removed xerrors; changed the parameter order of iferr.Fail; removed L…

…oadConfig from xconfig

iferr/errors.go

@@ -60,8 +60,8 @@ type Fataler interface {
 	Fatalf(format string, args ...interface{})
 }
 
-func Fail(err error, f Fataler) { Default.Fail(err, f) }
-func (ie *IfErr) Fail(err error, f Fataler) {
+func Fail(f Fataler, err error) { Default.Fail(f, err) }
+func (ie *IfErr) Fail(f Fataler, err error) {
 	if err != nil {
 		f.Fatalf("%+v\n", err)
 	}

xconfig/xconfig.go

@@ -12,32 +12,6 @@ import (
 	"github.com/unchainio/pkg/xpath"
 )
 
-func LoadConfig(cfg interface{}, path ...string) error {
-	return Load(cfg, FromPaths(path...))
-}
-
-type Options struct {
-	verbose bool
-
-	pathFlag *flag.Flag
-	paths    []string
-
-	cfgType string
-	readers []io.Reader
-
-	remote *remoteConfig
-
-	automaticEnv bool
-
-	viper *viper.Viper
-}
-
-type remoteConfig struct {
-	provider, endpoint, path string
-}
-
-type OptionFunc func(*Options) error
-
 func Load(cfg interface{}, optFuncs ...OptionFunc) error {
 	var err error
 	opts := &Options{}
@@ -122,6 +96,28 @@ func Load(cfg interface{}, optFuncs ...OptionFunc) error {
 	return nil
 }
 
+type OptionFunc func(*Options) error
+
+type Options struct {
+	verbose bool
+
+	pathFlag *flag.Flag
+	paths    []string
+
+	cfgType string
+	readers []io.Reader
+
+	remote *remoteConfig
+
+	automaticEnv bool
+
+	viper *viper.Viper
+}
+
+type remoteConfig struct {
+	provider, endpoint, path string
+}
+
 func Verbose(flag bool) OptionFunc {
 	return func(o *Options) error {
 		o.verbose = flag