Test for #88311

• Any @jrieken
• Windows @gregvanl

Complexity: 3

Background
TS 3.8 adds call hierarchy support for JavaScript and TypeScript

Testing
Using typescript 3.8+ in your workspace, test using the call hierarchy UX to explore a JavaScript and TypeScript code base. Some things to check:

• Are any calls missed?
• Are any of the linked to locations incorrect?
• Is the displayed information correct?
• Test edge cases such as recursive functions.