Improved missing gfycat handling. Added 'preview' marker to index.

src/methods/gfycat.js

@@ -1,26 +1,27 @@
- 'use strict';
+'use strict';
 
-const util = require('util');
-const config = require('config');
 const fetch = require('node-fetch');
 
-function gfycat(post) {
-    return fetch(`https://gfycat.com/cajax/get/${post.host.id}`).then(res => res.json()).then(res => {
-        return {
-            album: null,
-            items: [{
-                id: res.gfyItem.gfyName,
-                url: res.gfyItem.webmUrl,
-                title: res.gfyItem.title,
-                description: res.gfyItem.description,
-                type: 'video/webm',
-                datetime: new Date(res.gfyItem.createDate * 1000),
-                original: res.gfyItem
-            }]
-        };
-    }).catch(error => {
-        console.error(error);
-    });
-};
+async function gfycat(post) {
+    const res = await fetch(`https://gfycat.com/cajax/get/${post.host.id}`);
+    const data = await res.json();
+
+    if (data.error) {
+        throw new Error(data.error);
+    }
+
+    return {
+        album: null,
+        items: [{
+            id: data.gfyItem.gfyName,
+            url: data.gfyItem.webmUrl,
+            title: data.gfyItem.title,
+            description: data.gfyItem.description,
+            type: 'video/webm',
+            datetime: new Date(data.gfyItem.createDate * 1000),
+            original: data.gfyItem,
+        }],
+    };
+}
 
 module.exports = gfycat;