Rule for this usage in beforeRouteEnter

[przemyslawjanpietrzak]

I would like to propose rule for checking if method beforeRouteEnter uses this in her body. Error Cannot read property 'someMethod' of undefined can be very dangerous especially when only 1 method has no access to this.

[ ] Enforces code style (layout)
[X ] Warns about a potential error (problem)
[ ] Suggests an alternate way of doing something (suggestion)
[ ] Other (please specify:)

<script>

export default {
	beforeRouteEnter(to, from, next) {
		this.someMethod();
	},
</script>

Additional context
docs: https://router.vuejs.org/guide/advanced/navigation-guards.html#in-component-guards