// if the given file does not exist or failed during parsing.
func NewFileWatcher(fileWatcher filewatcher.FileWatcher, filename string, multiWatch bool) (Watcher, error) {
	meshConfigYaml, err := ReadMeshConfigData(filename)
	if err != nil {
		return nil, err
	}

	meshConfig, err := ApplyMeshConfigDefaults(meshConfigYaml)
	if err != nil {
		return nil, err
	}

	w := &internalWatcher{

	if err != nil {
		return nil, multierror.Prefix(err, "cannot read mesh config file")
	}
	return ApplyMeshConfigDefaults(string(yaml))
}

// ReadMeshConfigData gets mesh configuration yaml from a config file
func ReadMeshConfigData(filename string) (string, error) {
	yaml, err := os.ReadFile(filename)
	if err != nil {
		return "", multierror.Prefix(err, "cannot read mesh config file")
	}