Parcel 2: Problem with emitted TypeScript typing file

[AKPWebDesign]

🐛 bug report

When using Parcel to build a TypeScript project and including the types field in package.json, a typing file is created, but is incomplete and unable to be used.

🎛 Configuration (.babelrc, package.json, cli command)

See my repro repo at https://github.com/AKPWebDesign/typing-problem

🤔 Expected Behavior

A types file or files containing everything necessary to provide type hinting and checking should be output when including the types field in package.json. For example, this is what tsc --emitDeclarationOnly yields:

import React from 'react';
interface Props {
    value: string;
}
declare const Component: React.FC<Props>;
export default Component;

😯 Current Behavior

A broken types file is generated, which doesn't contain any type information:

export default Component;

//# sourceMappingURL=index.d.ts.map

🔦 Context

The context here is that I have a Typescript React component library that I'm trying to build and publish for use in another Typescript React project.

💻 Code Sample

https://github.com/AKPWebDesign/typing-problem

🌍 Your Environment

Software	Version(s)
Parcel	^2.0.0-nightly.130
Node	v12.x
npm/Yarn	yarn 1.22.0
Operating System	WSL 4.4.0-18362-Microsoft / macOS Catalina (10.15.3)

[wdoug]

I wonder if this could be related to #4936

[nguyenthetoan]

I'm now also facing this issue, does anyone have any solutions yet?

updates:
I fixed it by changing my export in index.ts

import Component from './Component';

// export { Component }; <= this didnt work
export default Component;