registerWith static method
注册 Web 插件并暴露 JavaScript 事件入口。
Implementation
static void registerWith(Registrar registrar) {
globalContext['flChannelSendEvent'] = ((JSString name, JSAny? data) {
final Object? payload = data?.dartify();
unawaited(FlChannel.instance.sendEventFromNative(name.toDart, payload));
}).toJS;
}