Esri Leaflet JSPM Example

Example of using Esri Leaflet with JSPM!

1. Install JSPM npm install -g jspm
2. Install a local web server npm install -g http-server
3. Fork and clone this repo
4. cd into esri-leaflet-jspm-example
5. Install dependencies with jspm install
6. Start the web server http-server .
7. Open http://localhost:8080 in your browser.

Single File Build

You can follow any of JSPM's production workflows to get a single file suitable for production. The easiest way is to run the bundle command

jspm bundle main --inject --minify

Reload the browser and you should see a minified production build used.

If you would prefer to bundle your entire application for use in a single <script> tag you can also use jspm bundle-sfx main and then replace all the script references with the resulting file.

Smaller Builds Using the Esri Leaflet Bundler

This sample includes 2 modules from Esri Leaflet:

• featureLayer
• basemapLayer

and 3 modules from Esri Leaflet Geocoder:

• geosearch
• arcgisOnlineProvider
• featureLayerProvider

You can create a custom build that includes all of these modules with the Esri Leaflet Bundler. This will reduce the size of your build to from 54.63 kB (gzipped) to 48.86 kB (gzipped), an 11% reduction.

To set this project up for custom builds you will need to install the dependencies with NPM rather then JSPM:

1. Run npm init to create a package.json
2. Run npm install esri-leaflet@latest
3. Run npm install esri-leaflet-geocoder@latest

Then create a file called esri-leaflet-custom-build.js with the following contents:

import {
  featureLayer,
  basemapLayer
} from 'esri-leaflet';

import {
  geosearch,
  arcgisOnlineProvider,
  featureLayerProvider
} from 'esri-leaflet-geocoder';

export { featureLayer };
export { basemapLayer };
export { geosearch };
export { arcgisOnlineProvider };
export { featureLayerProvider };

export default {
  featureLayer: featureLayer,
  basemapLayer: basemapLayer,
  geosearch: geosearch,
  arcgisOnlineProvider: arcgisOnlineProvider,
  featureLayerProvider: featureLayerProvider
};

Note that since will will compile this to ES 6 modules we can export not just the default export but exports for each individual module.

Then run esri-leaflet-bundler esri-leaflet-custom-build.js -o esri-leaflet-custom.js --sourcemap inline --format es6 to generate your custom build.

Then replace the references to esri-leaflet and esri-leaflet geocoder in your in main.js with references to your custom build:

import { featureLayer, basemapLayer } from './esri-leaflet-custom';
import { geosearch, arcgisOnlineProvider, featureLayerProvider } from './esri-leaflet-custom';

Contributing

Esri welcomes contributions from anyone and everyone. Please see our guidelines for contributing.

Licensing

Copyright 2015 Esri

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

A copy of the license is available in the repository's LICENSE file.

[](Esri Tags: ArcGIS Web Mapping Leaflet JSPM ES6 ES2015) [](Esri Language: JavaScript)