old_contents: var express = require("express");
  var router = express.Router(); // eslint-disable-line new-cap
  
  /* GET home page. */
  
  router.get("/", function handleIndexRequest(req, res) {
    res.render("pubmedRetraction");
  });
  
  /* API endpoint for the frontend to get a particular
   * chart.
   *
   * Parameters include 'name', which specifies the name
   * of the chart that we want to get.
   */
  router.get("/get_bar_chart", function (req, res) {
      // Dummy Values
    var values = {
      continentYear: [
        ["Australia", 5],
        ["Asia", 5],
        ["Europe", 10],
        ["South America", 15],
        ["North America", 20]
      ],
      countryYear: [
        ["Australia", 10],
        ["United States", 5],
        ["France", 15],
        ["Canada", 30],
        ["Russian Federation", 10]
      ],
      journalYear: [
        ["Science", 5],
        ["Nature", 10],
        ["Pharmacology", 3],
        ["Radiology", 20],
        ["Harvard Law Review", 15]
      ]
    };
  
    if (Object.keys(values).indexOf(req.query.name) === -1) {
      res.json({
        "result": "failure",
        "reason": "Don't know how to get chart " + req.query.name
      });
    } else {
      res.json({
        "result": "success",
        "data": values[req.query.name].map(function (v) {
          return {
            name: v[0],
            value: v[1]
          };
        })
      });
    }
  });
  
  module.exports = router;
  
new_contents: var express = require("express");
  var router = express.Router(); // eslint-disable-line new-cap
  
  /* GET home page. */
  
  router.get("/", function handleIndexRequest(req, res) {
    res.render("pubmedRetraction");
  });
  
  /* API endpoint for the frontend to get a particular
   * chart.
   *
   * Parameters include 'name', which specifies the name
   * of the chart that we want to get.
   */
  router.get("/get_bar_chart", function (req, res) {
    // Dummy Values
    var values = {
      continentYear: [
        ["Australia", 5],
        ["Asia", 5],
        ["Europe", 10],
        ["South America", 15],
        ["North America", 20]
      ],
      countryYear: [
        ["Australia", 10],
        ["United States", 5],
        ["France", 15],
        ["Canada", 30],
        ["Russian Federation", 10]
      ],
      journalYear: [
        ["Science", 5],
        ["Nature", 10],
        ["Pharmacology", 3],
        ["Radiology", 20],
        ["Harvard Law Review", 15]
      ]
    };
  
    if (Object.keys(values).indexOf(req.query.name) === -1) {
      res.json({
        "result": "failure",
        "reason": "Don't know how to get chart " + req.query.name
      });
    } else {
      res.json({
        "result": "success",
        "data": values[req.query.name].map(function (v) {
          return {
            name: v[0],
            value: v[1]
          };
        })
      });
    }
  });
  
  module.exports = router;
  
subject: Clean indentation