Merge pull request #341 from HappyGray24/hotfix/destroying-not-initialized-swiper

Fix: When destroying a component with an not initialized swiper.

Author: surmon-china

dist/ssr.js

@@ -77,7 +77,9 @@ var swiperDirective = function swiperDirective(globalOptions) {
       var instanceName = getInstanceName(el, binding, vnode);
       var swiper = vnode.context[instanceName];
       if (swiper) {
-        swiper.destroy && swiper.destroy();
+        if (swiper.destroy && swiper.initialized === true) {
+          swiper.destroy();
+        }
         delete vnode.context[instanceName];
       }
     }

src/ssr.js

@@ -113,7 +113,9 @@ const swiperDirective = globalOptions => {
       const instanceName = getInstanceName(el, binding, vnode)
       const swiper = vnode.context[instanceName]
       if (swiper) {
-        swiper.destroy && swiper.destroy()
+        if (swiper.destroy && swiper.initialized === true) {
+          swiper.destroy();
+        }
         delete vnode.context[instanceName]
       }
     }