3 files changed, 3 insertions, 23 deletions
diff --git a/src/content/presenters/FindPresenter.ts b/src/content/presenters/FindPresenter.ts
index 117142c..b25190c 100644
--- a/src/content/presenters/FindPresenter.ts
+++ b/src/content/presenters/FindPresenter.ts
@@ -4,26 +4,6 @@ export default interface FindPresenter {
   clearSelection(): void;
 }
 
-// window.find(aString, aCaseSensitive, aBackwards, aWrapAround,
-//             aWholeWord, aSearchInFrames);
-//
-// NOTE: window.find is not standard API
-// https://developer.mozilla.org/en-US/docs/Web/API/Window/find
-interface MyWindow extends Window {
-  find(
-    aString: string,
-    aCaseSensitive?: boolean,
-    aBackwards?: boolean,
-    aWrapAround?: boolean,
-    aWholeWord?: boolean,
-    aSearchInFrames?: boolean,
-    aShowDialog?: boolean
-  ): boolean;
-}
-
-// eslint-disable-next-line no-var, vars-on-top, init-declarations
-declare var window: MyWindow;
-
 export class FindPresenterImpl implements FindPresenter {
   find(keyword: string, backwards: boolean): boolean {
     const caseSensitive = false;
diff --git a/src/content/repositories/ClipboardRepository.ts b/src/content/repositories/ClipboardRepository.ts
index a700543..20e7367 100644
--- a/src/content/repositories/ClipboardRepository.ts
+++ b/src/content/repositories/ClipboardRepository.ts
@@ -15,7 +15,7 @@ export class ClipboardRepositoryImpl {
     textarea.focus();
 
     const ok = window.document.execCommand("paste");
-    const value = textarea.textContent!!;
+    const value = textarea.textContent!;
     textarea.remove();
 
     if (!ok) {
diff --git a/src/content/usecases/FollowMasterUseCase.ts b/src/content/usecases/FollowMasterUseCase.ts
index 329f05a..88c682e 100644
--- a/src/content/usecases/FollowMasterUseCase.ts
+++ b/src/content/usecases/FollowMasterUseCase.ts
@@ -47,7 +47,7 @@ export default class FollowMasterUseCase {
     for (let i = 0; i < frameElements.length; ++i) {
       const ele = frameElements[i] as HTMLFrameElement | HTMLIFrameElement;
       const { left: frameX, top: frameY } = ele.getBoundingClientRect();
-      const client = this.followSlaveClientFactory.create(ele.contentWindow!!);
+      const client = this.followSlaveClientFactory.create(ele.contentWindow!);
       client.requestHintCount(
         { width: viewWidth, height: viewHeight },
         { x: frameX, y: frameY }
@@ -59,7 +59,7 @@ export default class FollowMasterUseCase {
   createSlaveHints(count: number, sender: Window): void {
     const produced = [];
     for (let i = 0; i < count; ++i) {
-      const tag = this.producer!!.produce();
+      const tag = this.producer!.produce();
       produced.push(tag);
       this.followMasterRepository.addTag(tag);
     }