Added settings, enabled calendar

lib/utils/formatNumber.ts

@@ -0,0 +1,37 @@
+import { Settings } from "../types";
+
+function formatWithLocale(amount: number, useGrouping: boolean, maximumFractionDigits?: number): string {
+  return amount.toLocaleString(undefined, {
+    maximumFractionDigits,
+    useGrouping,
+  });
+}
+
+export function formatNumber({ amount, settings }: { amount: number, settings: Settings }): string {
+  const useFormatting = settings?.ui.useNumberFormatting ?? true;
+  const useGrouping = settings?.ui.useGrouping ?? true;
+
+  if (!useFormatting) {
+    return useGrouping ? formatWithLocale(amount, true) : amount.toString();
+  }
+
+  const absNum = Math.abs(amount);
+
+  if (absNum >= 1e12) {
+    return amount.toExponential(2);
+  }
+
+  if (absNum >= 1e9) {
+    return formatWithLocale(amount / 1e9, useGrouping, 1) + 'B';
+  }
+
+  if (absNum >= 1e6) {
+    return formatWithLocale(amount / 1e6, useGrouping, 1) + 'M';
+  }
+
+  if (absNum >= 1e3) {
+    return formatWithLocale(amount / 1e3, useGrouping, 1) + 'K';
+  }
+
+  return formatWithLocale(amount, useGrouping);
+}