/**
 * Importing npm packages
 */
/**
 * Importing user defined packages
 */
/**
 * Defining types
 */
export interface MaskOptions {
    /** Character to use for masking. Default: '*' */
    maskChar?: string;
    /** How many characters to keep at the start and end (of the whole string). */
    keepStart?: number;
    keepEnd?: number;
    /** Preserve spaces literally? Default: true */
    preserveSpaces?: boolean;
    /**
     * Preserve “separators” (non-alphanumeric punctuation like .-_/() etc)?
     * - true  → preserve all non-alphanumeric chars (except space, which is controlled by preserveSpaces)
     * - false → do not preserve (mask like normal)
     * - RegExp | string[] → only preserve matches of the regex or chars in the list
     * Default: false
     */
    preserveSeparators?: boolean | RegExp | string[];
    /** Ensure at least this many masked chars (helps with very short strings). Default: 0 */
    minMask?: number;
}