fix

src/mixin/blockChainBrowser.ts

@@ -43,12 +43,9 @@ export default Vue.extend({
     this.fetchLatestTxListData();
     getNodeNum().then((res) => {
       if (res.error === null) {
-        this.nodeNum = (res.result.countries || []).reduce(
-          (prev: number, cur: { country: string; value: number }) => {
+        this.nodeNum = (res.result.countries || []).reduce((prev, cur) => {
           return prev + cur.value;
-          },
-          0
-        );
+        }, 0);
       }
     });
 

src/service/blockChainBrowser.ts

-import { axios } from ".";
+import { axios, iJrpcRet } from ".";
 
 const scanApi = "/setScan";
 
-export function getNodeNum() {
+export function getNodeNum(): Promise<
+  iJrpcRet<{
+    countries: {
+      country: string;
+      value: number;
+    }[];
+  }>
+> {
   return axios(scanApi, {
     method: "post",
     params: {

src/service/index.ts

@@ -15,3 +15,9 @@ export function axios(
     return ret.json();
   });
 }
+
+export interface iJrpcRet<T> {
+  id: number;
+  error: null | string;
+  result: T;
+}