JavaScript boy and “lovely thoughtleader” 
he/him 
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Pros of globals: - You'll be requiring them anyway - Easier for a test runner to inject Cons: - Globals introduces more environment variance - Have to explicitly tell your linter/typechecker that they're valid globals
Also another con is that it makes it significantly harder to introduce new testing utilities provided by the framework. You'll either need to tack it onto an existing global or introduce another one.
The more you tamper with global state, the more you alter the program being tested. As a result, can you trust your tests?
I don't know why anyone would use globals in an import/export world, they only made sense in like the pre-module Hella Old Days
import { describe, it } from “framework” Not hard to copy paste a single line. No magic.
It could be a hybdrid solution, use the same globals as jest but also allow import new utilities
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