ts-migrate VS dependency-cruiser

Airbnb converted many millions of lines gradually using automation and wrote about it:

https://medium.com/airbnb-engineering/ts-migrate-a-tool-for-...

And also open sourced the tooling:

https://github.com/airbnb/ts-migrate

Are you migrating with ts-migrate?

When you migrate your entire project over to TypeScript, errors like "undefined is not a function", syntax errors, or reference errors should no longer exist in your codebase. Thankfully, this is not as daunting as it sounds. Migrating your entire Node.js application to TypeScript can be done incrementally so that you can start reaping the rewards immediately in crucial parts of the codebase. You can also adopt a tool like ts-migrate if you intend to perform the migration in one go.

Flow to ts — helps to produce raw migration from Flow to TS files and reduces monkey job. TS migrate — helps convert JS files to Typescript files. A great introduction can be found here.

💡 I typed it using ts-migrate ts-migrate is a tool I strongly recommend. It's been developed by Airbnb to help to migrate easily JavaScript projects to TypeScript.

When you decide to migrate, I recommend checking https://github.com/airbnb/ts-migrate may speed few migration steps (but it wont solve missing types/interfaces)

You can use AirBnb's ts-migrate tool or try a more direct tactic following the Migrating from JavaScript guide.

Take a look at https://github.com/airbnb/ts-migrate

When you migrate your entire project over to TypeScript, errors like "undefined is not a function", syntax errors, or reference errors should no longer exist in your codebase. Thankfully, this is not as daunting as it sounds. Migrating your entire Node.js application to TypeScript can be done incrementally so that you can start reaping the rewards immediately in crucial parts of the codebase. You can also adopt a tool like ts-migrate if you intend to perform the migration in one go.

With dependency-cruiser, you can enforce which imports are allowed. This enables you to create an architecture fitness function that ensures your code continues to adhere to the initial design. You can also visualize your dependencies to gain a clearer understanding of your code's actual structure, allowing you to compare it with your mental model and make improvements where necessary.

something like https://github.com/sverweij/dependency-cruiser maybe https://github.com/pahen/madge or https://github.com/antoine-coulon/skott

I've personally fallen in love with Dependency Cruiser, which lets you set any arbitrary import rules you want on your repository. With it, you can enforce common things, like, "You can only import through the index file, if one exists", but you can also make custom-tailored rules for your specific project. For example, maybe your project is divided into three large folders - folder1 is allowed to import from folder2 and folder3, folder2 can import from folder3, and folder3 can not import from anyone else. Well, you can enforce that too, or whatever you need.

Dependency Cruiser works great, can even render visuals:

https://github.com/sverweij/dependency-cruiser

NX[0] also has logic for handling this issue

[0]: https://nx.dev/

I have a dependency-cruiser script that enforces codebase import rules, which I want checked on each dev hot-reload build and prod build.

Great project!

One feature request: Running the npx command searched only for the js files, not for the ts files. When I built deprank locally with yarn, it also showed the ts files. After looking at dependency-cruiser figure it has to do with what typescript compilers are available where.

It would be great if the npx command you provide in your readme would work regardless of my local setup - dependency-cruiser has documentation and one example of a suitable npx command here: https://github.com/sverweij/dependency-cruiser/blob/develop/...

My suggestion would be to check if any ts file is part of the extension option (i.e. --ext=".js,.jsx, .ts, .tsx") and only then do the magic needed to also show ts files.

The first step is to install dependency-cruiser.

You may have a look at dependency cruiser.