server.js

const Hapi = require("hapi");
const server = new Hapi.Server();

server.connection({
  host: "localhost",
  port: 4000,
  routes: { cors: true }
});

server.route({
  method: "GET",
  path: "/data",
  handler: (req, res) => {
    res(
      JSON.stringify({
        nodes: [
          {
            data: {
              name: "PIP3 activates AKT signaling",
              color: "#FF0000",
              size: 12.5527,
              id: "PIP3 activates AKT signaling"
            }
          },
          {
            data: {
              name: "Constitutive Signaling by Aberrant PI3K in Cancer",
              color: "#FF0000",
              size: 11.4613,
              id: "Constitutive Signaling by Aberrant PI3K in Cancer"
            }
          },
          {
            data: {
              name: "PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling",
              color: "#FF0000",
              size: 11.7609,
              id: "PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling"
            }
          },
          {
            data: {
              name: "Fanconi Anemia Pathway",
              color: "#FF0000",
              size: 10.4139,
              id: "Fanconi Anemia Pathway"
            }
          },
          {
            data: {
              name: "RAF/MAP kinase cascade",
              color: "#FF0000",
              size: 11.7609,
              id: "RAF/MAP kinase cascade"
            }
          },
          {
            data: {
              name: "TP53 Regulates Transcription of DNA Repair Genes",
              color: "#FE0101",
              size: 10.4139,
              id: "TP53 Regulates Transcription of DNA Repair Genes"
            }
          },
          {
            data: {
              name: "Signaling by FGFR3 fusions in cancer",
              color: "#FB1711",
              size: 7.7815,
              id: "Signaling by FGFR3 fusions in cancer"
            }
          },
          {
            data: {
              name: "Downstream signal transduction",
              color: "#FA231A",
              size: 9.0309,
              id: "Downstream signal transduction"
            }
          },
          {
            data: {
              name: "Signaling by FGFR4 in disease",
              color: "#F73528",
              size: 7.7815,
              id: "Signaling by FGFR4 in disease"
            }
          },
          {
            data: {
              name: "Regulation of TP53 Degradation",
              color: "#E5C494",
              size: 9.0309,
              id: "Regulation of TP53 Degradation"
            }
          }
        ],

        edges: [
          {
            data: {
              source: "PIP3 activates AKT signaling",
              target: "Constitutive Signaling by Aberrant PI3K in Cancer",
              width: 3.9441
            }
          },
          {
            data: {
              source: "PIP3 activates AKT signaling",
              target: "PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling",
              width: 4.0825
            }
          },
          {
            data: {
              source: "Constitutive Signaling by Aberrant PI3K in Cancer",
              target: "PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling",
              width: 4.3205
            }
          },
          {
            data: {
              source: "PIP3 activates AKT signaling",
              target: "RAF/MAP kinase cascade",
              width: 3.1623
            }
          },
          {
            data: {
              source: "Constitutive Signaling by Aberrant PI3K in Cancer",
              target: "RAF/MAP kinase cascade",
              width: 3.496
            }
          },
          {
            data: {
              source: "PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling",
              target: "RAF/MAP kinase cascade",
              width: 3.4028
            }
          },
          {
            data: {
              source: "Fanconi Anemia Pathway",
              target: "TP53 Regulates Transcription of DNA Repair Genes",
              width: 2.1082
            }
          },
          {
            data: {
              source: "RAF/MAP kinase cascade",
              target: "Signaling by FGFR3 fusions in cancer",
              width: 2.1693
            }
          },
          {
            data: {
              source: "PIP3 activates AKT signaling",
              target: "Downstream signal transduction",
              width: 2.1822
            }
          },
          {
            data: {
              source: "Constitutive Signaling by Aberrant PI3K in Cancer",
              target: "Downstream signal transduction",
              width: 2.4254
            }
          },
          {
            data: {
              source: "PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling",
              target: "Downstream signal transduction",
              width: 2.357
            }
          },
          {
            data: {
              source: "RAF/MAP kinase cascade",
              target: "Downstream signal transduction",
              width: 2.357
            }
          },
          {
            data: {
              source: "Signaling by FGFR3 fusions in cancer",
              target: "Downstream signal transduction",
              width: 3.3333
            }
          },
          {
            data: {
              source: "RAF/MAP kinase cascade",
              target: "Signaling by FGFR4 in disease",
              width: 2.1693
            }
          },
          {
            data: {
              source: "Signaling by FGFR3 fusions in cancer",
              target: "Signaling by FGFR4 in disease",
              width: 3.7796
            }
          },
          {
            data: {
              source: "Downstream signal transduction",
              target: "Signaling by FGFR4 in disease",
              width: 3.3333
            }
          }
        ]
      })
    );
  }
});

server.start(err => {
  if (err) throw err;
  console.log("server running at: ", server.info.uri);
});