| /node_modules/ | |
| bundle.js |
This example demonstrates how the ol package can be used with Rollup.
Clone the project.
git clone git@gist.github.com:8beb328ea72b36446fc2198d008287de.git ol-rollup
Install the project dependencies.
cd ol-rollup
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 Rollup</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-rollup", | |
| "version": "1.0.0", | |
| "description": "Example using OpenLayers with Rollup", | |
| "scripts": { | |
| "start": "rollup --config rollup.config.js --watch", | |
| "build": "rollup --config rollup.config.js" | |
| }, | |
| "devDependencies": { | |
| "rollup": "^0.61.2", | |
| "rollup-plugin-commonjs": "^9.1.3", | |
| "rollup-plugin-node-resolve": "^3.3.0", | |
| "rollup-plugin-terser": "^1.0.1" | |
| }, | |
| "dependencies": { | |
| "ol": "^5.0.0" | |
| } | |
| } |
| import cjs from 'rollup-plugin-commonjs'; | |
| import node from 'rollup-plugin-node-resolve'; | |
| import {terser} from 'rollup-plugin-terser'; | |
| const production = !process.env.ROLLUP_WATCH; | |
| export default { | |
| input: 'main.js', | |
| output: [ | |
| {file: 'bundle.js', format: 'iife'} | |
| ], | |
| plugins: [ | |
| node(), | |
| cjs(), | |
| production && terser() | |
| ] | |
| }; |
is good