service_worker 0.2.3

Service Worker API for Dart #

Dart-y wrappers for the ServiceWorker APIs.

Warning: the API is experimental, and subject to change.

Service Workers #

A service worker is an event-driven worker registered against an origin and a path. It takes the form of a JavaScript file that can control the web page/site it is associated with, intercepting and modifying navigation and resource requests, and caching resources in a very granular fashion to give you complete control over how your app behaves in certain situations (the most obvious one being when the network is not available.)

A service worker is run in a worker context: it therefore has no DOM access, and runs on a different thread to the main JavaScript that powers your app, so it is not blocking. It is designed to be fully async; as a consequence, APIs such as synchronous XHR and localStorage can't be used inside a service worker.

Quickstart #

Register the Service Worker from your application script, like in example/web/main.dart:

import 'package:service_worker/window.dart' as sw;

void main() {
  if (sw.isSupported) {
  } else {
    print('ServiceWorkers are not supported.');

Write the Service Worker in a separate script, like in example/web/sw.dart:

import 'package:service_worker/service_worker.dart';

void main(List<String> args) {
  onInstall.listen((event) {
    print('ServiceWorker installed.');

0.2.3 #

  • Support Dart 2 stable.

0.2.2 #

  • Fix runtime errors casting List

0.2.1 #

  • Fixed a use of dynamic as bottom by adding type parameters to futureToPromise.

0.2.0 #

  • Updated to work with dart:html for 2.0.0-dev.40.0:
    • ExtendableEvent, FetchEvent removes deepPath or scoped members.
    • Added composed and composedPath members.
  • Migrate off deprecated APIs from the core libraries.
  • Fixed a strong-mode cast warning that will become an error soon.

0.1.2 #

  • Style cleanup: preferring single quotes.
  • Removed generic type comments.

0.1.1 #

  • Remove package:func dependency.

0.1.0 #

  • Upgraded dependencies.

0.0.16 #

  • Remove 'implements' from JS facade methods, as it seems to break with dart2js.

0.0.15 #

  • Implement new methods for classes that implement Event.

0.0.14 #

  • Don't return ServiceWorker instances when the underlying JS object is null.
  • Mask types from JS facade, to prevent type check errors in Dartium.

0.0.13 #

  • expose Notification.close()
  • expose ServiceWorkerClientsMatchOptions

0.0.12 #

  • expose keys in PushSubscription

0.0.11 #

  • expose ServiceWorkerRegistration.jsObject
  • fix a few typing bug

0.0.10 #

  • export ShowNotificationAction

0.0.9 #

  • PushManager.hasPermission() is a deprecated API and it doesn't work in Chrome anymore, clients should use permissionState() instead.

0.0.8 #

  • ServiceWorkerClient.postMessage() to use List as transfer objects parameter.
  • ServiceWorker.postMessage(): any Transferable object can be set, not only MessagePorts.

0.0.7 #

  • removed Worker interface from JS facade, solves Dartium issue

0.0.1 - 0.0.6 #

0.0.6 #

  • fixed Cache.keys()

0.0.5 #

  • add support for WorkerLocation

0.0.4 #

  • fetch() with RequestInit
  • support for Headers cloning

0.0.3 #

  • fix Cache.put() signature

0.0.2 #

  • top-level fields and methods

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  service_worker: ^0.2.3

2. Install it

You can install packages from the command line:

with pub:

$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:service_worker/service_worker.dart';
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Learn more about scoring.

We analyzed this package on Sep 16, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.5.0
  • pana: 0.12.21


Detected platforms: web

Primary library: package:service_worker/service_worker.dart with components: html, js.

Maintenance suggestions

The package description is too short. (-13 points)

Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.

Package is getting outdated. (-11.23 points)

The package was last published 58 weeks ago.

Maintain an example.

None of the files in the package's example/ directory matches known example patterns.

Common filename patterns include main.dart, example.dart, and service_worker.dart. Packages with multiple examples should provide example/

For more information see the pub package layout conventions.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.40.0 <3.0.0
js ^0.6.1 0.6.1+1