Lint Fix

addons/de/xrechnung/extensions.go

@@ -5,9 +5,8 @@ import (
 	"github.com/invopop/gobl/i18n"
 )
 
-var (
-	ExtKeyTaxRate cbc.Key = "de-xrechnung-tax-rate"
-)
+// ExtKeyTaxRate is the key for the tax rate extension in XRechnung
+var ExtKeyTaxRate cbc.Key = "de-xrechnung-tax-rate"
 
 var extensions = []*cbc.KeyDefinition{
 	{

addons/de/xrechnung/instructions.go

@@ -7,6 +7,7 @@ import (
 	"github.com/invopop/validation"
 )
 
+// Payment keys for XRechnung SEPA direct debit and credit transfer
 const (
 	KeyPaymentMeansSEPACreditTransfer cbc.Key = "sepa-credit-transfer"
 	KeyPaymentMeansSEPADirectDebit    cbc.Key = "sepa-direct-debit"
@@ -23,6 +24,7 @@ var validPaymentKeys = []cbc.Key{
 	KeyPaymentMeansSEPADirectDebit,
 }
 
+// ValidatePaymentInstructions validates the payment instructions according to the XRechnung standard
 func ValidatePaymentInstructions(value interface{}) error {
 	inv, ok := value.(*bill.Invoice)
 	if !ok || inv == nil || inv.Payment == nil || inv.Payment.Instructions == nil {

addons/de/xrechnung/invoices.go

@@ -26,6 +26,7 @@ var validTypes = []cbc.Key{
 	invoiceTypeFinalConstruction,
 }
 
+// ValidateInvoice validates the invoice according to the XRechnung standard
 func ValidateInvoice(inv *bill.Invoice) error {
 	return validation.ValidateStruct(inv,
 		// BR-DE-17

addons/de/xrechnung/tax_combo.go

@@ -5,6 +5,8 @@ import (
 	"github.com/invopop/validation"
 )
 
+// TaxRateExtensions returns the mapping of tax rates defined in DE
+// to their extension values used by XRechnung.
 func TaxRateExtensions() tax.Extensions {
 	return taxRateMap
 }
@@ -15,6 +17,7 @@ var taxRateMap = tax.Extensions{
 	tax.RateExempt:   "E",
 }
 
+// NormalizeTaxCombo adds the XRechnung tax rate code to the tax combo.
 func NormalizeTaxCombo(combo *tax.Combo) {
 	// copy the SAF-T tax rate code to the line
 	switch combo.Category {
@@ -33,6 +36,7 @@ func NormalizeTaxCombo(combo *tax.Combo) {
 	}
 }
 
+// ValidateTaxCombo validates percentage is included as BR-DE-14 indicates
 func ValidateTaxCombo(tc *tax.Combo) error {
 	if tc == nil {
 		return nil

addons/de/xrechnung/xrechnung.go

@@ -1,3 +1,4 @@
+// Package xrechnung provides extensions and validations for the German XRechnung standard version 3.0.2 for electronic invoicing.
 package xrechnung
 
 import (
@@ -9,6 +10,7 @@ import (
 )
 
 const (
+	// V3 is the key for the XRechnung version 3.x
 	V3 cbc.Key = "de-xrechnung-v3"
 )