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										 |  |  | /** | 
					
						
							|  |  |  |  * @license | 
					
						
							| 
									
										
										
										
											2020-05-19 12:08:49 -07:00
										 |  |  |  * Copyright Google LLC All Rights Reserved. | 
					
						
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											2018-02-16 08:45:21 -08:00
										 |  |  |  * | 
					
						
							|  |  |  |  * Use of this source code is governed by an MIT-style license that can be | 
					
						
							|  |  |  |  * found in the LICENSE file at https://angular.io/license
 | 
					
						
							|  |  |  |  */ | 
					
						
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												refactor(compiler): move factory out of injector definition (#41022)
Previously, injector definitions contained a `factory` property that
was used to create a new instance of the associated NgModule class.
Now this factory has been moved to its own `ɵfac` static property on the
NgModule class itself. This is inline with how directives, components and
pipes are created.
There is a small size increase to bundle sizes for each NgModule class,
because the `ɵfac` takes up a bit more space:
Before:
```js
let a = (() => {
  class n {}
  return n.\u0275mod = c.Cb({type: n}),
  n.\u0275inj = c.Bb({factory: function(t) { return new (t || n) }, imports: [[e.a.forChild(s)], e.a]}),
  n
})(),
```
After:
```js
let a = (() => {
  class n {}
  return n.\u0275fac = function(t) { return new (t || n) },
  n.\u0275mod = c.Cb({type: n}),
  n.\u0275inj = c.Bb({imports: [[r.a.forChild(s)], r.a]}),
  n
})(),
```
In other words `n.\u0275fac = ` is longer than `factory: ` (by 5 characters)
and only because the tooling insists on encoding `ɵ` as `\u0275`.
This can be mitigated in a future PR by only generating the `ɵfac` property
if it is actually needed.
PR Close #41022
											
										 
											2021-02-26 19:21:29 +00:00
										 |  |  | import {ɵcreateInjector as createInjector, ɵɵdefineInjectable, ɵɵdefineInjector} from '@angular/core'; | 
					
						
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										 |  |  | 
 | 
					
						
							|  |  |  | export class RootService { | 
					
						
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										 |  |  |   static ɵprov = ɵɵdefineInjectable({ | 
					
						
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										 |  |  |     token: RootService, | 
					
						
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										 |  |  |     providedIn: 'root', | 
					
						
							|  |  |  |     factory: () => new RootService(), | 
					
						
							|  |  |  |   }); | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | export class ScopedService { | 
					
						
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										 |  |  |   static ɵprov = ɵɵdefineInjectable({ | 
					
						
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										 |  |  |     token: ScopedService, | 
					
						
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										 |  |  |     providedIn: null, | 
					
						
							|  |  |  |     factory: () => new ScopedService(), | 
					
						
							|  |  |  |   }); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  |   doSomething(): void { | 
					
						
							|  |  |  |     // tslint:disable-next-line:no-console
 | 
					
						
							|  |  |  |     console.log('Ensure this isn\'t tree-shaken.'); | 
					
						
							|  |  |  |   } | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | export class DefinedInjector { | 
					
						
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										 |  |  |   static ɵinj = ɵɵdefineInjector({ | 
					
						
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										 |  |  |     providers: [ScopedService], | 
					
						
							|  |  |  |   }); | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | export const INJECTOR = createInjector(DefinedInjector); |