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: tsoa@6.2.1
Version of NodeJS: 20

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Detailed Description

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

Breaking change?

None