feat(content): improve script

src/scripts/content.js

@@ -1,20 +1,15 @@
-if (!!window.chrome) {
+let attempts = 0;
-  let attempts = 0;
+let filters = [];
-  let filters = [];
-  const options = {
-    attributes: true,
-    childList: true,
-  };
 
-  const fix = () => {
+const fix = () => {
   const body = document.body.style;
   const html = document.documentElement.style;
 
   body.setProperty("overflow-y", "unset", "important");
   html.setProperty("overflow-y", "unset", "important");
-  };
+};
 
-  const retrieveElement = (match) => {
+const retrieveElement = (match) => {
   if (!match.includes("[") && !match.includes(">")) {
     if (match.startsWith(".")) {
       return document.getElementsByClassName(match.slice(1))[0];
@@ -28,46 +23,48 @@ if (!!window.chrome) {
   }
 
   return null;
-  };
+};
 
-  const removeFromCache = () => {
+const observe = () => {
+  observer.observe(document.body, {
+    attributes: true,
+    childList: true,
+  });
+};
+
+const removeFromCache = () => {
   chrome.storage.local.get([document.location.hostname], (value) => {
     const matches = value[document.location.hostname];
 
     if (matches && !!matches.length) {
-        matches.forEach((match) => {
+      for (let i = 0; i < matches.length; i++) {
-          const element = retrieveElement(match);
+        const element = retrieveElement(matches[i]);
         const tagName = element ? element.tagName.toUpperCase() : "";
 
         if (element && !["BODY", "HTML"].includes(tagName)) {
           element.remove();
         }
-        });
+      }
     }
   });
-  };
+};
 
-  const updateCache = (value) => {
+const updateCache = (value) => {
   chrome.storage.local.get([document.location.hostname], (store) => {
     const matches = store[document.location.hostname];
 
-      if (!!matches) {
-        if (!matches.includes(value)) {
     chrome.storage.local.set({
-            [document.location.hostname]: [...new Set([...matches, value])],
+      [document.location.hostname]: matches
+        ? [...new Set([...matches, value])]
+        : [value],
     });
-        }
-      } else {
-        chrome.storage.local.set({
-          [document.location.hostname]: [value],
   });
-      }
+};
-    });
-  };
 
-  const removeFromFilters = () => {
+const removeFromFilters = () => {
   if (attempts < 5) {
-      filters.forEach((match) => {
+    for (let i = 0; i < filters.length; i++) {
+      const match = filters[i];
       const element = retrieveElement(match);
       const tagName = element ? element.tagName.toUpperCase() : "";
 
@@ -75,26 +72,22 @@ if (!!window.chrome) {
         updateCache(match);
         element.remove();
       }
-      });
     }
-  };
+  }
+};
 
-  const observer = new MutationObserver((mutations, observer) => {
+const observer = new MutationObserver((mutations, observer) => {
   mutations.forEach(() => {
     observer.disconnect();
     fix();
     removeFromCache();
     removeFromFilters();
     attempts += 1;
-      observer.observe(document.body, options);
+    observe();
-    });
   });
+});
 
-  const observe = () => {
+(async () => {
-    observer.observe(document.body, options);
-  };
-
-  (async () => {
   const url = chrome.runtime.getURL("filters/index.txt");
   const db = await fetch(url).then((res) => res.text());
   filters = db.split("\n");
@@ -103,5 +96,4 @@ if (!!window.chrome) {
   removeFromCache();
   removeFromFilters();
   observe();
-  })();
+})();
-}