diff --git a/src/components/excel/Excel.ts b/src/components/excel/Excel.ts
index 4c30f9a..2e72cd2 100644
--- a/src/components/excel/Excel.ts
+++ b/src/components/excel/Excel.ts
@@ -5,9 +5,10 @@ import { Store } from 'core/store/Store';
 import { StoreSubscriber } from 'core/StoreSubscriber';
 import { updateOpenDate } from 'redux/action-creators';
 
+// TODO type for components array
 interface ExcelOptionsType {
   components: any[],
-  store: any,
+  store: Store,
 }
 
 type BaseComponentOption = {
diff --git a/src/components/header/Header.ts b/src/components/header/Header.ts
index a291671..0cdb016 100644
--- a/src/components/header/Header.ts
+++ b/src/components/header/Header.ts
@@ -17,10 +17,11 @@ export class Header extends ExcelComponent {
   }
 
   toHTML(): string {
-    const { title } = this.store.getState();
+    const { title, id } = this.store.getState();
 
     return `
     <input type="text" class="input" value="${title}">
+    <div>ID: <strong>${id}</strong></div>
 
     <div>
       <div class="button" data-button="delete-table">
@@ -33,7 +34,7 @@ export class Header extends ExcelComponent {
   }
 
   onInput(event: InputEvent) {
-    const $target = $(event.target as HTMLInputElement);
+    const $target = $(event.target);
 
     this.dispatchToStore(actions.changeTitle($target.text));
   }
diff --git a/src/components/table/Table.ts b/src/components/table/Table.ts
index a3c0bd1..88b1ddb 100644
--- a/src/components/table/Table.ts
+++ b/src/components/table/Table.ts
@@ -15,6 +15,7 @@ export class Table extends ExcelComponent {
 
   private selection: TableSelection;
   private isMouseDowned: boolean;
+  private tableResizing = false;
   public tableSize = {
     row: 50,
     col: 24,
@@ -92,6 +93,8 @@ export class Table extends ExcelComponent {
       const $cell = this.$root.find(`[data-id="${cellId}"]`);
       const styles = tableStyles[cellId];
 
+      if (!$cell.isExist) return;
+
       $cell.text = parse(tableContent[cellId]) || '';
       $cell.setData('value', tableContent[cellId]);
       $cell.css(styles);
@@ -116,8 +119,11 @@ export class Table extends ExcelComponent {
 
   async resizeTable(event: MouseEvent) {
     try {
+      if (!$(event.target).closest('[data-resize]').isExist) return;
+      this.tableResizing = true;
       const resizeData = await resizeHandler(this.$root, event);
-      this.dispatchToStore(actions.tableResize({ resizeData }));
+      this.dispatchToStore(actions.tableResize(resizeData));
+      this.tableResizing = false;
     } catch (e) {
       console.warn('Resize error', e.message);
     }
@@ -133,7 +139,7 @@ export class Table extends ExcelComponent {
     }));
   };
 
-  updateCurrentStyles = (style: CSSStyleRule) => {
+  updateCurrentStyles = (style: CSSStyleDeclaration) => {
     this.selection.applyStyle(style);
     this.dispatchToStore(actions.applyStyle({
       value: style,
@@ -163,7 +169,7 @@ export class Table extends ExcelComponent {
   }
 
   onMouseover(event: MouseEvent) {
-    this.isMouseDowned && selectHandler(event, this.selection);
+    this.isMouseDowned && !this.tableResizing && selectHandler(event, this.selection);
   }
 
   onMouseup() {
diff --git a/src/components/table/TableSelection.ts b/src/components/table/TableSelection.ts
index 2be8dfa..594b892 100644
--- a/src/components/table/TableSelection.ts
+++ b/src/components/table/TableSelection.ts
@@ -19,13 +19,17 @@ export class TableSelection {
 
   // TODO make a focus manager
   focusToCell($cell: Dom) {
-    const range = new Range();
-    const node = $cell.$el;
+    try {
+      const range = new Range();
+      const node = $cell.$el;
 
-    range.setStartAfter(node.childNodes[0]);
+      range.setStartAfter(node.childNodes[0]);
 
-    window.getSelection()?.removeAllRanges();
-    window.getSelection()?.addRange(range);
+      window.getSelection()?.removeAllRanges();
+      window.getSelection()?.addRange(range);
+    } catch (e) {
+      console.log('Error focus', e.message);
+    }
   }
 
   select($el: Dom) {
@@ -83,7 +87,7 @@ export class TableSelection {
     $cell.addClass(TableSelection.selectedClassName);
   }
 
-  applyStyle(style: CSSStyleRule) {
+  applyStyle(style: CSSStyleDeclaration) {
     this.group.forEach(el => el.css(style));
   }
 }
diff --git a/src/components/table/handlers/table.resize.ts b/src/components/table/handlers/table.resize.ts
index 9e88ed6..3660e5d 100644
--- a/src/components/table/handlers/table.resize.ts
+++ b/src/components/table/handlers/table.resize.ts
@@ -1,8 +1,7 @@
 import { startCellId } from 'components/table/table.functions';
 import { $, Dom } from 'core/Dom';
 
-type CustomElementType = Element & { css: any };
-type ResizeReturnDataType = { value: number, id: string, type: string };
+export type ResizeReturnDataType = { value: number, id: string, type: string };
 
 export function resizeHandler($root: Dom, event: MouseEvent) {
   return new Promise<ResizeReturnDataType>(res => {
@@ -18,13 +17,7 @@ export function resizeHandler($root: Dom, event: MouseEvent) {
 
     let delta: number;
 
-    (Element.prototype as CustomElementType).css = function (styles: any) {
-      Object.keys(styles).forEach((key: any) => {
-        this.style[key] = styles[key];
-      });
-    };
-
-    $resizer.css({ opacity: 1 });
+    $resizer.css({ opacity: '1' });
 
     document.onmousemove = e => {
       document.body.style.userSelect = 'none';
@@ -84,7 +77,7 @@ export function resizeHandler($root: Dom, event: MouseEvent) {
 
       res({ value, id, type });
 
-      $resizer.css({ opacity: 0, bottom: 0, right: 0 });
+      $resizer.css({ opacity: '0', bottom: '0', right: '0' });
     };
   });
 }
diff --git a/src/components/table/handlers/table.select.handler.ts b/src/components/table/handlers/table.select.handler.ts
index a1fb57e..8511014 100644
--- a/src/components/table/handlers/table.select.handler.ts
+++ b/src/components/table/handlers/table.select.handler.ts
@@ -26,7 +26,7 @@ export function selectHandler(event: MouseEvent | KeyboardEvent, selection: Tabl
   callback?.();
 
   function onMouseDownHandler() {
-    const target = $(event.target as HTMLElement);
+    const target = $(event.target);
 
     if (isCell(event)) {
       if (event.shiftKey) selection.selectTo(target);
@@ -44,8 +44,8 @@ export function selectHandler(event: MouseEvent | KeyboardEvent, selection: Tabl
         selection.selectGroupies($cells);
       } else if (col.$el && !resizer.$el) {
         const colNumber = col.data.col;
-        const colls = selection.rootTable.$root.findAll(`[data-col="${colNumber}"]`);
-        const $cells = Array.from(colls).filter(el => el !== col.$el).map(el => $(el as HTMLElement));
+        const columns = selection.rootTable.$root.findAll(`[data-col="${colNumber}"]`);
+        const $cells = Array.from(columns).filter(el => el !== col.$el).map(el => $(el as HTMLElement));
 
         selection.selectGroupies($cells);
       }
@@ -109,6 +109,7 @@ export function selectHandler(event: MouseEvent | KeyboardEvent, selection: Tabl
 
   function onMouseOverHandler() {
     if (selection.current.$el) {
+      // TODO find event type
       selection.selectTo($((event as any).toElement));
     }
   }
diff --git a/src/components/table/table.functions.ts b/src/components/table/table.functions.ts
index 66a8104..e9824be 100644
--- a/src/components/table/table.functions.ts
+++ b/src/components/table/table.functions.ts
@@ -1,7 +1,7 @@
 import { $ } from 'core/Dom';
 
 export function isCell(event: Event): boolean {
-  return $(event.target as HTMLElement).data.type === 'cell';
+  return $(event.target).data.type === 'cell';
 }
 
 export function getParamsFromCellId(cellId: string) {
diff --git a/src/components/toolbar/Toolbar.ts b/src/components/toolbar/Toolbar.ts
index b972ea7..44e6e62 100644
--- a/src/components/toolbar/Toolbar.ts
+++ b/src/components/toolbar/Toolbar.ts
@@ -3,6 +3,7 @@ import { $, Dom } from 'core/Dom';
 import { ExcelComponentState } from 'core/ExcelComponentState';
 import { ComponentOptionsType } from 'core/ExcelComponent';
 import { createToolbar } from 'components/toolbar/toolbar.template';
+import { StateType } from 'redux/types';
 import { fontSizes, initialStyleState } from 'src/constants';
 
 export class Toolbar extends ExcelComponentState {
@@ -38,15 +39,17 @@ export class Toolbar extends ExcelComponentState {
     return this.template;
   }
 
-  storeChanged(args?: any) {
+  storeChanged(args: StateType) {
+    if (!args) return;
+
     this.setComponentState(args.currentStyles);
   }
 
   onClick(event: MouseEvent) {
-    //TODO refactor, make style handler
-    const target = $(event.target as HTMLElement);
+    // TODO refactor, make style handler
+    const target = $(event.target);
 
-    if (target.closest('[data-addbtn]')) {
+    if (target.closest('[data-addbtn]').isExist) {
       this.$emitEventToObserver('toolbar:add-row');
       return;
     }
@@ -92,6 +95,7 @@ export class Toolbar extends ExcelComponentState {
     }
   }
 
+  // TODO find EventType
   onChange(e: any) {
     const target = $(e.target);
     let value = '';
diff --git a/src/constants.ts b/src/constants.ts
index 2ae2a16..e6dbb8b 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -36,7 +36,8 @@ export const initialState: StateType = {
   title: 'New excel table',
   openDate: Date.now(),
   currentStyles: initialStyleState,
-  currentText: 'huy',
+  currentText: 'initial text',
+  id: '0',
 };
 
 export function getNormalizeInitialState(params: string): StateType {
diff --git a/src/core/Clients.ts b/src/core/Clients.ts
index 70e102a..ca9a73c 100644
--- a/src/core/Clients.ts
+++ b/src/core/Clients.ts
@@ -4,12 +4,12 @@ import { StateType } from 'redux/types';
 import { getNormalizeInitialState } from 'src/constants';
 
 export interface ClientDataType {
-  save: (state: StateType) => Promise<any>;
-  get: () => Promise<any>;
+  save: (state: StateType) => Promise<void>;
+  get: () => Promise<StateType>;
 }
 
 export class LocalStorageClient implements ClientDataType {
-  private name: string;
+  private readonly name: string;
 
   constructor(name: string) {
     this.name = name;
@@ -20,7 +20,7 @@ export class LocalStorageClient implements ClientDataType {
     return Promise.resolve();
   }
 
-  get() {
+  get(): Promise<StateType> {
     return new Promise(resolve => {
       setTimeout(() => {
         resolve(getNormalizeInitialState(this.name));
diff --git a/src/core/Dom.ts b/src/core/Dom.ts
index 5209038..ab1b9a6 100644
--- a/src/core/Dom.ts
+++ b/src/core/Dom.ts
@@ -1,7 +1,7 @@
-import { ToolbarStateType } from 'components/toolbar/toolbar-types';
+import { CallbackType } from 'redux/types';
 import { initialStyleState } from 'src/constants';
 
-export type SelectorType = string | HTMLElement;
+export type SelectorType = string | HTMLElement | EventTarget | null;
 
 export interface DomClass {
   html(html?: string): string | DomClass;
@@ -19,7 +19,7 @@ export class Dom implements DomClass {
       if (!elementFromDOM) throw new Error(`Can't find element with "${selector}" selector`);
       else this.$el = elementFromDOM as HTMLElement;
     } else {
-      this.$el = selector;
+      this.$el = selector as HTMLElement;
     }
   }
 
@@ -30,6 +30,8 @@ export class Dom implements DomClass {
   }
 
   set text(text: string) {
+    if (!this.$el) return;
+
     if (!text) this.$el.textContent = '';
     this.$el.textContent = text;
   }
@@ -46,22 +48,22 @@ export class Dom implements DomClass {
   }
 
   // FIXME: any
-  append(node: any) {
+  append(node: HTMLElement | Dom) {
     let child = node;
 
     if (node instanceof Dom) child = node.$el;
 
-    if (this.$el.append) this.$el.append(child);
-    else this.$el.appendChild(child);
+    if (this.$el.append) this.$el.append(child as HTMLElement);
+    else this.$el.appendChild(child as HTMLElement);
 
     return this;
   }
 
-  on(eventType: string, callback: any) {
+  on(eventType: string, callback: CallbackType) {
     this.$el.addEventListener(eventType, callback);
   }
 
-  off(eventType: string, callback: any) {
+  off(eventType: string, callback: CallbackType) {
     this.$el.removeEventListener(eventType, callback);
   }
 
@@ -93,11 +95,11 @@ export class Dom implements DomClass {
     return this.$el.querySelectorAll(selector);
   }
 
-  css(styles: any) {
+  css(styles: Partial<CSSStyleDeclaration>) {
     if (!styles) return;
 
     Object.keys(styles)?.forEach((key: any) => {
-      this.$el.style[key] = styles[key];
+      this.$el.style[key] = styles[key] as string;
     });
   }
 
@@ -113,11 +115,12 @@ export class Dom implements DomClass {
     this.$el?.classList.remove(className);
   }
 
-  getStyles(styles: any[]) {
+  getStyles(styles: string[]): Partial<CSSStyleDeclaration> {
     return styles.reduce((res, s) => {
       // replace all need if case style value have 2 or more word, this.$el.style[s] return ""word value""
       // for example font-family
-      res[s] = this.$el.style[s].replaceAll('"', '') || initialStyleState[s as keyof ToolbarStateType];
+      // @ts-ignore
+      res[s] = this.$el.style[s].replaceAll('"', '') || initialStyleState[s];
       return res;
     }, {});
   }
@@ -130,6 +133,10 @@ export class Dom implements DomClass {
 
     return this.$el.getAttribute(name);
   }
+
+  get isExist(): boolean {
+    return !!this.$el;
+  }
 }
 
 export function $(selector: SelectorType) {
diff --git a/src/core/DomListener.ts b/src/core/DomListener.ts
index 36e3ac6..78f6dc4 100644
--- a/src/core/DomListener.ts
+++ b/src/core/DomListener.ts
@@ -1,9 +1,12 @@
 import { Dom } from 'core/Dom';
-import { capitalize } from 'core/utils';
+import { getMethodNameByEventName } from 'core/utils';
+
+// TODO fix types
 
 export class DomListener {
   $root: Dom;
   eventListeners: string[];
+  protected name: string;
 
   constructor($root: Dom, eventNames: string[]) {
     if (!$root) throw new Error('Не передали корневой элемент');
@@ -16,26 +19,22 @@ export class DomListener {
     if (!this.eventListeners) return;
 
     this.eventListeners.forEach((listener: string) => {
-      const method: any = getMethodName(listener);
-      // @ts-ignore FIXME:
+      const method = getMethodNameByEventName(listener);
+      // @ts-ignore
       this[method] = this[method]?.bind(this);
-      // @ts-ignore FIXME:
+      // @ts-ignore
       if (!this[method]) throw new Error(`Отсутствует метод ${method} в компоненте ${this?.name}`);
-      // @ts-ignore FIXME:
+
+      // @ts-ignore
       this.$root.on(listener, this[method]);
     });
   }
 
   removeDOMListeners() {
     this.eventListeners.forEach(listener => {
-      // @ts-ignore FIXME:
-      const method: any = getMethodName(listener);
-      // @ts-ignore FIXME:
+      const method = getMethodNameByEventName(listener);
+      // @ts-ignore
       this.$root.off(listener, this[method]);
     });
   }
 }
-
-function getMethodName(eventName: string): string {
-  return `on${capitalize(eventName)}`;
-}
diff --git a/src/core/ExcelComponent.ts b/src/core/ExcelComponent.ts
index c581ab1..70f3912 100644
--- a/src/core/ExcelComponent.ts
+++ b/src/core/ExcelComponent.ts
@@ -1,4 +1,4 @@
-import { ActionType, StateType } from 'redux/types';
+import { ActionType, CallbackType, StateType } from 'redux/types';
 import { Dom } from 'core/Dom';
 import { DomListener } from 'core/DomListener';
 import { Observer } from 'core/Observer';
@@ -13,13 +13,12 @@ export type ComponentOptionsType = {
 };
 
 export abstract class ExcelComponent extends DomListener {
-  private name: string;
   private observer: Observer;
   public store: Store;
   private subscribe: (keyof StateType)[];
-  private unsubscribers: ((args?: any) => any)[];
+  private unsubscribers: CallbackType[];
 
-  constructor($root: Dom, options: ComponentOptionsType) {
+  protected constructor($root: Dom, options: ComponentOptionsType) {
     super($root, options.eventListeners);
     this.name = options.name;
     this.observer = options.observer;
@@ -51,7 +50,7 @@ export abstract class ExcelComponent extends DomListener {
     this.store?.dispatchToStore(action);
   }
 
-  storeChanged(args?: any) {
+  storeChanged(args: StateType) {
     console.log('CHANGE STORE: ', args, ' in component ', this.name);
   }
 
diff --git a/src/core/ExcelComponentState.ts b/src/core/ExcelComponentState.ts
index 0ca96ee..026cc6e 100644
--- a/src/core/ExcelComponentState.ts
+++ b/src/core/ExcelComponentState.ts
@@ -21,6 +21,8 @@ export abstract class ExcelComponentState extends ExcelComponent {
   }
 
   setComponentState(newState: ExcelComponentStateType) {
+    if (!newState) return;
+
     this.componentState = { ...this.componentState, ...newState };
     this.$root.html(this.template);
   }
diff --git a/src/core/Observer.ts b/src/core/Observer.ts
index 3b46c30..d110fb5 100644
--- a/src/core/Observer.ts
+++ b/src/core/Observer.ts
@@ -1,13 +1,15 @@
+import { CallbackType } from 'redux/types';
+
 export class Observer {
-  private listeners: {
-    [k: string]: Array<(args?: any) => any>
+  private readonly listeners: {
+    [k: string]: Array<CallbackType>
   };
 
   constructor() {
     this.listeners = {};
   }
 
-  subscribe(eventName: string, callback: (args?: any) => any) {
+  subscribe(eventName: string, callback: CallbackType) {
     this.listeners[eventName] = this.listeners[eventName] || [];
     this.listeners[eventName].push(callback);
 
diff --git a/src/core/StoreSubscriber.ts b/src/core/StoreSubscriber.ts
index 271563c..9fce204 100644
--- a/src/core/StoreSubscriber.ts
+++ b/src/core/StoreSubscriber.ts
@@ -1,9 +1,9 @@
-import { StateType } from 'redux/types';
+import { StateType, SubscribeType } from 'redux/types';
 import { Store } from 'core/store/Store';
 import { isEqual } from 'core/utils';
 
 export class StoreSubscriber {
-  sub: any;
+  sub: SubscribeType | null;
   currentState: StateType;
 
   constructor(private store: Store) {
@@ -31,6 +31,6 @@ export class StoreSubscriber {
   }
 
   unsubscribeFromStore() {
-    this.sub.unsubscribe();
+    this.sub?.unsubscribe();
   }
 }
diff --git a/src/core/routes/Router.ts b/src/core/routes/Router.ts
index 3274245..095e1e7 100644
--- a/src/core/routes/Router.ts
+++ b/src/core/routes/Router.ts
@@ -13,7 +13,7 @@ export class Router {
   private $placeholder: Dom;
   private routes: RoutesType;
   private page: DashboardPage | ExcelPage;
-  private loader: Dom;
+  private readonly loader: Dom;
 
   constructor(selector: SelectorType, routes: RoutesType) {
     if (!selector) throw new Error('Selector not provided');
diff --git a/src/core/store/Store.ts b/src/core/store/Store.ts
index 7849fe5..3e55293 100644
--- a/src/core/store/Store.ts
+++ b/src/core/store/Store.ts
@@ -1,8 +1,8 @@
-import { ActionType, ReducerType, StateType, SubscribeType } from 'redux/types';
+import { ActionType, CallbackType, ReducerType, StateType, SubscribeType } from 'redux/types';
 
 export class Store {
-  state: StateType;
-  listeners: ((args?: any) => void)[];
+  state: StateType | null;
+  listeners: CallbackType[];
 
   constructor(private reducer: ReducerType, initialState: StateType) {
     this.state = reducer({ ...initialState }, { type: '__INIT__' });
@@ -20,6 +20,8 @@ export class Store {
   }
 
   dispatchToStore(action: ActionType) {
+    if (!this.state || !action.type) return;
+
     this.state = this.reducer(this.state, action);
     this.listeners.forEach(listener => listener(this.state));
   }
diff --git a/src/core/utils.ts b/src/core/utils.ts
index 5cfeebf..d2b9f0d 100644
--- a/src/core/utils.ts
+++ b/src/core/utils.ts
@@ -1,3 +1,4 @@
+import { CallbackType, StateType } from 'redux/types';
 import { fontSizes } from 'src/constants';
 
 export function capitalize(string: string): string {
@@ -6,7 +7,7 @@ export function capitalize(string: string): string {
   return string.charAt(0).toUpperCase() + string.slice(1);
 }
 
-export function storage(key: string, data: any = null): any {
+export function storage(key: string, data: StateType | null = null): any {
   if (!data) {
     const localData = localStorage.getItem(key);
     return localData ? JSON.parse(localData) : false;
@@ -25,7 +26,7 @@ export function isEqual(a: any, b: any) {
   return a === b;
 }
 
-export function debounce(fn: (fnArgs?: any) => void, wait: number) {
+export function debounce(fn: CallbackType, wait: number) {
   let timeout: NodeJS.Timeout;
 
   return function (...args: any) {
@@ -61,3 +62,7 @@ export function isSmallestFontSize(fontSize?: string): number | boolean {
   if (!fontSize) return false;
   return fontSizes.findIndex(el => el === fontSize) === 0;
 }
+
+export function getMethodNameByEventName(eventName: string): string {
+  return `on${capitalize(eventName)}`;
+}
diff --git a/src/pages/DashboardPage.ts b/src/pages/DashboardPage.ts
index a29a345..a71e543 100644
--- a/src/pages/DashboardPage.ts
+++ b/src/pages/DashboardPage.ts
@@ -1,9 +1,9 @@
-import { $ } from 'core/Dom';
+import { $, Dom } from 'core/Dom';
 import { AbstractPage } from 'pages/AbstractPage';
 import { storage } from 'core/utils';
 
 export class DashboardPage extends AbstractPage {
-  getRoot() {
+  getRoot(): Dom {
     const id = Date.now().toString();
 
     return $.create('div', 'db').html(
@@ -24,7 +24,7 @@ export class DashboardPage extends AbstractPage {
   }
 }
 
-function toHtml(key: string) {
+function toHtml(key: string): string {
   const params = +key.split(':')[1];
   const state = storage(key);
   const link = `#excel/${params}`;
@@ -38,7 +38,7 @@ function toHtml(key: string) {
   `;
 }
 
-export function createRecordsTable() {
+export function createRecordsTable(): string {
   const keys = getAllKeys();
   if (!keys.length) return '<p>Пока не создали ни одной таблицы</p>';
 
diff --git a/src/pages/ExcelPage.ts b/src/pages/ExcelPage.ts
index 03e466b..c59964f 100644
--- a/src/pages/ExcelPage.ts
+++ b/src/pages/ExcelPage.ts
@@ -19,7 +19,7 @@ export class ExcelPage extends AbstractPage {
   private storeSub: SubscribeType | null;
   private processor: StateProcessor;
 
-  constructor(props: any) {
+  constructor(props: string[]) {
     super(props);
 
     this.storeSub = null;
diff --git a/src/redux/action-creators.ts b/src/redux/action-creators.ts
index c307e1e..0d5d16e 100644
--- a/src/redux/action-creators.ts
+++ b/src/redux/action-creators.ts
@@ -1,3 +1,4 @@
+import { ResizeReturnDataType } from 'components/table/handlers/table.resize';
 import { ActionType } from 'redux/types';
 import {
   CHANGE_TEXT,
@@ -9,42 +10,42 @@ import {
   UPDATE_DATE, CHANGE_CURRENT_TEXT,
 } from 'redux/action-constants';
 
-export function tableResize(resizeData: any) {
+export function tableResize(resizeData: ResizeReturnDataType): ActionType {
   return {
     type: TABLE_RESIZE,
-    ...resizeData,
+    resizeData,
   };
 }
 
-export function changeText(data: { text: string, id: string }) {
+export function changeText(data: { text: string, id: string }): ActionType {
   return {
     type: CHANGE_TEXT,
     data,
   };
 }
 
-export function changeCurrentStyles(data: any) {
+export function changeCurrentStyles(data: Partial<CSSStyleDeclaration>): ActionType {
   return {
     type: CHANGE_STYLES,
     data,
   };
 }
 
-export function applyStyle(data: { ids: (string | undefined)[], value: CSSStyleRule }) {
+export function applyStyle(data: { ids: (string | undefined)[], value: CSSStyleDeclaration }): ActionType {
   return {
     type: APPLY_STYLES,
     data,
   };
 }
 
-export function changeTitle(data: string) {
+export function changeTitle(data: string): ActionType {
   return {
     type: CHANGE_TITLE,
     data,
   };
 }
 
-export function deleteTable(data: string) {
+export function deleteTable(data: string): ActionType {
   return {
     type: DELETE_TABLE,
     data,
diff --git a/src/redux/rootReducer.ts b/src/redux/rootReducer.ts
index 6d54d7c..87ee050 100644
--- a/src/redux/rootReducer.ts
+++ b/src/redux/rootReducer.ts
@@ -12,6 +12,7 @@ import {
 } from 'redux/action-constants';
 
 export function rootReducer(state: StateType, action: ActionType) {
+// export const rootReducer: ReducerType = function (state: StateType, action: ActionType) {
   switch (action.type) {
     case TABLE_RESIZE: {
       const newState: StateType = { ...state };
diff --git a/src/redux/types.d.ts b/src/redux/types.d.ts
index 7dadd6d..f9c1d34 100644
--- a/src/redux/types.d.ts
+++ b/src/redux/types.d.ts
@@ -10,15 +10,17 @@ export type StateType = {
   rowState: { [k: number]: number };
   currentStyles: ToolbarStateType;
   dataState: { [k: string]: string };
-  id?: string;
+  id: string;
   openDate: number;
   stylesState: { [k: string]: ToolbarStateType };
   title: string;
   currentText: string;
 };
 
-export type ReducerType = (state: StateType, action: ActionType) => StateType;
+export type ReducerType = (state: StateType, action: ActionType) => StateType | null;
 
 export type SubscribeType = {
   unsubscribe: () => void
 };
+
+export type CallbackType = (...args: any[]) => void;