diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index 751bf62..55ec17b 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -41,7 +41,7 @@ module.exports = {
 
     // React
     {
-      files: ['**/*.{js,jsx,ts,tsx}'],
+      files: ['**/*.{jsx,tsx}'],
       plugins: ['react', 'jsx-a11y'],
       extends: [
         'plugin:react/recommended',
diff --git a/app/ecs-components/wielder.js b/app/ecs-components/wielder.js
index c867124..57c2ca4 100644
--- a/app/ecs-components/wielder.js
+++ b/app/ecs-components/wielder.js
@@ -1,69 +1,92 @@
 import Component from '@/ecs/component.js';
+import Script from '@/util/script.js';
 
 export default class Wielder extends Component {
   instanceFromSchema() {
+    const {ecs} = this;
     const Instance = super.instanceFromSchema();
-    const Component = this;
-    Instance.prototype.activeItem = async function () {
-      const {Inventory, Wielder} = Component.ecs.get(this.entity);
-      return Inventory.item(Wielder.activeSlot + 1);
-    };
-    Instance.prototype.project = function(position, projection) {
-      const {TileLayers: {layers: [layer]}} = Component.ecs.get(1);
-      const {Direction: {direction}} = Component.ecs.get(this.entity);
-      let startX = position.x;
-      let startY = position.y;
-      switch (direction) {
-        case 0:
-          startX += projection.distance[1];
-          startY -= projection.distance[0];
-          break;
-        case 1:
-          startX += projection.distance[0];
-          startY += projection.distance[1];
-          break;
-        case 2:
-          startX -= projection.distance[1];
-          startY += projection.distance[0];
-          break;
-        case 3:
-          startX -= projection.distance[0];
-          startY -= projection.distance[1];
-          break;
+    return class WielderInstance extends Instance {
+      async activeItem() {
+        const {Inventory, Wielder} = ecs.get(this.entity);
+        return Inventory.item(Wielder.activeSlot + 1);
       }
-      const projected = [];
-      for (const row in projection.grid) {
-        const columns = projection.grid[row];
-        for (const column in columns) {
-          const targeted = projection.grid[row][column];
-          if (targeted) {
-            let axe;
-            switch (direction) {
-              case 0:
-                axe = [column, row];
-                break;
-              case 1:
-                axe = [-row, column];
-                break;
-              case 2:
-                axe = [-column, -row];
-                break;
-              case 3:
-                axe = [row, -column];
-                break;
+      project(position, projection) {
+        const {TileLayers: {layers: [layer]}} = ecs.get(1);
+        const {Direction: {direction}} = ecs.get(this.entity);
+        let startX = position.x;
+        let startY = position.y;
+        switch (direction) {
+          case 0:
+            startX += projection.distance[1];
+            startY -= projection.distance[0];
+            break;
+          case 1:
+            startX += projection.distance[0];
+            startY += projection.distance[1];
+            break;
+          case 2:
+            startX -= projection.distance[1];
+            startY += projection.distance[0];
+            break;
+          case 3:
+            startX -= projection.distance[0];
+            startY -= projection.distance[1];
+            break;
+        }
+        const projected = [];
+        for (const row in projection.grid) {
+          const columns = projection.grid[row];
+          for (const column in columns) {
+            const targeted = projection.grid[row][column];
+            if (targeted) {
+              let axe;
+              switch (direction) {
+                case 0:
+                  axe = [column, row];
+                  break;
+                case 1:
+                  axe = [-row, column];
+                  break;
+                case 2:
+                  axe = [-column, -row];
+                  break;
+                case 3:
+                  axe = [row, -column];
+                  break;
+              }
+              const x = startX + parseInt(axe[0]);
+              const y = startY + parseInt(axe[1]);
+              if (x < 0 || y < 0 || x >= layer.area.x || y >= layer.area.y) {
+                continue;
+              }
+              projected.push({x, y});
             }
-            const x = startX + parseInt(axe[0]);
-            const y = startY + parseInt(axe[1]);
-            if (x < 0 || y < 0 || x >= layer.area.x || y >= layer.area.y) {
-              continue;
-            }
-            projected.push({x, y});
           }
         }
+        return projected;
+      }
+      async useActiveItem(state) {
+        const entity = ecs.get(this.entity);
+        const {Ticking} = entity;
+        const activeItem = await this.activeItem();
+        if (activeItem) {
+          ecs.readAsset([activeItem.source, state ? 'start.js' : 'stop.js'].join('/'))
+            .then((script) => (script.ok ? script.text() : ''))
+            .then((code) => {
+              if (code) {
+                const context = {
+                  ecs,
+                  item: activeItem,
+                  wielder: entity,
+                };
+                Ticking.addTickingPromise(Script.tickingPromise(code, context));
+              }
+            });
+        }
+
+
       }
-      return projected;
     }
-    return Instance;
   }
   static properties = {
     activeSlot: {type: 'uint16'},
diff --git a/app/engine.js b/app/engine.js
index 41b6535..5c86e63 100644
--- a/app/engine.js
+++ b/app/engine.js
@@ -5,7 +5,6 @@ import Ecs from '@/ecs/ecs.js';
 import Components from '@/ecs-components/index.js';
 import Systems from '@/ecs-systems/index.js';
 import {decode, encode} from '@/packets/index.js';
-import Script from '@/util/script.js';
 
 function join(...parts) {
   return parts.join('/');
@@ -48,7 +47,7 @@ export default class Engine {
       entity,
       payload,
     ] of this.incomingActions) {
-      const {Controlled, Inventory, Ticking, Wielder} = entity;
+      const {Controlled, Inventory, Wielder} = entity;
       switch (payload.type) {
         case 'changeSlot': {
           if (!Controlled.locked) {
@@ -71,25 +70,7 @@ export default class Engine {
         }
         case 'use': {
           if (!Controlled.locked) {
-            Inventory.item(Wielder.activeSlot + 1).then(async (item) => {
-              if (item) {
-                const code = await(
-                  this.server.readAsset([
-                    item.source,
-                    payload.value ? 'start.js' : 'stop.js',
-                  ].join('/'))
-                    .then((script) => (script.ok ? script.text() : ''))
-                );
-                if (code) {
-                  const context = {
-                    ecs: this.ecses[entity.Ecs.path],
-                    item,
-                    wielder: entity,
-                  };
-                  Ticking.addTickingPromise(Script.tickingPromise(code, context));
-                }
-              }
-            });
+            Wielder.useActiveItem(payload.value);
           }
           break;
         }