diff --git a/packages/app/components/auth/PanelTransition.tsx b/packages/app/components/auth/PanelTransition.tsx
index 370132c..c260793 100644
--- a/packages/app/components/auth/PanelTransition.tsx
+++ b/packages/app/components/auth/PanelTransition.tsx
@@ -139,7 +139,7 @@ class PanelTransition extends React.PureComponent<Props, State> {
         onFormSubmit: () => void;
     } | null = null;
 
-    timerIds: Array<number> = []; // this is a list of a probably running timeouts to clean on unmount
+    timerIds: Array<ReturnType<typeof setTimeout>> = []; // this is a list of a probably running timeouts to clean on unmount
 
     componentDidUpdate(prevProps: Props) {
         const nextPanel: PanelId = this.props.Body && (this.props.Body.type as any).panelId;
@@ -160,8 +160,7 @@ class PanelTransition extends React.PureComponent<Props, State> {
 
             if (forceHeight) {
                 this.timerIds.push(
-                    // https://stackoverflow.com/a/51040768/5184751
-                    window.setTimeout(() => {
+                    setTimeout(() => {
                         this.setState({ forceHeight: 0 });
                     }, 100),
                 );
diff --git a/packages/app/components/auth/deviceCode/DeviceCode.tsx b/packages/app/components/auth/deviceCode/DeviceCode.tsx
index cae7191..99954b5 100644
--- a/packages/app/components/auth/deviceCode/DeviceCode.tsx
+++ b/packages/app/components/auth/deviceCode/DeviceCode.tsx
@@ -22,7 +22,7 @@ const DeviceCode: FC<RouteComponentProps> = (props) => {
             Body={<DeviceCodeBody {...props} />}
             Footer={
                 <Button type="submit">
-                    <Message id="continue" defaultMessage="Cotinute" />
+                    <Message id="continue" defaultMessage="Continue" />
                 </Button>
             }
         />
diff --git a/packages/app/components/ui/form/Dropdown.tsx b/packages/app/components/ui/form/Dropdown.tsx
index 37628de..2095da9 100644
--- a/packages/app/components/ui/form/Dropdown.tsx
+++ b/packages/app/components/ui/form/Dropdown.tsx
@@ -39,11 +39,10 @@ export default class Dropdown extends FormInputComponent<Props, State> {
     };
 
     render() {
-        const { color, block, items, ...restProps } = this.props;
+        // eslint-disable-next-line @typescript-eslint/no-unused-vars
+        const { color, block, items, label: unusedLabel, ...restProps } = this.props;
         const { isActive } = this.state;
 
-        delete restProps.label;
-
         const activeItem = this.getActiveItem();
         const label = React.isValidElement(activeItem.label) ? activeItem.label : this.formatMessage(activeItem.label);
 
diff --git a/packages/scripts/build-dll.ts b/packages/scripts/build-dll.ts
index 0a48cc9..1b53d3a 100644
--- a/packages/scripts/build-dll.ts
+++ b/packages/scripts/build-dll.ts
@@ -32,7 +32,7 @@ Promise.all([stat(`${__dirname}/../../yarn.lock`), stat(`${__dirname}/../../dll/
 
         console.log('Rebuilding dlls...');
 
-        return new Promise((resolve, reject) => {
+        return new Promise<void>((resolve, reject) => {
             compiler.run((err, stats) => {
                 if (err) {
                     return reject(err);
diff --git a/tsconfig.json b/tsconfig.json
index 49122cf..22e7d17 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -9,7 +9,6 @@
         "esModuleInterop": true, // allow importing commonjs exports as default in es imports
         "moduleResolution": "node",
         "noEmit": true,
-        "checkJs": true,
         "allowJs": true,
         "skipLibCheck": true,
         "strictNullChecks": true,