Types are not compatible with moduleResolution: "NodeNext" #2031

rollup-plugin-license@3.7.1 doesn't work with moduleResolution: "NodeNext".

With the usual import:

import rollupPluginLicense from 'rollup-plugin-license';

TypeScript resolves the CommonJS module as an object instead of a function, so calling the
plugin fails and the build breaks. The function can be reached with a manual .default
access, but that's not a safe workaround: depending on how the module is loaded, .default
is undefined at runtime (see
FalseExportDefault).

The reason is a mismatch between the types and the runtime:

• the package is CommonJS: "main": "dist/index.js", no exports field, no "type": "module";
• dist/index.js exports the plugin with module.exports = rollupPluginLicense;;
• dist/index.d.ts declares:

declare function rollupPluginLicense(options: Options): Plugin;

export default rollupPluginLicense;

For a CommonJS module, export default in the .d.ts describes module.exports.default,
which doesn't exist at runtime.
arethetypeswrong
confirms this - it reports "Incorrect default export" for all resolution kinds
(node10, node16 from CJS, node16 from ESM, bundler).

The types should use export = instead:

declare function rollupPluginLicense(options: Options): Plugin;

export = rollupPluginLicense;

One caveat: export = can't be combined with other export statements, so the exported
types (Options, Person, Dependency, ThirdParty, etc.) would need to be moved into
a declare namespace rollupPluginLicense block.

Would it be possible to fix this?