replace all instances of collections.Contains with slices.Contains ac…

…ross the entire codebase (cosmos#4685)

* replace collections.Contains with slices.Contains

* chore: remove internal/collections pkg

* chore: fix slices.Contains api usage, and remove unused imports

---------

Co-authored-by: Damian Nolan <damiannolan@gmail.com>
Co-authored-by: Jim Fasarakis-Hilliard <d.f.hilliard@gmail.com>

modules/apps/27-interchain-accounts/host/client/cli/tx.go

@@ -3,6 +3,7 @@ package cli
 import (
 	"encoding/json"
 	"fmt"
+	"slices"
 
 	"github.com/cosmos/gogoproto/proto"
 	"github.com/spf13/cobra"
@@ -12,7 +13,6 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/version"
 
-	"github.com/cosmos/ibc-go/v8/internal/collections"
 	icatypes "github.com/cosmos/ibc-go/v8/modules/apps/27-interchain-accounts/types"
 )
 
@@ -82,7 +82,7 @@ otherwise the encoding flag can be used in combination with either "proto3" or "
 				return err
 			}
 
-			if !collections.Contains(encoding, []string{icatypes.EncodingProtobuf, icatypes.EncodingProto3JSON}) {
+			if !slices.Contains([]string{icatypes.EncodingProtobuf, icatypes.EncodingProto3JSON}, encoding) {
 				return fmt.Errorf("unsupported encoding type: %s", encoding)
 			}
 

modules/apps/27-interchain-accounts/types/metadata.go

@@ -1,11 +1,12 @@
 package types
 
 import (
+	"slices"
+
 	errorsmod "cosmossdk.io/errors"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
-	"github.com/cosmos/ibc-go/v8/internal/collections"
 	connectiontypes "github.com/cosmos/ibc-go/v8/modules/core/03-connection/types"
 )
 
@@ -134,7 +135,7 @@ func ValidateHostMetadata(ctx sdk.Context, channelKeeper ChannelKeeper, connecti
 
 // isSupportedEncoding returns true if the provided encoding is supported, otherwise false
 func isSupportedEncoding(encoding string) bool {
-	return collections.Contains(encoding, getSupportedEncoding())
+	return slices.Contains(getSupportedEncoding(), encoding)
 }
 
 // getSupportedEncoding returns a string slice of supported encoding formats
@@ -144,7 +145,7 @@ func getSupportedEncoding() []string {
 
 // isSupportedTxType returns true if the provided transaction type is supported, otherwise false
 func isSupportedTxType(txType string) bool {
-	return collections.Contains(txType, getSupportedTxTypes())
+	return slices.Contains(getSupportedTxTypes(), txType)
 }
 
 // getSupportedTxTypes returns a string slice of supported transaction types

modules/core/02-client/types/params.go

@@ -2,9 +2,9 @@ package types
 
 import (
 	"fmt"
+	"slices"
 	"strings"
 
-	"github.com/cosmos/ibc-go/v8/internal/collections"
 	"github.com/cosmos/ibc-go/v8/modules/core/exported"
 )
 
@@ -30,7 +30,7 @@ func (p Params) Validate() error {
 
 // IsAllowedClient checks if the given client type is registered on the allowlist.
 func (p Params) IsAllowedClient(clientType string) bool {
-	return collections.Contains(clientType, p.AllowedClients)
+	return slices.Contains(p.AllowedClients, clientType)
 }
 
 // validateClients checks that the given clients are not blank.

modules/core/03-connection/types/version.go

@@ -1,11 +1,10 @@
 package types
 
 import (
+	"slices"
 	"strings"
 
 	errorsmod "cosmossdk.io/errors"
-
-	"github.com/cosmos/ibc-go/v8/internal/collections"
 )
 
 var (
@@ -86,7 +85,7 @@ func (version Version) VerifyProposedVersion(proposedVersion *Version) error {
 	}
 
 	for _, proposedFeature := range proposedVersion.GetFeatures() {
-		if !collections.Contains(proposedFeature, version.GetFeatures()) {
+		if !slices.Contains(version.GetFeatures(), proposedFeature) {
 			return errorsmod.Wrapf(
 				ErrVersionNegotiationFailed,
 				"proposed feature (%s) is not a supported feature set (%s)", proposedFeature, version.GetFeatures(),
@@ -100,7 +99,7 @@ func (version Version) VerifyProposedVersion(proposedVersion *Version) error {
 // VerifySupportedFeature takes in a version and feature string and returns
 // true if the feature is supported by the version and false otherwise.
 func VerifySupportedFeature(version *Version, feature string) bool {
-	return collections.Contains(feature, version.GetFeatures())
+	return slices.Contains(version.GetFeatures(), feature)
 }
 
 // GetCompatibleVersions returns a descending ordered set of compatible IBC
@@ -176,7 +175,7 @@ func PickVersion(supportedVersions, counterpartyVersions []*Version) (*Version,
 // set for the counterparty version.
 func GetFeatureSetIntersection(sourceFeatureSet, counterpartyFeatureSet []string) (featureSet []string) {
 	for _, feature := range sourceFeatureSet {
-		if collections.Contains(feature, counterpartyFeatureSet) {
+		if slices.Contains(counterpartyFeatureSet, feature) {
 			featureSet = append(featureSet, feature)
 		}
 	}

testing/events.go

@@ -2,13 +2,13 @@ package ibctesting
 
 import (
 	"fmt"
+	"slices"
 	"strconv"
 
 	testifysuite "github.com/stretchr/testify/suite"
 
 	abci "github.com/cometbft/cometbft/abci/types"
 
-	"github.com/cosmos/ibc-go/v8/internal/collections"
 	clienttypes "github.com/cosmos/ibc-go/v8/modules/core/02-client/types"
 	connectiontypes "github.com/cosmos/ibc-go/v8/modules/core/03-connection/types"
 	channeltypes "github.com/cosmos/ibc-go/v8/modules/core/04-channel/types"
@@ -185,7 +185,7 @@ func AssertEvents(
 				for _, expectedAttr := range expectedEvent.Attributes {
 					// any expected attributes that are not contained in the actual events will cause this event
 					// not to match
-					attributeMatch = attributeMatch && collections.Contains(expectedAttr, actualEvent.Attributes)
+					attributeMatch = attributeMatch && slices.Contains(actualEvent.Attributes, expectedAttr)
 				}
 
 				if attributeMatch {