Add concept of "preferred" lists

Preferred lists will be visually listed above other lists.

assets/assets.dev.json

@@ -155,6 +155,7 @@
 		"group": "ads",
 		"title": "EasyList",
 		"tags": "ads",
+        "preferred": true,
 		"contentURL": [
 			"https://ublockorigin.github.io/uAssets/thirdparties/easylist.txt",
 			"assets/thirdparties/easylist/easylist.txt"
@@ -205,6 +206,7 @@
 		"group": "privacy",
 		"title": "EasyPrivacy",
 		"tags": "privacy",
+        "preferred": true,
 		"contentURL": [
 			"https://ublockorigin.github.io/uAssets/thirdparties/easyprivacy.txt",
 			"assets/thirdparties/easylist/easyprivacy.txt"
@@ -281,6 +283,7 @@
 		"off": true,
 		"title": "EasyList – Cookie Notices",
 		"tags": "annoyances cookies",
+        "preferred": true,
 		"contentURL": [
 			"https://ublockorigin.github.io/uAssets/thirdparties/easylist-cookies.txt",
 			"https://secure.fanboy.co.nz/fanboy-cookiemonster_ubo.txt"
@@ -302,6 +305,7 @@
 		"off": true,
 		"title": "uBlock filters – Cookie Notices",
 		"tags": "annoyances cookies",
+        "preferred": true,
 		"contentURL": "https://ublockorigin.github.io/uAssets/filters/annoyances-cookies.txt",
 		"cdnURLs": [
 			"https://ublockorigin.github.io/uAssetsCDN/filters/annoyances-cookies.txt",
@@ -331,6 +335,7 @@
 		"off": true,
 		"title": "EasyList – Social Widgets",
 		"tags": "annoyances social",
+        "preferred": true,
 		"contentURL": [
 			"https://ublockorigin.github.io/uAssets/thirdparties/easylist-social.txt",
 			"https://secure.fanboy.co.nz/fanboy-social_ubo.txt"
@@ -405,6 +410,7 @@
 		"off": true,
 		"title": "EasyList – Other Annoyances",
 		"tags": "annoyances",
+        "preferred": true,
 		"contentURL": "https://ublockorigin.github.io/uAssets/thirdparties/easylist-annoyances.txt",
 		"cdnURLs": [
 			"https://ublockorigin.github.io/uAssetsCDN/thirdparties/easylist-annoyances.txt",
@@ -421,6 +427,7 @@
 		"off": true,
 		"title": "EasyList – Chat Widgets",
 		"tags": "annoyances",
+        "preferred": true,
 		"contentURL": "https://ublockorigin.github.io/uAssets/thirdparties/easylist-chat.txt",
 		"cdnURLs": [
 			"https://ublockorigin.github.io/uAssetsCDN/thirdparties/easylist-chat.txt",
@@ -437,6 +444,7 @@
 		"off": true,
 		"title": "EasyList – Newsletter Notices",
 		"tags": "annoyances",
+        "preferred": true,
 		"contentURL": [
 			"https://ublockorigin.github.io/uAssets/thirdparties/easylist-newsletters.txt"
 		],
@@ -455,6 +463,7 @@
 		"off": true,
 		"title": "EasyList – Notifications",
 		"tags": "annoyances",
+        "preferred": true,
 		"contentURL": [
 			"https://ublockorigin.github.io/uAssets/thirdparties/easylist-notifications.txt"
 		],
@@ -497,6 +506,7 @@
 		"updateAfter": 13,
 		"title": "Peter Lowe’s Ad and tracking server list",
 		"tags": "ads privacy security",
+        "preferred": true,
 		"contentURL": [
 			"https://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&showintro=1&mimetype=plaintext",
 			"assets/thirdparties/pgl.yoyo.org/as/serverlist.txt",

src/js/3p-filters.js

@@ -19,11 +19,9 @@
     Home: https://github.com/gorhill/uBlock
 */
 
-'use strict';
-
-import { onBroadcast } from './broadcast.js';
 import { dom, qs$, qsa$ } from './dom.js';
 import { i18n, i18n$ } from './i18n.js';
+import { onBroadcast } from './broadcast.js';
 
 /******************************************************************************/
 
@@ -32,6 +30,10 @@ const obsoleteTemplateString = i18n$('3pExternalListObsolete');
 const reValidExternalList = /^[a-z-]+:\/\/(?:\S+\/\S*|\/\S+)/m;
 const recentlyUpdated = 1 * 60 * 60 * 1000; // 1 hour
 
+// https://eslint.org/docs/latest/rules/no-prototype-builtins
+const hasOwnProperty = (o, p) =>
+    Object.prototype.hasOwnProperty.call(o, p);
+
 let listsetDetails = {};
 
 /******************************************************************************/
@@ -182,6 +184,9 @@ const renderFilterLists = ( ) => {
         if ( depth !== 0 ) {
             const reEmojis = /\p{Emoji}+/gu;
             treeEntries.sort((a ,b) => {
+                const ap = a[1].preferred === true;
+                const bp = b[1].preferred === true;
+                if ( ap !== bp ) { return ap ? -1 : 1; }
                 const as = (a[1].title || a[0]).replace(reEmojis, '');
                 const bs = (b[1].title || b[0]).replace(reEmojis, '');
                 return as.localeCompare(bs);
@@ -241,7 +246,7 @@ const renderFilterLists = ( ) => {
         }
         for ( const [ listkey, listDetails ] of Object.entries(response.available) ) {
             let groupkey = listDetails.group2 || listDetails.group;
-            if ( listTree.hasOwnProperty(groupkey) === false ) {
+            if ( hasOwnProperty(listTree, groupkey) === false ) {
                 groupkey = 'unknown';
             }
             const groupDetails = listTree[groupkey];
@@ -251,6 +256,9 @@ const renderFilterLists = ( ) => {
                     if ( lists[parent] === undefined ) {
                         lists[parent] = { title: parent, lists: {} };
                     }
+                    if ( listDetails.preferred === true ) {
+                        lists[parent].preferred = true;
+                    }
                     lists = lists[parent].lists;
                 }
                 lists[listkey] = listDetails;
@@ -596,7 +604,7 @@ const selectFilterLists = async ( ) => {
     const toRemove = [];
     for ( const liEntry of qsa$('#lists .listEntry[data-role="leaf"]') ) {
         const listkey = liEntry.dataset.key;
-        if ( listsetDetails.available.hasOwnProperty(listkey) === false ) {
+        if ( hasOwnProperty(listsetDetails.available, listkey) === false ) {
             continue;
         }
         const listDetails = listsetDetails.available[listkey];