Function wrapper

packages/vega-deck.gl/src/deck.gl-classes/deckgl.ts:68–123

(props: DeckProps)

    //This allows us to retrieve Deck from either UMD or ES6 consumers of this class.

    function wrapper(props: DeckProps) {

        /**
         * @params container (Element) - DOM element to add deck.gl canvas to
         * @params controller (Object) - Controller class. Leave empty for auto detection
         */
        class DeckGLInternal extends base.deck.Deck {
            private _updateViewState;
            private onViewStateChange;
            public interactiveState: InteractiveStateVegaDeckGL;

            constructor(props: DeckGLInternalProps) {
                if (typeof document === 'undefined') {
                    // Not browser
                    throw Error('Deck can only be used in the browser');
                }

                const { deckCanvas } = createCanvas(props);

                const viewState = props.initialViewState || props.viewState || {};

                super(
                    Object.assign({}, props, {
                        width: '100%',
                        height: '100%',
                        canvas: deckCanvas,
                        controller: OrbitControllerClass,
                        initialViewState: viewState,
                    }),
                );

                // Callback for the controller
                this._updateViewState = params => {
                    if (this.onViewStateChange) {
                        this.onViewStateChange(params);
                    }
                };
            }

            setProps(props) {
                // this._updateViewState must be bound to `this`
                // but we don't have access to the current instance before calling super().
                if ('onViewStateChange' in props && this._updateViewState) {
                    // This is called at least once at _onRendererInitialized
                    this.onViewStateChange = props.onViewStateChange;
                    props.onViewStateChange = this._updateViewState;
                }

                super.setProps(props);
            }
        }

        const instance = new DeckGLInternal(props) as Deck;

        return instance;
    }

    return {