From af58d3fdb886752531060c52a5ed82aea88a6142 Mon Sep 17 00:00:00 2001
From: Nikita Poltoratsky <parapupum@gmail.com>
Date: Sat, 29 Dec 2018 19:09:34 +0300
Subject: [PATCH] fix(theme): check ref before detaching (#1116)

---
 .../components/datepicker/datepicker.component.ts      | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/framework/theme/components/datepicker/datepicker.component.ts b/src/framework/theme/components/datepicker/datepicker.component.ts
index c58f574197..8617b441c9 100644
--- a/src/framework/theme/components/datepicker/datepicker.component.ts
+++ b/src/framework/theme/components/datepicker/datepicker.component.ts
@@ -209,7 +209,10 @@ export abstract class NbBasePicker<D, T, P> extends NbDatepicker<T> implements O
   ngOnDestroy() {
     this.alive = false;
     this.hide();
-    this.ref.dispose();
+
+    if (this.ref) {
+      this.ref.dispose();
+    }
   }
 
   /**
@@ -238,7 +241,10 @@ export abstract class NbBasePicker<D, T, P> extends NbDatepicker<T> implements O
   }
 
   hide() {
-    this.ref.detach();
+    if (this.ref) {
+      this.ref.detach();
+    }
+
     // save current value if picker was rendered
     if (this.picker) {
       this.queue = this.value;