function parseInstanceId()

in google/resource-snippets/functions-backed-type/function/function.js [78:86]

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

function parseInstanceId(req) {
  const paramKeys = Object.keys(req.params);

  if (paramKeys.length != 1 || !req.params[paramKeys[0]]) {
    throw { code: 400, error: { message: 'Instance id not specified in the URL.' } };
  }

  return req.params[paramKeys[0]]
}