/**
 * Parse GitHub review-comment "suggestion" blocks.
 *
 * GitHub's "Commit suggestion" UI button treats the first ```suggestion fenced
 * block in a review comment as a replacement for the commented line range.
 * This module extracts that block from the comment body.
 *
 * There is no GitHub API for applying suggestions — tools that reproduce the
 * button (this one included) must parse + commit themselves.
 */
interface ParsedSuggestion {
    /**
     * Replacement lines to splice in. Empty array means "delete these lines".
     * `[""]` means "replace with a single blank line". Array length equals the
     * number of replacement lines in the suggestion snippet (not the number of
     * lines in the resulting file).
     */
    lines: readonly string[];
}
/**
 * Return the first ```suggestion block from a review-comment body, or null if none.
 *
 * Handles three distinct cases:
 *   - Empty block (` ```suggestion\n``` `) → `lines: []` (deletion).
 *   - Blank-line-only body (` ```suggestion\n\n``` `) → `lines: [""]`.
 *   - Non-empty body → split into lines.
 *
 * The opening fence may be 3+ backticks; the closing fence must be at least
 * as many backticks, at the start of a line (after the captured prefix). This
 * means content lines that contain ` ``` ` in the middle (not at line-start)
 * are treated as content rather than a closing fence — fixing the silent
 * truncation in the original regex approach (issue #68).
 *
 * When the block is embedded in a quoted reply (e.g. `> ```suggestion …`),
 * the leading prefix captured from the opening fence is stripped from each
 * body line — but only when that exact prefix is present, so legitimate `>`
 * characters inside the suggested code survive.
 */
export declare function parseSuggestion(body: string): ParsedSuggestion | null;
/**
 * True when a parsed suggestion's replacement is safe to commit: the joined
 * replacement contains no nested ` ```suggestion ` marker and no unmatched
 * ` ``` ` run (odd count). Both shapes previously masked silent truncation
 * (issue #68). Conservative by design: reviewers whose suggestion content
 * legitimately includes these markers must apply the change manually.
 */
export declare function isCommittableSuggestion(parsed: ParsedSuggestion): boolean;
export {};