export let fieldsNeeded: string[];
/**
 * @param {String|null} visitorIP
 *        A v4 or v6 IP address for the visitor, if one is known.
 * @param {Object} cond
 * @returns {Boolean|undefined}
 *        Whether the given address satisfies the given condition.
 *        Undefined, if the condition specifies an invalid CIDR or regex pattern, or
 *        if the visitorIP was unknown.
 */
export function match(visitorIP: string | null, cond: Object): boolean | undefined;
