This allows a service worker to get its ServiceWorker object with self.serviceWorker in a service worker script and its current state with self.serviceWorker.state in the script.

Motivation

A service worker instance currently has no way to get its current lifecycle state. There's a bit of a hack one can do where you keep track of the current event as a global variable but that's error prone and doesn't capture the waiting periods correctly. The best way to solve this would be to just allow a service worker to get its ServiceWorker object in a service worker script.

Demo

• https://github.com/web-platform-tests/wpt/blob/master/service-workers/service-worker/global-serviceworker.https.any.js

Documentation

• https://github.com/w3c/ServiceWorker/issues/1077

Specification

Specification link

Status: Unknown standards status - check spec link for status

Status in Chromium

Blink components: Blink>ServiceWorker

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: Positive
• Safari: Positive
• Web Developers: Positive

Owners

• yutakasai@google.com
• shimazu@chromium.org

Intent to Prototype url

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Last updated on 2021-12-13