declare as namespace externs without namespaced module output

[Feiyang1]

I'm generating externs file from a d.ts file which defines an UMD module. In the output, the filename becomes the top level namespace. I want to generate externs without this top level namespace. Is it possible?

/**
 * @externs
 * @suppress {duplicate,checkTypes}
 */
// NOTE: generated by tsickle, do not edit.
// externs from :
/** @const */
var _$$index$d = {};
/** @const */
_$$index$d.A = {};

/**
 * @return {void}
 */
_$$index$d.A.hello = function() {};

the d.ts file:

declare namespace A {
    function hello(): void;
}

export = A;
export as namespace A;

[evmar]

We haven't yet figured out what it means to have externs from a module-shaped d.ts. I guess in your case because of the export as namespace, you want to generate some global A?

[Feiyang1]

Yep. I'd like to have

var A ={};
A.hello = function() {};

[evmar]

I think we don't have any support for this. If you'd like to hack it in for a one-time conversion, the code around

tsickle/src/externs.ts

Line 163 in d6b3a5d

if (isExternalModule) {

is relevant.

[Feiyang1]

thanks. Now I understand why it is doing this. I will probably just write a script to remove the export statements before feeding it into tsickle.

[evmar]

In TS, the export as namespace syntax means it appears both as a global and as a module, depending on some other factors that I forget right now. tsickle probably could use better support for d.ts files with that specific syntax but so far it doesn't know about it.