refactor(js): add jshint check for strict comparison

internal/ui/static/js/.jshintrc

@@ -1,6 +1,7 @@
 {
   "esversion": 11,
   "bitwise": true,
+  "eqeqeq": true,
   "freeze": true,
   "nonew": true,
   "latedef": "nofunc",

internal/ui/static/js/app.js

@@ -151,7 +151,7 @@ function handleEntryStatus(item, element, setToRead) {
     const toasting = !element;
     const currentEntry = findEntry(element);
     if (currentEntry) {
-        if (!setToRead || currentEntry.querySelector(":is(a, button)[data-toggle-status]").dataset.value == "unread") {
+        if (!setToRead || currentEntry.querySelector(":is(a, button)[data-toggle-status]").dataset.value === "unread") {
             toggleEntryStatus(currentEntry, toasting);
         }
         if (isListView() && currentEntry.classList.contains('current-item')) {
@@ -380,7 +380,7 @@ function openOriginalLink(openLinkInCurrentTab) {
 
         const currentItem = document.querySelector(".current-item");
         // If we are not on the list of starred items, move to the next item
-        if (document.location.href != document.querySelector(':is(a, button)[data-page=starred]').href) {
+        if (document.location.href !== document.querySelector(':is(a, button)[data-page=starred]').href) {
             goToListItem(1);
         }
         markEntryAsRead(currentItem);
@@ -522,9 +522,9 @@ function goToListItem(offset) {
             // By default adjust selection by offset
             let itemOffset = (i + offset + items.length) % items.length;
             // Allow jumping to top or bottom
-            if (offset == TOP) {
+            if (offset === TOP) {
                 itemOffset = 0;
-            } else if (offset == BOTTOM) {
+            } else if (offset === BOTTOM) {
                 itemOffset = items.length - 1;
             }
             const item = items[itemOffset];
@@ -595,7 +595,7 @@ function findEntry(element) {
 }
 
 function handleConfirmationMessage(linkElement, callback) {
-    if (linkElement.tagName != 'A' && linkElement.tagName != "BUTTON") {
+    if (linkElement.tagName !== 'A' && linkElement.tagName !== "BUTTON") {
         linkElement = linkElement.parentNode;
     }
 

internal/ui/static/js/bootstrap.js

@@ -57,7 +57,7 @@ document.addEventListener("DOMContentLoaded", () => {
         onClick("#webauthn-delete", () => { webauthnHandler.removeAllCredentials(); });
 
         const registerButton = document.getElementById("webauthn-register");
-        if (registerButton != null) {
+        if (registerButton !== null) {
             registerButton.disabled = false;
 
             onClick("#webauthn-register", () => {
@@ -66,13 +66,13 @@ document.addEventListener("DOMContentLoaded", () => {
         }
 
         const loginButton = document.getElementById("webauthn-login");
-        if (loginButton != null) {
+        if (loginButton !== null) {
             const abortController = new AbortController();
             loginButton.disabled = false;
 
             onClick("#webauthn-login", () => {
                 const usernameField = document.getElementById("form-username");
-                if (usernameField != null) {
+                if (usernameField !== null) {
                     abortController.abort();
                     webauthnHandler.login(usernameField.value).catch(err => WebAuthnHandler.showErrorMessage(err));
                 }
@@ -108,7 +108,7 @@ document.addEventListener("DOMContentLoaded", () => {
         handleEntryStatus("next", event.target, true);
     }, true);
     onAuxClick("a[data-original-link='true']", (event) => {
-        if (event.button == 1) {
+        if (event.button === 1) {
             handleEntryStatus("next", event.target, true);
         }
     }, true);

internal/ui/static/js/keyboard_handler.js

@@ -17,7 +17,7 @@ class KeyboardHandler {
                 return;
             }
 
-            if (key != "Enter") {
+            if (key !== "Enter") {
                 event.preventDefault();
             }
 

internal/ui/static/js/webauthn_handler.js

@@ -149,7 +149,7 @@ class WebAuthnHandler {
         }
         catch (err) {
             // Swallow aborted conditional logins
-            if (err instanceof DOMException && err.name == "AbortError") {
+            if (err instanceof DOMException && err.name === "AbortError") {
                 return;
             }
             WebAuthnHandler.showErrorMessage(err);