In notify, why is the return not checked when subs is empty

[lakei-edward]

Version

2.7.14

Reproduction link

github.com

Steps to reproduce

There is no

What is expected?

const subs = this.subs.filter(s => s) as DepTarget[]
if (subs.length === 0) return

What is actually happening?

subs Keep running down

[Alfred-Skyblue]

When subs is an empty array, neither the for loop nor the sort will execute, so there is no need to check.