Function computeNextEntry

modules/store-devtools/src/reducer.ts:55–82

* Computes the next entry in the log by applying an action.

(
  reducer: ActionReducer<any, any>,
  action: Action,
  state: any,
  error: any,
  errorHandler: ErrorHandler
)

 * Computes the next entry in the log by applying an action.
 */
function computeNextEntry(
  reducer: ActionReducer<any, any>,
  action: Action,
  state: any,
  error: any,
  errorHandler: ErrorHandler
) {
  if (error) {
    return {
      state,
      error: 'Interrupted by an error up the chain',
    };
  }

  let nextState = state;
  let nextError;
  try {
    nextState = reducer(state, action);
  } catch (err: any) {
    nextError = err.toString();
    errorHandler.handleError(err);
  }

  return {
    state: nextState,
    error: nextError,
  };
}

/**
 * Runs the reducer on invalidated actions to get a fresh computation log.