fix: subs error handling, closes #877

Author: Akryum

packages/vue-apollo/src/smart-subscription.js

@@ -19,6 +19,14 @@ export default class SmartSubscription extends SmartApollo {
     }
   }
 
+  generateApolloOptions (variables) {
+    const apolloOptions = super.generateApolloOptions(variables)
+
+    apolloOptions.onError = this.catchError.bind(this)
+
+    return apolloOptions
+  }
+
   executeApollo (variables) {
     const variablesJson = JSON.stringify(variables)
     if (this.sub) {
@@ -67,4 +75,13 @@ export default class SmartSubscription extends SmartApollo {
       this.options.result.call(this.vm, data, this.key)
     }
   }
+
+  catchError (error) {
+    super.catchError(error)
+    // Restart the subscription
+    if (!this.skip) {
+      this.stop()
+      this.start()
+    }
+  }
 }