Refactored many helpers to Typescript

src/utils/helpers/numbers.ts

@@ -0,0 +1,7 @@
+const TEN_ROUNDING_NUMBER = 10;
+const { ceil } = Math;
+const formatter = new Intl.NumberFormat('en-US');
+
+export const prettify = (number: number) => formatter.format(number);
+
+export const roundTen = (number: number) => ceil(number / TEN_ROUNDING_NUMBER) * TEN_ROUNDING_NUMBER;