/**
 * Segment representing parts of a chat message that contain either raw text or an image prompt.
 *
 * @private internal helper of `<ChatMessageItem/>`
 */
export type ImagePromptSegment = ImagePromptTextSegment | ImagePromptImageSegment;
/**
 * Raw text segment that can be rendered as markdown.
 *
 * @private internal helper of `<ChatMessageItem/>`
 */
export type ImagePromptTextSegment = {
    type: 'text';
    content: string;
};
/**
 * Image prompt segment that needs to fire the image generation pipeline.
 *
 * @private internal helper of `<ChatMessageItem/>`
 */
export type ImagePromptImageSegment = {
    type: 'image';
    /**
     * Accessible alt text provided by the agent.
     */
    alt: string;
    /**
     * Prompt text that will be sent to the image generation API.
     */
    prompt: string;
};
/**
 * Splits a chat message into text and image prompt segments.
 *
 * @param content - Raw markdown string produced by the agent.
 * @returns Ordered list of segments that preserves the original message flow.
 *
 * @private internal helper of `<ChatMessageItem/>`
 */
export declare function splitMessageContentByImagePrompts(content: string): ReadonlyArray<ImagePromptSegment>;