Using ECMAScript Modules: How to create imports with explicit file extensions?

I am generating a client using the openapi-generator.

The problem is that the project I want to use the generated code in requires imports with an explicit file extension (ECMAScript Modules). So, instead of

/* tslint:disable */
/* eslint-disable */
export * from './runtime';
export * from './apis/index';
export * from './models/index';

which will result in

TS2835: Relative import paths need explicit file extensions in ECMAScript imports when --moduleResolution is node16 or nodenext. Did you mean ./models/index.js?

I need the generator to create

/* tslint:disable */
/* eslint-disable */
export * from './runtime.js';
export * from './apis/index.js';
export * from './models/index.js';

Is there a way to configure the generator s.t. this works? I'd like to avoid a fix-imports.ts script here..

Start by locating the TypeScript generator templates that produce the shown runtime, API, and model exports, then check the available configuration options for import paths. Generate a client using Node16 or NodeNext module resolution and verify that relative imports use explicit .js extensions without requiring a separate fix-imports.ts script.