Function isFirecracker

packages/cli/src/telemetry/agent_runtime.ts:287–298

* AWS Firecracker microVMs expose /dev/vsock and report sys_vendor='Amazon EC2' * with product_name containing 'Firecracker'. Full EC2 reports a real instance * type like 't3.large', so the product_name check distinguishes them.

()

 * type like 't3.large', so the product_name check distinguishes them.
 */
function isFirecracker(): boolean {
  if (platform() !== "linux") return false;
  if (!existsSync("/dev/vsock")) return false;
  try {
    const sysVendor = readFileSync("/sys/class/dmi/id/sys_vendor", "utf-8").trim();
    if (sysVendor !== "Amazon EC2") return false;
    const productName = readFileSync("/sys/class/dmi/id/product_name", "utf-8").trim();
    return productName.toLowerCase().includes("firecracker");
  } catch {
    return false;
  }
}

function isKVM(): boolean {
  if (platform() !== "linux") return false;