diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index 86a1866..b72be75 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -5,7 +5,7 @@ module.exports = {
   },
   extends: [
     'plugin:react/recommended',
-    'standard'
+    'standard-with-typescript'
   ],
   parser: '@typescript-eslint/parser',
   parserOptions: {
@@ -13,7 +13,8 @@ module.exports = {
       jsx: true
     },
     ecmaVersion: 'latest',
-    sourceType: 'module'
+    sourceType: 'module',
+    project: './tsconfig.json'
   },
   plugins: [
     'react',
@@ -21,9 +22,11 @@ module.exports = {
   ],
   rules: {
     'space-before-function-paren': ['error', 'never'],
+    '@typescript-eslint/space-before-function-paren': ['error', 'never'],
     indent: ['warn', 2, { SwitchCase: 1 }],
-    semi: ['warn', 'always'],
+    semi: 'off',
+    '@typescript-eslint/semi': ['warn', 'always'],
     'no-unused-vars': 'off',
-    '@typescript-eslint/no-unused-vars': 'error'
+    '@typescript-eslint/no-unused-vars': 'error',
   }
 };
diff --git a/package-lock.json b/package-lock.json
index 83e5fcb..285432c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,6 +28,7 @@
         "autoprefixer": "^10.4.8",
         "eslint": "^8.20.0",
         "eslint-config-standard": "^17.0.0",
+        "eslint-config-standard-with-typescript": "^22.0.0",
         "eslint-plugin-import": "^2.26.0",
         "eslint-plugin-n": "^15.2.4",
         "eslint-plugin-promise": "^6.0.0",
@@ -2697,6 +2698,24 @@
         "eslint-plugin-promise": "^6.0.0"
       }
     },
+    "node_modules/eslint-config-standard-with-typescript": {
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-standard-with-typescript/-/eslint-config-standard-with-typescript-22.0.0.tgz",
+      "integrity": "sha512-VA36U7UlFpwULvkdnh6MQj5GAV2Q+tT68ALLAwJP0ZuNXU2m0wX07uxX4qyLRdHgSzH4QJ73CveKBuSOYvh7vQ==",
+      "dev": true,
+      "dependencies": {
+        "@typescript-eslint/parser": "^5.0.0",
+        "eslint-config-standard": "17.0.0"
+      },
+      "peerDependencies": {
+        "@typescript-eslint/eslint-plugin": "^5.0.0",
+        "eslint": "^8.0.1",
+        "eslint-plugin-import": "^2.25.2",
+        "eslint-plugin-n": "^15.0.0",
+        "eslint-plugin-promise": "^6.0.0",
+        "typescript": "*"
+      }
+    },
     "node_modules/eslint-import-resolver-node": {
       "version": "0.3.6",
       "resolved": "https://registry.npmjs.org/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.6.tgz",
@@ -8093,6 +8112,16 @@
       "dev": true,
       "requires": {}
     },
+    "eslint-config-standard-with-typescript": {
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-standard-with-typescript/-/eslint-config-standard-with-typescript-22.0.0.tgz",
+      "integrity": "sha512-VA36U7UlFpwULvkdnh6MQj5GAV2Q+tT68ALLAwJP0ZuNXU2m0wX07uxX4qyLRdHgSzH4QJ73CveKBuSOYvh7vQ==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/parser": "^5.0.0",
+        "eslint-config-standard": "17.0.0"
+      }
+    },
     "eslint-import-resolver-node": {
       "version": "0.3.6",
       "resolved": "https://registry.npmjs.org/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.6.tgz",
diff --git a/package.json b/package.json
index 149d76f..b4e99f5 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,7 @@
     "autoprefixer": "^10.4.8",
     "eslint": "^8.20.0",
     "eslint-config-standard": "^17.0.0",
+    "eslint-config-standard-with-typescript": "^22.0.0",
     "eslint-plugin-import": "^2.26.0",
     "eslint-plugin-n": "^15.2.4",
     "eslint-plugin-promise": "^6.0.0",
diff --git a/src/App.tsx b/src/App.tsx
index 2b8c7fd..5f20f93 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,25 +1,27 @@
 import * as React from 'react';
 import './App.scss';
 import { MainMenu } from './Components/MainMenu/MainMenu';
-import { ContainerModel, findContainerById, IContainerModel, MakeIterator } from './Interfaces/ContainerModel';
+import { ContainerModel, IContainerModel } from './Interfaces/ContainerModel';
+import { findContainerById, MakeIterator } from './utils/itertools';
 import Editor, { IEditorState } from './Editor';
-import { AvailableContainer } from './Interfaces/AvailableContainer';
 import { Configuration } from './Interfaces/Configuration';
 
 export interface IHistoryState {
-  MainContainer: IContainerModel | null,
-  SelectedContainer: IContainerModel | null,
-  SelectedContainerId: string,
+  MainContainer: IContainerModel | null
+  SelectedContainer: IContainerModel | null
+  SelectedContainerId: string
   TypeCounters: Record<string, number>
 }
 
+// App will never have props
+// eslint-disable-next-line @typescript-eslint/no-empty-interface
 interface IAppProps {
 }
 
 interface IAppState {
-  configuration: Configuration,
-  history: IHistoryState[],
-  historyCurrentStep: number,
+  configuration: Configuration
+  history: IHistoryState[]
+  historyCurrentStep: number
   isLoaded: boolean
 }
 
@@ -32,7 +34,12 @@ export class App extends React.Component<IAppProps> {
       configuration: {
         AvailableContainers: [],
         AvailableSymbols: [],
-        MainContainer: {} as AvailableContainer
+        MainContainer: {
+          Type: 'EmptyContainer',
+          Width: 3000,
+          Height: 200,
+          Style: {}
+        }
       },
       history: [],
       historyCurrentStep: 0,
@@ -40,7 +47,7 @@ export class App extends React.Component<IAppProps> {
     };
   }
 
-  componentDidMount() {
+  componentDidMount(): void {
     const queryString = window.location.search;
     const urlParams = new URLSearchParams(queryString);
     const state = urlParams.get('state');
@@ -50,35 +57,39 @@ export class App extends React.Component<IAppProps> {
     }
 
     fetch(state)
-      .then((response) => response.json())
+      .then(
+        async(response) => await response.json(),
+        (error) => { throw new Error(error); }
+      )
       .then((data: IEditorState) => {
         this.LoadState(data);
-      });
+      }, (error) => { throw new Error(error); });
   }
 
-  public NewEditor() {
+  public NewEditor(): void {
     // Fetch the configuration from the API
-    fetchConfiguration().then((configuration: Configuration) => {
+    fetchConfiguration()
+      .then((configuration: Configuration) => {
       // Set the main container from the given properties of the API
-      const MainContainer = new ContainerModel(
-        null,
-        {
-          id: 'main',
-          parentId: 'null',
-          x: 0,
-          y: 0,
-          width: configuration.MainContainer.Width,
-          height: configuration.MainContainer.Height,
-          fillOpacity: 0,
-          stroke: 'black'
-        }
-      );
+        const MainContainer = new ContainerModel(
+          null,
+          {
+            id: 'main',
+            parentId: 'null',
+            x: 0,
+            y: 0,
+            width: configuration.MainContainer.Width,
+            height: configuration.MainContainer.Height,
+            fillOpacity: 0,
+            stroke: 'black'
+          }
+        );
 
-      // Save the configuration and the new MainContainer
-      // and default the selected container to it
-      this.setState({
-        configuration,
-        history:
+        // Save the configuration and the new MainContainer
+        // and default the selected container to it
+        this.setState({
+          configuration,
+          history:
           [
             {
               MainContainer,
@@ -86,13 +97,14 @@ export class App extends React.Component<IAppProps> {
               TypeCounters: {}
             }
           ],
-        historyCurrentStep: 0,
-        isLoaded: true
-      } as IAppState);
-    });
+          historyCurrentStep: 0,
+          isLoaded: true
+        });
+      }, (error) => { throw new Error(error); }
+      );
   }
 
-  public LoadEditor(files: FileList | null) {
+  public LoadEditor(files: FileList | null): void {
     if (files === null) {
       return;
     }
@@ -107,7 +119,7 @@ export class App extends React.Component<IAppProps> {
     reader.readAsText(file);
   }
 
-  private LoadState(editorState: IEditorState) {
+  private LoadState(editorState: IEditorState): void {
     Revive(editorState);
 
     this.setState({
@@ -115,10 +127,10 @@ export class App extends React.Component<IAppProps> {
       history: editorState.history,
       historyCurrentStep: editorState.historyCurrentStep,
       isLoaded: true
-    } as IAppState);
+    });
   }
 
-  public render() {
+  public render(): JSX.Element {
     if (this.state.isLoaded) {
       return (
         <div>
@@ -149,16 +161,17 @@ export class App extends React.Component<IAppProps> {
 export async function fetchConfiguration(): Promise<Configuration> {
   const url = `${import.meta.env.VITE_API_URL}`;
   // The test library cannot use the Fetch API
-  // @ts-ignore
+  // @ts-expect-error
+  // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
   if (window.fetch) {
     return await fetch(url, {
       method: 'POST'
     })
-      .then((response) =>
-        response.json()
+      .then(async(response) =>
+        await response.json()
       ) as Configuration;
   }
-  return new Promise((resolve) => {
+  return await new Promise((resolve) => {
     const xhr = new XMLHttpRequest();
     xhr.open('POST', url, true);
     xhr.onreadystatechange = function() { // Call a function when the state changes.
diff --git a/src/Components/ElementsSidebar/ElementsSidebar.tsx b/src/Components/ElementsSidebar/ElementsSidebar.tsx
index c4ea51a..caa6081 100644
--- a/src/Components/ElementsSidebar/ElementsSidebar.tsx
+++ b/src/Components/ElementsSidebar/ElementsSidebar.tsx
@@ -1,31 +1,32 @@
 import * as React from 'react';
 import { motion } from 'framer-motion';
 import { Properties } from '../Properties/Properties';
-import { IContainerModel, getDepth, MakeIterator } from '../../Interfaces/ContainerModel';
+import { IContainerModel } from '../../Interfaces/ContainerModel';
+import { getDepth, MakeIterator } from '../../utils/itertools';
 
 interface IElementsSidebarProps {
-  MainContainer: IContainerModel | null,
-  isOpen: boolean,
+  MainContainer: IContainerModel | null
+  isOpen: boolean
   isHistoryOpen: boolean
-  SelectedContainer: IContainerModel | null,
-  onClick: () => void,
-  onPropertyChange: (key: string, value: string) => void,
+  SelectedContainer: IContainerModel | null
+  onClick: () => void
+  onPropertyChange: (key: string, value: string) => void
   selectContainer: (container: IContainerModel) => void
 }
 
 export class ElementsSidebar extends React.PureComponent<IElementsSidebarProps> {
   public iterateChilds(handleContainer: (container: IContainerModel) => void): React.ReactNode {
-    if (!this.props.MainContainer) {
+    if (this.props.MainContainer == null) {
       return null;
     }
 
     const it = MakeIterator(this.props.MainContainer);
     for (const container of it) {
-      handleContainer(container as IContainerModel);
+      handleContainer(container);
     }
   }
 
-  public render() {
+  public render(): JSX.Element {
     let isOpenClasses = '-right-64';
     if (this.props.isOpen) {
       isOpenClasses = this.props.isHistoryOpen
diff --git a/src/Components/FloatingButton/FloatingButton.tsx b/src/Components/FloatingButton/FloatingButton.tsx
index 544c2bd..3145f45 100644
--- a/src/Components/FloatingButton/FloatingButton.tsx
+++ b/src/Components/FloatingButton/FloatingButton.tsx
@@ -9,7 +9,7 @@ interface IFloatingButtonProps {
 const toggleState = (
   isHidden: boolean,
   setHidden: React.Dispatch<React.SetStateAction<boolean>>
-) => {
+): void => {
   setHidden(!isHidden);
 };
 
diff --git a/src/Components/History/History.tsx b/src/Components/History/History.tsx
index e77a8c7..7487de1 100644
--- a/src/Components/History/History.tsx
+++ b/src/Components/History/History.tsx
@@ -2,19 +2,19 @@ import * as React from 'react';
 import { IHistoryState } from '../../App';
 
 interface IHistoryProps {
-  history: IHistoryState[],
-  historyCurrentStep: number,
-  isOpen: boolean,
-  onClick: () => void,
+  history: IHistoryState[]
+  historyCurrentStep: number
+  isOpen: boolean
+  onClick: () => void
   jumpTo: (move: number) => void
 }
 
 export class History extends React.PureComponent<IHistoryProps> {
-  public render() {
+  public render(): JSX.Element {
     const isOpenClasses = this.props.isOpen ? 'right-0' : '-right-64';
 
     const states = this.props.history.map((step, move) => {
-      const desc = move
+      const desc = move > 0
         ? `Go to modification n°${move}`
         : 'Go to the beginning';
 
diff --git a/src/Components/MainMenu/MainMenu.tsx b/src/Components/MainMenu/MainMenu.tsx
index 92b19d5..a9b3da2 100644
--- a/src/Components/MainMenu/MainMenu.tsx
+++ b/src/Components/MainMenu/MainMenu.tsx
@@ -1,7 +1,7 @@
 import * as React from 'react';
 
 interface IMainMenuProps {
-  newEditor: () => void;
+  newEditor: () => void
   loadEditor: (files: FileList | null) => void
 }
 
diff --git a/src/Components/Properties/Properties.tsx b/src/Components/Properties/Properties.tsx
index 65cfefd..f7979a9 100644
--- a/src/Components/Properties/Properties.tsx
+++ b/src/Components/Properties/Properties.tsx
@@ -2,7 +2,7 @@ import * as React from 'react';
 import ContainerProperties from '../../Interfaces/Properties';
 
 interface IPropertiesProps {
-  properties?: ContainerProperties,
+  properties?: ContainerProperties
   onChange: (key: string, value: string) => void
 }
 
@@ -27,7 +27,7 @@ export class Properties extends React.PureComponent<IPropertiesProps> {
   public handleProperties = (
     [key, value]: [string, string | number],
     groupInput: React.ReactNode[]
-  ) => {
+  ): void => {
     const id = `property-${key}`;
     const type = 'text';
     const isDisabled = key === 'id' || key === 'parentId'; // hardcoded
diff --git a/src/Components/SVG/Elements/Container.tsx b/src/Components/SVG/Elements/Container.tsx
index a352bcd..e64739c 100644
--- a/src/Components/SVG/Elements/Container.tsx
+++ b/src/Components/SVG/Elements/Container.tsx
@@ -1,5 +1,6 @@
 import * as React from 'react';
-import { getDepth, IContainerModel } from '../../../Interfaces/ContainerModel';
+import { IContainerModel } from '../../../Interfaces/ContainerModel';
+import { getDepth } from '../../../utils/itertools';
 import { Dimension } from './Dimension';
 
 export interface IContainerProps {
@@ -20,11 +21,11 @@ export class Container extends React.PureComponent<IContainerProps> {
     const transform = `translate(${Number(this.props.model.properties.x)}, ${Number(this.props.model.properties.y)})`;
 
     // g style
-    const defaultStyle = {
+    const defaultStyle: React.CSSProperties = {
       transitionProperty: 'all',
       transitionTimingFunction: 'cubic-bezier(0.4, 0, 0.2, 1)',
       transitionDuration: '150ms'
-    } as React.CSSProperties;
+    };
 
     // Rect style
     const style = Object.assign(
diff --git a/src/Components/SVG/Elements/Dimension.tsx b/src/Components/SVG/Elements/Dimension.tsx
index 96ab2c9..612b3f7 100644
--- a/src/Components/SVG/Elements/Dimension.tsx
+++ b/src/Components/SVG/Elements/Dimension.tsx
@@ -1,19 +1,19 @@
 import * as React from 'react';
 
 interface IDimensionProps {
-  id: string;
-  xStart: number;
-  xEnd: number;
-  y: number;
-  text: string;
-  strokeWidth: number;
+  id: string
+  xStart: number
+  xEnd: number
+  y: number
+  text: string
+  strokeWidth: number
 }
 
 export class Dimension extends React.PureComponent<IDimensionProps> {
-  public render() {
-    const style = {
+  public render(): JSX.Element {
+    const style: React.CSSProperties = {
       stroke: 'black'
-    } as React.CSSProperties;
+    };
     return (
       <g key={this.props.id}>
         <line
diff --git a/src/Components/SVG/Elements/DimensionLayer.tsx b/src/Components/SVG/Elements/DimensionLayer.tsx
index 3a3dee8..85f1a43 100644
--- a/src/Components/SVG/Elements/DimensionLayer.tsx
+++ b/src/Components/SVG/Elements/DimensionLayer.tsx
@@ -1,10 +1,11 @@
 import * as React from 'react';
-import { ContainerModel, getDepth, MakeIterator } from '../../../Interfaces/ContainerModel';
+import { ContainerModel } from '../../../Interfaces/ContainerModel';
+import { getDepth, MakeIterator } from '../../../utils/itertools';
 import { Dimension } from './Dimension';
 
 interface IDimensionLayerProps {
-  isHidden: boolean,
-  roots: ContainerModel | ContainerModel[] | null,
+  isHidden: boolean
+  roots: ContainerModel | ContainerModel[] | null
 }
 
 const GAP: number = 50;
diff --git a/src/Components/SVG/Elements/Selector.tsx b/src/Components/SVG/Elements/Selector.tsx
index de6d9a3..c5937e0 100644
--- a/src/Components/SVG/Elements/Selector.tsx
+++ b/src/Components/SVG/Elements/Selector.tsx
@@ -1,5 +1,6 @@
 import * as React from 'react';
-import { IContainerModel, getAbsolutePosition } from '../../../Interfaces/ContainerModel';
+import { IContainerModel } from '../../../Interfaces/ContainerModel';
+import { getAbsolutePosition } from '../../../utils/itertools';
 
 interface ISelectorProps {
   selected: IContainerModel | null
@@ -18,7 +19,7 @@ export const Selector: React.FC<ISelectorProps> = (props) => {
     props.selected.properties.width,
     props.selected.properties.height
   ];
-  const style = {
+  const style: React.CSSProperties = {
     stroke: '#3B82F6', // tw blue-500
     strokeWidth: 4,
     fillOpacity: 0,
@@ -26,7 +27,7 @@ export const Selector: React.FC<ISelectorProps> = (props) => {
     transitionTimingFunction: 'cubic-bezier(0.4, 0, 0.2, 1)',
     transitionDuration: '150ms',
     animation: 'fadein 750ms ease-in alternate infinite'
-  } as React.CSSProperties;
+  };
 
   return (
     <rect
diff --git a/src/Components/SVG/SVG.tsx b/src/Components/SVG/SVG.tsx
index bf8704b..11ec2b9 100644
--- a/src/Components/SVG/SVG.tsx
+++ b/src/Components/SVG/SVG.tsx
@@ -1,34 +1,21 @@
 import * as React from 'react';
-import { ReactSVGPanZoom, Tool, Value, TOOL_PAN } from 'react-svg-pan-zoom';
+import { UncontrolledReactSVGPanZoom } from 'react-svg-pan-zoom';
 import { Container } from './Elements/Container';
 import { ContainerModel } from '../../Interfaces/ContainerModel';
 import { Selector } from './Elements/Selector';
 
 interface ISVGProps {
-  width: number,
-  height: number,
-  children: ContainerModel | ContainerModel[] | null,
+  width: number
+  height: number
+  children: ContainerModel | ContainerModel[] | null
   selected: ContainerModel | null
 }
 
-interface ISVGState {
-  value: Value,
-  tool: Tool
-}
-
 export class SVG extends React.PureComponent<ISVGProps> {
-  public state: ISVGState;
   public static ID = 'svg';
 
   constructor(props: ISVGProps) {
     super(props);
-    this.state = {
-      value: {
-        viewerWidth: window.innerWidth,
-        viewerHeight: window.innerHeight
-      } as Value,
-      tool: TOOL_PAN
-    };
   }
 
   render() {
@@ -49,13 +36,11 @@ export class SVG extends React.PureComponent<ISVGProps> {
 
     return (
       <div id={SVG.ID}>
-        <ReactSVGPanZoom
+        <UncontrolledReactSVGPanZoom
           width={window.innerWidth}
           height={window.innerHeight}
           background={'#ffffff'}
           defaultTool='pan'
-          value={this.state.value} onChangeValue={value => this.setState({ value })}
-          tool={this.state.tool} onChangeTool={tool => this.setState({ tool })}
           miniatureProps={{
             position: 'left',
             background: '#616264',
@@ -67,9 +52,8 @@ export class SVG extends React.PureComponent<ISVGProps> {
             { children }
             <Selector selected={this.props.selected} />
           </svg>
-        </ReactSVGPanZoom>
+        </UncontrolledReactSVGPanZoom>
       </div>
-
     );
   };
 }
diff --git a/src/Components/Sidebar/Sidebar.tsx b/src/Components/Sidebar/Sidebar.tsx
index dd34812..b474cc9 100644
--- a/src/Components/Sidebar/Sidebar.tsx
+++ b/src/Components/Sidebar/Sidebar.tsx
@@ -3,13 +3,13 @@ import { AvailableContainer } from '../../Interfaces/AvailableContainer';
 
 interface ISidebarProps {
   componentOptions: AvailableContainer[]
-  isOpen: boolean;
-  onClick: () => void;
-  buttonOnClick: (type: string) => void;
+  isOpen: boolean
+  onClick: () => void
+  buttonOnClick: (type: string) => void
 }
 
 export default class Sidebar extends React.PureComponent<ISidebarProps> {
-  public render() {
+  public render(): JSX.Element {
     const listElements = this.props.componentOptions.map(componentOption =>
       <button className='hover:bg-blue-600 transition-all sidebar-row' key={componentOption.Type} onClick={() => this.props.buttonOnClick(componentOption.Type)}>
         {componentOption.Type}
diff --git a/src/Editor.tsx b/src/Editor.tsx
index 89c38aa..3afecc6 100644
--- a/src/Editor.tsx
+++ b/src/Editor.tsx
@@ -6,23 +6,24 @@ import { ElementsSidebar } from './Components/ElementsSidebar/ElementsSidebar';
 import { Configuration } from './Interfaces/Configuration';
 import { SVG } from './Components/SVG/SVG';
 import { History } from './Components/History/History';
-import { ContainerModel, findContainerById, IContainerModel, MakeIterator } from './Interfaces/ContainerModel';
+import { ContainerModel, IContainerModel } from './Interfaces/ContainerModel';
+import { findContainerById, MakeIterator } from './utils/itertools';
 import Properties from './Interfaces/Properties';
 import { IHistoryState } from './App';
 import FloatingButton from './Components/FloatingButton/FloatingButton';
 
 interface IEditorProps {
-  configuration: Configuration,
-  history: Array<IHistoryState>,
+  configuration: Configuration
+  history: IHistoryState[]
   historyCurrentStep: number
 }
 
 export interface IEditorState {
-  isSidebarOpen: boolean,
-  isElementsSidebarOpen: boolean,
-  isHistoryOpen: boolean,
-  history: Array<IHistoryState>,
-  historyCurrentStep: number,
+  isSidebarOpen: boolean
+  isElementsSidebarOpen: boolean
+  isHistoryOpen: boolean
+  history: IHistoryState[]
+  historyCurrentStep: number
   // do not use it, use props.configuration
   // only used for serialization purpose
   configuration: Configuration
@@ -40,7 +41,7 @@ class Editor extends React.Component<IEditorProps> {
       configuration: Object.assign({}, props.configuration),
       history: [...props.history],
       historyCurrentStep: props.historyCurrentStep
-    } as IEditorState;
+    };
   }
 
   public getCurrentHistory = (): IHistoryState[] => this.state.history.slice(0, this.state.historyCurrentStep + 1);
@@ -49,35 +50,35 @@ class Editor extends React.Component<IEditorProps> {
   /**
    * Toggle the components sidebar
    */
-  public ToggleSidebar() {
+  public ToggleSidebar(): void {
     this.setState({
       isSidebarOpen: !this.state.isSidebarOpen
-    } as IEditorState);
+    });
   }
 
   /**
    * Toggle the elements
    */
-  public ToggleElementsSidebar() {
+  public ToggleElementsSidebar(): void {
     this.setState({
       isElementsSidebarOpen: !this.state.isElementsSidebarOpen
-    } as IEditorState);
+    });
   }
 
   /**
    * Toggle the elements
    */
-  public ToggleHistory() {
+  public ToggleHistory(): void {
     this.setState({
       isHistoryOpen: !this.state.isHistoryOpen
-    } as IEditorState);
+    });
   }
 
   /**
    * Select a container
    * @param container Selected container
    */
-  public SelectContainer(container: ContainerModel) {
+  public SelectContainer(container: ContainerModel): void {
     const history = this.getCurrentHistory();
     const current = history[history.length - 1];
 
@@ -100,7 +101,7 @@ class Editor extends React.Component<IEditorProps> {
         SelectedContainerId: SelectedContainer.properties.id
       }]),
       historyCurrentStep: history.length
-    } as IEditorState);
+    });
   }
 
   /**
@@ -134,7 +135,7 @@ class Editor extends React.Component<IEditorProps> {
           TypeCounters: Object.assign({}, current.TypeCounters)
         }]),
         historyCurrentStep: history.length
-      } as IEditorState);
+      });
       return;
     }
 
@@ -156,7 +157,7 @@ class Editor extends React.Component<IEditorProps> {
           TypeCounters: Object.assign({}, current.TypeCounters)
         }]),
         historyCurrentStep: history.length
-      } as IEditorState);
+      });
   }
 
   /**
@@ -196,8 +197,7 @@ class Editor extends React.Component<IEditorProps> {
     const count = newCounters[type];
 
     // Create maincontainer model
-    const structure: IContainerModel = structuredClone(current.MainContainer);
-    const clone = Object.assign(new ContainerModel(null, {} as Properties), structure);
+    const clone: IContainerModel = structuredClone(current.MainContainer);
 
     // Find the parent
     const it = MakeIterator(clone);
@@ -230,7 +230,7 @@ class Editor extends React.Component<IEditorProps> {
         width: properties?.Width,
         height: parent.properties.height,
         ...properties.Style
-      } as Properties,
+      },
       [],
       {
         type
@@ -249,16 +249,16 @@ class Editor extends React.Component<IEditorProps> {
         SelectedContainerId: parent.properties.id
       }]),
       historyCurrentStep: history.length
-    } as IEditorState);
+    });
   }
 
   public jumpTo(move: number): void {
     this.setState({
       historyCurrentStep: move
-    } as IEditorState);
+    });
   }
 
-  public SaveEditorAsJSON() {
+  public SaveEditorAsJSON(): void {
     const exportName = 'state';
     const spaces = import.meta.env.DEV ? 4 : 0;
     const data = JSON.stringify(this.state, getCircularReplacer(), spaces);
@@ -271,7 +271,7 @@ class Editor extends React.Component<IEditorProps> {
     downloadAnchorNode.remove();
   }
 
-  public SaveEditorAsSVG() {
+  public SaveEditorAsSVG(): void {
     const svgWrapper = document.getElementById(SVG.ID) as HTMLElement;
     const svg = svgWrapper.querySelector('svg') as SVGSVGElement;
     const preface = '<?xml version="1.0" standalone="no"?>\r\n';
@@ -289,7 +289,7 @@ class Editor extends React.Component<IEditorProps> {
    * Render the application
    * @returns {JSX.Element} Rendered JSX element
    */
-  render() {
+  render(): JSX.Element {
     const current = this.getCurrentHistoryState();
     let buttonRightOffsetClasses = 'right-12';
     if (this.state.isElementsSidebarOpen || this.state.isHistoryOpen) {
@@ -371,7 +371,7 @@ class Editor extends React.Component<IEditorProps> {
   }
 }
 
-const getCircularReplacer = () => {
+const getCircularReplacer = (): (key: any, value: object | null) => object | null | undefined => {
   const seen = new WeakSet();
   return (key: any, value: object | null) => {
     if (key === 'parent') {
diff --git a/src/Enums/AddingBehavior.ts b/src/Enums/AddingBehavior.ts
index ddf722e..fb6ae67 100644
--- a/src/Enums/AddingBehavior.ts
+++ b/src/Enums/AddingBehavior.ts
@@ -1,4 +1,4 @@
 export enum AddingBehavior {
-    InsertInto,
-    Replace
+  InsertInto,
+  Replace
 }
diff --git a/src/Enums/XPositionReference.ts b/src/Enums/XPositionReference.ts
index ec8108a..8571167 100644
--- a/src/Enums/XPositionReference.ts
+++ b/src/Enums/XPositionReference.ts
@@ -1,5 +1,5 @@
 export enum XPositionReference {
-    Left,
-    Center,
-    Right
+  Left,
+  Center,
+  Right
 }
diff --git a/src/Interfaces/Configuration.ts b/src/Interfaces/Configuration.ts
index 2127299..f8d4854 100644
--- a/src/Interfaces/Configuration.ts
+++ b/src/Interfaces/Configuration.ts
@@ -3,7 +3,7 @@ import { AvailableSymbolModel } from './AvailableSymbol';
 
 /** Model of configuration for the application to configure it */
 export interface Configuration {
-  AvailableContainers: AvailableContainer[];
-  AvailableSymbols: AvailableSymbolModel[];
-  MainContainer: AvailableContainer;
+  AvailableContainers: AvailableContainer[]
+  AvailableSymbols: AvailableSymbolModel[]
+  MainContainer: AvailableContainer
 }
diff --git a/src/Interfaces/ContainerModel.ts b/src/Interfaces/ContainerModel.ts
index 787cf91..1c70ae3 100644
--- a/src/Interfaces/ContainerModel.ts
+++ b/src/Interfaces/ContainerModel.ts
@@ -1,9 +1,9 @@
 import Properties from './Properties';
 
 export interface IContainerModel {
-  children: IContainerModel[],
-  parent: IContainerModel | null,
-  properties: Properties,
+  children: IContainerModel[]
+  parent: IContainerModel | null
+  properties: Properties
   userData: Record<string, string | number>
 }
 
@@ -24,67 +24,3 @@ export class ContainerModel implements IContainerModel {
     this.userData = userData;
   }
 };
-
-/**
- * Returns a Generator iterating of over the children depth-first
- */
-export function * MakeIterator(root: IContainerModel): Generator<IContainerModel, void, unknown> {
-  const queue: IContainerModel[] = [root];
-  const visited = new Set<IContainerModel>(queue);
-  while (queue.length > 0) {
-    const container = queue.pop() as IContainerModel;
-
-    yield container;
-
-    // if this reverse() gets costly, replace it by a simple for
-    container.children.forEach((child) => {
-      if (visited.has(child)) {
-        return;
-      }
-      visited.add(child);
-      queue.push(child);
-    });
-  }
-}
-
-/**
-   * Returns the depth of the container
-   * @returns The depth of the container
-   */
-export function getDepth(parent: IContainerModel) {
-  let depth = 0;
-
-  let current: IContainerModel | null = parent;
-  while (current != null) {
-    depth++;
-    current = current.parent;
-  }
-
-  return depth;
-}
-
-/**
-   * Returns the absolute position by iterating to the parent
-   * @returns The absolute position of the container
-   */
-export function getAbsolutePosition(container: IContainerModel): [number, number] {
-  let x = Number(container.properties.x);
-  let y = Number(container.properties.y);
-  let current = container.parent;
-  while (current != null) {
-    x += Number(current.properties.x);
-    y += Number(current.properties.y);
-    current = current.parent;
-  }
-  return [x, y];
-}
-
-export function findContainerById(root: IContainerModel, id: string): IContainerModel | undefined {
-  const it = MakeIterator(root);
-  for (const container of it) {
-    if (container.properties.id === id) {
-      return container;
-    }
-  }
-  return undefined;
-}
diff --git a/src/Interfaces/Image.ts b/src/Interfaces/Image.ts
index 723d04b..b839b09 100644
--- a/src/Interfaces/Image.ts
+++ b/src/Interfaces/Image.ts
@@ -1,7 +1,7 @@
 /** Model of an image with multiple source */
 export interface Image {
-    Name: string;
-    Url: string;
-    Base64Image: string;
-    Svg: string;
+  Name: string
+  Url: string
+  Base64Image: string
+  Svg: string
 }
diff --git a/src/Interfaces/Properties.ts b/src/Interfaces/Properties.ts
index 79f4f47..ed185f2 100644
--- a/src/Interfaces/Properties.ts
+++ b/src/Interfaces/Properties.ts
@@ -1,8 +1,8 @@
 import * as React from 'react';
 
 export default interface Properties extends React.CSSProperties {
-  id: string,
-  parentId: string | null,
-  x: number,
+  id: string
+  parentId: string | null
+  x: number
   y: number
 }
diff --git a/src/utils/itertools.ts b/src/utils/itertools.ts
new file mode 100644
index 0000000..031b497
--- /dev/null
+++ b/src/utils/itertools.ts
@@ -0,0 +1,65 @@
+import { IContainerModel } from '../Interfaces/ContainerModel';
+
+/**
+ * Returns a Generator iterating of over the children depth-first
+ */
+export function * MakeIterator(root: IContainerModel): Generator<IContainerModel, void, unknown> {
+  const queue: IContainerModel[] = [root];
+  const visited = new Set<IContainerModel>(queue);
+  while (queue.length > 0) {
+    const container = queue.pop() as IContainerModel;
+
+    yield container;
+
+    // if this reverse() gets costly, replace it by a simple for
+    container.children.forEach((child) => {
+      if (visited.has(child)) {
+        return;
+      }
+      visited.add(child);
+      queue.push(child);
+    });
+  }
+}
+
+/**
+ * Returns the depth of the container
+ * @returns The depth of the container
+ */
+export function getDepth(parent: IContainerModel): number {
+  let depth = 0;
+
+  let current: IContainerModel | null = parent;
+  while (current != null) {
+    depth++;
+    current = current.parent;
+  }
+
+  return depth;
+}
+
+/**
+ * Returns the absolute position by iterating to the parent
+ * @returns The absolute position of the container
+ */
+export function getAbsolutePosition(container: IContainerModel): [number, number] {
+  let x = Number(container.properties.x);
+  let y = Number(container.properties.y);
+  let current = container.parent;
+  while (current != null) {
+    x += Number(current.properties.x);
+    y += Number(current.properties.y);
+    current = current.parent;
+  }
+  return [x, y];
+}
+
+export function findContainerById(root: IContainerModel, id: string): IContainerModel | undefined {
+  const it = MakeIterator(root);
+  for (const container of it) {
+    if (container.properties.id === id) {
+      return container;
+    }
+  }
+  return undefined;
+}
diff --git a/src/utils/test-utils.tsx b/src/utils/test-utils.tsx
index bb5dc8b..139850e 100644
--- a/src/utils/test-utils.tsx
+++ b/src/utils/test-utils.tsx
@@ -1,13 +1,13 @@
 /* eslint-disable import/export */
 import * as React from 'react';
-import { cleanup, render } from '@testing-library/react';
+import { cleanup, render, RenderResult } from '@testing-library/react';
 import { afterEach } from 'vitest';
 
 afterEach(() => {
   cleanup();
 });
 
-const customRender = (ui: React.ReactElement, options = {}) =>
+const customRender = (ui: React.ReactElement, options = {}): RenderResult =>
   render(ui, {
     // wrap provider(s) here if needed
     wrapper: ({ children }) => children,