update changelog and prettier fixups

Signed-off-by: Emma Indal <emma.indahl@gmail.com>

.changeset/khaki-jokes-grab.md

@@ -2,4 +2,4 @@
 '@backstage/core-components': patch
 ---
 
-Accept JSX Element as additionalInfo property of ErrorPage component
+Adjust ErrorPage to accept optional supportUrl property to override app config and JSX Element as additionalInfo property.

packages/core-components/src/layout/ErrorPage/ErrorPage.test.tsx

@@ -34,7 +34,16 @@ describe('<ErrorPage/>', () => {
 
   it('should render with additional information including link', async () => {
     const { getByText } = await renderInTestApp(
-      <ErrorPage status="404" statusMessage="PAGE NOT FOUND" additionalInfo={<>This is some additional information including <Link to="/test">a link</Link></>} />,
+      <ErrorPage
+        status="404"
+        statusMessage="PAGE NOT FOUND"
+        additionalInfo={
+          <>
+            This is some additional information including{' '}
+            <Link to="/test">a link</Link>
+          </>
+        }
+      />,
     );
     expect(
       getByText(/looks like someone dropped the mic!/i),
@@ -45,23 +54,33 @@ describe('<ErrorPage/>', () => {
 
   it('should render with default support url if supportUrl is not provided', async () => {
     const { getByText } = await renderInTestApp(
-      <ErrorPage status="404" statusMessage="PAGE NOT FOUND"  />,
+      <ErrorPage status="404" statusMessage="PAGE NOT FOUND" />,
     );
     expect(
       getByText(/looks like someone dropped the mic!/i),
     ).toBeInTheDocument();
     expect(getByText(/contact support/i)).toBeInTheDocument();
-    expect(getByText(/contact support/i)).toHaveAttribute('href', 'https://github.com/backstage/backstage/issues');
+    expect(getByText(/contact support/i)).toHaveAttribute(
+      'href',
+      'https://github.com/backstage/backstage/issues',
+    );
   });
 
   it('should override support url if supportUrl property is provided', async () => {
     const { getByText } = await renderInTestApp(
-      <ErrorPage status="404" statusMessage="PAGE NOT FOUND" supportUrl='https://error-page-test-support-url.com' />,
+      <ErrorPage
+        status="404"
+        statusMessage="PAGE NOT FOUND"
+        supportUrl="https://error-page-test-support-url.com"
+      />,
     );
     expect(
       getByText(/looks like someone dropped the mic!/i),
     ).toBeInTheDocument();
     expect(getByText(/contact support/i)).toBeInTheDocument();
-    expect(getByText(/contact support/i)).toHaveAttribute('href', 'https://error-page-test-support-url.com');
+    expect(getByText(/contact support/i)).toHaveAttribute(
+      'href',
+      'https://error-page-test-support-url.com',
+    );
   });
 });

packages/core-components/src/layout/ErrorPage/ErrorPage.tsx

@@ -89,7 +89,8 @@ export function ErrorPage(props: IErrorPageProps) {
           <Link to="#" data-testid="go-back-link" onClick={() => navigate(-1)}>
             Go back
           </Link>
-          ... or please <Link to={supportUrl || support.url}>contact support</Link> if you
+          ... or please{' '}
+          <Link to={supportUrl || support.url}>contact support</Link> if you
           think this is a bug.
         </Typography>
       </Grid>