Featured: sort question

Author: vitaly.basaraba

sort.js

@@ -0,0 +1,29 @@
+const path = require('path');
+
+const data = require(path.resolve(__dirname, 'question.json'));
+
+function sortAndFilterUniqueLinks(arr) {
+    const seenLinks = new Set();
+    
+    // Filter objects with unique links
+    const filteredArr = arr.filter(obj => {
+        if (obj.link && !seenLinks.has(obj.link)) {
+            seenLinks.add(obj.link);
+            return true;
+        }
+        return false;
+    });
+
+    // Sort the filtered array by link alphabetically
+    return filteredArr.sort((a, b) => {
+        if (a.link < b.link) return -1;
+        if (a.link > b.link) return 1;
+        return 0;
+    });
+}
+
+const old = data.filter(({link}) => !link);
+const newData = sortAndFilterUniqueLinks(data.filter(({link}) => link));
+const work = [...old, ...newData];
+
+console.log(JSON.stringify(work));