import type { IMjmlStyleProps } from "@faire/mjml-react";
import type { Theme } from "../theme/themeTypes.js";
import type { css } from "../utils/css.js";
export type StylesPayload = ReturnType<typeof css> | ((theme: Theme) => ReturnType<typeof css>);
type MjmlStyleOptions = Partial<Omit<IMjmlStyleProps, "children">>;
interface StyleRegistryEntry {
    styles: StylesPayload;
    mjmlStyleProps?: MjmlStyleOptions;
}
/**
 * Registers CSS styles that will be rendered in the email head as `<mj-style>` elements.
 *
 * Styles can be static CSS strings (via the `css` tagged template) or functions that
 * receive the theme and return a CSS string.
 */
export declare function registerStyles(styles: StylesPayload, mjmlStyleProps?: MjmlStyleOptions): void;
/** Returns all registered style entries. */
export declare function getRegisteredStyles(): ReadonlyMap<StylesPayload, StyleRegistryEntry>;
export {};