fix: import ionic utilities

[NgLoader]

Problem

The runtime imports (createAnimation, createGesture, the lifecycle constants) come from the @ionic/core root, which is Ionic's lazy-loader build. Apps that use the custom elements build (Ionic 9 Angular, Ionic 8 standalone, React, Vue) then also bundle Stencil's lazy loader. Its import(`./${bundleId}.entry.js`) makes esbuild emit every Ionic component as an extra chunk that is never loaded, and the app gets a second copy of Ionic's shared code. esbuild also warns: The glob pattern import("./**/*.entry.js*") did not match any files.

Measured in an Angular 22 + Ionic 9 app (esbuild) with ionic-theme-ios26 9.4.0, ionic-theme-md3 9.1.1 and ionic-theme-utils 0.1.1:

	JS files	JS total	Initial (raw / gzip)
Root imports	210	4.8 MB	1.01 MB / 275 kB
@ionic/core/components	119	3.7 MB	938 kB / 253 kB

Changes

• src/: all imports from @ionic/core now use @ionic/core/components. It exports the same functions, and custom-elements.d.ts re-exports all types. Ionic 9's own @ionic/angular imports the root only in its lazy variant.
• rdlabo-check-esm fails when a published .js file imports the @ionic/core root, so themes that run test:esm catch a regression in CI. There is a new case in check-esm.test.mjs.

Trade-off

Apps that still use the lazy-loader build get a small duplicate of these utilities instead.

[NgLoader]

md3 and ios27 have the same root imports.
I have the fixes ready and can open PRs for both if this approach works for you.

[rdlabo]

Sorry, I completely missed this PR! This is an excellent contribution—thank you for investigating the bundle-size impact and putting this together. I really like this approach.

I verified that the checks pass with Ionic 9. However, with Ionic 8.8.1, which we still support, test:esm fails with ERR_UNSUPPORTED_DIR_IMPORT for @ionic/core/components. Ionic 9 maps this subpath through its package exports, but Ionic 8.8.1 does not. Changing the runtime imports to @ionic/core/components/index.js fixes it locally. Could you update those imports to preserve Ionic 8 compatibility?

[NgLoader]

Hey,
sorry, I totally missed the Ionic 8 support.
It should be fixed now.

The runtime imports use @ionic/core/components/index.js, and I added a check for it.

[rdlabo]

Thanks for the quick update! I’ll merge this now and review your PRs in the other repositories next. Really appreciate your contribution!

[github-actions]

npm beta published

CI passed for the merge commit bf561e7dd38b. Install the immutable version with:

npm install @rdlabo/ionic-theme-utils@0.1.2-beta.pr6.shabf561e7dd38b