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/// <reference path="fourslash.ts" />
//// class RoyalGuard {
//// isLeader(): this is LeadGuard {
//// return this instanceof LeadGuard;
//// }
//// isFollower(): this is FollowerGuard {
//// return this instanceof FollowerGuard;
//// }
//// }
////
//// class LeadGuard extends RoyalGuard {
//// lead(): void {};
//// }
////
//// class FollowerGuard extends RoyalGuard {
//// follow(): void {};
//// }
////
//// let a: RoyalGuard = new FollowerGuard();
//// if (a.is/*1*/Leader()) {
//// a./*2*/;
//// }
//// else if (a.is/*3*/Follower()) {
//// a./*4*/;
//// }
////
//// interface GuardInterface {
//// isLeader(): this is LeadGuard;
//// isFollower(): this is FollowerGuard;
//// }
////
//// let b: GuardInterface;
//// if (b.is/*5*/Leader()) {
//// b./*6*/;
//// }
//// else if (b.is/*7*/Follower()) {
//// b./*8*/;
//// }
////
//// let leader/*13*/Status = a.isLeader();
//// function isLeaderGuard(g: RoyalGuard) {
//// return g.isLeader();
//// }
//// let checked/*14*/LeaderStatus = isLeader/*15*/Guard(a);
goTo.marker("2");
verify.completionListContains("lead");
goTo.marker("4");
verify.completionListContains("follow");
goTo.marker("6");
verify.completionListContains("lead");
goTo.marker("8");
verify.completionListContains("follow");
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