code: function checkKeyCodes(
    vm,
    eventKeyCode,
    key,
    builtInAlias
  ) {
    var configKeyCodes = {};
    try {
      configKeyCodes = vm.$options._base.config.keyCodes;
    } catch (e) {
      warn('react-vue checkKeyCodes vm.$options._base.config.keyCodes catch error');
    }
    var keyCodes = configKeyCodes[key] || builtInAlias;
    if (Array.isArray(keyCodes)) {
      return keyCodes.indexOf(eventKeyCode) === -1
    } else {
      return keyCodes !== eventKeyCode
    }
  }
docs: /*