/**
 * Identify genuine GFM table rows in a markdown document. A row counts as
 * a table row when it is part of a block that includes a separator row of
 * the form `|---|---|` (pipes + dashes, optional colons for alignment).
 * Stray `|` characters inside paragraphs are ignored. Lines inside fenced
 * or indented code blocks are ignored — `| Foo | Bar |` lines inside a
 * `` ```markdown `` example are content, not real tables.
 */
export declare function findTableRows(lines: string[]): Set<number>;