gistfile1.txt

private addScriptPromise(src: string) {
    let scriptResolve: () => void;
    let scriptReject: () => void;
    const scriptPromise = new Promise((resolve, reject) => {
      scriptResolve = resolve;
      scriptReject = reject;
    });
    const scriptComponent = (
      <Script
          url={src}
          onError={() => scriptReject()}
          onLoad={() => scriptResolve()} />
    );
    ReactDOM.render(
      scriptComponent,
      document.getElementById('aux-scripts') as Element,
    );


    this.scriptPromises.push(scriptPromise);
  }

  private executeScriptWhenReady(content: string) {
    Promise.all(this.scriptPromises).then(() => {
      if (typeof window !== 'undefined') {
        window.eval(content);
      }
    }).catch(() => {
      console.warn('Could not load the script from the content!');
    });
  }