NextGIS Frontend

NextGIS Frontend

Github lerna version

NextGIS Code

A suite of frontend JavaScript libraries designed to accelerate the development of web-GIS applications using NextGIS software and services as a backend. NextGIS Frontend supports three major open-source GIS frameworks with unified interfaces.

Single-file bundles for rapid deployment of web-gis applications with NextGIS services

Bricks for build custom Web GIS frontend

Map-free libraries to interaction with NextGIS Web

Map-free tools for common purpose

  • utils – common development tools;
  • cache - caching for asynchronous functions;
  • cancelable-promise – a promise you can stop;
  • dom – collection of libraries for working with the DOM;

Explore how NextGIS frontend libraries are utilized in actual projects:

  • nglink (LIVE) – Server side - express.js with ngw-uploader; client - webpack, typescript, ngw-map.
  • russia-history – Russia history live web map (LIVE). Maplibre GL JS, NextGIS Web MTV api, layer load event listener. Webpacj and typescript.
  • clear_horizon_frontend – Clear horizon frontend. NextGIS Web auth system, leaflet typescript based webpack project.
  • webpack-template – Webpack based JavaScript template project.
  • walrus-ais – NgwMaplibreGL map with React.
  • wwf-oilspill – Emergency situations with oil spills (LIVE), minimal dependency typescript project with Leaflet.
  • oralhistory (LIVE) – Typescript, Vuetify, Maplibre GL JS and properties filter usage example.
  • petro2020 (LIVE). Native JavaScript for leaflet and Maplibre-gl-gs in one project.
  • nextgisweb_viewer – Service for viewing map resources from NextGIS Web (LIVE). Vuetify, typescript (outdated).
  • ngw_frontend_boilerplate. Parcel build (outdated).

Download and include with a script tag. [Package] will be registered as a global variable.

<script src="./lib/[package].global.js"></script>
var package = new Package(options);
<script type="module">
import Package from '[package]/lib/[package]';

Choose between unpkg:

<script src="[package]"></script>
<script src="[package]@[version]"></script>
<script src="[package]@[version]/lib/[file]"></script>

and jsdelivr

<script src="[package]"></script>
<script src="[package]@[version]/lib/[file]"></script>

[file] - [package].[format].prod.js


  • global - browser script
  • cjs - node module
  • esm-browser - browser module
  • esm-bundler - module for bundler systems

We recommend linking to a specific [version] number that you can update manually

npm install @nextgis/[package]

then import the [package] in the project modules

import Package from '@nextgis/[package]';
// or
import { Component, utility } from '@nextgis/[package]';

const package = new Package(options);
import { NgwMap } from '@nextgis/ngw-map';

import './leaflet-style-override.css';
import MapAdapter from '@nextgis/leaflet-map-adapter';
// OR
// import 'ol/ol.css';
// import MapAdapter from '@nextgis/ol-map-adapter';
// OR
// import 'maplibre-gl/dist/maplibre-gl.css';
// import MapAdapter from '@nextgis/maplibre-gl-map-adapter';

const ngwMap = new NgwMap(new MapAdapter(), {
target: "map",
qmsId: 448,
baseUrl: "",
resources: [2011, { resource: 222, fit: true }, { resource: "keyname" }],
ngwMap.onLoad().then(() => {
// do something
// from resource id
ngwMap.addNgwLayer({ resource: 2011 });
// by keyname
ngwMap.addNgwLayer({ resource: "keyname" });
// add vector layer from style resource
ngwMap.addNgwLayer({ resource: "style_keyname", adapter: "GEOJSON" });
// add first style from vector resource (if available)
ngwMap.addNgwLayer({ resource: "vector_keyname", adapter: "TILE" });

The resource can be id or keyname.


Add different NextGIS Web resource

First install Yarn

# Clone git through ssh
git clone
cd ./nextgis_frontend
# Install dependencies
yarn install
# Prepare packages
yarn run bootstrap
# Build all packages
yarn run prod
# Build demo app
yarn run demo

To copy the pages of universal examples from the demo/examples into the corresponding examples of frontend libraries run

yarn run examples
# Go to package directory (for example webmap)
cd ./packages/webmap
# Run build command
yarn run dev
# or
yarn run prod
# Run watch source files changes command
yarn run watch

Before publishing you should execute prod script

lerna run prod

To publish new version to git and npm run

lerna publish

When publishing, you will need to select a new version number. It is the same for all libraries. Dependencies between packages are solved automatically.

To publish a new package, run the following command in the package folder

npm publish --access=public

The tests are launched from the root project directory. Testing is performed for all packages.

npm t # run all test with coverage
npm run karma # run karma test in watch mode for development

Need to fix a bug or add a feature to NextGIS Frontend? We provide custom development and support for this software. Contact us to discuss options!