fix(core): update

ts/classes.limitedarray.ts

@@ -0,0 +1,42 @@
+import * as plugins from './classes.plugins.js';
+
+export class LimitedArray<T> {
+  array: T[] = [];
+  arrayLimit: number;
+  constructor(limitArg: number) {
+    this.arrayLimit = limitArg;
+  }
+
+  addOne(objectArg: T) {
+    this.array.unshift(objectArg);
+    if (this.array.length > this.arrayLimit) {
+      this.array.length = this.arrayLimit;
+    }
+  }
+
+  addMany(objectArrayArg: T[]) {
+    for (let objectArg of objectArrayArg) {
+      this.addOne(objectArg);
+    }
+  }
+
+  setLimit(limitArg: number) {
+    this.arrayLimit = limitArg;
+    if (this.array.length > this.arrayLimit) {
+      this.array.length = this.arrayLimit;
+    }
+  }
+
+  getAverage(): number {
+    if (typeof this.array[0] === 'number') {
+      let sum = 0;
+      for (let localNumber of this.array) {
+        let localNumberAny: any = localNumber;
+        sum = sum + localNumberAny;
+      }
+      return sum / this.array.length;
+    } else {
+      return null;
+    }
+  }
+}