Method alwaysSuppressPropagation

lib/handler_stack.js:127–132

(handler = null)

  }

  alwaysSuppressPropagation(handler = null) {
    // TODO(philc): Shorten this.
    if ((typeof handler === "function" ? handler() : undefined) === this.suppressEvent) {
      return this.suppressEvent;
    } else return this.suppressPropagation;
  }

  // Debugging.
  logResult(eventNumber, type, event, handler, result) {