fix: export in library works only for last entry module by kb019 · Pull Request #20638 · webpack/webpack

kb019 · 2026-03-13T05:42:16Z

Summary

Until now when we were doing multiple imports in entry point as array, only the exports from the last entry would be available.With this PR, the exports should work for all the entry points.

What kind of change does this PR introduce?
This PR fixes the problem of exports only available from the last entry. They are fixed in three stages

1) when entry points is refrenced by other modules

Before

> ******/ 	// startup
> /******/ 	// Load entry module and return exports
> /******/ 	// This entry module is referenced by other modules so it can't be inlined
> /******/ 	__webpack_require__("./src/index.js");
> /******/ 	__webpack_require__("./src/scriptB.js");
> /******/ 	var __webpack_exports__ = __webpack_require__("./src/scriptC.js");
> /******/ 	var __webpack_export_target__ = self;
> /******/ 	for(var __webpack_i__ in __webpack_exports__) __webpack_export_target__[__webpack_i__] = __webpack_exports__[__webpack_i__];
> /******/ 	if(__webpack_exports__.__esModule) Object.defineProperty(__webpack_export_target__, "__esModule", { value: true });
> /******/

After


> `/******/ 	
> /******/ 	// startup
> /******/ 	// Load entry module and return exports
> /******/ 	// This entry module is referenced by other modules so it can't be inlined
> /******/ 	var __webpack_exports__ = __webpack_require__("./src/index.js");
> /******/ 	__webpack_exports__ = Object.assign({...__webpack_exports__},{...__webpack_require__("./src/scriptB.js")});
> /******/ 	__webpack_exports__ = Object.assign({...__webpack_exports__},{...__webpack_require__("./src/scriptC.js")});
> /******/ 	var __webpack_export_target__ = self;
> /******/ 	for(var __webpack_i__ in __webpack_exports__) __webpack_export_target__[__webpack_i__] = __webpack_exports__[__webpack_i__];
> /******/ 	if(__webpack_exports__.__esModule) Object.defineProperty(__webpack_export_target__, "__esModule", { value: true });
> /******/ 	
> /******/ })()`

2) When entry points depend on other chunks

Before

> /******/ 	// startup
> /******/ 	// Load entry module and return exports
> /******/ 	// This entry module depends on other loaded chunks and execution need to be delayed
> /******/ 	__webpack_require__.O(undefined, ["vendors-node_modules_jquery_dist_jquery_js"], () => (__webpack_require__("./src/index.js")))
> /******/ 	__webpack_require__.O(undefined, ["vendors-node_modules_jquery_dist_jquery_js"], () => (__webpack_require__("./src/scriptB.js")))
> /******/ 	var __webpack_exports__ = __webpack_require__.O(undefined, ["vendors-node_modules_jquery_dist_jquery_js"], () => (__webpack_require__("./src/scriptC.js")))
> /******/ 	__webpack_exports__ = __webpack_require__.O(__webpack_exports__);
> /******/ 	var __webpack_export_target__ = self;
> /******/ 	for(var __webpack_i__ in __webpack_exports__) __webpack_export_target__[__webpack_i__] = __webpack_exports__[__webpack_i__];
> /******/ 	if(__webpack_exports__.__esModule) Object.defineProperty(__webpack_export_target__, "__esModule", { value: true });
> /******/

After

> /******/ 	// startup
> /******/ 	// Load entry module and return exports
> /******/ 	// This entry module depends on other loaded chunks and execution need to be delayed
> /******/ 	var __webpack_exports__ = __webpack_require__.O(undefined, ["vendors-node_modules_jquery_dist_jquery_js"], () => (__webpack_require__("./src/index.js")))
> /******/ 	__webpack_exports__ = Object.assign({...__webpack_exports__},{...__webpack_require__.O(__webpack_exports__)});
> /******/ 	__webpack_require__.O(undefined, ["vendors-node_modules_jquery_dist_jquery_js"], () => (__webpack_require__("./src/scriptB.js")))
> /******/ 	__webpack_exports__ = Object.assign({...__webpack_exports__},{...__webpack_require__.O(__webpack_exports__)});
> /******/ 	__webpack_require__.O(undefined, ["vendors-node_modules_jquery_dist_jquery_js"], () => (__webpack_require__("./src/scriptC.js")))
> /******/ 	__webpack_exports__ = Object.assign({...__webpack_exports__},{...__webpack_require__.O(__webpack_exports__)});
> /******/ 	__webpack_exports__ = __webpack_require__.O(__webpack_exports__);
> /******/ 	var __webpack_export_target__ = self;
> /******/ 	for(var __webpack_i__ in __webpack_exports__) __webpack_export_target__[__webpack_i__] = __webpack_exports__[__webpack_i__];
> /******/ 	if(__webpack_exports__.__esModule) Object.defineProperty(__webpack_export_target__, "__esModule", { value: true });
> /******/

3) When there are Inline entry modules

In this case , i avoid writing the exports variable inside iife for inline entry modules, this way all the entry modules use the global exports variable and thus exports from all extry points would be available.

Did you add tests for your changes?
yes i have added tests

Does this PR introduce a breaking change?
No Breaking Change

If relevant, what needs to be documented once your changes are merged or what have you already documented?
Since exports from all the entry points will be available, we have to update the document in places where it says only exports
from last entry point will be available like here.

Use of AI

I have never used AI for this PR, it took me literally a week to understand and come to this solution.

changeset-bot · 2026-03-13T05:42:20Z

⚠️ No Changeset found

Latest commit: 64a2641

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linux-foundation-easycla · 2026-03-13T05:42:23Z

The committers listed above are authorized under a signed CLA.

✅ login: kb019 / name: Bhargav kodali (64a2641)

alexander-akait

This is wrong solution and the issue about libraries

kb019 · 2026-03-13T12:22:44Z

Ho @alexander-akait , could you please guide me in right direction on how to solve this issue.

support-export-from-entries

64a2641

alexander-akait requested changes Mar 13, 2026

View reviewed changes

alexander-akait closed this Mar 13, 2026

kb019 deleted the issues/15936 branch March 14, 2026 03:24

webdevelopersrinu mentioned this pull request Aug 10, 2026

fix: expose exports of all entry modules in library output #21662

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fix: export in library works only for last entry module - #20638

fix: export in library works only for last entry module#20638
kb019 wants to merge 1 commit into
webpack:mainfrom
kb019:issues/15936

kb019 commented Mar 13, 2026 •

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kb019 commented Mar 13, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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1) when entry points is refrenced by other modules

2) When entry points depend on other chunks

3) When there are Inline entry modules

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kb019 commented Mar 13, 2026 •

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