swagger-petstore VS ts-migrate

Swagger offers more than just a user-friendly interface for exploring APIs. It also provides multiple generators that can produce code typically written by hand. As an Angular developer, this blog post will focus on the typescript-angular generator.

Failed to create a client for Java. The generator imports Java's types instead of TeamCity's. There are bugs described for the Java client in both the Swagger generator and the OpenAPI generator. Let's see how the generator behaves when building a Kotlin client.

[swagger-codegen](https://github.com/swagger-api/swagger-codegen) generates code from an OpenAPI definition, and it supports Rust code output (client and/or server).

Swagger contains three greats tools to work with the specification: Swagger UI, Swagger Editor and Swagger Codegen. The Swagger UI renders OpenAPI specs as interactive API documentation, Swagger Editor is a browser-based editor where you can write OpenAPI specs and Swagger Codegen generates server stubs and client libraries from an OpenAPI spec like the OpenAPI generator.

We ran into some minor issues (#1201, #1210, #1355, #1356 and #1769) and fixed some stuff we stumbled upon along the way, although it didn't really bother us as well (#1451 and #1769).

I am interested in integrating a swagger-codegen generated Python server with an existing Flask application. swagger-codegen generates a Python implementation based on the Connexion library from a Swagger API specification.

The method takes a query, String, and a completion block, (Result<[String], Error>) -> Void, which is triggered once the request finishes. Its internal implementation doesn't really matter since it could be from an external framework or generated by a code generator from the API specification.

The Java codegen options are here: https://github.com/swagger-api/swagger-codegen/issues/7795 (believe it or not).

Creating TS types/interfaces manually can be tedious. But, if you have JSON responses of your APIs, you can quickly convert those JSON responses to TS interfaces using VS Code extension Paste JSON as Code. Also, if your backend already uses Swagger for API, you can auto-generate all the TS types of your API models using swagger-codegen

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.