started to convert to typescript

back/utils/array.ts

@@ -0,0 +1,9 @@
+export function removeDuplicates(array: []) {
+    let unique = [];
+    for (let i = 0; i < array.length; i++) {
+        if (!unique.includes(array[i])) {
+            unique.push(array[i]);
+        }
+    }
+    return unique;
+}