removed dependencies

err.go

@@ -0,0 +1,32 @@
+package scn
+
+import (
+	"errors"
+	"fmt"
+)
+
+type ErrorType string
+
+var (
+	ErrAuthFailed        ErrorType = "GOEXT_SCN_AUTHFAILED"
+	ErrQuota             ErrorType = "GOEXT_SCN_QUOTAEXCEEDED"
+	ErrBadRequest        ErrorType = "GOEXT_SCN_BADREQUEST"
+	ErrInternalServerErr ErrorType = "GOEXT_SCN_INTERNALSERVER"
+	ErrOther             ErrorType = "GOEXT_SCN_OTHER"
+)
+
+type InternalError struct {
+	errType      ErrorType
+	errorMessage string
+}
+
+func NewError(errType ErrorType, errMessage string) *InternalError {
+	return &InternalError{
+		errType:      errType,
+		errorMessage: errMessage,
+	}
+}
+
+func (e *InternalError) Build() error {
+	return errors.New(fmt.Sprintf("[%v]: %v", e.errType, e.errorMessage))
+}