diff --git a/src/ts/browserAction/loadSettings.ts b/src/ts/browserAction/loadSettings.ts
index 46c3bac5..733d2fb5 100644
--- a/src/ts/browserAction/loadSettings.ts
+++ b/src/ts/browserAction/loadSettings.ts
@@ -1,4 +1,6 @@
+// eslint-disable-next-line import-x/no-unassigned-import
 import "../components/settingsItem";
+// eslint-disable-next-line import-x/no-unassigned-import
 import "../components/settingsSeparator";
 import { DEFAULT_SETTINGS } from "../common/defaultSettings";
 import { SETTINGS_ITEMS } from "./settingsItems";
diff --git a/src/ts/browserAction/settingsItems.ts b/src/ts/browserAction/settingsItems.ts
index 1631d3c8..96a48cad 100644
--- a/src/ts/browserAction/settingsItems.ts
+++ b/src/ts/browserAction/settingsItems.ts
@@ -12,7 +12,7 @@ interface SettingsSeparator {
     type: "separator";
 }
 
-type SettingsItems = (SettingsItem | SettingsSeparator)[];
+type SettingsItems = Array<SettingsItem | SettingsSeparator>;
 
 const SETTINGS_ITEMS = [
     {
diff --git a/src/ts/components/sbsMessage.ts b/src/ts/components/sbsMessage.ts
index ee0a22ca..73e39411 100644
--- a/src/ts/components/sbsMessage.ts
+++ b/src/ts/components/sbsMessage.ts
@@ -1,3 +1,4 @@
+// eslint-disable-next-line import-x/no-unassigned-import
 import "@material/web/button/filled-button";
 import { LitElement, type PropertyValues, css, html } from "lit";
 import { customElement, property } from "lit/decorators.js";
@@ -181,7 +182,7 @@ class SbsMessage extends LitElement {
         </ul>`;
     }
 
-    private getNotes(): "" | ReturnType<typeof html>[] {
+    private getNotes(): "" | Array<ReturnType<typeof html>> {
         if (!this.notes.length) return "";
 
         const notesClasses = classMap({
@@ -236,4 +237,4 @@ declare global {
     }
 }
 
-export { SbsMessageDetails, SbsMessage };
+export { type SbsMessageDetails, SbsMessage };
diff --git a/src/ts/components/settingsItem.ts b/src/ts/components/settingsItem.ts
index de116dd8..1fc3a88f 100644
--- a/src/ts/components/settingsItem.ts
+++ b/src/ts/components/settingsItem.ts
@@ -1,3 +1,4 @@
+// eslint-disable-next-line import-x/no-unassigned-import
 import "@material/web/checkbox/checkbox.js";
 import { LitElement, css, html } from "lit";
 import { customElement, property, query } from "lit/decorators.js";
diff --git a/src/ts/core/core.ts b/src/ts/core/core.ts
index be3ccbf0..84f6803c 100644
--- a/src/ts/core/core.ts
+++ b/src/ts/core/core.ts
@@ -44,7 +44,7 @@ class Core {
         const sbsMessageWrapper = new SbsMessageWrapper(messageData);
 
         const bioOrUserName =
-            document.querySelector("[data-testid='UserDescription']") ||
+            document.querySelector("[data-testid='UserDescription']") ??
             document.querySelector("[data-testid='UserName']");
         if (!bioOrUserName) throw new Error("Failed to get user description of profile");
 
@@ -61,7 +61,7 @@ class Core {
         const sbsMessageWrapper = new SbsMessageWrapper(messageData);
 
         const landmarkElement =
-            tweet.element.querySelector<HTMLElement>("[data-testid='analyticsButton']")?.parentElement ||
+            tweet.element.querySelector<HTMLElement>("[data-testid='analyticsButton']")?.parentElement ??
             tweet.element.querySelector<HTMLElement>("div[role='group'][id]");
 
         if (!landmarkElement) throw new Error("Failed to get landmark element of tweet");
diff --git a/src/ts/core/propsAnalyzer.ts b/src/ts/core/propsAnalyzer.ts
index 9830dae9..88f02fef 100644
--- a/src/ts/core/propsAnalyzer.ts
+++ b/src/ts/core/propsAnalyzer.ts
@@ -86,4 +86,10 @@ const analyzeTombstoneProps = (props: [CellInnerDivProps, TombstoneGrandchildPro
     return tweetId;
 };
 
-export { ProfileAnalysisResult, TweetAnalysisResult, analyzeProfileProps, analyzeTweetProps, analyzeTombstoneProps };
+export {
+    type ProfileAnalysisResult,
+    type TweetAnalysisResult,
+    analyzeProfileProps,
+    analyzeTweetProps,
+    analyzeTombstoneProps
+};
diff --git a/src/ts/core/sbsMessageWrapper.ts b/src/ts/core/sbsMessageWrapper.ts
index de8e6290..5aa15573 100644
--- a/src/ts/core/sbsMessageWrapper.ts
+++ b/src/ts/core/sbsMessageWrapper.ts
@@ -1,3 +1,4 @@
+// eslint-disable-next-line import-x/no-unassigned-import
 import "../components/sbsMessage";
 import { SHADOW_TRANSLATION_ATTRIBUTE } from "../common/constants";
 // eslint-disable-next-line no-duplicate-imports
@@ -94,4 +95,4 @@ class SbsMessageWrapper {
     }
 }
 
-export { SbsMessageWrapperOptionsForTweets, SbsMessageWrapperOptionsForProfiles, SbsMessageWrapper };
+export { type SbsMessageWrapperOptionsForTweets, type SbsMessageWrapperOptionsForProfiles, SbsMessageWrapper };
diff --git a/src/ts/core/translationKeyProvider.ts b/src/ts/core/translationKeyProvider.ts
index cb69e960..52a85dd1 100644
--- a/src/ts/core/translationKeyProvider.ts
+++ b/src/ts/core/translationKeyProvider.ts
@@ -52,7 +52,7 @@ const formatCountryList = (countries: string[]): string => {
     });
     const translator = new Intl.DisplayNames([userLanguage], { type: "region" });
 
-    const translatedCountries = countries.map((country) => translator.of(country) || "");
+    const translatedCountries = countries.map((country) => translator.of(country) ?? "");
     const formattedText = listFormatter.format(translatedCountries);
 
     return formattedText;
diff --git a/src/ts/initialSetup.ts b/src/ts/initialSetup.ts
index abbca2d6..da9b7342 100644
--- a/src/ts/initialSetup.ts
+++ b/src/ts/initialSetup.ts
@@ -3,15 +3,15 @@ import type { Settings } from "../types/common/settings";
 import { Translator } from "./common/translator";
 import browser from "webextension-polyfill";
 
-type InitialSetupItem = {
-    options: {
+interface InitialSetupItem {
+    options: Array<{
         default: boolean;
         icon: string;
         label: string;
         value: boolean;
-    }[];
+    }>;
     settingsKey: keyof Settings;
-};
+}
 
 const INITIAL_SETUP_ITEMS = [
     {
diff --git a/src/ts/ossLicenses.ts b/src/ts/ossLicenses.ts
index c30c247b..41eeb72c 100644
--- a/src/ts/ossLicenses.ts
+++ b/src/ts/ossLicenses.ts
@@ -6,7 +6,7 @@ const normalizeRepositoryLink = (repository: string): string => {
         return repository.replace(/^git\+/u, "");
     }
 
-    if (!repository.match(/^https?:\/\//u)) {
+    if (!/^https?:\/\//u.exec(repository)) {
         return `https://github.com/${repository}`;
     }
 
diff --git a/src/ts/userScript/en.user.ts b/src/ts/userScript/en.user.ts
index 787e5433..f8a924bf 100644
--- a/src/ts/userScript/en.user.ts
+++ b/src/ts/userScript/en.user.ts
@@ -1,4 +1,4 @@
 import { createUserScript } from "./userScriptBase";
-import translation from "../../../src/_locales/en/messages.json";
+import translation from "../../_locales/en/messages.json";
 
 createUserScript(translation);
diff --git a/src/ts/userScript/ja.user.ts b/src/ts/userScript/ja.user.ts
index a0a5c4d7..a5f83d6d 100644
--- a/src/ts/userScript/ja.user.ts
+++ b/src/ts/userScript/ja.user.ts
@@ -1,4 +1,4 @@
 import { createUserScript } from "./userScriptBase";
-import translation from "../../../src/_locales/ja/messages.json";
+import translation from "../../_locales/ja/messages.json";
 
 createUserScript(translation);
diff --git a/src/ts/userScript/ko.user.ts b/src/ts/userScript/ko.user.ts
index c5a6ea3c..aed881ce 100644
--- a/src/ts/userScript/ko.user.ts
+++ b/src/ts/userScript/ko.user.ts
@@ -1,4 +1,4 @@
 import { createUserScript } from "./userScriptBase";
-import translation from "../../../src/_locales/ko/messages.json";
+import translation from "../../_locales/ko/messages.json";
 
 createUserScript(translation);
diff --git a/src/ts/userScript/userScriptBase.ts b/src/ts/userScript/userScriptBase.ts
index 99d25669..790368fe 100644
--- a/src/ts/userScript/userScriptBase.ts
+++ b/src/ts/userScript/userScriptBase.ts
@@ -1,3 +1,4 @@
+// eslint-disable-next-line import-x/no-unassigned-import
 import "../../css/style.css";
 import { Core } from "../core/core";
 import { DEFAULT_SETTINGS } from "../common/defaultSettings";
diff --git a/src/ts/userScript/zh_TW.user.ts b/src/ts/userScript/zh_TW.user.ts
index 32867b35..650959b6 100644
--- a/src/ts/userScript/zh_TW.user.ts
+++ b/src/ts/userScript/zh_TW.user.ts
@@ -1,4 +1,4 @@
 import { createUserScript } from "./userScriptBase";
-import translation from "../../../src/_locales/zh_TW/messages.json";
+import translation from "../../_locales/zh_TW/messages.json";
 
 createUserScript(translation);
diff --git a/src/types/common/translator.d.ts b/src/types/common/translator.d.ts
index e1769b94..092ea335 100644
--- a/src/types/common/translator.d.ts
+++ b/src/types/common/translator.d.ts
@@ -1,4 +1,4 @@
-import type enTranslation from "../../../src/_locales/en/messages.json";
+import type enTranslation from "../../_locales/en/messages.json";
 
 type TranslationData = typeof enTranslation;
 type TranslationKey = keyof TranslationData;
@@ -8,4 +8,4 @@ type TranslationFunction = (messageName: TranslationKey, substitutions?: string
 // eslint-disable-next-line no-magic-numbers
 type TranslationSubstitutions = Parameters<TranslationFunction>[1];
 
-export { TranslationData, TranslationKey, TranslationFunction, TranslationSubstitutions };
+export type { TranslationData, TranslationKey, TranslationFunction, TranslationSubstitutions };
diff --git a/src/types/core/reactProps/reactProps.d.ts b/src/types/core/reactProps/reactProps.d.ts
index 270b40ca..90081890 100644
--- a/src/types/core/reactProps/reactProps.d.ts
+++ b/src/types/core/reactProps/reactProps.d.ts
@@ -1,5 +1,5 @@
 /** @see {isCellInnerDivProps} ts-auto-guard:type-guard */
-export interface CellInnerDivProps {
+interface CellInnerDivProps {
     children: {
         _owner?: {
             key: string;
@@ -11,7 +11,7 @@ export interface CellInnerDivProps {
  * (tombstones' cell inner div) > div > div  <- This element is the tombstone's grandchild and has detailed information.
  * @see {isTombstoneGrandchildProps} ts-auto-guard:type-guard
  */
-export interface TombstoneGrandchildProps {
+interface TombstoneGrandchildProps {
     children: [
         {
             props: {
@@ -29,3 +29,5 @@ export interface TombstoneGrandchildProps {
         }
     ];
 }
+
+export type { CellInnerDivProps, TombstoneGrandchildProps };