列车曲线图限制5分钟

src/stores/line-store.ts

@@ -107,6 +107,11 @@ export const useLineStore = defineStore('line', {
     setTrainStateMap(v: TrainState[]) {
       const a = new Date();
       this.trainStateMap.set(a, v);
+      this.trainStateMap.forEach((item, key) => {
+        if (a.getTime() - key.getTime() > 5 * 60 * 1000) {
+          this.trainStateMap.delete(key);
+        }
+      });
     },
     clearTrainStateMap() {
       this.trainStateMap.clear();