ESM doesn't need to break the ecosystem

• TypeScript

  1,305 97,944 9.9 TypeScript

  TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  

Yargs ships a dual CJS/ESM module using a combination of TypeScript, Rollup, and modern Node.js features, here's how:

• yargs

  38 10,928 5.0 JavaScript

  yargs the modern, pirate-themed successor to optimist.

  

We added the type: module field to our package.json, to indicate that by default files with a .js extension should be considered to be ECMAScript modules (this is a workaround for the fact that TypeScript does not currently support the .mjs extension, and should be avoided if not using TypeScript, or once the issue is resolved).

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• rollup-plugin-ts

  1 484 7.2 TypeScript

  A TypeScript Rollup plugin that bundles declarations, respects Browserslists, and enables seamless integration with transpilers such as babel and swc

Note the @wessberg/rollup-plugin-ts dependency, this handles the translation between TypeScript and CommonJS.

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