Reformat code

src/app/utils/hash.ts

@@ -0,0 +1,14 @@
+export const hashCode = (text: string) => {
+  let hash = 0;
+  if (text.length == 0) {
+    return hash;
+  }
+  for (let i = 0; i < text.length; i++) {
+    const char = text.charCodeAt(i);
+    hash = (hash << 5) - hash + char;
+    hash = hash & hash;
+  }
+
+  hash /= Math.pow(2, 32) - 1;
+  return hash;
+};

src/app/utils/range.ts

@@ -0,0 +1,7 @@
+export const range = ({ min = 0, max = Infinity, step = 1 }: { min?: number; max?: number; step?: number }) => {
+  return {
+    *[Symbol.iterator]() {
+      for (let i = min; i < max; yield i, i += step);
+    }
+  };
+};

src/app/utils/top.ts

@@ -0,0 +1,3 @@
+export const top = <T>(iterable: ArrayLike<T>): T => {
+  return iterable.length > 0 ? iterable[iterable.length - 1] : null;
+};