diff --git a/src/html/component/functions-editor/editor-tile/function-tile.ts b/src/html/component/functions-editor/editor-tile/function-tile.ts
index 4f93879..96b772d 100644
--- a/src/html/component/functions-editor/editor-tile/function-tile.ts
+++ b/src/html/component/functions-editor/editor-tile/function-tile.ts
@@ -13,7 +13,7 @@ import { EditorTile } from './editor-tile'
 library.add(faTrash, faMagnifyingGlass)
 
 @customElement('function-tile')
-class FunctionTile extends EditorTile {
+export class FunctionTile extends EditorTile {
   varIndex = 0
   constructor () {
     super()
diff --git a/src/html/component/functions-editor/editor-tile/variable-tile.ts b/src/html/component/functions-editor/editor-tile/variable-tile.ts
index 77755c5..88bb50d 100644
--- a/src/html/component/functions-editor/editor-tile/variable-tile.ts
+++ b/src/html/component/functions-editor/editor-tile/variable-tile.ts
@@ -12,7 +12,7 @@ import { EditorTile } from './editor-tile'
 library.add(faTrash, faMagnifyingGlass)
 
 @customElement('variable-tile')
-class VariableTile extends EditorTile {
+export class VariableTile extends EditorTile {
   @property() regulations: IRegulationData[] = []
   @property() variables: IVariableData[] = []
 
diff --git a/src/html/component/functions-editor/functions-editor.ts b/src/html/component/functions-editor/functions-editor.ts
index 0c24646..7f08d7e 100644
--- a/src/html/component/functions-editor/functions-editor.ts
+++ b/src/html/component/functions-editor/functions-editor.ts
@@ -11,7 +11,7 @@ import { getNextEssentiality, getNextMonotonicity } from '../../util/utilities'
 import { dialog } from '@tauri-apps/api'
 
 @customElement('functions-editor')
-class FunctionsEditor extends LitElement {
+export class FunctionsEditor extends LitElement {
   static styles = css`${unsafeCSS(style_less)}`
   @property() contentData: ContentData = ContentData.create()
   @state() functions: IFunctionData[] = []
diff --git a/src/html/component/observations-editor/edit-observation/edit-observation.ts b/src/html/component/observations-editor/edit-observation/edit-observation.ts
index fa6f049..048063d 100644
--- a/src/html/component/observations-editor/edit-observation/edit-observation.ts
+++ b/src/html/component/observations-editor/edit-observation/edit-observation.ts
@@ -51,7 +51,7 @@ export default class EditObservation extends LitElement {
             <div class="uk-margin-small">
               <label class="uk-form-label" for="form-horizontal-text">${key.toUpperCase()}</label>
               <div class="uk-form-controls">
-                <input class="uk-input" value="${this.getValue(this.data, key)}" @input="${(e: InputEvent) => { this.setValue(this.data, key, e.target?.value) }}" id="node-id" type="text" placeholder="${key}"/>
+                <input class="uk-input" value="${this.getValue(this.data, key)}" @input="${(e: InputEvent) => { this.setValue(this.data, key, (e.target as HTMLInputElement).value) }}" id="node-id" type="text" placeholder="${key}"/>
               </div>
             </div>`
         })}
diff --git a/src/html/component/regulations-editor/regulations-editor.ts b/src/html/component/regulations-editor/regulations-editor.ts
index 3abe967..6f6ba4a 100644
--- a/src/html/component/regulations-editor/regulations-editor.ts
+++ b/src/html/component/regulations-editor/regulations-editor.ts
@@ -12,7 +12,7 @@ import { type Event as TauriEvent } from '@tauri-apps/api/event'
 import { ContentData, ElementType, type IRegulationData, type IVariableData } from '../../util/data-interfaces'
 
 @customElement('regulations-editor')
-export default class RegulationsEditor extends LitElement {
+export class RegulationsEditor extends LitElement {
   static styles = css`${unsafeCSS(style_less)}`
   dialogs: Record<string, WebviewWindow | undefined> = {}
   editorElement
@@ -101,14 +101,15 @@ export default class RegulationsEditor extends LitElement {
   }
 
   private addEdge (event: Event): void {
-    this.cy?.nodes().deselect()
+    if (this.cy === undefined) return
+    this.cy.nodes().deselect()
     this.toggleMenu(ElementType.NONE)
     const variableId = (event as CustomEvent).detail.id
 
     // start attribute wrongly typed - added weird typecast to avoid tslint error
     this.edgeHandles?.start((this.cy?.$id(variableId) as unknown as string))
     // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-    // @ts-expect-error
+    // @ts-expect-error renderer exists but its missing from the *.d.ts file
     this.cy.renderer().hoverData.capture = true
   }
 
diff --git a/src/html/component/regulations-editor/rename-dialog/rename-dialog.ts b/src/html/component/regulations-editor/rename-dialog/rename-dialog.ts
index fb8d99d..b49155d 100644
--- a/src/html/component/regulations-editor/rename-dialog/rename-dialog.ts
+++ b/src/html/component/regulations-editor/rename-dialog/rename-dialog.ts
@@ -5,7 +5,7 @@ import { emit, type Event as TauriEvent, once } from '@tauri-apps/api/event'
 import { appWindow, LogicalSize } from '@tauri-apps/api/window'
 
 @customElement('rename-dialog')
-class RenameDialog extends LitElement {
+export class RenameDialog extends LitElement {
   static styles = css`${unsafeCSS(style_less)}`
   @query('#node-name') nameField: HTMLInputElement | undefined
   @query('#node-id') variableIdField: HTMLInputElement | undefined