shouldWriteDebugPolicy = (
  policyDebugPath,
  { shouldWrite = false, debug = false } = {}
) => !!(shouldWrite && debug && policyDebugPath)
Returns `true` if a debug policy should be written

Moonlights as a type guard for `policyDebugPath`

@param {string} [policyDebugPath] Path to debug policy file, if any
@param {Object} [options] Options
@param {boolean} [options.shouldWrite] The "write" flag
@param {boolean} [options.debug] The "debug" flag
@returns {policyDebugPath is string}