/**
 * Streaming tail repair — the "remend" step for the incremental markdown engine.
 *
 * The incremental parser calls {@link repairMarkdownTail} on the *unsettled tail*
 * of the stream before parsing it, so half-arrived syntax renders as its settled
 * form instead of flickering (a dangling `**bold` shows as bold immediately, not
 * as two literal asterisks that vanish on the next chunk).
 *
 * Hard invariant: on text that already ends in complete syntax the function is an
 * exact no-op (returns the input unchanged). That is what keeps the streamed end
 * state identical to a one-shot parse of the full source. The function is also
 * idempotent — `repairMarkdownTail(repairMarkdownTail(x)) === repairMarkdownTail(x)`.
 *
 * Scope: this operates on the CommonMark/GFM subset the engine renders. Raw HTML
 * is plain text here (no tag balancing), and `$$` math is ordinary text — neither
 * is repaired. Open fenced code blocks are left entirely untouched so the block
 * parser can keep rendering them as an open code block.
 */
/**
 * Repair the unsettled tail of a streamed markdown source: close unpaired inline
 * markers and drop half-arrived links/images. A no-op on complete syntax.
 */
export declare function repairMarkdownTail(text: string): string;