Support TypeScript 5.7 "rewriteRelativeImportExtensions" option

[Azlond]

TypeScript 5.7 will support a new compilerOption called "rewriteRelativeImportExtensions", which allows importing .ts extensions for relative paths.

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Expected Behavior

Allow for a config option in tsoa.json to have tsoa output .ts imports in routes.ts.

// should create the following import in routes.ts when rewriteRelativeImportExtensions is enabled
import { UserController } from './../src/controllers/userController.ts';

Current Behavior

npx tsoa spec-and-routes creates the following routes.ts:

import { UserController } from './../src/controllers/userController.js';
--------------------------------^
// This relative import path is unsafe to rewrite because it looks like a file name, but actually resolves to "../src/controllers/userController.ts".

Possible Solution

Allow for a rewriteRelativeImportExtensions-tsoa-config option, which would not rewrite the .ts-extensions to .js.

Or read the tsconfig.json used in the project and determine the rewriteRelativeImportExtensions setting.

Steps to Reproduce

1. Install TypeScript 5.7 beta
2. enable rewriteRelativeImportExtensions in tsconfig.json compilerOptions
3. use tsoa

Context (Environment)

Version of the library: [email protected]
Version of NodeJS: 20

• Confirm you were using yarn not npm: [X]

Detailed Description

Allow for a config option e.g. called rewriteRelativeImportExtensions, which supports the new TypeScript 5.7 feature rewriteRelativeImportExtensions

Breaking change?

None

[github-actions]

Hello there Azlond 👋

Thank you for opening your very first issue in this project.

We will try to get back to you as soon as we can.👀

[Azlond]

I can't see the comment for which I received an email, so I'll just reply to this issue in general.
There's no advantage over esm: true, as it's a different use case. rewriteRelativeImportExtensions allows to import .ts files, so that TypeScript-runtimes without build/transpile-step can correctly handle the file resolution.

You can see an example in the beta announcement I linked in my first message.