TradingView Chart Dart JS Interop

tv.dart

@JS()
library tv.js;

import "package:js/js.dart";

@JS("TradingView.widget")
class widget {
  external factory widget(WidgetOptions options);
}

@anonymous
@JS()
class WidgetOptions
{
  external String get symbol;
  external set symbol(String b);

  external String get container_id;
  external set container_id(String b);

  external bool get autosize;
  external set autosize(bool b);

  external String get interval;
  external set interval(String b);
}

tv_sample.dart

import 'TradingView.dart' as tv;

tv.widget (
      new tv.WidgetOptions()
          ..container_id = 'tv_chart_container'
          ..autosize = true
          ..symbol = "COINBASE:BTCUSD"
          ..interval = "D"
    );