redefine project

src/model/counter.ts

@@ -0,0 +1,39 @@
+export class Counter {
+    static value: number;
+    min: number;
+    max: number;
+
+    constructor(min: number, max: number){
+        Counter.value = min;
+        this.min = min;
+        this.max = max;
+    }
+
+    increment(){
+        if(!this.isMax()){
+            Counter.value++;
+            return true;
+        }
+        return false;
+    }
+
+    decrement(){
+        if(!this.isMin()){
+            Counter.value--;
+            return true;
+        }
+        return false;
+    }
+
+    clear(){
+        Counter.value = 0;
+    }
+
+    private isMax(){
+        return this.max === Counter.value;
+    }
+
+    private isMin(){
+        return this.min === Counter.value;
+    }
+}

src/model/item.ts

@@ -0,0 +1,11 @@
+export class Item {
+    id: number;
+    name: string;
+    color: string;
+
+    constructor(id: number, name: string, color: string){
+        this.id = id;
+        this.name = name;
+        this.color = color;
+    }
+}