Function readTomlServerEntry

packages/cli/src/setup/mcp-writer.ts:126–161

(
  filePath: string,
  serverName: string
)

 * if the file or section is missing.
 */
export async function readTomlServerEntry(
  filePath: string,
  serverName: string
): Promise<Record<string, unknown> | undefined> {
  let raw: string;
  try {
    raw = await readFile(filePath, "utf-8");
  } catch {
    return undefined;
  }

  const sectionHeader = `[mcp_servers.${serverName}]`;
  const startIdx = raw.indexOf(sectionHeader);
  if (startIdx === -1) return undefined;

  // The top-level table's values live between its header and the next `[...]`
  // header (whether that's a sub-table like `[mcp_servers.foo.http_headers]`
  // or an unrelated section). Sub-table values belong to the sub-table, not
  // here, so excluding them is correct.
  const rest = raw.slice(startIdx + sectionHeader.length);
  const nextHeader = /^\[/m.exec(rest);
  const block = nextHeader ? rest.slice(0, nextHeader.index) : rest;

  const entry: Record<string, unknown> = {};
  const lineRe = /^([A-Za-z_][\w-]*)\s*=\s*(.+?)\s*$/gm;
  let lineMatch: RegExpExecArray | null;
  while ((lineMatch = lineRe.exec(block)) !== null) {
    const [, key, valueText] = lineMatch;
    try {
      entry[key] = JSON.parse(valueText);
    } catch {
      // Skip values we can't parse as JSON (e.g., bare TOML numbers like 20)
    }
  }
  return Object.keys(entry).length > 0 ? entry : undefined;
}

/**
 * True when `entry` looks like a stdio invocation of `@upstash/context7-mcp`