Function writeFile

src/util/agent/fsOperations.ts:45–60

(
  filePath: string,
  content: string,
  rootDir: string,
)

 * (e.g., DSL-to-JS compilation) does not require additional gating.
 */
export async function writeFile(
  filePath: string,
  content: string,
  rootDir: string,
): Promise<string> {
  const resolved = await resolveAndValidate(filePath, rootDir);
  const ext = path.extname(resolved).toLowerCase();
  if (!ALLOWED_WRITE_EXTENSIONS.includes(ext)) {
    throw new Error(
      `Write rejected: only ${ALLOWED_WRITE_EXTENSIONS.join(', ')} files are allowed`,
    );
  }
  await fs.mkdir(path.dirname(resolved), { recursive: true });
  await fs.writeFile(resolved, content, 'utf-8');
  return resolved;
}

/**
 * Read a file relative to rootDir. Truncates returned text at MAX_FILE_SIZE