import type { Ref } from 'vue';
/** Stable string keys, also compatible with hosts injecting the literal key. */
export declare const CHAT_MESSAGE_SEND_KEY = "chat-message-send";
export declare const CHAT_MESSAGE_CONTEXT_KEY = "chat-message-context";
/**
 * Provided by the embed to components rendered inside message content
 * (`customComponents`). Sends `content` as the user through the same path as
 * the composer, resolving the conversation's configured agent inputs — a
 * direct `useChat().sendMessage` call would skip that resolution. Resolves
 * `true` once the message is accepted (including into the outbound queue).
 */
export type ChatMessageSend = (content: string) => Promise<boolean>;
/** Provided per message bubble to components rendered inside its content. */
export interface ChatMessageContext {
    messageId: string;
    role: 'user' | 'assistant';
    /** True while this is the newest message in the conversation. */
    isLatestMessage: Readonly<Ref<boolean>>;
    /** True while this message's turn is still streaming. */
    streaming: Readonly<Ref<boolean>>;
}