82d6309ef1
Issue number: resolves #28358
---------
<!-- Please do not submit updates to dependencies unless it fixes an
issue. -->
<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->
## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->
28f2ec9c62
exposed a (possible) `ng-packagr` bug where the form control components
were being re-assigned, which breaks treeshaking. These components were
considered side effects and were always being pulled into the bundle.
This resulted in a higher than expected bundle size. This issue appears
to be caused by using 2 decorators **and** referring to the class in
`useExisting` (for providers). Doing just one of these does not
reproduce the issue.
The compiled output looks something like this:
```typescript
let IonToggle = IonToggle_1 = /*@__PURE__*/ class IonToggle extends ValueAccessor {
constructor(c, r, z, injector) {
super(injector, r);
this.z = z;
c.detach();
this.el = r.nativeElement;
proxyOutputs(this, this.el, ['ionChange', 'ionFocus', 'ionBlur']);
}
writeValue(value) {
this.elementRef.nativeElement.checked = this.lastValue = value;
setIonicClasses(this.elementRef);
}
handleIonChange(el) {
this.handleValueChange(el, el.checked);
}
};
/** @nocollapse */ IonToggle.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.12", ngImport: i0, type: IonToggle, deps: [{ token: i0.ChangeDetectorRef }, { token: i0.ElementRef }, { token: i0.NgZone }, { token: i0.Injector }], target: i0.ɵɵFactoryTarget.Component });
/** @nocollapse */ IonToggle.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.2.12", type: IonToggle, isStandalone: true, selector: "ion-toggle", inputs: { checked: "checked", color: "color", disabled: "disabled", enableOnOffLabels: "enableOnOffLabels", justify: "justify", labelPlacement: "labelPlacement", legacy: "legacy", mode: "mode", name: "name", value: "value" }, host: { listeners: { "ionChange": "handleIonChange($event.target)" } }, providers: [
{
provide: NG_VALUE_ACCESSOR,
useExisting: IonToggle_1,
multi: true,
},
], usesInheritance: true, ngImport: i0, template: '<ng-content></ng-content>', isInline: true, changeDetection: i0.ChangeDetectionStrategy.OnPush });
IonToggle = IonToggle_1 = __decorate([
ProxyCmp({
defineCustomElementFn: defineCustomElement$1i,
inputs: TOGGLE_INPUTS,
})
], IonToggle);
```
## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->
- Removed the `ProxyCmp` usage in favor of manually calling proxyInputs
and proxyMethods.
- Also saw that select was missing a form control test, so I added one
The compiled code now looks something like this:
```typescript
class IonToggle extends ValueAccessor {
constructor(c, r, z, injector) {
super(injector, r);
this.z = z;
defineCustomElement$1i();
proxyInputs(IonToggle, TOGGLE_INPUTS);
c.detach();
this.el = r.nativeElement;
proxyOutputs(this, this.el, ['ionChange', 'ionFocus', 'ionBlur']);
}
writeValue(value) {
this.elementRef.nativeElement.checked = this.lastValue = value;
setIonicClasses(this.elementRef);
}
handleIonChange(el) {
this.handleValueChange(el, el.checked);
}
}
/** @nocollapse */ IonToggle.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.12", ngImport: i0, type: IonToggle, deps: [{ token: i0.ChangeDetectorRef }, { token: i0.ElementRef }, { token: i0.NgZone }, { token: i0.Injector }], target: i0.ɵɵFactoryTarget.Component });
/** @nocollapse */ IonToggle.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.2.12", type: IonToggle, isStandalone: true, selector: "ion-toggle", inputs: { checked: "checked", color: "color", disabled: "disabled", enableOnOffLabels: "enableOnOffLabels", justify: "justify", labelPlacement: "labelPlacement", legacy: "legacy", mode: "mode", name: "name", value: "value" }, host: { listeners: { "ionChange": "handleIonChange($event.target)" } }, providers: [
{
provide: NG_VALUE_ACCESSOR,
useExisting: IonToggle,
multi: true,
},
], usesInheritance: true, ngImport: i0, template: '<ng-content></ng-content>', isInline: true, changeDetection: i0.ChangeDetectionStrategy.OnPush });
```
## Does this introduce a breaking change?
- [ ] Yes
- [x] No
<!-- If this introduces a breaking change, please describe the impact
and migration path for existing applications below. -->
## Other information
<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->
Ryan provided some context on a related Stencil bug where doing
reassignments broke treeshaking in Webpack. While the source of this bug
is not Stencil, understanding the Stencil bug helped me better
understand this issue:
https://github.com/ionic-team/stencil/issues/3191
https://github.com/ionic-team/stencil/pull/3248
https://github.com/ionic-team/stencil/pull/4188 (fixes an issue
introduced in the above stencil PR)
Dev build: `7.5.1-dev.11697480817.10fa2601`
Ionic
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