diff --git a/src/VillageController.ts b/src/VillageController.ts
index fee9b34..ae1e719 100644
--- a/src/VillageController.ts
+++ b/src/VillageController.ts
@@ -8,8 +8,8 @@ import { VillageStorage } from './Storage/VillageStorage';
 import { ReceiveResourcesMode } from './Core/Village';
 import { ResourceType } from './Core/ResourceType';
 import { UpgradeBuildingTask } from './Task/UpgradeBuildingTask';
-import * as _ from 'underscore';
 import { GARNER_ID, WAREHOUSE_ID } from './Core/Buildings';
+import { first } from './utils';
 
 export class VillageController {
     private readonly villageId: number;
@@ -195,7 +195,7 @@ export class VillageController {
         // Find ready for building slots and sort them by level
         cropSlots.sort((s1, s2) => s1.level - s2.level);
 
-        const targetCropBuildId = _.first(cropSlots)?.buildId;
+        const targetCropBuildId = first(cropSlots)?.buildId;
         if (!targetCropBuildId) {
             return;
         }
@@ -250,7 +250,7 @@ export class VillageController {
             return;
         }
 
-        const firstSlot = _.first(storageSlots);
+        const firstSlot = first(storageSlots);
         if (firstSlot) {
             this.addTask(UpgradeBuildingTask.name, { buildId: firstSlot.buildId, buildTypeId });
         }
diff --git a/src/VillageState.ts b/src/VillageState.ts
index c941023..896e4c7 100644
--- a/src/VillageState.ts
+++ b/src/VillageState.ts
@@ -26,6 +26,18 @@ export interface TaskQueueState {
     finishTs: number;
 }
 
+interface VillageProductionQueueState {
+    queue: ProductionQueue;
+    tasks: ReadonlyArray<TaskState>;
+    isActive: boolean;
+    isWaiting: boolean;
+    currentTaskFinishTimestamp: number;
+    currentTaskFinishSeconds: number;
+    firstTask: ResourceLineState;
+    allTasks: ResourceLineState;
+    taskCount: number;
+}
+
 interface VillageWarehouseState {
     resources: Resources;
     capacity: Resources;
@@ -60,18 +72,6 @@ interface ResourceLineState {
     active: boolean;
 }
 
-interface VillageProductionQueueState {
-    queue: ProductionQueue;
-    tasks: ReadonlyArray<TaskState>;
-    isActive: boolean;
-    isWaiting: boolean;
-    currentTaskFinishTimestamp: number;
-    currentTaskFinishSeconds: number;
-    firstTask: ResourceLineState;
-    allTasks: ResourceLineState;
-    taskCount: number;
-}
-
 interface VillageOwnState {
     /**
      * Village id
diff --git a/src/utils.ts b/src/utils.ts
index 461e854..96cfc24 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,4 +1,5 @@
 import * as URLParse from 'url-parse';
+import * as _ from 'underscore';
 
 export function sleep(ms: number) {
     return new Promise(resolve => setTimeout(resolve, ms));
@@ -67,20 +68,6 @@ export function elClassId(classes: string | undefined, prefix: string): number |
     return result;
 }
 
-export function* split(n: number, from: number = 2, to: number = 6) {
-    let c = n;
-    while (c > 0) {
-        const next = from + Math.floor(Math.random() * (to - from));
-        if (next < c) {
-            yield next;
-            c -= next;
-        } else {
-            yield c;
-            c = 0;
-        }
-    }
-}
-
 export function toNumber(value: any): number | undefined {
     const normalized = String(value)
         .replace('\u2212', '\u002d') // minus to hyphen-minus
@@ -119,3 +106,7 @@ export function markPage(text: string, version: string) {
             '</div>'
     );
 }
+
+export function first<T>(items: ReadonlyArray<T>): T | undefined {
+    return _.first(items);
+}