update utils

packages/artplayer/src/utils/format.js

@@ -6,6 +6,10 @@ export function capitalize(str) {
     return str.charAt(0).toUpperCase() + str.slice(1);
 }
 
+export function isStringOrNumber(val) {
+    return ['string', 'number'].includes(typeof val);
+}
+
 export function secondToTime(second) {
     const add0 = (num) => (num < 10 ? `0${num}` : String(num));
     const hour = Math.floor(second / 3600);