function lookupEnv()

in packages/opentelemetry-resource-util/src/detector/faas.ts [75:81]

• 7 lines of code
• 2 McCabe index (conditional complexity)

function lookupEnv(key: string): string {
  const val = process.env[key];
  if (val === undefined) {
    throw new Error(`Environment variable ${key} not found`);
  }
  return val;
}