ReactDomNode

[stefano solinas]

ReactDOM.findDOMNode is discourage (and it's not imported so the module was crashing).

    render() {
        return <canvas ref={(c) => this.canvas = c} />;
    }

    draw() {
        if (!this.canvas) return;
       let canvas = this.canvas

[晏兵兵]

thank you for your issue