code cosmetics: fix some eslint complaints

Until https://github.com/eslint/eslint/issues/8594 is sorted out, we're switching to the old indent behavior (indent-legacy).

.eslintrc

@@ -93,7 +93,7 @@ rules:
   id-blacklist: [0]
   id-length: [0]
   id-match: [0]
-  indent: [2, 2, {VariableDeclarator: 0, SwitchCase: 1}]
+  indent-legacy: [2, 2, {VariableDeclarator: 0, SwitchCase: 1}]
   jsx-quotes: [0]
   key-spacing: [0]
   keyword-spacing: [2]

apply.js

@@ -60,7 +60,6 @@ function applyOnMessage(request, sender, sendResponse) {
   }
 
   switch (request.method) {
-
     case 'styleDeleted':
       removeStyle(request);
       break;

background.js

@@ -292,7 +292,6 @@ function updateIcon(tab, styles) {
 
 function onRuntimeMessage(request, sender, sendResponse) {
   switch (request.method) {
-
     case 'getStyles':
       getStyles(request).then(sendResponse);
       return KEEP_CHANNEL_OPEN;

backup/fileSaveLoad.js

@@ -378,8 +378,7 @@ Object.assign(document.body, {
       if (event.target === this) {
         this.ondragend();
       }
-    }
-    catch (e) {
+    } catch (e) {
       this.ondragend();
     }
   },

dom.js

@@ -58,7 +58,9 @@ function animateElement(
       element.removeEventListener('animationend', _);
       element.classList.remove(
         className,
-        ...removeExtraClasses // In Firefox, `resolve()` might be called one frame later. This is helpful to clean-up on the same frame
+        // In Firefox, `resolve()` might be called one frame later.
+        // This is helpful to clean-up on the same frame
+        ...removeExtraClasses
       );
       // TODO: investigate why animation restarts if the elements is removed in .then()
       if (remove) {

edit.js

@@ -1,4 +1,4 @@
-/* eslint no-tabs: 0, no-var: 0, indent: [2, tab, {VariableDeclarator: 0, SwitchCase: 1}], quotes: 0 */
+/* eslint no-tabs: 0, no-var: 0, indent-legacy: [2, tab, {VariableDeclarator: 0, SwitchCase: 1}], quotes: 0 */
 /* global CodeMirror */
 "use strict";
 

install.js

@@ -5,13 +5,13 @@ const FIREFOX = /Firefox/.test(navigator.userAgent);
 const VIVALDI = /Vivaldi/.test(navigator.userAgent);
 const OPERA = /OPR/.test(navigator.userAgent);
 
-document.addEventListener("stylishUpdate", onUpdateClicked);
-document.addEventListener("stylishUpdateChrome", onUpdateClicked);
-document.addEventListener("stylishUpdateOpera", onUpdateClicked);
+document.addEventListener('stylishUpdate', onUpdateClicked);
+document.addEventListener('stylishUpdateChrome', onUpdateClicked);
+document.addEventListener('stylishUpdateOpera', onUpdateClicked);
 
-document.addEventListener("stylishInstall", onInstallClicked);
-document.addEventListener("stylishInstallChrome", onInstallClicked);
-document.addEventListener("stylishInstallOpera", onInstallClicked);
+document.addEventListener('stylishInstall', onInstallClicked);
+document.addEventListener('stylishInstallChrome', onInstallClicked);
+document.addEventListener('stylishInstallOpera', onInstallClicked);
 
 chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {
   // orphaned content script check
@@ -126,7 +126,7 @@ new MutationObserver((mutations, observer) => {
   US.o does not provide "advanced settings" on this url if browser is not Chrome,
   we need to fix this URL using "stylish-update-url" meta key
 */
-function getStyleURL () {
+function getStyleURL() {
   const url = getMeta('stylish-code-chrome');
   // TODO: remove when USO is fixed
   const directUrl = getMeta('stylish-update-url');
@@ -176,8 +176,7 @@ function checkUpdatability([installedStyle]) {
 function sendEvent(type, detail = null) {
   if (FIREFOX) {
     type = type.replace('Chrome', '');
-  }
-  else if (OPERA || VIVALDI) {
+  } else if (OPERA || VIVALDI) {
     type = type.replace('Chrome', 'Opera');
   }
   detail = {detail};
@@ -336,13 +335,13 @@ function orphanCheck() {
   }
   // we're orphaned due to an extension update
   // we can detach event listeners
-  document.removeEventListener("stylishUpdate", onUpdateClicked);
-  document.removeEventListener("stylishUpdateChrome", onUpdateClicked);
-  document.removeEventListener("stylishUpdateOpera", onUpdateClicked);
+  document.removeEventListener('stylishUpdate', onUpdateClicked);
+  document.removeEventListener('stylishUpdateChrome', onUpdateClicked);
+  document.removeEventListener('stylishUpdateOpera', onUpdateClicked);
 
-  document.removeEventListener("stylishInstall", onInstallClicked);
-  document.removeEventListener("stylishInstallChrome", onInstallClicked);
-  document.removeEventListener("stylishInstallOpera", onInstallClicked);
+  document.removeEventListener('stylishInstall', onInstallClicked);
+  document.removeEventListener('stylishInstallChrome', onInstallClicked);
+  document.removeEventListener('stylishInstallOpera', onInstallClicked);
 
   // we can't detach chrome.runtime.onMessage because it's no longer connected internally
   // we can destroy global functions in this context to free up memory