diff --git a/lib/renderer/web-view/web-view-attributes.ts b/lib/renderer/web-view/web-view-attributes.ts
index 07030b7015f7..68425a3ecbef 100644
--- a/lib/renderer/web-view/web-view-attributes.ts
+++ b/lib/renderer/web-view/web-view-attributes.ts
@@ -11,9 +11,13 @@ const resolveURL = function (url?: string | null) {
   return a.href
 }
 
+interface MutationHandler {
+  handleMutation (_oldValue: any, _newValue: any): any;
+}
+
 // Attribute objects.
 // Default implementation of a WebView attribute.
-class WebViewAttribute {
+class WebViewAttribute implements MutationHandler {
   public value: any;
   public ignoreMutation = false;
 
@@ -55,7 +59,7 @@ class WebViewAttribute {
   }
 
   // Called when the attribute's value changes.
-  public handleMutation (..._args: Array<any>): any {}
+  public handleMutation: MutationHandler['handleMutation'] = () => undefined as any
 }
 
 // An attribute that is treated as a Boolean.
@@ -81,7 +85,7 @@ class PartitionAttribute extends WebViewAttribute {
     super(WEB_VIEW_CONSTANTS.ATTRIBUTE_PARTITION, webViewImpl)
   }
 
-  public handleMutation (oldValue: any, newValue: any) {
+  public handleMutation = (oldValue: any, newValue: any) => {
     newValue = newValue || ''
 
     // The partition cannot change if the webview has already navigated.
@@ -124,7 +128,7 @@ class SrcAttribute extends WebViewAttribute {
     this.observer.takeRecords()
   }
 
-  public handleMutation (oldValue: any, newValue: any) {
+  public handleMutation = (oldValue: any, newValue: any) => {
     // Once we have navigated, we don't allow clearing the src attribute.
     // Once <webview> enters a navigated state, it cannot return to a
     // placeholder state.
diff --git a/lib/renderer/web-view/web-view-element.ts b/lib/renderer/web-view/web-view-element.ts
index 26ac4e0badf1..098dca0ff8c8 100644
--- a/lib/renderer/web-view/web-view-element.ts
+++ b/lib/renderer/web-view/web-view-element.ts
@@ -9,7 +9,7 @@
 // modules must be passed from outside, all included files must be plain JS.
 
 import { WEB_VIEW_CONSTANTS } from '@electron/internal/renderer/web-view/web-view-constants'
-import { WebViewImpl, webViewImplModule } from '@electron/internal/renderer/web-view/web-view-impl'
+import { WebViewImpl as IWebViewImpl, webViewImplModule } from '@electron/internal/renderer/web-view/web-view-impl'
 
 // Return a WebViewElement class that is defined in this context.
 const defineWebViewElement = (v8Util: NodeJS.V8UtilBinding, webViewImpl: typeof webViewImplModule) => {
@@ -41,7 +41,7 @@ const defineWebViewElement = (v8Util: NodeJS.V8UtilBinding, webViewImpl: typeof
     }
 
     connectedCallback () {
-      const internal = v8Util.getHiddenValue<WebViewImpl>(this, 'internal')
+      const internal = v8Util.getHiddenValue<IWebViewImpl>(this, 'internal')
       if (!internal) {
         return
       }
@@ -53,14 +53,14 @@ const defineWebViewElement = (v8Util: NodeJS.V8UtilBinding, webViewImpl: typeof
     }
 
     attributeChangedCallback (name: string, oldValue: any, newValue: any) {
-      const internal = v8Util.getHiddenValue<WebViewImpl>(this, 'internal')
+      const internal = v8Util.getHiddenValue<IWebViewImpl>(this, 'internal')
       if (internal) {
         internal.handleWebviewAttributeMutation(name, oldValue, newValue)
       }
     }
 
     disconnectedCallback () {
-      const internal = v8Util.getHiddenValue<WebViewImpl>(this, 'internal')
+      const internal = v8Util.getHiddenValue<IWebViewImpl>(this, 'internal')
       if (!internal) {
         return
       }