create-guilded-bot/packages/cli/lib/validateClient.ts

import * as logger from "../utils/logger";

export default function verify() {
  const NODE_VERSION = process.version.split("v")[1] as unknown as number;

  if (NODE_VERSION! >= 12) {
    logger.error(`Detected node ${NODE_VERSION}. At least node v12 required.`);
    process.exit(1);
  }
}