My take on unit tests is to avoid them. Write your software ina way it could be tested easily, as this will keep your code decoupled, will force you to explicitly inject external stuff and more.
But if you have a decent type system and a bunch of integration/end-to-end tests, unit tests are not worth the hazzle.
After all you dont care about implementation details as long as your module/component/insert-similar-here does the correct thing
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