file.ts

// ActivityMapFrame.tsx
    componentWillReceiveProps(nextProps: Props) {
        // Destroy & re-create with config opts if they've changed
        if (this.props.is3D !== nextProps.is3D) {
            this.map.destroy();
            this.loadMap(nextProps);
            return;
        }

        // Update edges/devices if they've changed
        if (
            this.props.edges !== nextProps.edges ||
            this.props.devicesById !== nextProps.devicesById
        ) {
            this.map.update(nextProps.edges, nextProps.devicesById);
        }

        // Update theme key if it's changed
        if (this.props.themeKey !== nextProps.themeKey) {
            this.map.setTheme({ themeKey });
        }
    }
    
// ActivityMap.ts

    setTheme(themeKey: ThemeKey) {
        this.model ...etc
        this.drawing ...etc
    }