chore: add code formatting and linting (#952)

packages/netlify-cms-widget-select/src/SelectControl.js

@@ -12,13 +12,15 @@ export default class SelectControl extends React.Component {
     setActiveStyle: PropTypes.func.isRequired,
     setInactiveStyle: PropTypes.func.isRequired,
     field: ImmutablePropTypes.contains({
-      options: ImmutablePropTypes.listOf(PropTypes.oneOfType([
-        PropTypes.string,
-        ImmutablePropTypes.contains({
-          label: PropTypes.string.isRequired,
-          value: PropTypes.string.isRequired,
-        }),
-      ])).isRequired,
+      options: ImmutablePropTypes.listOf(
+        PropTypes.oneOfType([
+          PropTypes.string,
+          ImmutablePropTypes.contains({
+            label: PropTypes.string.isRequired,
+            value: PropTypes.string.isRequired,
+          }),
+        ]),
+      ).isRequired,
     }),
   };
 
@@ -26,7 +28,7 @@ export default class SelectControl extends React.Component {
     value: '',
   };
 
-  handleChange = (e) => {
+  handleChange = e => {
     this.props.onChange(e.target.value);
   };
 
@@ -40,7 +42,7 @@ export default class SelectControl extends React.Component {
 
     const options = [
       ...(field.get('default', false) ? [] : [{ label: '', value: '' }]),
-      ...fieldOptions.map((option) => {
+      ...fieldOptions.map(option => {
         if (typeof option === 'string') {
           return { label: option, value: option };
         }
@@ -57,11 +59,11 @@ export default class SelectControl extends React.Component {
         onFocus={setActiveStyle}
         onBlur={setInactiveStyle}
       >
-        {
-          options.map(
-            (option, idx) => <option key={idx} value={option.value}>{option.label}</option>
-          )
-        }
+        {options.map((option, idx) => (
+          <option key={idx} value={option.value}>
+            {option.label}
+          </option>
+        ))}
       </select>
     );
   }

packages/netlify-cms-widget-select/src/SelectPreview.js

@@ -4,7 +4,7 @@ import { WidgetPreviewContainer } from 'netlify-cms-ui-default';
 
 const SelectPreview = ({ value }) => (
   <WidgetPreviewContainer>{value ? value.toString() : null}</WidgetPreviewContainer>
-)
+);
 
 SelectPreview.propTypes = {
   value: PropTypes.string,