diff --git a/src/index.html b/src/index.html
index e56f684..4bdacea 100644
--- a/src/index.html
+++ b/src/index.html
@@ -13,14 +13,15 @@
 
 
   <!-- Modules -->
+  <script src="modules/configuration.js"></script>
+  <script src="modules/utilities.js"></script>
+
   <script src="modules/floor.js"></script>
   <script src="modules/grid.js"></script>
   <script src="modules/agentController.js"></script>
   <script src="modules/agent.js"></script>
   <script src="modules/products.js"></script>
   <script src="modules/knowledge.js"></script>
-  <script src="modules/configuration.js"></script>
-  <script src="modules/utilities.js"></script>
   <script src="modules/shop.js"></script>
   
   <!-- Main script file -->
diff --git a/src/modules/knowledge.js b/src/modules/knowledge.js
index 6123506..7027b1f 100644
--- a/src/modules/knowledge.js
+++ b/src/modules/knowledge.js
@@ -1,7 +1,6 @@
-function flattenToUnique(array, view = x => x) {
+function flattenToUnique(array, view) {
 	return array.reduce((set, value) => {
 		const v = view(value)
-		console.log(v)
 		v && v.forEach(cat => set.add(cat))
 		return set
 	}, new Set())
@@ -61,6 +60,26 @@ class SemanticNetwork {
 
 class AgentSemanticNetwork extends SemanticNetwork {}
 
+function nearbyStorageUnitsCoords(gridX, gridY) {
+  function outsideOfStorageCenter(v) {
+    const { x, y, w, h } = StorageCenterLocation
+    return v.x <= x || v.x >= x + w || v.y <= y || v.y >= y + h
+  }
+  return (gridX % UnitsInGroupCount == 0
+    ? (gridY % 3 == 1
+      ? /* skrzyżowanie */[[-1, -1], [-1, 1], [1, -1], [1, 1]]
+      : /* korytarz góra-dół */[[-1, 0], [1, 0]])
+    : /* korytarz lewo-prawo */[[0, -1], [0, 1]])
+    .map(([xoff, yoff]) => ({ x: gridX + xoff, y: yGrid + yoff }))
+    .filter(outsideOfStorageCenter)
+}
+
+
+function nearbyStorageUnitsIndexes(gridX, gridY) {
+  return nearbyStorageUnitsCoords(gridX, gridY)
+    .map(({ x, y }) => x * UnitsCount + y * UnitsCount * RowsOfGroupsCount)
+}
+
 class Arrangement {
 	constructor() {
 		this.products = [...Array(UnitsCount)].map(() => ({
@@ -69,6 +88,11 @@ class Arrangement {
 			icon: ''
 		}))
 	}
+
+	nearbyProducts(gridX, gridY) {
+		return nearbyStorageUnitsIndexes(gridX, gridY)
+			.map(i => this.products[i])
+	}
 }
 
 class Knowledge {
diff --git a/src/modules/shop.js b/src/modules/shop.js
index 8b6fa9a..b7c5341 100644
--- a/src/modules/shop.js
+++ b/src/modules/shop.js
@@ -1,56 +1,6 @@
-/**
- * Zwraca koordynaty półek przy danym kafelku ścieżki
- * @param {number} gridX 
- * @param {number} gridY 
- * @returns {{x:number;y:number}[]} Koordynaty sąsiednich półek do kafelka
- */
-function nearbyStorageUnitsCoords(gridX, gridY) {
-  function outsideOfStorageCenter(v) {
-    const { x, y, w, h } = StorageCenterLocation
-    return v.x <= x || v.x >= x + w || v.y <= y || v.y >= y + h
-  }
-  return (gridX % UnitsInGroupCount == 0
-    ? (gridY % 3 == 1
-      ? /* skrzyżowanie */[[-1, -1], [-1, 1], [1, -1], [1, 1]]
-      : /* korytarz góra-dół */[[-1, 0], [1, 0]])
-    : /* korytarz lewo-prawo */[[0, -1], [0, 1]])
-    .map(([xoff, yoff]) => ({ x: gridX + xoff, y: yGrid + yoff }))
-    .filter(outsideOfStorageCenter)
-}
-
-/**
- * Zwraca indeksy półek przy danym kafelku ścieżki
- * @param {number} gridX 
- * @param {number} gridY 
- * @returns {{x:number;y:number}[]} Indeksy sąsiednich półek do kafelka
- */
-function nearbyStorageUnitsIndexes(gridX, gridY) {
-  return nearbyStorageUnitsCoords(gridX, gridY)
-    .map(({ x, y }) => x * UnitsCount + y * UnitsCount * RowsOfGroupsCount)
-}
-
-function ensureArray(maybeArray) {
-  return Array.isArray(maybeArray) ? maybeArray : []
-}
-
 class Shop {
-  constructor(semanticNetwork) {
-    this.semanticNetwork = semanticNetwork
-    this.products = [...Array(UnitsCount)].map(x => ({ name: '', count: 0 }))
-  }
-
-  /**
-   * Zwraca listę produktów w okolicy danego kafelka ścieżki
-   * @param {number} gridX 
-   * @param {number} gridY 
-   */
-  nearbyProducts(gridX, gridY) {
-    return nearbyStorageUnitsIndexes(gridX, gridY)
-      .map(i => this.productPlacement[i])
-  }
-
   productsSimilarityScore(name1, name2) {
-    const [ o1, o2 ] = [name1, name2].map(name => this.semanticNetwork.findByName(name))
+    const [ o1, o2 ] = [name1, name2].map(name => Knowledge.semanticNetwork.findByName(name))
     if (!o1 || !o2)
       throw new Error("names should be in semantic network!")
     
@@ -67,5 +17,3 @@ class Shop {
     return l <= Number.EPSILON ? c * 0.7 : l * 0.65 + c * 0.35 // TODO: maybe find better formula? needs testing
   }
 }
-
-const shop = new Shop(semanticNetwork)