Fix typo in eth_estimateUserOperationGas (#206)

Author: hazim-j

pkg/client/client.go

@@ -181,9 +181,12 @@ func (i *Client) EstimateUserOperationGas(op map[string]any, ep string) (*gas.Ga
 
 	l.Info("eth_estimateUserOperationGas ok")
 	return &gas.GasEstimates{
-		PreVerificationGas: pvg,
-		VerificationGas:    big.NewInt(int64(vg)),
-		CallGasLimit:       big.NewInt(int64(cg)),
+		PreVerificationGas:   pvg,
+		VerificationGasLimit: big.NewInt(int64(vg)),
+		CallGasLimit:         big.NewInt(int64(cg)),
+
+		// TODO: Deprecate in v0.7
+		VerificationGas: big.NewInt(int64(vg)),
 	}, nil
 }
 

pkg/gas/types.go

@@ -4,7 +4,10 @@ import "math/big"
 
 // GasEstimates provides estimate values for all gas fields in a UserOperation.
 type GasEstimates struct {
-	PreVerificationGas *big.Int `json:"preVerificationGas"`
-	VerificationGas    *big.Int `json:"verificationGas"`
-	CallGasLimit       *big.Int `json:"callGasLimit"`
+	PreVerificationGas   *big.Int `json:"preVerificationGas"`
+	VerificationGasLimit *big.Int `json:"verificationGasLimit"`
+	CallGasLimit         *big.Int `json:"callGasLimit"`
+
+	// TODO: Deprecate in v0.7
+	VerificationGas *big.Int `json:"verificationGas"`
 }