Function executeWithInvalidateFallback

packages/core/src/render3/hmr.ts:326–346

* Runs an HMR-related function and falls back to * invalidating the HMR data if it throws an error.

(
  importMeta: ImportMetaExtended | null,
  id: string | null,
  callback: () => void,
)

 * invalidating the HMR data if it throws an error.
 */
function executeWithInvalidateFallback(
  importMeta: ImportMetaExtended | null,
  id: string | null,
  callback: () => void,
) {
  try {
    callback();
  } catch (e) {
    const error = e as {message?: string; stack?: string};

    // If we have all the necessary information and APIs to send off the invalidation
    // request, send it before rethrowing so the dev server can decide what to do.
    if (id !== null && error.message) {
      const toLog = error.message + (error.stack ? '\n' + error.stack : '');
      importMeta?.hot?.send?.('angular:invalidate', {id, message: toLog, error: true});
    }

    // Throw the error in case the page doesn't get refreshed.
    throw e;
  }
}

/**
 * Replaces one LView in the tree with another one.