Added Statistics calculation

Statistics now show calculated values

node_modules/@mui/x-internals/store/Store.js

@@ -0,0 +1,65 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Store = void 0;
+var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
+/* eslint-disable no-cond-assign */
+
+class Store {
+  // HACK: `any` fixes adding listeners that accept partial state.
+
+  // Internal state to handle recursive `setState()` calls
+
+  static create(state) {
+    return new Store(state);
+  }
+  constructor(state) {
+    this.state = state;
+    this.listeners = new Set();
+    this.updateTick = 0;
+  }
+  subscribe = fn => {
+    this.listeners.add(fn);
+    return () => {
+      this.listeners.delete(fn);
+    };
+  };
+  getSnapshot = () => {
+    return this.state;
+  };
+  setState(newState) {
+    this.state = newState;
+    this.updateTick += 1;
+    const currentTick = this.updateTick;
+    const it = this.listeners.values();
+    let result;
+    while (result = it.next(), !result.done) {
+      if (currentTick !== this.updateTick) {
+        // If the tick has changed, a recursive `setState` call has been made,
+        // and it has already notified all listeners.
+        return;
+      }
+      const listener = result.value;
+      listener(newState);
+    }
+  }
+  update(changes) {
+    for (const key in changes) {
+      if (!Object.is(this.state[key], changes[key])) {
+        this.setState((0, _extends2.default)({}, this.state, changes));
+        return;
+      }
+    }
+  }
+  set(key, value) {
+    if (!Object.is(this.state[key], value)) {
+      this.setState((0, _extends2.default)({}, this.state, {
+        [key]: value
+      }));
+    }
+  }
+}
+exports.Store = Store;