backstage/.changeset/strong-rice-warn.md

@backstage/core-components

@backstage/core-components
patch

Added an option to allow the AlertMessage to be self-closing. This is done with a new display property that is set to transient on the AlertMessage when triggering a message to the AlertApi. The length of time that these transient messages stay open for can be set using the transientTimeoutMs prop on the AlertDisplay in the App.tsx. Here is an example:

  const App = () => (
    <AppProvider>
+     <AlertDisplay transientTimeoutMs={2500} />
      <OAuthRequestDialog />
      <AppRouter>
        <Root>{routes}</Root>
      </AppRouter>
    </AppProvider>
  );

The above example will set the transient timeout to 2500ms from the default of 5000ms