require FF >= 55

background/background.js

@@ -176,12 +176,6 @@ chrome.runtime.onInstalled.addListener(({reason, previousVersion}) => {
     if (UA.mobile) prefs.set('manage.newUI', false);
     if (UA.windows) prefs.set('editor.keyMap', 'sublime');
   }
-  if (reason === 'update') {
-    const [a, b, c] = (previousVersion || '').split('.');
-    if (a <= 1 && b <= 5 && c <= 13) { // 1.5.13
-      require(['/background/remove-unused-storage']);
-    }
-  }
   // TODO: remove this before 1.5.23 as it's only for a few users who installed git 26b75e77
   if (reason === 'update' && previousVersion === '1.5.22') {
     for (const dbName of ['drafts', prefs.STORAGE_KEY]) {

background/remove-unused-storage.js

@@ -1,15 +0,0 @@
-/* global chromeLocal */// storage-util.js
-'use strict';
-
-// Removing unused stuff from storage on extension update
-// TODO: delete this by the middle of 2021
-
-try {
-  localStorage.clear();
-} catch (e) {}
-
-setTimeout(async () => {
-  const del = Object.keys(await chromeLocal.get())
-    .filter(key => key.startsWith('usoSearchCache'));
-  if (del.length) chromeLocal.remove(del);
-}, 15e3);

content/apply.js

@@ -43,17 +43,14 @@
   /* about:blank iframes are often used by sites for file upload or background tasks
    * and they may break if unexpected DOM stuff is present at `load` event
    * so we'll add the styles only if the iframe becomes visible */
-  const {IntersectionObserver} = window;
   const xoEventId = `${Math.random()}`;
   /** @type IntersectionObserver */
   let xo;
-  if (IntersectionObserver) {
-    window[Symbol.for('xo')] = (el, cb) => {
-      if (!xo) xo = new IntersectionObserver(onIntersect, {rootMargin: '100%'});
-      el.addEventListener(xoEventId, cb, {once: true});
-      xo.observe(el);
-    };
-  }
+  window[Symbol.for('xo')] = (el, cb) => {
+    if (!xo) xo = new IntersectionObserver(onIntersect, {rootMargin: '100%'});
+    el.addEventListener(xoEventId, cb, {once: true});
+    xo.observe(el);
+  };
 
   // Declare all vars before init() or it'll throw due to "temporal dead zone" of const/let
   const ready = init();
@@ -246,11 +243,7 @@
   }
 
   function onFrameElementInView(cb) {
-    if (IntersectionObserver) {
-      parent[parent.Symbol.for('xo')](frameElement, cb);
-    } else {
-      requestAnimationFrame(cb);
-    }
+    parent[parent.Symbol.for('xo')](frameElement, cb);
   }
 
   /** @param {IntersectionObserverEntry[]} entries */

edit/codemirror-factory.js

@@ -32,7 +32,7 @@
 
     globalSetOption(key, value) {
       CodeMirror.defaults[key] = value;
-      if (cms.size > 4 && lazyOpt && lazyOpt.names.includes(key)) {
+      if (cms.size > 4 && lazyOpt.names.includes(key)) {
         lazyOpt.set(key, value);
       } else {
         cms.forEach(cm => cm.setOption(key, value));
@@ -104,7 +104,7 @@
 
   // lazy propagation
 
-  lazyOpt = window.IntersectionObserver && {
+  lazyOpt = {
     names: ['theme', 'lineWrapping'],
     set(key, value) {
       const {observer, queue} = lazyOpt;

edit/embedded-popup.js

@@ -60,14 +60,9 @@
     const body = pw.document.body;
     pw.on('keydown', removePopupOnEsc);
     pw.close = removePopup;
-    if (pw.IntersectionObserver) {
-      new pw.IntersectionObserver(onIntersect).observe(body.appendChild(
-        $create('div', {style: {height: '1px', marginTop: '-1px'}})
-      ));
-    } else {
-      frame.dataset.loaded = '';
-      frame.height = body.scrollHeight;
-    }
+    new pw.IntersectionObserver(onIntersect).observe(body.appendChild(
+      $create('div', {style: {height: '1px', marginTop: '-1px'}})
+    ));
     new pw.MutationObserver(onMutation).observe(body, {
       attributes: true,
       attributeFilter: ['style'],

edit/sections-editor.js

@@ -16,8 +16,7 @@ function SectionsEditor() {
   const container = $('#sections');
   /** @type {EditorSection[]} */
   const sections = [];
-  const xo = window.IntersectionObserver &&
-    new IntersectionObserver(refreshOnViewListener, {rootMargin: '100%'});
+  const xo = new IntersectionObserver(refreshOnViewListener, {rootMargin: '100%'});
   let INC_ID = 0; // an increment id that is used by various object to track the order
   let sectionOrder = '';
   let headerOffset; // in compact mode the header is at the top so it reduces the available height
@@ -632,7 +631,7 @@ function SectionsEditor() {
     if (code) {
       linterMan.enableForEditor(cm, code);
     }
-    if (force || !xo) {
+    if (force) {
       refreshOnViewNow(cm);
     } else {
       xo.observe(cm.display.wrapper);

global.css

@@ -359,20 +359,6 @@ body.resizing-v > * {
 }
 
 @supports (-moz-appearance: none) {
-  .moz-appearance-bug .svg-icon.checked,
-  .moz-appearance-bug .onoffswitch input,
-  .moz-appearance-bug input[type="radio"]:after {
-    display: none !important;
-  }
-
-  .moz-appearance-bug input[type="checkbox"] {
-    -moz-appearance: checkbox !important;
-  }
-
-  .moz-appearance-bug input[type="radio"] {
-    -moz-appearance: radio !important;
-  }
-
   .firefox select {
     padding: 0 20px 0 2px;
     line-height: var(--input-height)!important;
@@ -400,10 +386,6 @@ body.resizing-v > * {
     border: 1px solid hsl(0, 0%, 66%);
     padding: 4px;
   }
-
-  .firefox.moz-appearance-bug button:not(.install) {
-    padding: 2px 4px;
-  }
 }
 
 @media (max-width: 850px) {

js/toolbox.js

@@ -46,15 +46,13 @@ const [CHROME, UA] = (() => {
 // see PR #781
 const CHROME_POPUP_BORDER_BUG = CHROME >= 62 && CHROME <= 74;
 
-if (!CHROME && !chrome.browserAction.openPopup) {
+if (FIREFOX && !chrome.browserAction.openPopup) {
   // in FF pre-57 legacy addons can override useragent so we assume the worst
   // until we know for sure in the async getBrowserInfo()
   // (browserAction.openPopup was added in 57)
-  FIREFOX = browser.runtime.getBrowserInfo ? 51 : 50;
-  // getBrowserInfo was added in FF 51
-  Promise.resolve(FIREFOX >= 51 ? browser.runtime.getBrowserInfo() : {version: 50}).then(info => {
+  FIREFOX = 55; // from strict_min_version
+  browser.runtime.getBrowserInfo().then(info => {
     FIREFOX = parseFloat(info.version);
-    document.documentElement.classList.add('moz-appearance-bug', FIREFOX && FIREFOX < 54);
   });
 }
 

manifest.json

@@ -101,7 +101,7 @@
   "applications": {
     "gecko": {
       "id": "{7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}",
-      "strict_min_version": "53.0"
+      "strict_min_version": "55.0"
     }
   },
   "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2ypG+Z/beZtoYrxxwXYhMwQiAiwRVnSHqdpOSzJdjsXVWdvJjlgEuZcU8kte75w58P45LsRUrwvU6N9x12S6eW84KNEBC8rlZj0RGNoxuhSAcdxneYzjJ9tBkZKOidVedYHHsi3LeaXiLuTNTBR+2lf3uCNcP0ebaFML9uDLdYTGEW4eL3hnEKYPSmT1/xkh4bSGTToCg4YNuWWWoTA0beEOpBWYkPVMarLDQgPzMN5Byu5w3lOS2zL0PPJcmdyk3ez/ZsB4PZKU+h17fVA6+YTvUfxUqLde5i2RiuZhEb6Coo5/W90ZW1yCDC9osjWrxMGYeUMQWHPIgFtDhk4K6QIDAQAB"

popup/search.js

@@ -256,7 +256,7 @@
     if (results.length && 'empty' in dom.container.dataset) {
       delete dom.container.dataset.empty;
     }
-    if (scrollToFirstResult && (!FIREFOX || FIREFOX >= 55)) {
+    if (scrollToFirstResult) {
       debounce(doScrollToFirstResult);
     }
     // navigation