How to resolve circular dependencies in typescript

Setup:

Imagine the following setup:

There is an api that contains let's say a folder foo and bar. These folders export all their public stuff to their local index.ts which will just re-export the public stuff via export * from [...] to make it more convenient.

In my example, there is a circular dependency, because foo.ts requires a part of bar and vice-versa - and I totally understand why this is the case.

See screenshot below:

Question:

How can I resolve this in an environment with hundreds of classes, functions, constants, types, enums, etc. effectively with TypeScript? I imagine that I need some kind of helper file to resolve the commonalities.

Even if I created some kind of foobar folder that requires foo and bar and then exports everything into one big export file it'll probably get messy really soon. What if I need only bar or only foo? Is a named export good enough?

I also want to avoid problems in the future, so I am looking for a robust solution. The call precedence is not the main issue that I try to tackle here. It's more about how to set up the dependencies in a smart way.

Goal:

I'd like to use both foo and bar separately and they should be able to share functions/types/enums/interfaces etc. with each other.

A very simple code snippet can be found here:

codesandbox.io

Via Active questions tagged javascript - Stack Overflow https://ift.tt/LnEeWQd

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