/**
 * Truncates the raw value to `maxLength` characters. Counts every character of the raw
 * (post-sanitization, pre-format) string - digits, decimal separator, and a leading `-`.
 *
 * If truncation would leave a trailing decimal separator or a bare `-`, those are stripped
 * so the result is never a malformed intermediate state purely from the truncation itself.
 */
export declare function truncateToMaxLength(value: string, maxLength: number, decimalSeparator?: string): string;