feat: added "exclude_repo" option to Top Langs (#493)

* 🚀 Added "exclude_repo" option to Top Langs

* chore: code style update

Co-authored-by: Anurag <hazru.anurag@gmail.com>

src/fetchers/top-languages-fetcher.js

@@ -11,6 +11,7 @@ const fetcher = (variables, token) => {
           # fetch only owner repos & not forks
           repositories(ownerAffiliations: OWNER, isFork: false, first: 100) {
             nodes {
+              name
               languages(first: 10, orderBy: {field: SIZE, direction: DESC}) {
                 edges {
                   size
@@ -33,7 +34,7 @@ const fetcher = (variables, token) => {
   );
 };
 
-async function fetchTopLanguages(username, langsCount = 5) {
+async function fetchTopLanguages(username, langsCount = 5, exclude_repo = []) {
   if (!username) throw Error("Invalid username");
 
   langsCount = clampValue(parseInt(langsCount), 1, 10);
@@ -46,6 +47,22 @@ async function fetchTopLanguages(username, langsCount = 5) {
   }
 
   let repoNodes = res.data.data.user.repositories.nodes;
+  let repoToHide = {};
+
+  // populate repoToHide map for quick lookup
+  // while filtering out
+  if (exclude_repo) {
+    exclude_repo.forEach((repoName) => {
+      repoToHide[repoName] = true;
+    });
+  }
+
+  // filter out repositories to be hidden
+  repoNodes = repoNodes
+    .sort((a, b) => b.size - a.size)
+    .filter((name) => {
+      return !repoToHide[name.name];
+    });
 
   repoNodes = repoNodes
     .filter((node) => {