AgGridReact.js

export class AgGridReact extends React.Component {
    portals: ReactPortal[] = [];

    mountReactPortal(portal, reactComponent, resolve: (value: any) => void) {
        this.portals = [...this.portals, portal];
        this.batchUpdate(...);
    }

    render() {
        return React.createElement<any>("div", {
            style: this.createStyleForDiv(),
            ref: (e: HTMLElement) => {
                this.eGridDiv = e;
            }
        }, this.portals);
    }
}