Revert "refactor(core): Removed readonly getters and changed to readonly (#19225)"

This reverts commit 2b84b86fc0.

packages/core/src/linker/component_factory_resolver.ts

@@ -66,20 +66,13 @@ export class CodegenComponentFactoryResolver implements ComponentFactoryResolver
 }
 
 export class ComponentFactoryBoundToModule<C> extends ComponentFactory<C> {
-  readonly selector: string;
-  readonly componentType: Type<any>;
-  readonly ngContentSelectors: string[];
-  readonly inputs: {propName: string, templateName: string}[];
-  readonly outputs: {propName: string, templateName: string}[];
+  constructor(private factory: ComponentFactory<C>, private ngModule: NgModuleRef<any>) { super(); }
 
-  constructor(private factory: ComponentFactory<C>, private ngModule: NgModuleRef<any>) {
-    super();
-    this.selector = factory.selector;
-    this.componentType = factory.componentType;
-    this.ngContentSelectors = factory.ngContentSelectors;
-    this.inputs = factory.inputs;
-    this.outputs = factory.outputs;
-  }
+  get selector() { return this.factory.selector; }
+  get componentType() { return this.factory.componentType; }
+  get ngContentSelectors() { return this.factory.ngContentSelectors; }
+  get inputs() { return this.factory.inputs; }
+  get outputs() { return this.factory.outputs; }
 
   create(
       injector: Injector, projectableNodes?: any[][], rootSelectorOrNode?: string|any,

packages/core/src/linker/query_list.ts

@@ -41,9 +41,9 @@ export class QueryList<T>/* implements Iterable<T> */ {
   private _results: Array<T> = [];
   public readonly changes: Observable<any> = new EventEmitter();
 
-  readonly length: number;
-  readonly first: T;
-  readonly last: T;
+  get length(): number { return this._results.length; }
+  get first(): T { return this._results[0]; }
+  get last(): T { return this._results[this.length - 1]; }
 
   /**
    * See
@@ -98,9 +98,6 @@ export class QueryList<T>/* implements Iterable<T> */ {
   reset(res: Array<T|any[]>): void {
     this._results = flatten(res);
     (this as{dirty: boolean}).dirty = false;
-    (this as{length: number}).length = this._results.length;
-    (this as{last: T}).last = this._results[this.length - 1];
-    (this as{first: T}).first = this._results[0];
   }
 
   notifyOnChanges(): void { (this.changes as EventEmitter<any>).emit(this); }