/**
 * Returns true for keys that name credentials, personal data, or recipient
 * addresses in any common spelling: plural, digit-suffixed, camelCase,
 * PascalCase, snake_case, kebab-case, split compounds (`api_key`, `e-mail`,
 * `mail_from`), and dotted paths such as `mail.source` or `api.key`.
 */
export declare function isSensitiveWebhookDataKey(key: string): boolean;
/**
 * Returns true when a string contains something shaped like an email address,
 * including the percent-encoded `%40` form used in URLs. Each candidate domain
 * is scanned once and the search resumes after it, so the work stays linear
 * in the input length.
 */
export declare function containsEmailAddress(value: string): boolean;