vue项目如何导入webF

[fghjhuang]

看到：Dart and JS Intercommunication这个章节，之前vue create的项目，导入：

webf.methodChannel.addMethodCallHandler('setPlayerState', function(state) {
  // Here, 'state' holds the data sent from Dart.

  // You can use the 'state' as needed in your JavaScript logic.
  this.playerState = state;

  // If there's a listener setup for player state changes, notify it.
  if (typeof this.onPlayerStateChanged === 'function') {
    this.onPlayerStateChanged(this.playerState);
  }
  
  // You can also send back a response to Dart, if needed.
  return 'Received state: ' + state;
});

然后vue build, 一直报错can not find webf, 需要导入webf的vue库么？还是webf.js?应该在哪里导入？