import { StreamCacheTokenType, XMarkdownProps } from '../interface';
export interface StreamCache {
    pending: string;
    token: StreamCacheTokenType;
    processedLength: number;
    completeMarkdown: string;
    fence: FenceState;
}
/**
 * Incremental fenced-code-block state over the processed text, updated in O(1)
 * per character. Recomputing over the full accumulated text on every character
 * is O(N²) and freezes the page on long single-line content such as base64
 * image data URIs.
 */
interface FenceState {
    /** Inside an open fence, considering completed lines only */
    inFenced: boolean;
    fenceChar: string;
    fenceLen: number;
    /** Leading `/~ run of the current (incomplete) line */
    lineFenceChar: string;
    lineFenceLen: number;
    lineFenceRunEnded: boolean;
    /** Whether every char after the leading run is whitespace (closing fences allow only whitespace) */
    lineTailBlank: boolean;
}
declare const useStreaming: (input: string, config?: {
    streaming: XMarkdownProps['streaming'];
    components?: XMarkdownProps['components'];
}) => string;
export default useStreaming;