diff --git a/src/content-script-tools/text-syncer.ts b/src/content-script-tools/text-syncer.ts
index ead13a2..02a2ed6 100644
--- a/src/content-script-tools/text-syncer.ts
+++ b/src/content-script-tools/text-syncer.ts
@@ -1,10 +1,10 @@
 import {
   IHandler,
-  Options,
-  UpdateTextPayload,
+  LoadedOptions,
   RegisterPayload,
   SocketPostPayloadMap,
   ClosedMessagePayload,
+  MessageEventData,
 } from '@/handlers/types';
 import { messager } from '@/content-script-tools/message';
 import { WS_URL } from '@/background-tools/ws-bridge';
@@ -29,7 +29,7 @@ class TextSyncer {
     url: string,
     title: string,
     handler: IHandler,
-    options?: Options,
+    options?: LoadedOptions,
   ) {
     const port = chrome.runtime.connect();
 
@@ -50,9 +50,9 @@ class TextSyncer {
    * @returns A function to be used as the onMessage event listener.
    */
   private makeMessageListener(handler: IHandler) {
-    return (msg: any) => {
-      if ((this as any)[msg.type]) {
-        return (this as any)[msg.type](handler, msg.payload);
+    return (msg: MessageEventData) => {
+      if (this[msg.type]) {
+        return this[msg.type](handler, msg.payload);
       }
       console.warn('Chrome Emacs received unknown message:', msg);
     };
@@ -62,7 +62,8 @@ class TextSyncer {
    * @param handler - The handler instance managing the text element.
    * @param payload - The payload containing the updated text.
    */
-  updateText(handler: IHandler, payload: UpdateTextPayload) {
+
+  updateText(handler: IHandler, payload: MessageEventData['payload']) {
     if (handler.setValue) {
       handler.setValue(payload.text, payload);
     }
@@ -107,7 +108,7 @@ class TextSyncer {
     url: string,
     title: string,
     handler: IHandler,
-    options?: Options,
+    options?: LoadedOptions,
   ) {
     options = options || {};
 
diff --git a/src/handlers/base.ts b/src/handlers/base.ts
index 0f783d0..f7e5876 100644
--- a/src/handlers/base.ts
+++ b/src/handlers/base.ts
@@ -3,7 +3,8 @@ import {
   IHandler,
   IContentEventsBinder,
   UpdateTextPayload,
-  Options,
+  LoadedOptions,
+  ValueSetEmitOptions,
 } from '@/handlers/types';
 
 /**
@@ -33,7 +34,7 @@ export default class BaseHandler extends EventEmitter implements IHandler {
   /**
    * Handler initialization or data loading.
    */
-  load(): Promise<Options> {
+  load(): Promise<LoadedOptions> {
     return Promise.resolve({});
   }
 
@@ -42,7 +43,7 @@ export default class BaseHandler extends EventEmitter implements IHandler {
    * @param value - The value to set.
    * @param options - Optional parameters.
    */
-  setValue(value: string, options?: UpdateTextPayload): void {
+  setValue(value: string, options?: ValueSetEmitOptions): void {
     this.emit('valueSet', value, options || {});
   }
 
diff --git a/src/handlers/codemirror5.ts b/src/handlers/codemirror5.ts
index 686f2de..39f0095 100644
--- a/src/handlers/codemirror5.ts
+++ b/src/handlers/codemirror5.ts
@@ -1,4 +1,5 @@
 import InjectorHandler from '@/handlers/injector';
+import { UpdateTextPayload } from '@/handlers/types';
 import type { IContentEventsBinder } from '@/handlers/injector';
 
 /**
@@ -18,7 +19,7 @@ class CodeMirror5Handler extends InjectorHandler {
    * @param value - The value to set in the CodeMirror editor.
    * @param options - Options to customize the value setting, including whether to trigger DOM events.
    */
-  setValue(value: string, options: any) {
+  setValue(value: string, options: UpdateTextPayload) {
     options = Object.assign({}, { triggerDOMEvent: false }, options);
     super.setValue(value, options);
   }
diff --git a/src/handlers/codemirror6.ts b/src/handlers/codemirror6.ts
index 37a5dbc..cedd1c5 100644
--- a/src/handlers/codemirror6.ts
+++ b/src/handlers/codemirror6.ts
@@ -1,5 +1,6 @@
 import InjectorHandler from '@/handlers/injector';
 import type { IContentEventsBinder } from '@/handlers/injector';
+import { UpdateTextPayload } from '@/handlers/types';
 
 /**
  * Handler class for interfacing with CodeMirror version 6 editors through InjectorHandler.
@@ -18,7 +19,7 @@ class CodeMirror6Handler extends InjectorHandler {
    * @param value - The value to set in the CodeMirror editor.
    * @param options - Options to customize the value setting, including whether to trigger DOM events.
    */
-  setValue(value: string, options: any) {
+  setValue(value: string, options: UpdateTextPayload) {
     options = Object.assign({}, { triggerDOMEvent: false }, options);
     super.setValue(value, options);
   }
diff --git a/src/handlers/injected/base.ts b/src/handlers/injected/base.ts
index 043abe1..3958744 100644
--- a/src/handlers/injected/base.ts
+++ b/src/handlers/injected/base.ts
@@ -1,5 +1,5 @@
 import {
-  Options,
+  LoadedOptions,
   UpdateTextPayload,
   PostToInjectorPayloadMap,
   BaseInjectedPostType,
@@ -139,7 +139,7 @@ export default class BaseInjectedHandler<Elem extends Element> {
   /**
    * Optionally returns data about the handler's capabilities. Designed to be overridden.
    */
-  getExtension(): Options['extension'] {
+  getExtension(): LoadedOptions['extension'] {
     return undefined;
   }
 
diff --git a/src/handlers/injector.ts b/src/handlers/injector.ts
index e46c4ca..652a391 100644
--- a/src/handlers/injector.ts
+++ b/src/handlers/injector.ts
@@ -3,7 +3,8 @@ import BaseHandler from '@/handlers/base';
 import {
   IContentEventsBinder,
   UpdateTextPayload,
-  Options,
+  ValueSetEmitOptions,
+  LoadedOptions,
   PostToInjectedPayloadMap,
 } from '@/handlers/types';
 import { getCssSelector } from '@/util/dom';
@@ -11,7 +12,7 @@ import { getCssSelector } from '@/util/dom';
 /**
  * A specialized handler extending BaseHandler for injecting and communicating with scripts.
  */
-export default class InjectorHandler extends BaseHandler {
+export default class nInjectorHandler extends BaseHandler {
   private name: string;
   private uuid: string;
   private _getValueCallback: ((payload: UpdateTextPayload) => void) | null;
@@ -51,7 +52,7 @@ export default class InjectorHandler extends BaseHandler {
 
   async load() {
     const elemSelector = getCssSelector(this.elem);
-    return new Promise<Options>((resolve) => {
+    return new Promise<LoadedOptions>((resolve) => {
       this.injectScript(() => {
         this.postToInjected('initialize', {
           name: this.name,
@@ -67,7 +68,7 @@ export default class InjectorHandler extends BaseHandler {
    * @param value - The value to set.
    * @param options - Optional parameters.
    */
-  setValue(value: string, options?: UpdateTextPayload): void {
+  setValue(value: string, options?: ValueSetEmitOptions): void {
     this.postToInjected('setValue', { text: value, ...options });
     super.setValue(value, options);
   }
diff --git a/src/handlers/textarea.ts b/src/handlers/textarea.ts
index 4f22ef6..b1e119c 100644
--- a/src/handlers/textarea.ts
+++ b/src/handlers/textarea.ts
@@ -1,5 +1,5 @@
 import BaseHandler from '@/handlers/base';
-import { UpdateTextPayload, Options } from '@/handlers/types';
+import { UpdateTextPayload, LoadedOptions } from '@/handlers/types';
 import { estimateParent, setSelectionRange } from '@/util/dom';
 
 class TextareaHandler extends BaseHandler {
@@ -56,7 +56,7 @@ class TextareaHandler extends BaseHandler {
     return estimateParent(this.elem);
   }
 
-  load(): Promise<Options> {
+  load(): Promise<LoadedOptions> {
     const parentEl = this.getVisualElement();
     const rect = parentEl?.getBoundingClientRect();
     const screenY = window.screenY;
diff --git a/src/handlers/types.ts b/src/handlers/types.ts
index f3631f3..b0b2dc3 100644
--- a/src/handlers/types.ts
+++ b/src/handlers/types.ts
@@ -29,13 +29,21 @@ export interface IPosition {
  */
 export interface UpdateTextPayload extends IPosition {
   text: string;
-  triggerDOMEvent?: boolean;
+}
+
+export interface MessageEventData {
+  type: 'updateText';
+  payload: UpdateTextPayload;
 }
 
 /**
  * Defines options for handler configuration.
  */
-export interface Options extends IPosition {
+export interface ValueSetEmitOptions extends UpdateTextPayload {
+  triggerDOMEvent?: boolean;
+}
+
+export interface LoadedOptions extends IPosition {
   extension?: string | string[] | null;
   rect?: DOMRect;
 }
@@ -47,14 +55,14 @@ export interface IHandler {
   /**
    * Loads data or performs an initialization operation.
    */
-  load(): Promise<Options>;
+  load(): Promise<LoadedOptions>;
 
   /**
    * Sets a value with optional settings.
    * @param value - The value to set.
    * @param options - Additional options.
    */
-  setValue(value: string, options?: UpdateTextPayload): void;
+  setValue(value: string, options?: ValueSetEmitOptions): void;
 
   /**
    * Retrieves the currently set value.
@@ -80,15 +88,15 @@ export interface IHandler {
 /**
  * Constructs handler objects capable of handling elements.
  */
-export interface IHandlerConstructor {
-  new (elem: Element, contentEvents: IContentEventsBinder): IHandler;
+export interface IHandlerConstructor<Elem = Element> {
+  new (elem: Elem, contentEvents: IContentEventsBinder): IHandler;
 
   /**
    * Determines if the handler can manage the provided element.
    * @param elem - The element to check.
    * @returns A boolean indicating if the handler can manage the element.
    */
-  canHandle(elem: Element): boolean;
+  canHandle(elem: Elem): boolean;
 }
 
 /**
@@ -104,7 +112,7 @@ export interface IContentEventsBinder {
 }
 
 export type PostToInjectorPayloadMap = {
-  ready: Options;
+  ready: LoadedOptions;
   value: UpdateTextPayload;
   change: {};
 };
@@ -113,7 +121,7 @@ export type BaseInjectedPostType = keyof PostToInjectorPayloadMap;
 
 export interface RegisterPayload
   extends UpdateTextPayload,
-    Omit<Options, 'rect'> {
+    Omit<LoadedOptions, 'rect'> {
   url: string;
   title: string;
   rect?: Record<keyof DOMRect, number>;