modify of review points

Author: yumiura

lib/image.js

@@ -43,23 +43,30 @@ Object.defineProperty(Image.prototype, 'src', {
             throw err
           }
         }
-        const request =  fetch(url = val, data = {
-          method: "POST",
-          headers: { 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36' }
-        })
-
-        request.then((res) => {
+        util
+        .callbackify(
+          fetch(val, {
+            method: 'POST',
+            headers: {
+              "User-Agent":
+                "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36",
+            },
+          })
+        )
+        .then((res) => {
           if (res.statusCode < 200 || res.statusCode >= 300) {
-            return onerror(new Error(`Server responded with ${res.statusCode}`))
+            return onerror(
+              new Error(`Server responded with ${res.statusCode}`)
+            );
           }
           return res.arrayBuffer()
         })
         .then((data) => {
-          return setSource(this, data)
+          setSource(this, data)
         })
         .catch((err) => {
-          return onerror(err)
-        })
+          onerror(err);
+        });
       } else { // local file path assumed
         setSource(this, val)
       }