not work

package-lock.json

@@ -5,6 +5,7 @@
   "requires": true,
   "packages": {
     "": {
+      "name": "railgun-routing-server",
       "version": "0.0.1",
       "dependencies": {
         "lodash": "^4.17.21"

src/Router.ts

@@ -93,7 +93,6 @@ export class Router {
 
   update(socket: Socket) {
     const changedVia: Record<number, number> = {};
-    const changedPlan: Record<number, number> = {};
     const metric: Record<number, number> = {};
     for (const to of Router.all.filter(r => r.id !== this.id)) {
       // 计算最优下一跳
@@ -113,12 +112,19 @@ export class Router {
       }
     }
 
+    const changedPlan: Record<number, number | null> = {};
     for (const plan of plans.filter(plan => !plan.routers.includes(this.id))) {
       const currentPlan = this.plan[plan.id];
-      const bestPlan = _.minBy(plan.routers, to => metric[to])!;
-      if (currentPlan !== bestPlan) {
+      const currentMetric =
+      const items = plan.routers.map(to => [to, metric[to]]);
+      const [bestPlan, bestMetric] = _.minBy(items, ([t, m]) => m)!;
+
+      if (bestMetric === Infinity) {
+        changedPlan[plan.id] = null;
+      } else {
         changedPlan[plan.id] = bestPlan;
       }
+
     }
 
     if (!_.isEmpty(changedVia) || !_.isEmpty(changedPlan)) {