refactor: clarify frontend module ownership

src/entities/bank-card/model/form-validation.ts

@@ -1,21 +1,11 @@
 import { moscowDate } from "@/shared/lib";
 
-const DECIMAL_PART_COUNT = 2;
-const CENTS_PRECISION = 2;
-
 const ISO_MONTH_LENGTH = 7;
 
 function bankDateInputValue(value: string) {
 	return value.replace(/^(\d{2})\.(\d{2})\.(\d{4})$/, "$3-$2-$1");
 }
 
-function bankMoneyValue(value: string) {
-	return value
-		.trim()
-		.replace(",", ".")
-		.replace(/^(-?)0+(?=\d)/, "$1");
-}
-
 function bankMonth(value: null | string) {
 	return value && value >= "0001-01" && /^\d{4}-(?:0[1-9]|1[0-2])$/.test(value)
 		? value
@@ -26,19 +16,4 @@ function bankToday() {
 	return moscowDate(new Date());
 }
 
-function moneyCents(value: string): bigint | null {
-	const normalized = value.trim().replace(",", ".");
-	if (!/^-?\d+$|^-?\d+\.\d{1,2}$/.test(normalized))
-		return null;
-
-	const [whole, fraction = ""] = normalized
-		.replace("-", "")
-		.split(".", DECIMAL_PART_COUNT);
-
-	return (
-		BigInt(`${whole}${fraction.padEnd(CENTS_PRECISION, "0")}`)
-		* (normalized.startsWith("-") ? -1n : 1n)
-	);
-}
-
-export { bankDateInputValue, bankMoneyValue, bankMonth, bankToday, moneyCents };
+export { bankDateInputValue, bankMonth, bankToday };