default exports not working

[samparsky]

For example, the below code does not generate the correct typing definition

/**
 * @module test1
 */

class One {}
export default One
exports.tag = "one"

It generates the below type description which does not include the default export

declare module 'test1' {
    class One { };
    export var tag: string;
}

It's missing the default export

[wehrstedt]

In resolveNamespaceMember is some logic which handles the export-flag. My first assumption is that this could be moved to the handleFlags function. Otherwise we have to add this logic to resolveModuleMember, too.

Would you like to contribute to this?

[samparsky]

I could work on it if you can explain further

[wehrstedt]

I think the easiest way is to checkout the project. run yarn install and add a test like this

it.only("should export 'default' classes, async () => {
     const data = await parseData(`<your jsdoc / javascript goes in here`);
     const parser = new JSDocTsdParser();

     // Step in here to check why the flag is not set
     parser.parse(data);

     // Get the transformed class
     const result = parser.resolveMembership();
     result.should.include.keys("One");
     const classDeclaration: dom.ClassDeclaration= result.get("One") as dom.ClassDeclaration;
     
      // Ensure that the flag is set correctly
      expect(classDeclaration.flags).to.equal(dom.DeclarationFlags.ExportDefault);

      // You don't have to do this in the test, but you can get the result dts with
      const dts = parser.generateTypeDefinition();
      console.log(dts);
});

You can debug the test with vs code config Mocha Current File. Take a look at the handleFlags-function which is called here. As you can see here there is no handling for "default export", I assume that is the responsible point.