The Reach SDK requires callback handlers to manage authentication and tenant events.

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Required Callbacks

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onReauthRequested Callback

The onReauthRequested callback is triggered when the authentication token expires or becomes invalid. Your implementation should:
  1. Fetch a new token from your server
  2. Return the new token to update the SDK
const handleReauth = async () => {
  try {
    // Fetch a new auth token from your server
    const response = await fetch('/reach-authtoken');
    const data = await response.json();

    if (!data.success) {
      throw new Error('Failed to get new token');
    }

    // Return the new token
    return data.token;
  } catch (error) {
    console.error('Authentication failed:', error);
    // Handle error appropriately in your UI
  }
};
The SDK will use the returned token to automatically update its authentication state. You do not need to manually dispose and reinitialize the SDK.