fix(Components): add initial state and remove empty state validation (#…

…1381)

* fix(Components): add initial state and remove empty state validation

* fix(Components): revert Tooltip.js changes

* fix(Components): set initial selected in TileGroup component

src/components/AccordionItem/AccordionItem.js

@@ -62,8 +62,8 @@ export default class AccordionItem extends Component {
   };
 
   static getDerivedStateFromProps({ open }, state) {
-    const { prevOpen } = state || {};
-    return state && prevOpen === open
+    const { prevOpen } = state;
+    return prevOpen === open
       ? null
       : {
           open,

src/components/FileUploader/FileUploader.js

@@ -94,8 +94,8 @@ export class FileUploaderButton extends Component {
   };
 
   static getDerivedStateFromProps({ labelText }, state) {
-    const { prevLabelText } = state || {};
-    return state && prevLabelText === labelText
+    const { prevLabelText } = state;
+    return prevLabelText === labelText
       ? null
       : {
           labelText,

src/components/NumberInput/NumberInput.js

@@ -65,7 +65,7 @@ export default class NumberInput extends Component {
   _inputRef = null;
 
   static getDerivedStateFromProps({ min, value }, state) {
-    const { prevValue } = state || {};
+    const { prevValue } = state;
     return prevValue === value
       ? null
       : {

src/components/TileGroup/TileGroup.js

@@ -4,6 +4,11 @@ import RadioTile from '../RadioTile';
 import warning from 'warning';
 
 export default class TileGroup extends React.Component {
+  state = {
+    selected: this.props.valueSelected || this.props.defaultSelected || null,
+    prevValueSelected: this.props.valueSelected,
+  };
+
   static propTypes = {
     children: PropTypes.node,
     className: PropTypes.string,
@@ -20,8 +25,8 @@ export default class TileGroup extends React.Component {
   };
 
   static getDerivedStateFromProps({ valueSelected, defaultSelected }, state) {
-    const { prevValueSelected } = state || {};
-    return state && prevValueSelected === valueSelected
+    const { prevValueSelected } = state;
+    return prevValueSelected === valueSelected
       ? null
       : {
           selected: valueSelected || defaultSelected || null,