removed lint warning

.gitignore

@@ -0,0 +1 @@
+api_test.go

api.go

@@ -49,6 +49,10 @@ func request[T any](api *Api, query string, vars map[string]interface{}, respObj
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode != 200 {
+		return handleError(resp)
+	}
+
 	//data, _ := ioutil.ReadAll(resp.Body)
 	//fmt.Println(string(data))
 

api_error.go

@@ -0,0 +1,32 @@
+package anilist
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+)
+
+type apiError struct {
+	Message string `json:"message"`
+	Status  int    `json:"status"`
+}
+
+type apiErrResp struct {
+	Errors []apiError `json:"errors"`
+}
+
+func handleError(resp *http.Response) error {
+	respObj := &apiErrResp{}
+
+	dec := json.NewDecoder(resp.Body)
+	err := dec.Decode(respObj)
+	if err != nil {
+		return err
+	}
+
+	if len(respObj.Errors) == 0 {
+		return errors.New("unknown API error")
+	}
+
+	return errors.New(respObj.Errors[0].Message)
+}

utils.go

@@ -18,7 +18,7 @@ func addValue2InterfaceMap[K, T comparable](m map[K]interface{}, key K, value T)
 }
 
 func addSlice2InterfaceMap[K, T comparable](m map[K]interface{}, key K, value []T) {
-	if value != nil && len(value) > 0 {
+	if len(value) > 0 {
 		m[key] = value
 	}
 }