[add] View prop nativeID

Maps the View prop 'nativeID' to DOM 'id' as these are equivalent.
Enables declarative use of various 'aria-*' properties that require ID
references.

Ref #1116

Author: necolas

packages/react-native-web/src/exports/View/ViewPropTypes.js

@@ -38,6 +38,7 @@ export type ViewProps = {
   children?: any,
   hitSlop?: EdgeInsetsProp,
   importantForAccessibility?: 'auto' | 'yes' | 'no' | 'no-hide-descendants',
+  nativeID?: string,
   onBlur?: Function,
   onClick?: Function,
   onClickCapture?: Function,
@@ -87,6 +88,7 @@ const ViewPropTypes = {
   children: any,
   hitSlop: EdgeInsetsPropType,
   importantForAccessibility: oneOf(['auto', 'no', 'no-hide-descendants', 'yes']),
+  nativeID: string,
   onBlur: func,
   onClick: func,
   onClickCapture: func,

packages/react-native-web/src/modules/createDOMProps/__tests__/index-test.js

@@ -183,6 +183,12 @@ describe('modules/createDOMProps', () => {
     expect(props['aria-hidden']).toEqual(true);
   });
 
+  test('prop "nativeID" becomes "id"', () => {
+    const nativeID = 'Example.nativeID';
+    const props = createProps({ nativeID });
+    expect(props.id).toEqual(nativeID);
+  });
+
   test('prop "testID" becomes "data-testid"', () => {
     const testID = 'Example.testID';
     const props = createProps({ testID });

packages/react-native-web/src/modules/createDOMProps/index.js

@@ -77,6 +77,7 @@ const createDOMProps = (component, props, styleResolver) => {
     accessibilityLabel,
     accessibilityLiveRegion,
     importantForAccessibility,
+    nativeID,
     placeholderTextColor,
     pointerEvents,
     style: providedStyle,
@@ -164,10 +165,15 @@ const createDOMProps = (component, props, styleResolver) => {
   }
 
   // OTHER
+  // Native element ID
+  if (nativeID && nativeID.constructor === String) {
+    domProps.id = nativeID;
+  }
   // Link security and automation test ids
   if (component === 'a' && domProps.target === '_blank') {
     domProps.rel = `${domProps.rel || ''} noopener noreferrer`;
   }
+  // Automated test IDs
   if (testID && testID.constructor === String) {
     domProps['data-testid'] = testID;
   }

packages/website/storybook/1-components/View/ViewScreen.js

@@ -119,6 +119,12 @@ const ViewScreen = () => (
         ]}
       />
 
+      <DocItem
+        name="nativeID"
+        typeInfo="?string"
+        description="Used to locate this view from any native DOM code, or to define accessibility relationships. This is rendered to the native 'id' DOM attribute"
+      />
+
       <DocItem name="onBlur" typeInfo="?function" />
       <DocItem name="onContextMenu" typeInfo="?function" />
       <DocItem name="onFocus" typeInfo="?function" />