });
 
     return (
-            <GridFieldTable header={header} rows={rows}></GridFieldTable>
+      <GridFieldTable header={header} rows={rows} />
     );
   }
 
@@ -79,7 +90,7 @@ class GridField extends SilverStripeComponent {
    * @param number int
    * @param event
    */
-    deleteRecord(id, event) {
+  deleteRecord(event, id) {
     event.preventDefault();
     this.props.actions.deleteRecord(
       this.props.data.recordType,
@@ -89,7 +100,7 @@ class GridField extends SilverStripeComponent {
     );
   }
 
-    editRecord(id, event) {
+  editRecord(event) {
     event.preventDefault();
     // TODO
   }
@@ -100,21 +111,21 @@ GridField.propTypes = {
   data: React.PropTypes.shape({
     recordType: React.PropTypes.string.isRequired,
     headerColumns: React.PropTypes.array,
-        collectionReadEndpoint: React.PropTypes.object
+    collectionReadEndpoint: React.PropTypes.object,
-    })
+  }),
 };
 
 function mapStateToProps(state, ownProps) {
-    let recordType = ownProps.data ? ownProps.data.recordType : null;
+  const recordType = ownProps.data ? ownProps.data.recordType : null;
   return {
-        records: (state.records && recordType) ? state.records[recordType] : []
+    records: (state.records && recordType) ? state.records[recordType] : [],
-    }
+  };
 }
 
 function mapDispatchToProps(dispatch) {
   return {
-        actions: bindActionCreators(actions, dispatch)
+    actions: bindActionCreators(actions, dispatch),
-    }
+  };
 }
 
 export default connect(mapStateToProps, mapDispatchToProps)(GridField);

admin/javascript/src/components/grid-field/row.js

@@ -5,7 +5,7 @@ class GridFieldRowComponent extends SilverStripeComponent {
 
   render() {
     return (
-            <li className='grid-field-row-component [ list-group-item ]'>{this.props.children}</li>
+      <li className="grid-field-row-component [ list-group-item ]">{this.props.children}</li>
     );
   }
 

admin/javascript/src/components/grid-field/table.js

@@ -5,7 +5,7 @@ class GridFieldTableComponent extends SilverStripeComponent {
 
   render() {
     return (
-            <ul className='grid-field-table-component [ list-group ]'>
+      <ul className="grid-field-table-component [ list-group ]">
         {this.generateHeader()}
         {this.generateRows()}
       </ul>
@@ -57,7 +57,7 @@ class GridFieldTableComponent extends SilverStripeComponent {
 GridFieldTableComponent.propTypes = {
   data: React.PropTypes.object,
   header: React.PropTypes.object,
-    rows: React.PropTypes.array
+  rows: React.PropTypes.array,
 };
 
 export default GridFieldTableComponent;

admin/javascript/src/components/hidden-field/index.js

@@ -11,7 +11,7 @@ class HiddenFieldComponent extends SilverStripeComponent {
 
   render() {
     return (
-            <div className='field hidden'>
+      <div className="field hidden">
         <input {...this.getInputProps()} />
       </div>
     );
@@ -24,11 +24,11 @@ class HiddenFieldComponent extends SilverStripeComponent {
       name: this.props.name,
       onChange: this.props.onChange,
       type: 'hidden',
-            value: this.props.value
+      value: this.props.value,
     };
   }
 
-    handleChange(event) {
+  handleChange() {
     if (typeof this.props.onChange === 'undefined') {
       return;
     }
@@ -42,7 +42,7 @@ HiddenFieldComponent.propTypes = {
   extraClass: React.PropTypes.string,
   name: React.PropTypes.string.isRequired,
   onChange: React.PropTypes.func,
-    value: React.PropTypes.string
+  value: React.PropTypes.string,
 };
 
 export default HiddenFieldComponent;

admin/javascript/src/components/north-header-breadcrumbs/index.js

@@ -20,16 +20,18 @@ class NorthHeaderBreadcrumbsComponent extends SilverStripeComponent {
       return null;
     }
 
-        var breadcrumbs = this.props.crumbs.map((crumb, index, crumbs) => {
+    const breadcrumbs = this.props.crumbs.map((crumb, index, crumbs) => {
+      let component;
       // If its the last item in the array
       if (index === crumbs.length - 1) {
-                return <span key={index} className="crumb last">{crumb.text}</span>;
+        component = <span key={index} className="crumb last">{crumb.text}</span>;
       } else {
-                return [
+        component = [
           <a key={index} className="cms-panel-link crumb" href={crumb.href}>{crumb.text}</a>,
-                    <span className="sep">/</span>
+          <span className="sep">/</span>,
         ];
       }
+      return component;
     });
 
     return breadcrumbs;

admin/javascript/src/components/north-header/index.js

@@ -7,7 +7,7 @@ class NorthHeaderComponent extends SilverStripeComponent {
   render() {
     return (
       <div className="north-header-component">
-                <NorthHeaderBreadcrumbsComponent crumbs={this.getBreadcrumbs()}/>
+        <NorthHeaderBreadcrumbsComponent crumbs={this.getBreadcrumbs()} />
       </div>
     );
   }
@@ -16,13 +16,13 @@ class NorthHeaderComponent extends SilverStripeComponent {
     return [
       {
         text: 'Campaigns',
-                href: 'admin/campaigns'
+        href: 'admin/campaigns',
       },
       {
         text: 'March release',
-                href: 'admin/campaigns/show/1'
+        href: 'admin/campaigns/show/1',
-            }
+      },
-        ]
+    ];
   }
 
 }

admin/javascript/src/components/text-field/index.js

@@ -11,13 +11,13 @@ class TextFieldComponent extends SilverStripeComponent {
 
   render() {
     return (
-            <div className='field text'>
+      <div className="field text">
         {this.props.label &&
-                    <label className='left' htmlFor={'gallery_' + this.props.name}>
+          <label className="left" htmlFor={`gallery_${this.props.name}`}>
             {this.props.label}
           </label>
         }
-                <div className='middleColumn'>
+        <div className="middleColumn">
           <input {...this.getInputProps()} />
         </div>
       </div>
@@ -31,11 +31,11 @@ class TextFieldComponent extends SilverStripeComponent {
       name: this.props.name,
       onChange: this.props.onChange,
       type: 'text',
-            value: this.props.value
+      value: this.props.value,
     };
   }
 
-    handleChange(event) {
+  handleChange() {
     if (typeof this.props.onChange === 'undefined') {
       return;
     }
@@ -49,7 +49,7 @@ TextFieldComponent.propTypes = {
   extraClass: React.PropTypes.string,
   name: React.PropTypes.string.isRequired,
   onChange: React.PropTypes.func,
-    value: React.PropTypes.string
+  value: React.PropTypes.string,
 };
 
 export default TextFieldComponent;

admin/javascript/src/config.js

@@ -23,15 +23,13 @@ class Config {
    * @return array
    */
   static getTopLevelRoutes() {
-        var topLevelRoutes = [];
+    const topLevelRoutes = [];
 
     Object.keys(window.ss.config.sections).forEach((key) => {
       const route = window.ss.config.sections[key].route;
       const isTopLevelRoute = route.indexOf('/') === -1;
       const isUnique = topLevelRoutes.indexOf(route) === -1;
 
-            //console.log(this.getSection(key).route);
-
       if (isTopLevelRoute && isUnique) {
         topLevelRoutes.push(route);
       }

admin/javascript/src/mocks/jQuery.js

@@ -1,15 +1,17 @@
+/* globals jest */
+
 function jQuery() {
   return {
     // Add jQuery methods such as 'find', 'change', 'trigger' as needed.
   };
 }
 
-var mockAjaxFn = jest.genMockFunction();
+const mockAjaxFn = jest.genMockFunction();
 
 mockAjaxFn.mockReturnValue({
   done: jest.genMockFunction(),
   fail: jest.genMockFunction(),
-    always: jest.genMockFunction()
+  always: jest.genMockFunction(),
 });
 
 jQuery.ajax = mockAjaxFn;

admin/javascript/src/mocks/silverstripe-component.js

@@ -1,15 +1,5 @@
 import { Component } from 'react';
 
+// eslint-disable-next-line react/prefer-stateless-function
 export default class SilverStripeComponent extends Component {
-    constructor(props) {
+}
-        super(props);
-    }
-
-    componentDidMount() {
-        
-    }
-
-    componentWillUnmount() {
-        
-    }
-};

admin/javascript/src/reducer-register.js

@@ -2,10 +2,11 @@
  * The register of Redux reducers.
  * @private
  */
-var register = {};
+const register = {};
 
 /**
- * The central register of Redux reducers for the CMS. All registered reducers are combined when the application boots.
+ * The central register of Redux reducers for the CMS.
+ * All registered reducers are combined when the application boots.
  */
 class ReducerRegister {
 
@@ -43,8 +44,6 @@ class ReducerRegister {
     return register[key];
   }
 
-
-
   /**
    * Removes a reducer from the register.
    *
@@ -59,6 +58,6 @@ class ReducerRegister {
 // Create an instance to export. The same instance is exported to
 // each script which imports the reducerRegister. This means the
 // same register is available throughout the application.
-let reducerRegister = new ReducerRegister();
+const reducerRegister = new ReducerRegister();
 
 export default reducerRegister;

admin/javascript/src/sections/campaign-admin/controller.js

@@ -23,14 +23,15 @@ class CampaignAdminContainer extends SilverStripeComponent {
         <FormAction
           label={i18n._t('Campaigns.ADDCAMPAIGN')}
           icon={'plus-circled'}
-                    handleClick={this.addCampaign} />
+          handleClick={this.addCampaign}
+        />
         <FormBuilder schemaUrl={schemaUrl} />
       </div>
     );
   }
 
   addCampaign() {
-        //Add campaign
+    // Add campaign
   }
 
 }
@@ -39,17 +40,17 @@ CampaignAdminContainer.propTypes = {
   config: React.PropTypes.shape({
     forms: React.PropTypes.shape({
       editForm: React.PropTypes.shape({
-                schemaUrl: React.PropTypes.string
+        schemaUrl: React.PropTypes.string,
-            })
-        })
       }),
-    sectionConfigKey: React.PropTypes.string.isRequired
+    }),
+  }),
+  sectionConfigKey: React.PropTypes.string.isRequired,
 };
 
 function mapStateToProps(state, ownProps) {
   return {
-        config: state.config.sections[ownProps.sectionConfigKey]
+    config: state.config.sections[ownProps.sectionConfigKey],
-    }
+  };
 }
 
 export default connect(mapStateToProps)(CampaignAdminContainer);

admin/javascript/src/sections/campaign-admin/index.js

@@ -1,24 +1,22 @@
-import reducerRegister from 'reducer-register';
 import $ from 'jQuery';
 import React from 'react';
 import ReactDOM from 'react-dom';
 import { Provider } from 'react-redux';
 import CampaignAdmin from './controller';
 
-$.entwine('ss', function ($) {
+// eslint-disable-next-line no-shadow
-
+$.entwine('ss', ($) => {
   $('.cms-content.CampaignAdmin').entwine({
-        onadd: function () {
+    onadd() {
       ReactDOM.render(
         <Provider store={window.store}>
-                    <CampaignAdmin sectionConfigKey='CampaignAdmin' />
+          <CampaignAdmin sectionConfigKey="CampaignAdmin" />
         </Provider>
       , this[0]);
     },
 
-        onremove: function () {
+    onremove() {
       ReactDOM.unmountComponentAtNode(this[0]);
-        }
+    },
   });
-
 });

admin/javascript/src/silverstripe-backend.js

@@ -6,13 +6,17 @@ es6promise.polyfill();
  * @see https://github.com/github/fetch#handling-http-error-statuses
  */
 function checkStatus(response) {
+  let ret;
+  let error;
   if (response.status >= 200 && response.status < 300) {
-    return response
+    ret = response;
   } else {
-    var error = new Error(response.statusText)
+    error = new Error(response.statusText);
-    error.response = response
+    error.response = response;
-    throw error
+    throw error;
   }
+
+  return ret;
 }
 
 class SilverStripeBackend {
@@ -73,6 +77,6 @@ class SilverStripeBackend {
 
 // Exported as a singleton so we can implement things like
 // global caching and request batching at some stage.
-let backend = new SilverStripeBackend();
+const backend = new SilverStripeBackend();
 
 export default backend;

admin/javascript/src/silverstripe-component.js

@@ -2,16 +2,41 @@
  * @file Base component which all SilverStripe ReactJS components should extend from.
  */
 
-import React, { PropTypes, Component } from 'react';
+import React, { Component } from 'react';
 import $ from '../../../javascript/src/jQuery';
 
 class SilverStripeComponent extends Component {
 
-	/**
+  constructor(props) {
-	 * @func componentDidMount
+    super(props);
-	 * @desc Bind event listeners which are triggered by legacy-land JavaScript.
+
-	 * This lets us update the component when something happens in the outside world.
+    // Setup component routing.
-	 */
+    if (typeof this.props.route !== 'undefined') {
+      // The component's render method gets switched based on the current path.
+      // If the current path matches the component's route, the component is displayed.
+      // Otherwise the component's render method returns null, resulting in
+      // the component not rendering.
+      this._render = this.render;
+
+      this.render = () => {
+        let component = null;
+
+        if (this.isComponentRoute()) {
+          component = this._render();
+        }
+
+        return component;
+      };
+
+      window.ss.router(this.props.route, (ctx, next) => {
+        this.handleEnterRoute(ctx, next);
+      });
+      window.ss.router.exit(this.props.route, (ctx, next) => {
+        this.handleExitRoute(ctx, next);
+      });
+    }
+  }
+
   componentDidMount() {
     if (typeof this.props.cmsEvents === 'undefined') {
       return;
@@ -21,26 +46,53 @@ class SilverStripeComponent extends Component {
     // there's no guarantee these props will be the same or even present.
     this.cmsEvents = this.props.cmsEvents;
 
-		for (let cmsEvent in this.cmsEvents) {
+    // Bind event listeners which are triggered by legacy-land JavaScript.
+    // This lets us update the component when something happens in the outside world.
+    for (const cmsEvent in this.cmsEvents) {
+      if ({}.hasOwnProperty.call(this.cmsEvents, cmsEvent)) {
         $(document).on(cmsEvent, this.cmsEvents[cmsEvent].bind(this));
       }
     }
+  }
 
-	/**
-	 * @func componentWillUnmount
-	 * @desc Unbind the event listeners we added in componentDidMount.
-	 */
   componentWillUnmount() {
-		for (let cmsEvent in this.cmsEvents) {
+    // Unbind the event listeners we added in componentDidMount.
+    for (const cmsEvent in this.cmsEvents) {
+      if ({}.hasOwnProperty.call(this.cmsEvents, cmsEvent)) {
         $(document).off(cmsEvent);
       }
     }
+  }
+
+  handleEnterRoute(ctx, next) {
+    next();
+  }
+
+  handleExitRoute(ctx, next) {
+    next();
+  }
 
   /**
-	 * @func emitCmsEvent
+   * Checks if the component should be rended on the current path.
+   *
+   * @param object [params] - If a params object is passed in it's
+   * mutated by page.js to contains route parans like ':id'.
+   */
+  isComponentRoute(params = {}) {
+    if (typeof this.props.route === 'undefined') {
+      return true;
+    }
+
+    const route = new window.ss.router.Route(this.props.route);
+
+    return route.match(window.ss.router.current, params);
+  }
+
+  /**
+   * Notifies legacy-land something has changed within our component.
+   *
    * @param string componentEvent - Namespace component event e.g. 'my-component.title-changed'.
    * @param object|string|array|number [data] - Some data to pass with the event.
-	 * @desc Notifies legacy-land something has changed within our component.
    */
   emitCmsEvent(componentEvent, data) {
     $(document).trigger(componentEvent, data);
@@ -49,7 +101,8 @@ class SilverStripeComponent extends Component {
 }
 
 SilverStripeComponent.propTypes = {
-	'cmsEvents': React.PropTypes.object
+  cmsEvents: React.PropTypes.object,
+  route: React.PropTypes.string,
 };
 
 export default SilverStripeComponent;

admin/javascript/src/state/config/action-types.js

@@ -1,3 +1,3 @@
 export default {
-    SET_CONFIG: 'SET_CONFIG'
+  SET_CONFIG: 'SET_CONFIG',
-}
+};

admin/javascript/src/state/config/actions.js

@@ -6,10 +6,9 @@ import ACTION_TYPES from './action-types';
  * @param object config
  */
 export function setConfig(config) {
-    return (dispatch, getState) => {
+  return (dispatch) =>
-        return dispatch({
+    dispatch({
       type: ACTION_TYPES.SET_CONFIG,
-            payload: { config }
+      payload: { config },
     });
-    }
 }

admin/javascript/src/state/config/reducer.js

@@ -2,7 +2,6 @@ import deepFreeze from 'deep-freeze';
 import ACTION_TYPES from './action-types';
 
 function configReducer(state = {}, action) {
-
   switch (action.type) {
 
     case ACTION_TYPES.SET_CONFIG:
@@ -12,7 +11,6 @@ function configReducer(state = {}, action) {
       return state;
 
   }
-
 }
 
 export default configReducer;

admin/javascript/src/state/records/action-types.js

@@ -7,5 +7,5 @@ export default {
   FETCH_RECORDS_SUCCESS: 'FETCH_RECORDS_SUCCESS',
   DELETE_RECORD_REQUEST: 'DELETE_RECORD_REQUEST',
   DELETE_RECORD_FAILURE: 'DELETE_RECORD_FAILURE',
-    DELETE_RECORD_SUCCESS: 'DELETE_RECORD_SUCCESS'
+  DELETE_RECORD_SUCCESS: 'DELETE_RECORD_SUCCESS',
 };

admin/javascript/src/state/records/actions.js

@@ -1,5 +1,4 @@
 import ACTION_TYPES from './action-types';
-import fetch from 'isomorphic-fetch';
 import backend from 'silverstripe-backend.js';
 
 /**
@@ -14,8 +13,8 @@ import backend from 'silverstripe-backend.js';
  * @return string
  */
 function populate(str, params) {
-    let names = ['id'];
+  const names = ['id'];
-    return names.reduce((str, name) => str.replace(`:${name}`, params[name]), str);
+  return names.reduce((acc, name) => acc.replace(`:${name}`, params[name]), str);
 }
 
 /**
@@ -26,19 +25,27 @@ function populate(str, params) {
  * @param string url API endpoint
  */
 export function fetchRecords(recordType, method, url) {
-    let payload = {recordType: recordType};
+  const payload = { recordType };
-    url = populate(url, payload);
+  return (dispatch) => {
-    return (dispatch, getState) => {
+    dispatch({
-		dispatch ({type: ACTION_TYPES.FETCH_RECORDS_REQUEST, payload: payload});
+      type: ACTION_TYPES.FETCH_RECORDS_REQUEST,
-        return backend[method.toLowerCase()](url)
+      payload,
+    });
+    return backend[method.toLowerCase()](populate(url, payload))
     .then(response => response.json())
     .then(json => {
-                dispatch({type: ACTION_TYPES.FETCH_RECORDS_SUCCESS, payload: {recordType: recordType, data: json}})
+      dispatch({
+        type: ACTION_TYPES.FETCH_RECORDS_SUCCESS,
+        payload: { recordType, data: json },
+      });
     })
     .catch((err) => {
-				dispatch({type: ACTION_TYPES.FETCH_RECORDS_FAILURE, payload: {error: err, recordType: recordType}})
+      dispatch({
+        type: ACTION_TYPES.FETCH_RECORDS_FAILURE,
+        payload: { error: err, recordType },
       });
-    }
+    });
+  };
 }
 
 /**
@@ -50,16 +57,24 @@ export function fetchRecords(recordType, method, url) {
  * @param string url API endpoint
  */
 export function deleteRecord(recordType, id, method, url) {
-    let payload = {recordType: recordType, id: id};
+  const payload = { recordType, id };
-    url = populate(url, payload);
+  return (dispatch) => {
-    return (dispatch, getState) => {
+    dispatch({
-		dispatch ({type: ACTION_TYPES.DELETE_RECORD_REQUEST, payload: payload});
+      type: ACTION_TYPES.DELETE_RECORD_REQUEST,
-        return backend[method.toLowerCase()](url)
+      payload,
-			.then(json => {
+    });
-                dispatch({type: ACTION_TYPES.DELETE_RECORD_SUCCESS, payload: {recordType: recordType, id: id}})
+    return backend[method.toLowerCase()](populate(url, payload))
+      .then(() => {
+        dispatch({
+          type: ACTION_TYPES.DELETE_RECORD_SUCCESS,
+          payload: { recordType, id },
+        });
       })
       .catch((err) => {
-				dispatch({type: ACTION_TYPES.DELETE_RECORD_FAILURE, payload: {error: err, recordType: recordType, id: id}})
+        dispatch({
+          type: ACTION_TYPES.DELETE_RECORD_FAILURE,
+          payload: { error: err, recordType, id },
         });
-    }
+      });
+  };
 }

admin/javascript/src/state/records/reducer.js

@@ -34,9 +34,9 @@ function recordsReducer(state = initialState, action) {
     case ACTION_TYPES.FETCH_RECORDS_SUCCESS:
       recordType = action.payload.recordType;
       // TODO Automatic pluralisation from recordType
-            records = action.payload.data._embedded[recordType + 's'];
+      records = action.payload.data._embedded[`${recordType}s`];
       return deepFreeze(Object.assign({}, state, {
-                [recordType]: records
+        [recordType]: records,
       }));
 
     case ACTION_TYPES.DELETE_RECORD_REQUEST:
@@ -48,16 +48,15 @@ function recordsReducer(state = initialState, action) {
     case ACTION_TYPES.DELETE_RECORD_SUCCESS:
       recordType = action.payload.recordType;
       records = state[recordType]
-                .filter(record => record.ID != action.payload.id)
+        .filter(record => record.ID !== action.payload.id);
 
       return deepFreeze(Object.assign({}, state, {
-                [recordType]: records
+        [recordType]: records,
       }));
 
     default:
       return state;
   }
-
 }
 
 export default recordsReducer;

admin/javascript/src/state/schema/action-types.js

@@ -1,5 +1,5 @@
 const ACTION_TYPES = {
-    SET_SCHEMA: 'SET_SCHEMA'
+  SET_SCHEMA: 'SET_SCHEMA',
 };
 
 export default ACTION_TYPES;

admin/javascript/src/state/schema/actions.js

@@ -6,10 +6,9 @@ import ACTION_TYPES from './action-types';
  * @param string schema - JSON schema for the layout.
  */
 export function setSchema(schema) {
-    return (dispatch, getState) => {
+  return (dispatch) =>
-        return dispatch ({
+    dispatch({
       type: ACTION_TYPES.SET_SCHEMA,
-            payload: schema
+      payload: schema,
     });
-    }
 }

admin/javascript/src/state/schema/reducer.js

@@ -4,15 +4,14 @@ import ACTION_TYPES from './action-types';
 const initialState = deepFreeze({});
 
 export default function schemaReducer(state = initialState, action = null) {
-
   switch (action.type) {
 
-        case ACTION_TYPES.SET_SCHEMA:
+    case ACTION_TYPES.SET_SCHEMA: {
       const id = action.payload.schema.schema_url;
-            return deepFreeze(Object.assign({}, state, {[id]: action.payload}));
+      return deepFreeze(Object.assign({}, state, { [id]: action.payload }));
+    }
 
     default:
       return state;
   }
-
 }

gulpfile.js

@@ -1,29 +1,31 @@
-var packageJson =  require('./package.json'),
+const packageJson = require('./package.json');
-    autoprefixer = require('autoprefixer'),
+const autoprefixer = require('autoprefixer');
-    babelify =     require('babelify'),
+const babelify = require('babelify'); // eslint-disable-line no-unused-vars
-    browserify =   require('browserify'),
+const browserify = require('browserify');
-    eventStream =  require('event-stream'),
+const eventStream = require('event-stream');
-    glob =         require('glob'),
+const glob = require('glob');
-    gulp =         require('gulp'),
+const gulp = require('gulp');
-    babel =        require('gulp-babel'),
+const babel = require('gulp-babel');
-    diff =         require('gulp-diff'),
+const diff = require('gulp-diff');
-    gulpif =       require('gulp-if'),
+const gulpif = require('gulp-if');
-    notify =       require('gulp-notify'),
+const notify = require('gulp-notify');
-    postcss =      require('gulp-postcss'),
+const postcss = require('gulp-postcss');
-    sass =         require('gulp-sass'),
+const sass = require('gulp-sass');
-    sourcemaps =   require('gulp-sourcemaps'),
+const sourcemaps = require('gulp-sourcemaps');
-    uglify =       require('gulp-uglify'),
+const uglify = require('gulp-uglify');
-    gulpUtil =     require('gulp-util'),
+const gulpUtil = require('gulp-util');
-    path =         require('path'),
+const path = require('path');
-    source =       require('vinyl-source-stream'),
+const source = require('vinyl-source-stream');
-    buffer =       require('vinyl-buffer'),
+const buffer = require('vinyl-buffer');
-    semver =       require('semver'),
+const semver = require('semver');
-    sprity =       require('sprity'),
+const sprity = require('sprity');
-    watchify =     require('watchify');
+const watchify = require('watchify');
 
-var isDev = typeof process.env.npm_config_development !== 'undefined';
+const isDev = typeof process.env.npm_config_development !== 'undefined';
 
-var PATHS = {
+process.env.NODE_ENV = isDev ? 'development' : 'production';
+
+const PATHS = {
   MODULES: './node_modules',
   ADMIN: './admin',
   ADMIN_IMAGES: './admin/images',
@@ -35,25 +37,25 @@ var PATHS = {
   FRAMEWORK_THIRDPARTY: './thirdparty',
   FRAMEWORK_DEV_INSTALL: './dev/install',
   FRAMEWORK_JAVASCRIPT_SRC: './javascript/src',
-    FRAMEWORK_JAVASCRIPT_DIST: './javascript/dist'
+  FRAMEWORK_JAVASCRIPT_DIST: './javascript/dist',
 };
 
 // Folders which contain both scss and css folders to be compiled
-var rootCompileFolders = [PATHS.FRAMEWORK, PATHS.ADMIN, PATHS.FRAMEWORK_DEV_INSTALL]
+const rootCompileFolders = [PATHS.FRAMEWORK, PATHS.ADMIN, PATHS.FRAMEWORK_DEV_INSTALL];
 
-var browserifyOptions = {
+const browserifyOptions = {
   debug: true,
-	paths: [PATHS.ADMIN_JAVASCRIPT_SRC, PATHS.FRAMEWORK_JAVASCRIPT_SRC]
+  paths: [PATHS.ADMIN_JAVASCRIPT_SRC, PATHS.FRAMEWORK_JAVASCRIPT_SRC],
 };
 
-var babelifyOptions = {
+const babelifyOptions = {
   presets: ['es2015', 'react'],
   ignore: /(node_modules|thirdparty)/,
-    comments: false
+  comments: false,
 };
 
 // Used for autoprefixing css properties (same as Bootstrap Aplha.2 defaults)
-var supportedBrowsers = [
+const supportedBrowsers = [
   'Chrome >= 35',
   'Firefox >= 31',
   'Edge >= 12',
@@ -62,11 +64,11 @@ var supportedBrowsers = [
   'Safari >= 8',
   'Android 2.3',
   'Android >= 4',
-    'Opera >= 12'
+  'Opera >= 12',
 ];
 
-var blueimpFileUploadConfig = {
+const blueimpFileUploadConfig = {
-    src: PATHS.MODULES + '/blueimp-file-upload',
+  src: `${PATHS.MODULES}/blueimp-file-upload`,
   dest: PATHS.FRAMEWORK_THIRDPARTY + '/jquery-fileupload',
   files: [
     '/cors/jquery.postmessage-transport.js',
@@ -219,7 +221,6 @@ gulp.task('bundle-lib', function bundleLib() {
     .require(PATHS.FRAMEWORK_JAVASCRIPT_SRC + '/router.js', { expose: 'router' })
     .require(PATHS.ADMIN_JAVASCRIPT_SRC + '/silverstripe-component', { expose: 'silverstripe-component' })
     .bundle()
-		.on('update', bundleLib)
     .on('error', notify.onError({ message: bundleFileName + ': <%= error.message %>' }))
     .pipe(source(bundleFileName))
     .pipe(buffer())

javascript/src/router.js

@@ -12,15 +12,16 @@ function show(pageShow) {
     // Normalise `path` so that pattern matching is more robust.
     // For example if your route is '/pages' it should match when `path` is
     // 'http://foo.com/admin/pages', '/pages', and 'pages'.
-        var el = document.createElement('a');
+    const el = document.createElement('a');
+    let pathWithSearch;
     el.href = path;
-		path = el.pathname;
+    pathWithSearch = el.pathname;
-		if(el.search) {
+    if (el.search) {
-			path += el.search;
+      pathWithSearch += el.search;
     }
 
-        return pageShow(path, state, dispatch, push);
+    return pageShow(pathWithSearch, state, dispatch, push);
-    }
+  };
 }
 
 page.show = show(page.show);

package.json

@@ -17,7 +17,8 @@
     "sprites": "gulp sprites",
     "test": "NODE_PATH=\"./javascript/src:./admin/javascript/src\" jest",
     "coverage": "NODE_PATH=\"./javascript/src:./admin/javascript/src\" jest --coverage",
-    "thirdparty": "gulp thirdparty"
+    "thirdparty": "gulp thirdparty",
+    "lint": "eslint javascript/src & eslint admin/javascript/src"
   },
   "repository": {
     "type": "git",
@@ -60,6 +61,9 @@
     "babel-preset-react": "^6.5.0",
     "babelify": "^7.2.0",
     "browserify": "^13.0.0",
+    "eslint": "^2.5.3",
+    "eslint-config-airbnb": "^6.2.0",
+    "eslint-plugin-react": "^4.2.3",
     "event-stream": "^3.3.2",
     "glob": "^6.0.4",
     "gulp": "^3.9.0",