Method addNode

src/data/Graph.ts:70–89

* Add a new node

(id: string | number, dataIndex?: number)

     * Add a new node
     */
    addNode(id: string | number, dataIndex?: number): GraphNode {
        id = id == null ? ('' + dataIndex) : ('' + id);

        const nodesMap = this._nodesMap;

        if (nodesMap[generateNodeKey(id)]) {
            if (__DEV__) {
                console.error('Graph nodes have duplicate name or id');
            }
            return;
        }

        const node = new GraphNode(id, dataIndex);
        node.hostGraph = this;

        this.nodes.push(node);

        nodesMap[generateNodeKey(id)] = node;
        return node;
    };

    /**
     * Get node by data index