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A library to support developers implementing Web Push notifications

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A library to support developers implementing Web Push notifications

Getting Started

To use the Propel library do the following:

  1. Install Propel with
    npm install --save propel-web-push
  2. Add

    to your web page
  3. Add a web app manifest to your page. It's required by Chrome.

  1. Use

    in your JavaScript.
    var PropelClient =;

    // Check if push is supported by the current browsers if (PropelClient.isSupported()) { // Initialise Push Client var propelClient = new PropelClient('/sw.js'); propelClient.addEventListener('statuschange', function(event) { if (event.permissionStatus === 'denied') { // Disable UI } else if (event.currentSubscription) { // Enable UI // Show that user is subscribed

      // Send the subscription object to your server
      fetch('/your-backend-api', {
        method: 'post',
        headers: new Headers().append('Content-Type', 'application/json'),
        body: JSON.stringify(event.currentSubscription)
    } else {
      // Enable UI
      // Show that user is not subscribed


    propelClient.subscribe(); // OR propelClient.unsubscribe(); }

  2. Check out the docs to learn more.


If you’ve found an error in this library, please file an issue:

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub.


Copyright 2015 Google, Inc.

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

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.

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