score:0
Accepted answer
you have to create an instance from firebase
class then you can access to its methods.
const firebase = new firebase();
firebase.isinitialized()
unless you define isinitialised
as static.
static isinitialized() {
return new promise(resolve => {
this.auth.onauthstatechanged(resolve)
})
}
then you can call it like this.
firebase.isinitialized()
update
your problem is a typo, your calling it with isinitialised
which should be isinitialized
Source: stackoverflow.com
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