创建mse

packages/artplayer/src/index.js

@@ -28,6 +28,8 @@ let id = 0;
 class Artplayer extends Emitter {
     constructor(option) {
         super();
+        utils.errorHandle(typeof window.Promise === 'function', "Unsupported 'Promise' method");
+        utils.errorHandle(typeof window.fetch === 'function', "Unsupported 'fetch' method");
         this.option = utils.mergeDeep(Artplayer.DEFAULTS, option);
         optionValidator(this.option, scheme);
         this.init();
@@ -148,4 +150,4 @@ Object.defineProperty(Artplayer, 'instances', {
 });
 
 window.Artplayer = Artplayer;
-export default Artplayer;
+export default Artplayer;