Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Note: This feature is available in Web Workers.
The recordsAvailable read-only property of the BackgroundFetchRegistration interface returns true if there are requests and responses to be accessed. If this returns false, then match() and matchAll() can't be used.
A Boolean.
Logging this property to the console returns true or false to indicate if there are records.
console.log(bgFetch.recordsAvailable);