Creating the node and links array

gistfile1.txt

@Watch("relationships")
  private watchRelationships(relations) {
    if (!isEmpty(relations)) {
      // WHERE THE NODES ARE CREATED
      this.d3NodesData = relations.map(val => {
        return {
          name: val.userName,
          id: val.userId
        };
      });

      relations.forEach(val => {
        const thisUserId = val.userId;
        val.relatedTo.forEach(id => {
          const hasLinkAlready = this.d3LinksData.some(node => {
            if (node.source === id && node.target === thisUserId) {
              return true;
            }
          });
          // IF THE LINK IS NOT ALREADY CREATED
          if (!hasLinkAlready) {
            this.d3LinksData.push(
              { 
                source: thisUserId,
                target: id
              }
            );
          }
        });
      });
    }
  }