add more type casts

src/views/ContactAmountsView.vue

@@ -108,6 +108,7 @@
 import { AxiosError, AxiosRequestHeaders } from "axios";
 import * as R from "ramda";
 import { Component, Vue } from "vue-facing-decorator";
+import { Router } from "vue-router";
 
 import QuickNav from "@/components/QuickNav.vue";
 import { NotificationIface } from "@/constants/app";
@@ -144,7 +145,7 @@ export default class ContactAmountssView extends Vue {
   async created() {
     try {
       await db.open();
-      const contactDid = this.$route.query.contactDid as string;
+      const contactDid = (this.$route as Router).query["contactDid"] as string;
       this.contact = (await db.contacts.get(contactDid)) || null;
 
       const settings = await db.settings.get(MASTER_SETTINGS_KEY);