Helpers

Formatting and utility functions you can use without the hook.

Mask helpers

Function	Description
`applyMask(value, mask)`	Applies a pattern to a raw value
`unmask(value, mask)`	Extracts data characters from a masked value
`stripMask(value, mask)`	At a locked mask step, keeps only data slots
`cleanValue(value, allowed?, forbidden?)`	Filters with allow / forbid regex

formatCurrency(value, options): raw "1234.56" → display (1,234.56 US default; customize separators for TR)
unformatCurrency(value, options): display → raw

getCardType(cardNumber) → "visa" | "mastercard" | "amex" | "troy" | "unknown". Works from BIN prefixes (Visa 4, Amex 34/37, Troy 9792…).

mergeRefs(...refs): merge the RHF register ref with a local ref. The hook uses this internally; useful on your own controlled inputs too.

Formatting and utility functions you can use without the hook.

Function	Description
`applyMask(value, mask)`	Applies a pattern to a raw value
`unmask(value, mask)`	Extracts data characters from a masked value
`stripMask(value, mask)`	At a locked mask step, keeps only data slots
`cleanValue(value, allowed?, forbidden?)`	Filters with allow / forbid regex

formatCurrency(value, options): raw "1234.56" → display (1,234.56 US default; customize separators for TR)
unformatCurrency(value, options): display → raw

getCardType(cardNumber) → "visa" | "mastercard" | "amex" | "troy" | "unknown". Works from BIN prefixes (Visa 4, Amex 34/37, Troy 9792…).

mergeRefs(...refs): merge the RHF register ref with a local ref. The hook uses this internally; useful on your own controlled inputs too.