Backoffice Performance: Inline entry point modules to reduce JS chunk count

[madsrasmussen]

Updated all backoffice entry point manifest registrations to use static imports instead of dynamic imports. This prevents Vite from creating separate chunk files for each entry point module.

To allow this to happen, the PR opens up for an additional type to be passed to the js property in the manifest. The most critical updates are in:

• src/Umbraco.Web.UI.Client/src/libs/extension-api/functions/load-manifest-plain-js.function.ts
• src/Umbraco.Web.UI.Client/src/libs/extension-api/types/utils.ts

Changes

Changed the pattern for registering backofficeEntryPoint manifests from:

{
    type: 'backofficeEntryPoint',
    js: () => import('./entry-point.js'),
}

To:

import * as entryPointModule from './entry-point.js';

{
    type: 'backofficeEntryPoint',
    js: entryPointModule,
}

Impact

• JS requests reduced from 520 to 491 (29 fewer network requests)

[Copilot]

Pull request overview

This PR optimizes the Umbraco backoffice's JavaScript bundle strategy by converting dynamic imports to static imports for all backofficeEntryPoint manifest registrations. This prevents Vite from creating separate chunk files for each entry point module, reducing the number of JS network requests from 520 to 491 (29 fewer requests).

Changes:

• Modified JsLoaderProperty type to accept either a string, a loader promise function, or a directly imported module object
• Updated loadManifestPlainJs function to handle statically imported modules alongside the existing dynamic import patterns
• Converted 23 backoffice entry point manifest files from dynamic imports (js: () => import('./entry-point.js')) to static imports (js: entryPointModule)

Reviewed changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/Umbraco.Web.UI.Client/src/libs/extension-api/types/utils.ts	Extended JsLoaderProperty type to accept module objects in addition to strings and promise functions
src/Umbraco.Web.UI.Client/src/libs/extension-api/functions/load-manifest-plain-js.function.ts	Added handling for statically imported module objects in the loader function
src/Umbraco.Web.UI.Client/src/packages/webhook/manifests.ts	Converted webhook entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/user/user/manifests.ts	Converted user entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/user/user-group/manifests.ts	Converted user group entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/templating/umbraco-package.ts	Converted templating entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/templating/templates/manifests.ts	Converted templates entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/manifests.ts	Converted stylesheets entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/templating/scripts/manifests.ts	Converted scripts entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/templating/partial-views/manifests.ts	Converted partial views entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/static-file/manifests.ts	Converted static file entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/property-editors/umbraco-package.ts	Converted property editors entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/members/member/manifests.ts	Converted member entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/members/member-type/manifests.ts	Converted member type entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/members/member-group/manifests.ts	Converted member group entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/media/umbraco-package.ts	Converted media management entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/media/media/manifests.ts	Converted media entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/media/media-types/manifests.ts	Converted media types entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/language/manifests.ts	Converted language entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/documents/documents/manifests.ts	Converted documents entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/documents/document-types/manifests.ts	Converted document types entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/documents/document-blueprints/manifests.ts	Converted document blueprints entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/dictionary/manifests.ts	Converted dictionary entry point from dynamic to static import
src/Umbraco.Web.UI.Client/src/packages/data-type/manifests.ts	Converted data type entry point from dynamic to static import

[nielslyngsoe]

Looks really good, and really happy to get this new declaration option as well as