修复空数据编译问题

lib/notion/getAllCategories.js

@@ -1,9 +1,11 @@
+import { isIterable } from '../utils'
+
 /**
  * 获取所有文章的分类
  * @param allPosts
  * @returns {Promise<{}|*[]>}
  */
-export async function getAllCategories ({ allPosts, categoryOptions, sliceCount = 0 }) {
+export async function getAllCategories({ allPosts, categoryOptions, sliceCount = 0 }) {
   if (!allPosts || !categoryOptions) {
     return []
   }
@@ -19,12 +21,14 @@ export async function getAllCategories ({ allPosts, categoryOptions, sliceCount
     }
   })
   const list = []
-  categoryOptions.forEach(c => {
-    const count = categoryObj[c.value]
-    if (count) {
-      list.push({ id: c.id, name: c.value, color: c.color, count })
+  if (isIterable(categoryOptions)) {
+    for (const c of categoryOptions) {
+      const count = categoryObj[c.value]
+      if (count) {
+        list.push({ id: c.id, name: c.value, color: c.color, count })
+      }
     }
-  })
+  }
 
   // 按照数量排序
   // list.sort((a, b) => b.count - a.count)