/**
 * Message types and public contracts.
 */
import type { VNode, ComponentPublicInstance, Ref, AppContext } from 'vue';
/**
 * Supported message variants.
 */
export declare const messageTypes: readonly ["success", "warning", "info", "error"];
export type MessageType = (typeof messageTypes)[number];
/**
 * Supported message placements.
 */
export declare const messagePlacements: readonly ["top", "top-left", "top-right", "bottom", "bottom-left", "bottom-right"];
export type MessagePlacement = (typeof messagePlacements)[number];
/**
 * Message component props.
 */
export interface MessageProps {
    /**
     * Message content.
     */
    message?: string | VNode;
    /**
     * Message variant.
     * @default 'info'
     */
    type?: MessageType;
    /**
     * Custom icon.
     */
    icon?: string | VNode;
    /**
     * Whether to show the close button.
     * @default false
     */
    showClose?: boolean;
    /**
     * Auto-close duration in milliseconds. Set to 0 to disable auto-close.
     * @default 3000
     */
    duration?: number;
    /**
     * Offset from the viewport edge in pixels.
     * @default 20
     */
    offset?: number;
    /**
     * Unique message id.
     */
    id?: string;
    /**
     * Render message content as raw HTML.
     * @default false
     */
    dangerouslyUseHTMLString?: boolean;
    /**
     * Whether to center the content.
     * @default false
     */
    center?: boolean;
    /**
     * Callback fired after the message closes.
     */
    onClose?: () => void;
    /**
     * z-index value.
     */
    zIndex?: number;
    /**
     * Custom CSS class.
     */
    customClass?: string;
    /**
     * Whether to merge messages with identical content.
     * @default false
     */
    grouping?: boolean;
    /**
     * Number of repeated grouped messages.
     */
    repeatNum?: number;
    /**
     * Message placement.
     * @default 'top'
     */
    placement?: MessagePlacement;
    /**
     * Component-level theme overrides.
     */
    themeOverrides?: import('@yh-ui/theme').ComponentThemeVars;
}
/**
 * Message component emits.
 */
export interface MessageEmits {
    (e: 'destroy'): void;
}
/**
 * Message component slots.
 */
export interface MessageSlots {
    /**
     * Message content slot.
     */
    default?: () => void;
    /**
     * Icon slot.
     */
    icon?: () => void;
}
/**
 * Exposed message instance methods.
 */
export interface MessageExpose {
    visible: Ref<boolean>;
    close: () => void;
}
/**
 * Message component instance.
 */
export type MessageInstance = ComponentPublicInstance<MessageExpose>;
/**
 * Message options accepted by the service API.
 */
export interface MessageOptions extends Partial<MessageProps> {
    /**
     * 应用上下文，用于继承全局配置/组件。
     */
    appContext?: AppContext | null;
    /**
     * 设置消息挂载的根元素，默认优先挂载到 .yh-config-provider，否则回退到 document.body。
     */
    appendTo?: string | HTMLElement;
}
/**
 * Message service handler.
 */
export interface MessageHandler {
    close: () => void;
    el?: HTMLElement;
    closed?: boolean;
}
/**
 * Internal message instance context.
 */
export interface MessageContext {
    id: string;
    props: MessageOptions;
    handler: MessageHandler;
    vnode: import('vue').VNode;
}
/**
 * Message service API.
 */
export type MessageFn = {
    (options: MessageOptions | string, appContext?: AppContext | null): MessageHandler;
    success: (message: string | MessageOptions, appContext?: AppContext | null) => MessageHandler;
    warning: (message: string | MessageOptions, appContext?: AppContext | null) => MessageHandler;
    info: (message: string | MessageOptions, appContext?: AppContext | null) => MessageHandler;
    error: (message: string | MessageOptions, appContext?: AppContext | null) => MessageHandler;
    closeAll: () => void;
};