Tree-shaking via only / except configuration is broken in v4

[jelhan]

The tree-shaking via only and except configuration options does not seem to work anymore in 4.0.0. I think it was dropped when converting the addon to v2 in #945.

I assume this was done by accident as the feature is still documented:

ember-math-helpers/docs/docs/configuration.md

Lines 1 to 19 in f7c0446

	## Configuration
	If you don't need all the helpers, you can specify which to whitelist or blacklist using `only` or `except` within your `ember-cli-build.js`:
	```js
	module.exports = function(defaults) {
	var app = new EmberApp(defaults, {
	'ember-math-helpers': {
	only: ['add', 'sub'],
	except: ['random', 'tan']
	}
	});
	```
	Both `only` and `except` can be safely used together (the addon computes the diff), although it's best if you only use one for your own sanity.
	```js
	except: ['random'] // imports all helpers except `random`
	only: ['random'] // imports only `random`
	```

This breaking change is also not listed in the changelog:

ember-math-helpers/CHANGELOG.md

Lines 6 to 24 in f7c0446

	## v4.0.0 (2023-11-02)
	#### :boom: Breaking Change
	* [#965](https://github.com/RobbieTheWagner/ember-math-helpers/pull/965) Support Ember 5, drop Ember 3.x support ([@RobbieTheWagner](https://github.com/RobbieTheWagner))
	#### :rocket: Enhancement
	* [#1163](https://github.com/RobbieTheWagner/ember-math-helpers/pull/1163) Add full TS/glint support ([@RobbieTheWagner](https://github.com/RobbieTheWagner))
	* [#1162](https://github.com/RobbieTheWagner/ember-math-helpers/pull/1162) Type declarations and template registry for Glint ([@BoussonKarel](https://github.com/BoussonKarel))
	#### :memo: Documentation
	* [#951](https://github.com/RobbieTheWagner/ember-math-helpers/pull/951) Fix broken URLs ([@ursm](https://github.com/ursm))
	#### :house: Internal
	* [#1100](https://github.com/RobbieTheWagner/ember-math-helpers/pull/1100) Fix build ([@RobbieTheWagner](https://github.com/RobbieTheWagner))
	#### Committers: 3
	- Keita Urashima ([@ursm](https://github.com/ursm))
	- Robbie Wagner ([@RobbieTheWagner](https://github.com/RobbieTheWagner))
	- [@BoussonKarel](https://github.com/BoussonKarel)

I noticed this when investigating if we can convert Ember Bootstrap to a v2 addon without dropping support for tree-shaking through configuration.

[RobbieTheWagner]

@jelhan you are correct that support was dropped for it. I believe tree shaking should be automatic with embroider and only use the things you import, but I could be wrong.

[jelhan]

I believe tree shaking should be automatic with embroider and only use the things you import, but I could be wrong.

That's only true if consuming app uses Embroider and opted in to { staticHelpers: true } as far as I know.

[RobbieTheWagner]

I believe tree shaking should be automatic with embroider and only use the things you import, but I could be wrong.

That's only true if consuming app uses Embroider and opted in to { staticHelpers: true } as far as I know.

That's possible, but that is the future, so I don't know if we need configs for this anymore in this addon.

[jelhan]

I don't know if we need configs for this anymore in this addon.

I think it's a maintainer decision. I see two options:

1. Document the breaking change in the changelog and update the docs. Or
2. Rollback the v2 addon conversion and restore the functionality as a bug fix.

A third one would be restoring the functionality for apps not using Embroider. This is discussed here: embroider-build/embroider#1748 (comment) It would be still a breaking change introduced in v4 but affecting a smaller subset of apps using this addon.

[RobbieTheWagner]

I think documenting the breaking change is probably the best way to go here.