Extract constants package

- Reduce clutter in the shared package

pkg/transformers/flap_kick/config.go

@@ -14,13 +14,16 @@
 
 package flap_kick
 
-import "github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
+import (
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared/constants"
+)
 
 var FlapKickConfig = shared.TransformerConfig{
-	TransformerName:     shared.FlapKickLabel,
-	ContractAddresses:   []string{shared.FlapperContractAddress},
-	ContractAbi:         shared.FlapperABI,
-	Topic:               shared.FlapKickSignature,
+	TransformerName:     constants.FlapKickLabel,
+	ContractAddresses:   []string{constants.FlapperContractAddress},
+	ContractAbi:         constants.FlapperABI,
+	Topic:               constants.FlapKickSignature,
 	StartingBlockNumber: 0,
 	EndingBlockNumber:   10000000,
 }

pkg/transformers/flap_kick/converter_test.go

@@ -20,7 +20,7 @@ import (
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/flap_kick"
-	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
+	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared/constants"
 	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"
 	"math/big"
 	"time"
@@ -31,7 +31,7 @@ var _ = Describe("Flap kick converter", func() {
 
 	Describe("ToEntity", func() {
 		It("converts an Eth Log to a FlapKickEntity", func() {
-			entities, err := converter.ToEntities(shared.FlapperABI, []types.Log{test_data.EthFlapKickLog})
+			entities, err := converter.ToEntities(constants.FlapperABI, []types.Log{test_data.EthFlapKickLog})
 
 			Expect(err).NotTo(HaveOccurred())
 			Expect(len(entities)).To(Equal(1))