import type estree from 'estree';
import type { Assertion } from './assertions.js';
/**
 * Covers Cypress chain assertions like `cy.wrap(value).should('be.true')` or `cy.wrap(value).and('be.null')`.
 * The predicate is a Chai assertion string (dot-separated, optional `not.` prefix).
 */
export declare function extractCypressChainAssertion(node: estree.Node): Assertion | null;