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// import the necessary modules'use strict';
const mongoose = require('../../lib');const Schema = mongoose.Schema;
// create an export function to encapsulate the model creationmodule.exports = function() {  // define schema  // NOTE : This object must conform *precisely* to the geoJSON specification  // you cannot embed a geoJSON doc inside a model or anything like that- IT  // MUST BE VANILLA  const LocationObject = new Schema({    loc: {      type: { type: String },      coordinates: []    }  });  // define the index  LocationObject.index({ loc: '2dsphere' });
  mongoose.model('Location', LocationObject);};