Imported libraries, removed next-basics.

src/lib/utils.ts

@@ -0,0 +1,46 @@
+export function hook(
+  _this: { [x: string]: any },
+  method: string | number,
+  callback: (arg0: any) => void,
+) {
+  const orig = _this[method];
+
+  return (...args: any) => {
+    callback.apply(_this, args);
+
+    return orig.apply(_this, args);
+  };
+}
+
+export function sleep(ms: number | undefined) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+export function shuffleArray(a) {
+  const arr = a.slice();
+  for (let i = arr.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    const temp = arr[i];
+    arr[i] = arr[j];
+    arr[j] = temp;
+  }
+  return arr;
+}
+
+export function chunkArray(arr: any[], size: number) {
+  const chunks: any[] = [];
+
+  let index = 0;
+  while (index < arr.length) {
+    chunks.push(arr.slice(index, size + index));
+    index += size;
+  }
+
+  return chunks;
+}
+
+export function ensureArray(arr?: any) {
+  if (arr === undefined || arr === null) return [];
+  if (Array.isArray(arr)) return arr;
+  return [arr];
+}