import { MessageFunctionType, Result } from '../types';
export interface IsURLFragmentContainedErrors {
    URL_ARGUMENT_NOT_A_STRING: MessageFunctionType;
    FRAGMENT_ARGUMENT_NOT_A_STRING: MessageFunctionType;
}
export declare const IS_URL_FRAGMENT_CONTAINED_ERRORS: IsURLFragmentContainedErrors;
/**
 * Checks whether the `url` path
 * contains the `fragment` argument.
 *
 * Note that if the URL fragment does not
 * exist, then Javascript considers
 * the fragment to be an empty string or
 * ''.
 *
 * So if the fragment argument is also an
 * empty string, the validation result will
 * be true as an empty string contains and empty
 * string.
 *
 * Also Note that the validation of the url
 * argument should be performed before passing
 * the `url` argument to this validation.
 *
 * ### Example
 * ```
 * expect(isURLPathsEqual(urlA, "/aa/bb/").value).toBeTruthy();
 * ```
 * @param url The url string
 * @param path The path string
 */
export declare function isURLFragmentContained(url: string, fragment: string): Result<boolean | undefined>;