How to get `fcm_options.link` functioning in firebase web notifications

UPDATE: I worked out what the issue was - my service worker was using the importScripts function, but I was using an out-of-date version of the firebase script that didn't support fcm_options.link. I changed it to my current version of firebase (5.8.5) and it works. All sorted!

in notification try This

"notification":{
"title":"IssA",
"body":"Lafi",
"icon": "Icon URL",
"click_action": "Your URL here"
}