Function formatError

scripts/lint-mermaid/lint-mermaid.mjs:126–133

(err, file, block)

}

function formatError(err, file, block) {
  const msg = err?.message || String(err);
  const match = msg.match(/Parse error on line (\d+)/i);
  const relLine = match ? parseInt(match[1], 10) : 1;
  const sourceLine = block.startLine + relLine;
  const head = msg.split('\n').slice(0, 6).join('\n    ');
  return `${file}:${sourceLine}: mermaid parse error\n    ${head}`;
}

async function lintFile(file) {
  const text = await readFile(file, 'utf8');