docs: use TS Parameter properties in SkipSelf example (angular#40858)

AlexElin · josephperrott · commit e3c21c5465bc · 2021-02-16T09:24:25.000-08:00
PR Close angular#40858
diff --git a/packages/examples/core/di/ts/metadata_spec.ts b/packages/examples/core/di/ts/metadata_spec.ts
@@ -103,9 +103,7 @@ import {ComponentFixture, TestBed} from '@angular/core/testing';
 
         @Injectable()
         class NeedsDependency {
-          constructor(@SkipSelf() public dependency: Dependency) {
-            this.dependency = dependency;
-          }
+          constructor(@SkipSelf() public dependency: Dependency) {}
         }
 
         const parent = Injector.create({providers: [{provide: Dependency, deps: []}]});

Original file line number	Diff line number	Diff line change
`@@ -103,9 +103,7 @@ import {ComponentFixture, TestBed} from '@angular/core/testing';`
`103`	`103`
`104`	`104`	`@Injectable()`
`105`	`105`	`class NeedsDependency {`
`106`		`- constructor(@SkipSelf() public dependency: Dependency) {`
`107`		`- this.dependency = dependency;`
`108`		`- }`
	`106`	`+ constructor(@SkipSelf() public dependency: Dependency) {}`
`109`	`107`	`}`
`110`	`108`
`111`	`109`	`const parent = Injector.create({providers: [{provide: Dependency, deps: []}]});`