mongoose geojson

1const citySchema = new mongoose.Schema({
2  name: String,
3  location: {
4    type: {
5      type: String, // Don't do `{ location: { type: String } }`
6      enum: ['Point'], // 'location.type' must be 'Point'
7      required: true
8    },
9    coordinates: {
10      type: [Number],
11      required: true
12    }
13  }
14});

1const polygonSchema = new mongoose.Schema({
2  type: {
3    type: String,
4    enum: ['Polygon'],
5    required: true
6  },
7  coordinates: {
8    type: [[[Number]]], // Array of arrays of arrays of numbers
9    required: true
10  }
11});
12
13const citySchema = new mongoose.Schema({
14  name: String,
15  location: polygonSchema
16});