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@tschaub /.gitignore
Last active Aug 13, 2018

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OpenLayers + Webpack
/node_modules/
bundle.js

OpenLayers + Webpack

This example demonstrates how the ol package can be used with webpack 2.

Clone the project.

git clone git@gist.github.com:79025aef325cd2837364400a105405b8.git ol-webpack

Install the project dependencies.

cd ol-webpack
npm install

Create a bundle for the browser.

npm run build

Open index.html to see the result.

open index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Using OpenLayers with Webpack</title>
<link rel="stylesheet" href="https://openlayers.org/en/latest/css/ol.css" type="text/css">
<style>
html, body {
margin: 0;
height: 100%;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script src="./bundle.js"></script>
</body>
</html>
import {Map, View} from 'ol';
import TileLayer from 'ol/layer/Tile';
import XYZ from 'ol/source/XYZ';
new Map({
target: 'map',
layers: [
new TileLayer({
source: new XYZ({
url: 'https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png'
})
})
],
view: new View({
center: [0, 0],
zoom: 2
})
});
{
"name": "ol-webpack",
"version": "1.0.0",
"description": "Example using OpenLayers with Webpack",
"scripts": {
"build": "webpack --config webpack.config.js --mode production"
},
"devDependencies": {
"webpack": "^4.12.1",
"webpack-command": "^0.3.0"
},
"dependencies": {
"ol": "^5.0.0"
}
}
const webpack = require('webpack');
module.exports = {
entry: './main.js',
output: {
path: __dirname,
filename: 'bundle.js'
},
};
@juusechec

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juusechec commented Mar 10, 2017

Excelente, lo probaré. Gracias.

@hutzelknecht

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hutzelknecht commented Mar 22, 2017

Nice - thanks for this - was waiting for this change. will try as soon as i return from the FossGIS 2017

@darkscript

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darkscript commented Jan 16, 2018

Great guide, thanks, am trying to use webpack with ol and ol-ext, got import export problem, @tschaub, would you please check this simple repo and maybe you will see what's the issue. Thanks

@sbowler

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sbowler commented Aug 10, 2018

Not sure if this is the best place to put this, but I was noticing OL is a very large part of my webpack build even though I'm using very little of OL currently with a blank canvas map. Is there some way to optimize this? I thought part of the point of going to modules like this was so that it doesn't need to pull in a bunch of stuff you're not using.

This is basically the extent of my code

import 'ol/ol.css';
import { Map, View } from 'ol';
import * as Control from 'ol/control';

this.$olMap = new Map({
    target: this.$el,
    controls: Control.defaults({
    rotate: true,
    zoom: true
  }),
  layers: layers.getLayers(),
  view: this.view
});

webpack analysis:
olwebpack

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