Support Customization of new application builder

[luca-peruzzo]

As with other builders, Angular exposed the new application builder function.
import { buildApplication } from "@angular-devkit/build-angular";
it is a complete replacement for the browser and server builder and compiles everything with esbuild.
Are you going to integrate this builder allowing customisation?

[just-jeb]

@arturovt is working on supporting ESBuilder, I assume application builder is one of the goals.

[mattdsteele]

Really excited for this! I opened a ticket in the Angular repo which just got an update to also support custom middleware.

@arturovt were you planning to support custom middleware in your PR? If not, I could potentially extend on your foundation.

[just-jeb]

@mattdsteele I'm not sure what's the status of @arturovt PR but I think you can go ahead and create another PR based on his (after we merge his PR you'll have to rebase).

[just-jeb]

Actually, @mattdsteele, I see that @arturovt already added custom middlewares.

[muuvmuuv]

@arturovt can you also add the ability to manipulate the indexHtml, they merged that feature in main already? Since there is no release tag yet maybe something for another angular-builders release.

• PR: refactor(@angular-devkit/build-angular): add index HTML transformer to application programmatic usage angular/angular-cli#26667
• Issue: Expose postTransform to all builder APIs to allow index html manipulation angular/angular-cli#26299

[arturovt]

Yeah I’ll take a look