import type { SendChatMessageContent, SendChatMessageOptions } from "../../utils/globals";
import type { ContentType } from "./types";
/** Metadata key for markdown stored as `content_type: text`. Must match dashboard `message-rendering.ts`. */
export declare const RICH_FORMAT_METADATA_KEY = "rich_format";
export declare const RICH_FORMAT_MARKDOWN = "markdown";
/** Must match `MESSAGE_SOURCE_METADATA_KEY` in app `message-source.ts`. */
export declare const MESSAGE_SOURCE_METADATA_KEY = "message_source";
export interface NormalizedOutgoingMessage {
    content: string;
    content_type: ContentType;
    metadata: Record<string, unknown>;
}
export declare function isRichUserMessage(message: {
    content_type: string;
    metadata?: Record<string, unknown>;
}): boolean;
/** Whether a stored message should use the rich HTML renderer in the widget. */
export declare function messageUsesRichRendering(message: {
    sender_type: string;
    content_type: string;
    metadata?: Record<string, unknown>;
}): boolean;
/**
 * Normalize integrator input into stored message fields.
 */
export declare function normalizeSendChatMessageContent(input: SendChatMessageContent, options?: SendChatMessageOptions): NormalizedOutgoingMessage | null;