Skip to main content

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:

enter image description here

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
Labels:

Comments

Post a Comment

Popular posts from this blog

Where and how is this Laravel kernel constructor called? [closed]

Where and how is this Laravel kernel constructor called? public fucntion __construct(Application $app, $Router $roouter) { } I have read the documentation and some online tutorial but I can find any clear explanation. I am learning Laravel and I am wondering where does this kernel constructor receives its arguments from. "POSTMOTERM" CLARIFICATION: Here is more clarity.I have checked the boostrap/app.php and it is only used for boostrapping the interfaces into the container class. What is not clear to me is where and how the Kernel class is instatiated and the arguments passed to the object calling the constructor.Something similar to; obj = new kernel(arg1,arg2) or, is the framework using some magic functions somewhere? Special gratitude to those who burn their eyeballs and brain cells on this trivia before it goes into a full blown menopause alias "MARKED AS DUPLICATE". To some of the itchy-finger keyboard warriors, a.k.a The mods,because I believe in th...
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more