export * as x from "..." are never deferred

[mischnic]

🐛 bug report

export-namespace-as reexports are never deferred, even if they are statically unused.

🤔 Expected Behavior

If b isn't imported, then export * as b from "./other.js"; can be deferred.

😯 Current Behavior

It's not deferred.

💁 Possible Solution

parcel/packages/core/core/src/AssetGraph.js

Line 390 in c8a64c9

!dependencySymbols.has('*')

💻 Code Sample

{
	"sideEffects": [
		"index.js"
	]
}

// index.js
import { a } from "./lib.js";
console.log(a);

// lib.js
export const a = 2;
export * as b from "./other.js";

// other.js
export const x = 22;
export const y = 33;

🌍 Your Environment

Software	Version(s)
Parcel	c8a64c9

[rmja]

I am also having this issue. Basically what I want is to have something like this in index.ts:

export * as SomeExternalName from "./internal-module-with-exports;

So that the consumer of the library can do:

import { SomeExternalName } from "my-lib";
SomeExternalName.someFunction();

@mischnic Have you found a workaround?

[mischnic]

Are you seeing some error?

This issue is about an optimization to include less unused code in the final bundle.

[rmja]

@mischnic I think it is related to this:
#5911

[rmja]

I get this error:

> parcel build

🚨 Build failed.

@parcel/transformer-typescript-types: node.exportClause.elements is not iterable

  TypeError: node.exportClause.elements is not iterable
  at visit (C:\Source\Utiliread\src\ur-policystore-client\node_modules\@parcel\transformer-typescript-types\lib\collect.js:78:47)
  at visitNodes (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:87646:48)
  at Object.visitEachChild (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:88126:56)
  at visit (C:\Source\Utiliread\src\ur-policystore-client\node_modules\@parcel\transformer-typescript-types\lib\collect.js:124:43)
  at visitNode (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:87593:23)
  at Object.visitEachChild (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:88123:222)
  at visit (C:\Source\Utiliread\src\ur-policystore-client\node_modules\@parcel\transformer-typescript-types\lib\collect.js:124:43)
  at visitNodes (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:87646:48)
  at visitLexicalEnvironment (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:87686:22)
  at Object.visitEachChild (C:\Source\Utiliread\src\ur-policystore-client\node_modules\typescript\lib\typescript.js:88234:55)

[rmja]

Year, I guess that is in fact the issue that I am having. Thought they were related based on the title.

[mverissimo]

Any update on this?