export type SourceCode = {
    before: string;
    target: string;
    after: string;
};
/**
 * Extracts the surrounding lines of source code around a target node.
 *
 * @param filePath - Absolute path to the source file
 * @param startLine - 1-based start line of the target node
 * @param endLine - 1-based end line of the target node
 * @param n - Number of surrounding lines before and after to capture
 * @returns The surrounding lines, or undefined if the file can't be read
 */
export declare function extractSourceCode(filePath: string, startLine: number, endLine: number, n: number): SourceCode | undefined;