code: function resolveUse (appendList, increment, options, resolver) {
      return function resolveUseClosure (value) {
        // TODO This should state.options('update..
        // TODO look at all of options.xxxx
        if (resolver.settled && !options.updateAfterSettlement) {
          return;
        }
  
        var promise = resolver.promise;
        resolver[appendList].push(value);
        promise[increment] += 1;
        promise.pending -= 1;
  
        if (resolver.i >= 0) {
          var resume = resolver.resume;
  
          resumeSubscriptionDispatcher(
            resume.topic, resume.data, options, resume.subscriptions,
            resolver, resume.fulfill, resume.reject
          );
          return;
        }
  
        evaluateLatch(resolver, options);
      };
    }
docs: Takes care all the bookkeeping work surrounding a subscriber resolving resolving.