This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

Type Object
Mandatory No

The serviceworker member describes a service worker that the developer intends to install to control the PWA.


"serviceworker": {
  "src": "./serviceworker.js",
  "scope": "/app",
  "type": "",
  "update_via_cache": "none"


Service worker contain the following values (only src is required):

Member Description
src The URL to download the service worker script from. This is the only required member of the serviceworker member.
scope A string representing a URL that defines a service worker's registration scope; that is, what range of URLs a service worker can control. This is usually a relative URL, relative to the base URL of the application. By default, the scope value for a service worker registration is set to the directory where the service worker script is located.
type ?

Whether the user agent cache should be bypassed when fetching the service worker.

Browser compatibility

BCD tables only load in the browser