Fix idbStorage.keys()

Related commit:
https://github.com/gorhill/uBlock/commit/d4efaf020b

src/js/assets.js

@@ -790,7 +790,7 @@ async function assetCacheRemove(pattern, options = {}) {
     }
     if ( options.janitor && pattern instanceof RegExp ) {
         const re = new RegExp(
-            pattern.source.replace(/^\^/, 'cache\/'),
+            pattern.source.replace(/^\^/, '^cache\\/'),
             pattern.flags
         );
         const keys = await cacheStorage.keys(re);

src/js/cachestorage.js

@@ -546,7 +546,7 @@ const idbStorage = (( ) => {
         });
     };
 
-    const getAllKeys = async function() {
+    const getAllKeys = async function(regex) {
         const db = await getDb();
         if ( db === null ) { return []; }
         return new Promise(resolve => {
@@ -562,6 +562,7 @@ const idbStorage = (( ) => {
             req.onsuccess = ev => {
                 const cursor = ev.target && ev.target.result;
                 if ( !cursor ) { return; }
+                if ( regex && regex.test(cursor.key) === false ) { return; }
                 keys.push(cursor.key);
                 cursor.continue();
             };
@@ -685,8 +686,8 @@ const idbStorage = (( ) => {
             return setEntries(bin);
         },
 
-        keys() {
-            return getAllKeys();
+        keys(...args) {
+            return getAllKeys(...args);
         },
 
         remove(...args) {

src/js/start.js

@@ -232,8 +232,7 @@ const onUserSettingsReady = fetched => {
         fetched.importedLists.length === 0 &&
         fetched.externalLists !== ''
     ) {
-        fetched.importedLists =
-            fetched.externalLists.trim().split(/[\n\r]+/);
+        fetched.importedLists = fetched.externalLists.trim().split(/[\n\r]+/);
     }
 
     fromFetch(µb.userSettings, fetched);