perf: is utils

(cherry picked from commit 8c18ad941e5cd308cffa16cb55a634f5d53ffa0d)

src/utils/is.ts

@@ -106,3 +106,12 @@ export const isUrl = (path: string): boolean => {
 export const isDark = (): boolean => {
   return window.matchMedia('(prefers-color-scheme: dark)').matches
 }
+
+// 是否是图片链接
+export const isImgPath = (path: string): boolean => {
+  return /(https?:\/\/|data:image\/).*?\.(png|jpg|jpeg|gif|svg|webp|ico)/gi.test(path)
+}
+
+export const isEmptyVal = (val: any): boolean => {
+  return val === '' || val === null || val === undefined
+}