isServiceWorker

The isServiceWorker function checks if the code is running in a Service Worker.

Syntax

isServiceWorker(): boolean;

Parameters

This function does not take any parameters.

Returns

Type	Description
boolean	true if running in a Service Worker, false otherwise

Examples

isServiceWorker();
// => true (in Service Worker)
// => false (in other environments)

Notes

• Checks for the existence of the global ServiceWorkerGlobalScope object and whether self is an instance of that scope.
• Useful for conditioning Service Worker-specific executions.

References

• https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerGlobalScope