makeDefaultPolicyDebugPath = (policyPath) => {
  const path = toPath(policyPath)
  assertAbsolutePath(
    path,
    `${hrCode('policyPath')} must be an absolute path; got ${path}`
  )
  const policyDir = nodePath.dirname(path)
  return nodePath.join(policyDir, DEFAULT_POLICY_DEBUG_FILENAME)
}
Given path to a policy file, returns the sibling path to the policy debug
file

@param {string | URL} policyPath
@returns {string}