JSON data of all danish postal codes.
var codes = require('postal-codes-denmark');
codes === codes.denmark; // true
codes[codes.length - 1];
// { code: "9990", city: "Skagen", street: "", company: "" }
codes[codes.denmark.length - 1];
// { code: "9990", city: "Skagen", street: "", company: "" }
codes.greenland[0];
// { code: "3900", city: "Nuuk", street: "", company:"" }