finish version 1.0.0

package.json

@@ -31,6 +31,8 @@
     "jest": "^28.1.2",
     "jest-environment-jsdom": "^28.1.2",
     "mini-css-extract-plugin": "^2.6.0",
+    "postcss": "^8.4.14",
+    "postcss-loader": "^7.0.0",
     "sass": "^1.52.2",
     "sass-loader": "^13.0.0",
     "ssh2-sftp-client": "^5.3.2",
@@ -63,11 +65,17 @@
   },
   "homepage": "https://bitbucket.org/ksv741/excel-course#readme",
   "description": "",
-  "browserslist": "> 0.25%, not dead",
+  "browserslist": [
+    "last 2 version",
+    "> 1%",
+    "IE 9"
+  ],
   "module": "true",
   "dependencies": {
+    "autoprefixer": "^10.4.7",
     "element-closest": "^3.0.2",
-    "normalize.css": "^8.0.1"
+    "normalize.css": "^8.0.1",
+    "postcss-preset-env": "^7.7.2"
   },
   "jest": {
     "transform": {

src/components/Loader.ts

@@ -1,5 +1,6 @@
 import { $, Dom } from 'core/dom';
 
 export function Loader(): Dom {
-  return $.create('div', 'loader').html('<div class="loader"><div class="lds-circle"><div></div></div></div>');
+  return $.create('div', 'loader')
+    .html('<div class="loader"><div class="lds-circle"><div></div></div></div>');
 }

src/components/formula/Formula.ts

@@ -28,7 +28,7 @@ export class Formula extends ExcelComponent {
     this.formulaInput = this.$root.find('#formula-input');
 
     this.$on('table:select-cell', text => {
-      this.formulaInput.text = text;
+      this.formulaInput.text = text || '';
     });
   }
 
@@ -36,8 +36,11 @@ export class Formula extends ExcelComponent {
     this.formulaInput.text = currentText;
   }
 
-  onInput(event: Event) {
-    const text = (event.target as HTMLElement).textContent.trim();
+  onInput(event: InputEvent) {
+    const { target } = event;
+    if (!target) return;
+
+    const text = (target as HTMLElement).innerText.trim();
     this.$emit('formula:input', text);
   }
 

src/components/table/Table.ts

@@ -1,3 +1,4 @@
+import { startCellId } from 'components/table/table.functions';
 import * as actions from 'redux/actions';
 import { $, Dom } from 'core/dom';
 import { ExcelComponent } from 'core/ExcelComponent';
@@ -33,7 +34,7 @@ export class Table extends ExcelComponent {
   init() {
     super.init();
 
-    const $cell = this.$root.find('[data-id="0:0"]');
+    const $cell = this.$root.find(`[data-id="${startCellId}"]`);
     this.selection.select($cell);
 
     this.$emit('table:select-cell', $cell.data.value);
@@ -86,7 +87,6 @@ export class Table extends ExcelComponent {
     const tableState = this.store.getState();
     const tableContent = tableState?.dataState;
     const tableStyles = tableState?.stylesState;
-
     Object.keys(tableContent).forEach(cellId => {
       const $cell = this.$root.find(`[data-id="${cellId}"]`);
       const styles = tableStyles[cellId];
@@ -100,7 +100,7 @@ export class Table extends ExcelComponent {
   emitSelectCallback() {
     this.$emit('table:select-cell', this.selection.current.data.value);
 
-    const styles = this.selection.current?.getStyles(Object.keys(initialStyleState) as (keyof Partial<CSSStyleDeclaration>)[]);
+    const styles = this.selection.current?.getStyles(Object.keys(initialStyleState));
     this.$dispatch(changeCurrentStyles(styles));
   }
 
@@ -116,7 +116,7 @@ export class Table extends ExcelComponent {
   updateCurrentTextInStore(text: string) {
     this.$dispatch(actions.changeText({
       text,
-      id: this.selection.current.data.id,
+      id: this.selection.current.data.id || startCellId,
     }));
   }
 
@@ -130,6 +130,6 @@ export class Table extends ExcelComponent {
   }
 
   onInput(event: InputEvent) {
-    this.updateCurrentTextInStore((event.target as HTMLElement).textContent.trim());
+    this.updateCurrentTextInStore((event.target as HTMLElement).innerText.trim());
   }
 }

src/components/table/TableSelection.ts

@@ -1,5 +1,5 @@
 import { $, Dom } from 'core/dom';
-import { getParamsFromCellId } from 'components/table/table.functions';
+import { getParamsFromCellId, startCellId } from 'components/table/table.functions';
 
 export class TableSelection {
   static selectedClassName = 'selected';
@@ -8,7 +8,6 @@ export class TableSelection {
 
   constructor() {
     this.group = [];
-    this.current = null;
   }
 
   get selectedIds() {
@@ -42,8 +41,8 @@ export class TableSelection {
   }
 
   selectGroup($el: Dom) {
-    const startCellParams = getParamsFromCellId(this.current.data.id);
-    const selectedCellParams = getParamsFromCellId($el.data.id);
+    const startCellParams = getParamsFromCellId(this.current.data.id || startCellId);
+    const selectedCellParams = getParamsFromCellId($el.data.id || startCellId);
 
     const startCol = Math.min(startCellParams.col, selectedCellParams.col);
     const endCol = Math.max(startCellParams.col, selectedCellParams.col);

src/components/table/handlers/table.resize.ts

@@ -1,3 +1,4 @@
+import { startCellId } from 'components/table/table.functions';
 import { $, Dom } from 'core/dom';
 
 type CustomElementType = Element & { css: any };
@@ -57,17 +58,17 @@ export function resizeHandler($root: Dom, event: MouseEvent) {
     document.onmouseup = () => {
       document.onmousemove = null;
       document.onmouseup = null;
-      document.body.style.userSelect = null;
+      document.body.style.userSelect = '';
 
-      let value: number;
-      // let id: string;
+      let value = 0;
+      const id = $parent.data[type || ''] || startCellId;
 
       switch (type) {
         case 'col': {
           value = coords.width + delta;
 
           $parent.css({ width: `${value}px` });
-          allCols.forEach((el: CustomElementType) => el.css({ width: `${coords.width + delta}px` }));
+          allCols.forEach(el => $(el as HTMLElement).css({ width: `${coords.width + delta}px` }));
           break;
         }
 
@@ -78,10 +79,10 @@ export function resizeHandler($root: Dom, event: MouseEvent) {
           break;
         }
 
-        default: break;
+        default: return;
       }
 
-      res({ value, id: $parent.data[type], type });
+      res({ value, id, type });
 
       $resizer.css({ opacity: 0, bottom: 0, right: 0 });
     };

src/components/table/handlers/table.select.handler.ts

@@ -1,6 +1,6 @@
 import { $ } from 'core/dom';
 import { TableSelection } from 'components/table/TableSelection';
-import { getParamsFromCellId, isCell } from 'components/table/table.functions';
+import { getParamsFromCellId, isCell, startCellId } from 'components/table/table.functions';
 
 export function selectHandler(event: MouseEvent | KeyboardEvent, selection: TableSelection, callback?: () => void) {
   switch (event.type) {
@@ -15,7 +15,8 @@ export function selectHandler(event: MouseEvent | KeyboardEvent, selection: Tabl
     default: break;
   }
 
-  callback();
+  // Analog callback && callback();
+  callback?.();
 
   function onMouseDownHandler() {
     if (isCell(event)) {
@@ -37,7 +38,8 @@ export function selectHandler(event: MouseEvent | KeyboardEvent, selection: Tabl
 
     if (!selection?.current || !handleKeys.includes(key)) return;
 
-    const currentCellId = selection.current?.data?.id;
+    // If something goes wrong, go to start line
+    const currentCellId = selection.current.data.id || startCellId;
     let { row, col } = getParamsFromCellId(currentCellId);
 
     switch (key) {

src/components/table/table.functions.ts

@@ -10,3 +10,5 @@ export function getParamsFromCellId(cellId: string) {
 
   return { col, row };
 }
+
+export const startCellId = '0:0';

src/components/toolbar/Toolbar.ts

@@ -1,3 +1,4 @@
+import { startCellId } from 'components/table/table.functions';
 import { $, Dom } from 'core/dom';
 import { ExcelStateComponent } from 'core/ExcelStateComponent';
 import { OptionsType } from 'core/ExcelComponent';
@@ -9,10 +10,10 @@ export class Toolbar extends ExcelStateComponent {
 
   constructor($root: Dom, options: OptionsType) {
     super($root, {
+      ...options,
       listeners: ['click'],
       name: 'Toolbar',
       subscribe: ['currentStyles'],
-      ...options,
     });
   }
 
@@ -25,7 +26,7 @@ export class Toolbar extends ExcelStateComponent {
   get toolbarState() {
     return {
       ...initialStyleState,
-      ...this.store?.getState()?.stylesState?.['0:0'],
+      ...this.store?.getState()?.stylesState?.[startCellId],
     };
   }
 

src/components/toolbar/toolbar.template.ts

@@ -4,9 +4,7 @@ import { initialStyleState } from 'src/constants';
 type ButtonConfigType = {
   icon: string;
   isActive: boolean;
-  value: {
-    [k: string]: string | number
-  }
+  value: ToolbarStateType;
 };
 
 export function createToolbar(state: ToolbarStateType): string {

src/constants.ts

@@ -1,7 +1,9 @@
+import { startCellId } from 'components/table/table.functions';
+import { ToolbarStateType } from 'components/toolbar/toolbar-types';
 import { StateType } from 'redux/types';
 import { storage } from 'core/utils';
 
-export const initialStyleState: Partial<CSSStyleDeclaration> = {
+export const initialStyleState: ToolbarStateType = {
   textAlign: 'left',
   fontWeight: 'normal',
   textDecoration: 'none',
@@ -16,9 +18,9 @@ export function getNormalizeInitialState(params: string): StateType {
     currentText: '',
     stylesState: {},
     title: 'New excel table',
-    ...storage(`excel:${params}`),
-    currentStyles: { ...storage(`excel:${params}`)?.stylesState?.['0:0'] },
     id: params,
     openDate: Date.now(),
+    ...storage(`excel:${params}`),
+    currentStyles: { ...storage(`excel:${params}`)?.stylesState?.[startCellId] },
   };
 }

src/core/Clients.ts

@@ -3,20 +3,25 @@ import { storageName } from 'pages/ExcelPage';
 import { StateType } from 'redux/types';
 import { getNormalizeInitialState } from 'src/constants';
 
-export class LocalStorageClient {
+export interface ClientDataType {
+  save: (state: StateType) => Promise<any>;
+  get: () => Promise<any>;
+}
+
+export class LocalStorageClient implements ClientDataType {
   private name: string;
 
   constructor(name: string) {
-    this.name = storageName(name);
+    this.name = name;
   }
 
   save(state: StateType): Promise<void> {
-    storage(this.name, state);
+    storage(storageName(this.name), state);
     return Promise.resolve();
   }
 
   get() {
-    const data = storage(this.name) || getNormalizeInitialState(this.name);
+    const data = storage(storageName(this.name)) || getNormalizeInitialState(this.name);
 
     return new Promise(resolve => {
       setTimeout(() => {

src/core/DomListener.ts

@@ -5,7 +5,7 @@ export class DomListener {
   $root: Dom;
   listeners: string[];
 
-  constructor($root: Dom, listeners?: string[]) {
+  constructor($root: Dom, listeners: string[]) {
     if (!$root) throw new Error('Не передали корневой элемент');
 
     this.$root = $root;

src/core/ExcelComponent.ts

@@ -11,26 +11,26 @@ interface ExcelComponentClass {
 }
 
 export type OptionsType = {
-  listeners?: string[];
+  listeners: string[];
   name: string;
-  emitter?: Emitter;
+  emitter: Emitter;
   store: Store;
   subscribe: string[],
 };
 
 export abstract class ExcelComponent extends DomListener implements ExcelComponentClass {
-  private name: string | undefined;
-  private emitter: Emitter | undefined;
-  private store: Store | undefined;
-  private subscribe: string[] | undefined;
+  private name: string;
+  private emitter: Emitter;
+  public store: Store;
+  private subscribe: string[];
   private unsubscribers: ((args?: any) => any)[];
 
-  constructor($root: Dom, options?: OptionsType) {
-    super($root, options?.listeners);
-    this.name = options?.name;
-    this.emitter = options?.emitter;
-    this.store = options?.store;
-    this.subscribe = options?.subscribe;
+  constructor($root: Dom, options: OptionsType) {
+    super($root, options.listeners);
+    this.name = options.name;
+    this.emitter = options.emitter;
+    this.store = options.store;
+    this.subscribe = options.subscribe;
 
     this.unsubscribers = [];
     this.prepare();

src/core/StateProcessor.ts

@@ -1,12 +1,16 @@
+import { ClientDataType } from 'core/Clients';
 import { debounce } from 'core/utils';
+import { StateType } from 'redux/types';
 
 export class StateProcessor {
-  constructor(client, dalay = 300) {
+  private client: ClientDataType;
+
+  constructor(client: ClientDataType, dalay = 300) {
     this.client = client;
     this.listen = debounce(this.listen.bind(this), dalay);
   }
 
-  listen(state) {
+  listen(state: StateType) {
     this.client.save(state);
   }
 

src/core/dom.ts

@@ -1,3 +1,4 @@
+import { ToolbarStateType } from 'components/toolbar/toolbar-types';
 import { initialStyleState } from 'src/constants';
 
 export type SelectorType = string | HTMLElement;
@@ -9,30 +10,33 @@ export interface DomClass {
 }
 
 export class Dom implements DomClass {
-  $el: HTMLElement | null;
+  $el: HTMLElement;
 
   constructor(selector: SelectorType) {
-    this.$el = typeof selector === 'string'
-      ? document.querySelector(selector)
-      : selector;
+    // Could not find element with selector in DOM, need a check
+    if (typeof selector === 'string') {
+      const elementFromDOM = document.querySelector(selector);
+      if (!elementFromDOM) throw new Error(`Can't find element with "${selector}" selector`);
+      else this.$el = elementFromDOM as HTMLElement;
+    } else {
+      this.$el = selector;
+    }
   }
 
   html(html = '') {
-    if (typeof html === 'string') {
     this.$el.innerHTML = html;
+
     return this;
   }
 
-    return this.$el.outerHTML.trim();
-  }
-
   set text(text: string) {
+    if (!text) this.$el.textContent = '';
     this.$el.textContent = text;
   }
 
   get text() {
-    if (this.$el?.closest('input')) return (this.$el as HTMLInputElement).value;
-    return this.$el?.textContent;
+    if (this.$el.closest('input')) return (this.$el as HTMLInputElement).value;
+    return (this.$el as HTMLElement).innerText;
   }
 
   clear() {
@@ -47,11 +51,8 @@ export class Dom implements DomClass {
 
     if (node instanceof Dom) child = node.$el;
 
-    if (Element.prototype.append) {
-      this.$el.append(child);
-    } else {
-      this.$el.appendChild(child);
-    }
+    if (this.$el.append) this.$el.append(child);
+    else this.$el.appendChild(child);
 
     return this;
   }
@@ -69,7 +70,7 @@ export class Dom implements DomClass {
   }
 
   get data() {
-    return this.$el.dataset;
+    return this.$el.dataset || '';
   }
 
   setData(name: string, value: string) {
@@ -108,9 +109,9 @@ export class Dom implements DomClass {
     this.$el?.classList.remove(className);
   }
 
-  getStyles(styles: (keyof Partial<CSSStyleDeclaration>)[]) {
-    return styles.reduce((res: Partial<CSSStyleDeclaration>, s: any) => {
-      res[s] = this.$el.style[s] || initialStyleState[s];
+  getStyles(styles: any[]) {
+    return styles.reduce((res, s) => {
+      res[s] = this.$el.style[s] || initialStyleState[s as keyof ToolbarStateType];
       return res;
     }, {});
   }

src/core/store/createStore.ts

@@ -9,7 +9,7 @@ export class Store {
     this.listeners = [];
   }
 
-  subscribe(fn: (state?: StateType) => void): SubscribeType {
+  subscribe(fn: (state: StateType) => void): SubscribeType {
     this.listeners.push(fn);
     return {
       unsubscribe: () => {

src/polyfills.ts

@@ -3,5 +3,5 @@ import elementClosest from 'element-closest';
 try {
   elementClosest(window); // this is used to reference window.Element
 } catch (e) {
-  console.log('Error in polyfills', e);
+  console.error('Error in polyfills', e);
 }

webpack.config.ts

@@ -2,7 +2,7 @@ import path from 'path';
 
 // FIXME:
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
-import type { Configuration as DevServerConfiguration } from 'webpack-dev-server';
+import 'webpack-dev-server';
 import type { Configuration } from 'webpack';
 
 import HtmlWebpackPlugin from 'html-webpack-plugin';
@@ -95,6 +95,18 @@ const config = (env: Record<string, any>, argv: Record<string, any>): Configurat
                 sourceMap: !isProd,
               },
             },
+            {
+              loader: "postcss-loader",
+              options: {
+                postcssOptions: {
+                  plugins: [
+                    [
+                      'postcss-preset-env',
+                    ],
+                  ],
+                },
+              },
+            },
             {
               loader: 'sass-loader',
               options: {