export declare const SENSITIVE_SUBSTRINGS: string[];
/**
 * Determine if a string:
 * * is a url
 * * has potentially secret information, such as a password or querystring
 */
export declare const isUrlWithSecrets: (val: any) => boolean;
export declare const isSensitiveKey: (key: string) => boolean;
/**
 * Given a string:
 * * if it's a valid url, return a `string[]` of any extracted secrets. Only secret keys will be pulled from the querystring
 * * if it's not a valid url, return `null`
 */
export declare const extractSecretsFromUrl: (maybeUrlStr: string) => string[] | null;