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nit: Use nil pointer pattern to check for interface compliance. #3439

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Apr 13, 2023
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nit: Use nil pointer pattern to check for interface compliance. #3439

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40a49bf
nit: Use nil pointer pattern to check for interface compliance.
DimitrisJim Apr 12, 2023
f61dc8a
Merge branch 'main' into jim/interface_conformance
crodriguezvega Apr 12, 2023
eede15a
Merge branch 'main' into jim/interface_conformance
crodriguezvega Apr 13, 2023
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2 changes: 1 addition & 1 deletion modules/apps/27-interchain-accounts/controller/ibc_middleware.go
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Expand Up @@ -16,7 +16,7 @@ import (
ibcexported "github.com/cosmos/ibc-go/v7/modules/core/exported"
)

var _ porttypes.Middleware = &IBCMiddleware{}
var _ porttypes.Middleware = (*IBCMiddleware)(nil)

// IBCMiddleware implements the ICS26 callbacks for the fee middleware given the
// ICA controller keeper and the underlying application.
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2 changes: 1 addition & 1 deletion modules/apps/27-interchain-accounts/controller/keeper/grpc_query.go
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Expand Up @@ -11,7 +11,7 @@ import (
icatypes "github.com/cosmos/ibc-go/v7/modules/apps/27-interchain-accounts/types"
)

var _ types.QueryServer = Keeper{}
var _ types.QueryServer = (*Keeper)(nil)
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I'd be happy to revert the changes on types implementing interfaces using value receivers if it generally gives the impression (unsure) they must be used as pointers.


// InterchainAccount implements the Query/InterchainAccount gRPC method
func (k Keeper) InterchainAccount(goCtx context.Context, req *types.QueryInterchainAccountRequest) (*types.QueryInterchainAccountResponse, error) {
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2 changes: 1 addition & 1 deletion modules/apps/27-interchain-accounts/controller/keeper/msg_server.go
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Expand Up @@ -10,7 +10,7 @@ import (
icatypes "github.com/cosmos/ibc-go/v7/modules/apps/27-interchain-accounts/types"
)

var _ types.MsgServer = msgServer{}
var _ types.MsgServer = (*msgServer)(nil)

type msgServer struct {
*Keeper
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2 changes: 1 addition & 1 deletion modules/apps/27-interchain-accounts/controller/types/msgs.go
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Expand Up @@ -11,7 +11,7 @@ import (
host "github.com/cosmos/ibc-go/v7/modules/core/24-host"
)

var _ sdk.Msg = &MsgRegisterInterchainAccount{}
var _ sdk.Msg = (*MsgRegisterInterchainAccount)(nil)

// NewMsgRegisterInterchainAccount creates a new instance of MsgRegisterInterchainAccount
func NewMsgRegisterInterchainAccount(connectionID, owner, version string) *MsgRegisterInterchainAccount {
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2 changes: 1 addition & 1 deletion modules/apps/27-interchain-accounts/host/keeper/grpc_query.go
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Expand Up @@ -8,7 +8,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/apps/27-interchain-accounts/host/types"
)

var _ types.QueryServer = Keeper{}
var _ types.QueryServer = (*Keeper)(nil)

// Params implements the Query/Params gRPC method
func (q Keeper) Params(c context.Context, _ *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
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8 changes: 4 additions & 4 deletions modules/apps/27-interchain-accounts/module.go
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Expand Up @@ -29,11 +29,11 @@ import (
)

var (
_ module.AppModule = AppModule{}
_ module.AppModuleBasic = AppModuleBasic{}
_ module.AppModuleSimulation = AppModule{}
_ module.AppModule = (*AppModule)(nil)
_ module.AppModuleBasic = (*AppModuleBasic)(nil)
_ module.AppModuleSimulation = (*AppModule)(nil)

_ porttypes.IBCModule = host.IBCModule{}
_ porttypes.IBCModule = (*host.IBCModule)(nil)
)

// AppModuleBasic is the IBC interchain accounts AppModuleBasic
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2 changes: 1 addition & 1 deletion modules/apps/29-fee/ibc_middleware.go
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Expand Up @@ -15,7 +15,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/core/exported"
)

var _ porttypes.Middleware = &IBCMiddleware{}
var _ porttypes.Middleware = (*IBCMiddleware)(nil)

// IBCMiddleware implements the ICS26 callbacks for the fee middleware given the
// fee keeper and the underlying application.
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2 changes: 1 addition & 1 deletion modules/apps/29-fee/keeper/grpc_query.go
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Expand Up @@ -13,7 +13,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/apps/29-fee/types"
)

var _ types.QueryServer = Keeper{}
var _ types.QueryServer = (*Keeper)(nil)

// IncentivizedPackets implements the Query/IncentivizedPackets gRPC method
func (k Keeper) IncentivizedPackets(goCtx context.Context, req *types.QueryIncentivizedPacketsRequest) (*types.QueryIncentivizedPacketsResponse, error) {
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4 changes: 2 additions & 2 deletions modules/apps/29-fee/keeper/keeper.go
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Expand Up @@ -16,8 +16,8 @@ import (
// Middleware must implement types.ChannelKeeper and types.PortKeeper expected interfaces
// so that it can wrap IBC channel and port logic for underlying application.
var (
_ types.ChannelKeeper = Keeper{}
_ types.PortKeeper = Keeper{}
_ types.ChannelKeeper = (*Keeper)(nil)
_ types.PortKeeper = (*Keeper)(nil)
)

// Keeper defines the IBC fungible transfer keeper
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2 changes: 1 addition & 1 deletion modules/apps/29-fee/keeper/msg_server.go
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Expand Up @@ -11,7 +11,7 @@ import (
channeltypes "github.com/cosmos/ibc-go/v7/modules/core/04-channel/types"
)

var _ types.MsgServer = Keeper{}
var _ types.MsgServer = (*Keeper)(nil)

// RegisterPayee defines a rpc handler method for MsgRegisterPayee
// RegisterPayee is called by the relayer on each channelEnd and allows them to set an optional
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4 changes: 2 additions & 2 deletions modules/apps/29-fee/module.go
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Expand Up @@ -21,8 +21,8 @@ import (
)

var (
_ module.AppModule = AppModule{}
_ module.AppModuleBasic = AppModuleBasic{}
_ module.AppModule = (*AppModule)(nil)
_ module.AppModuleBasic = (*AppModuleBasic)(nil)
)

// AppModuleBasic is the 29-fee AppModuleBasic
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2 changes: 1 addition & 1 deletion modules/apps/transfer/keeper/grpc_query.go
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Expand Up @@ -15,7 +15,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/apps/transfer/types"
)

var _ types.QueryServer = Keeper{}
var _ types.QueryServer = (*Keeper)(nil)

// DenomTrace implements the Query/DenomTrace gRPC method
func (q Keeper) DenomTrace(c context.Context, req *types.QueryDenomTraceRequest) (*types.QueryDenomTraceResponse, error) {
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2 changes: 1 addition & 1 deletion modules/apps/transfer/keeper/msg_server.go
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Expand Up @@ -10,7 +10,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/apps/transfer/types"
)

var _ types.MsgServer = Keeper{}
var _ types.MsgServer = (*Keeper)(nil)

// Transfer defines an rpc handler method for MsgTransfer.
func (k Keeper) Transfer(goCtx context.Context, msg *types.MsgTransfer) (*types.MsgTransferResponse, error) {
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6 changes: 3 additions & 3 deletions modules/apps/transfer/module.go
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Expand Up @@ -23,9 +23,9 @@ import (
)

var (
_ module.AppModule = AppModule{}
_ module.AppModuleBasic = AppModuleBasic{}
_ porttypes.IBCModule = IBCModule{}
_ module.AppModule = (*AppModule)(nil)
_ module.AppModuleBasic = (*AppModuleBasic)(nil)
_ porttypes.IBCModule = (*IBCModule)(nil)
)

// AppModuleBasic is the IBC Transfer AppModuleBasic
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2 changes: 1 addition & 1 deletion modules/apps/transfer/types/trace.go
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Expand Up @@ -158,7 +158,7 @@ func (t Traces) Validate() error {
return nil
}

var _ sort.Interface = Traces{}
var _ sort.Interface = (*Traces)(nil)

// Len implements sort.Interface for Traces
func (t Traces) Len() int { return len(t) }
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2 changes: 1 addition & 1 deletion modules/apps/transfer/types/transfer_authorization.go
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Expand Up @@ -12,7 +12,7 @@ import (

const gasCostPerIteration = uint64(10)

var _ authz.Authorization = &TransferAuthorization{}
var _ authz.Authorization = (*TransferAuthorization)(nil)

// NewTransferAuthorization creates a new TransferAuthorization object.
func NewTransferAuthorization(allocations ...Allocation) *TransferAuthorization {
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9 changes: 4 additions & 5 deletions modules/capability/module.go
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Expand Up @@ -26,9 +26,10 @@ import (
)

var (
_ module.BeginBlockAppModule = AppModule{}
_ module.AppModuleBasic = AppModuleBasic{}
_ module.AppModuleSimulation = AppModule{}
_ module.BeginBlockAppModule = (*AppModule)(nil)
_ module.AppModuleBasic = (*AppModuleBasic)(nil)
_ module.AppModuleSimulation = (*AppModule)(nil)
_ appmodule.AppModule = (*AppModule)(nil)
)

// ----------------------------------------------------------------------------
Expand Down Expand Up @@ -100,8 +101,6 @@ func NewAppModule(cdc codec.Codec, keeper keeper.Keeper, sealKeeper bool) AppMod
}
}

var _ appmodule.AppModule = AppModule{}

// IsOnePerModuleType implements the depinject.OnePerModuleType interface.
func (am AppModule) IsOnePerModuleType() {}

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2 changes: 1 addition & 1 deletion modules/core/02-client/keeper/grpc_query.go
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Expand Up @@ -19,7 +19,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/core/exported"
)

var _ types.QueryServer = Keeper{}
var _ types.QueryServer = (*Keeper)(nil)

// ClientState implements the Query/ClientState gRPC method
func (q Keeper) ClientState(c context.Context, req *types.QueryClientStateRequest) (*types.QueryClientStateResponse, error) {
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4 changes: 2 additions & 2 deletions modules/core/02-client/migrations/v7/solomachine.go
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Expand Up @@ -22,9 +22,9 @@ import (

// Interface implementation checks.
var (
_, _ codectypes.UnpackInterfacesMessage = &ClientState{}, &ConsensusState{}
_, _ codectypes.UnpackInterfacesMessage = (*ClientState)(nil), (*ConsensusState)(nil)
_ exported.ClientState = (*ClientState)(nil)
_ exported.ConsensusState = &ConsensusState{}
_ exported.ConsensusState = (*ConsensusState)(nil)
)

// RegisterInterfaces registers the solomachine v2 ClientState and ConsensusState types in the interface registry.
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6 changes: 3 additions & 3 deletions modules/core/02-client/types/client.go
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Expand Up @@ -15,8 +15,8 @@ import (
)

var (
_ codectypes.UnpackInterfacesMessage = IdentifiedClientState{}
_ codectypes.UnpackInterfacesMessage = ConsensusStateWithHeight{}
_ codectypes.UnpackInterfacesMessage = (*IdentifiedClientState)(nil)
_ codectypes.UnpackInterfacesMessage = (*ConsensusStateWithHeight)(nil)
)

// NewIdentifiedClientState creates a new IdentifiedClientState instance
Expand All @@ -42,7 +42,7 @@ func (ics IdentifiedClientState) UnpackInterfaces(unpacker codectypes.AnyUnpacke
return unpacker.UnpackAny(ics.ClientState, new(exported.ClientState))
}

var _ sort.Interface = IdentifiedClientStates{}
var _ sort.Interface = (*IdentifiedClientStates)(nil)

// IdentifiedClientStates defines a slice of ClientConsensusStates that supports the sort interface
type IdentifiedClientStates []IdentifiedClientState
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14 changes: 6 additions & 8 deletions modules/core/02-client/types/genesis.go
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Expand Up @@ -11,15 +11,13 @@ import (
)

var (
_ codectypes.UnpackInterfacesMessage = IdentifiedClientState{}
_ codectypes.UnpackInterfacesMessage = ClientsConsensusStates{}
_ codectypes.UnpackInterfacesMessage = ClientConsensusStates{}
_ codectypes.UnpackInterfacesMessage = GenesisState{}
)
_ codectypes.UnpackInterfacesMessage = (*IdentifiedClientState)(nil)
_ codectypes.UnpackInterfacesMessage = (*ClientsConsensusStates)(nil)
_ codectypes.UnpackInterfacesMessage = (*ClientConsensusStates)(nil)
_ codectypes.UnpackInterfacesMessage = (*GenesisState)(nil)

var (
_ sort.Interface = ClientsConsensusStates{}
_ exported.GenesisMetadata = GenesisMetadata{}
_ sort.Interface = (*ClientsConsensusStates)(nil)
_ exported.GenesisMetadata = (*GenesisMetadata)(nil)
)

// ClientsConsensusStates defines a slice of ClientConsensusStates that supports the sort interface
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16 changes: 8 additions & 8 deletions modules/core/02-client/types/msgs.go
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Expand Up @@ -11,15 +11,15 @@ import (
)

var (
_ sdk.Msg = &MsgCreateClient{}
_ sdk.Msg = &MsgUpdateClient{}
_ sdk.Msg = &MsgSubmitMisbehaviour{}
_ sdk.Msg = &MsgUpgradeClient{}
_ sdk.Msg = (*MsgCreateClient)(nil)
_ sdk.Msg = (*MsgUpdateClient)(nil)
_ sdk.Msg = (*MsgSubmitMisbehaviour)(nil)
_ sdk.Msg = (*MsgUpgradeClient)(nil)

_ codectypes.UnpackInterfacesMessage = MsgCreateClient{}
_ codectypes.UnpackInterfacesMessage = MsgUpdateClient{}
_ codectypes.UnpackInterfacesMessage = MsgSubmitMisbehaviour{}
_ codectypes.UnpackInterfacesMessage = MsgUpgradeClient{}
_ codectypes.UnpackInterfacesMessage = (*MsgCreateClient)(nil)
_ codectypes.UnpackInterfacesMessage = (*MsgUpdateClient)(nil)
_ codectypes.UnpackInterfacesMessage = (*MsgSubmitMisbehaviour)(nil)
_ codectypes.UnpackInterfacesMessage = (*MsgUpgradeClient)(nil)
)

// NewMsgCreateClient creates a new MsgCreateClient instance
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6 changes: 3 additions & 3 deletions modules/core/02-client/types/proposal.go
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Expand Up @@ -19,9 +19,9 @@ const (
)

var (
_ govtypes.Content = &ClientUpdateProposal{}
_ govtypes.Content = &UpgradeProposal{}
_ codectypes.UnpackInterfacesMessage = &UpgradeProposal{}
_ govtypes.Content = (*ClientUpdateProposal)(nil)
_ govtypes.Content = (*UpgradeProposal)(nil)
_ codectypes.UnpackInterfacesMessage = (*UpgradeProposal)(nil)
)

func init() {
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8 changes: 4 additions & 4 deletions modules/core/02-client/types/query.go
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Expand Up @@ -7,10 +7,10 @@ import (
)

var (
_ codectypes.UnpackInterfacesMessage = QueryClientStateResponse{}
_ codectypes.UnpackInterfacesMessage = QueryClientStatesResponse{}
_ codectypes.UnpackInterfacesMessage = QueryConsensusStateResponse{}
_ codectypes.UnpackInterfacesMessage = QueryConsensusStatesResponse{}
_ codectypes.UnpackInterfacesMessage = (*QueryClientStateResponse)(nil)
_ codectypes.UnpackInterfacesMessage = (*QueryClientStatesResponse)(nil)
_ codectypes.UnpackInterfacesMessage = (*QueryConsensusStateResponse)(nil)
_ codectypes.UnpackInterfacesMessage = (*QueryConsensusStatesResponse)(nil)
)

// UnpackInterfaces implements UnpackInterfacesMesssage.UnpackInterfaces
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2 changes: 1 addition & 1 deletion modules/core/03-connection/keeper/grpc_query.go
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Expand Up @@ -15,7 +15,7 @@ import (
host "github.com/cosmos/ibc-go/v7/modules/core/24-host"
)

var _ types.QueryServer = Keeper{}
var _ types.QueryServer = (*Keeper)(nil)

// Connection implements the Query/Connection gRPC method
func (q Keeper) Connection(c context.Context, req *types.QueryConnectionRequest) (*types.QueryConnectionResponse, error) {
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12 changes: 6 additions & 6 deletions modules/core/03-connection/types/msgs.go
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Expand Up @@ -13,13 +13,13 @@ import (
)

var (
_ sdk.Msg = &MsgConnectionOpenInit{}
_ sdk.Msg = &MsgConnectionOpenConfirm{}
_ sdk.Msg = &MsgConnectionOpenAck{}
_ sdk.Msg = &MsgConnectionOpenTry{}
_ sdk.Msg = (*MsgConnectionOpenInit)(nil)
_ sdk.Msg = (*MsgConnectionOpenConfirm)(nil)
_ sdk.Msg = (*MsgConnectionOpenAck)(nil)
_ sdk.Msg = (*MsgConnectionOpenTry)(nil)

_ codectypes.UnpackInterfacesMessage = MsgConnectionOpenTry{}
_ codectypes.UnpackInterfacesMessage = MsgConnectionOpenAck{}
_ codectypes.UnpackInterfacesMessage = (*MsgConnectionOpenTry)(nil)
_ codectypes.UnpackInterfacesMessage = (*MsgConnectionOpenAck)(nil)
)

// NewMsgConnectionOpenInit creates a new MsgConnectionOpenInit instance. It sets the
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4 changes: 2 additions & 2 deletions modules/core/03-connection/types/query.go
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Expand Up @@ -8,8 +8,8 @@ import (
)

var (
_ codectypes.UnpackInterfacesMessage = QueryConnectionClientStateResponse{}
_ codectypes.UnpackInterfacesMessage = QueryConnectionConsensusStateResponse{}
_ codectypes.UnpackInterfacesMessage = (*QueryConnectionClientStateResponse)(nil)
_ codectypes.UnpackInterfacesMessage = (*QueryConnectionConsensusStateResponse)(nil)
)

// NewQueryConnectionResponse creates a new QueryConnectionResponse instance
Expand Down
2 changes: 1 addition & 1 deletion modules/core/03-connection/types/version.go
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Expand Up @@ -26,7 +26,7 @@ var (
}
)

var _ exported.Version = &Version{}
var _ exported.Version = (*Version)(nil)

// NewVersion returns a new instance of Version.
func NewVersion(identifier string, features []string) *Version {
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2 changes: 1 addition & 1 deletion modules/core/04-channel/keeper/keeper.go
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Expand Up @@ -20,7 +20,7 @@ import (
"github.com/cosmos/ibc-go/v7/modules/core/exported"
)

var _ porttypes.ICS4Wrapper = Keeper{}
var _ porttypes.ICS4Wrapper = (*Keeper)(nil)

// Keeper defines the IBC channel keeper
type Keeper struct {
Expand Down
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