refactor(accordion): enforce stricter types for inputs

BREAKING CHANGE: The `disabled` and `expanded` properties in the `AccordionItem` are now strict to `boolean`.

Author: rafaelss95

src/cdk/accordion/accordion-item.ts

@@ -60,8 +60,8 @@ export class CdkAccordionItem implements OnDestroy {
 
   /** Whether the AccordionItem is expanded. */
   @Input()
-  get expanded(): any { return this._expanded; }
-  set expanded(expanded: any) {
+  get expanded(): boolean { return this._expanded; }
+  set expanded(expanded: boolean) {
     expanded = coerceBooleanProperty(expanded);
 
     // Only emit events and update the internal value if the value changes.
@@ -90,9 +90,9 @@ export class CdkAccordionItem implements OnDestroy {
 
   /** Whether the AccordionItem is disabled. */
   @Input()
-  get disabled() { return this._disabled; }
-  set disabled(disabled: any) { this._disabled = coerceBooleanProperty(disabled); }
-  private _disabled: boolean = false;
+  get disabled(): boolean { return this._disabled; }
+  set disabled(disabled: boolean) { this._disabled = coerceBooleanProperty(disabled); }
+  private _disabled = false;
 
   /** Unregister function for _expansionDispatcher. */
   private _removeUniqueSelectionListener: () => void = () => {};

src/material/expansion/expansion-panel-header.ts

@@ -116,7 +116,7 @@ export class MatExpansionPanelHeader implements AfterViewInit, OnDestroy, Focusa
    * Whether the associated panel is disabled. Implemented as a part of `FocusableOption`.
    * @docs-private
    */
-  get disabled() {
+  get disabled(): boolean {
     return this.panel.disabled;
   }
 

src/material/expansion/expansion-panel.ts

@@ -242,8 +242,6 @@ export class MatExpansionPanel extends CdkAccordionItem implements AfterContentI
   }
 
   static ngAcceptInputType_hideToggle: BooleanInput;
-  static ngAcceptInputType_expanded: BooleanInput;
-  static ngAcceptInputType_disabled: BooleanInput;
 }
 
 @Directive({

tools/public_api_guard/cdk/accordion.d.ts

@@ -18,10 +18,10 @@ export declare class CdkAccordionItem implements OnDestroy {
     accordion: CdkAccordion;
     closed: EventEmitter<void>;
     destroyed: EventEmitter<void>;
-    get disabled(): any;
-    set disabled(disabled: any);
-    get expanded(): any;
-    set expanded(expanded: any);
+    get disabled(): boolean;
+    set disabled(disabled: boolean);
+    get expanded(): boolean;
+    set expanded(expanded: boolean);
     expandedChange: EventEmitter<boolean>;
     readonly id: string;
     opened: EventEmitter<void>;

tools/public_api_guard/material/expansion.d.ts

@@ -65,8 +65,6 @@ export declare class MatExpansionPanel extends CdkAccordionItem implements After
     ngOnDestroy(): void;
     open(): void;
     toggle(): void;
-    static ngAcceptInputType_disabled: BooleanInput;
-    static ngAcceptInputType_expanded: BooleanInput;
     static ngAcceptInputType_hideToggle: BooleanInput;
     static ɵcmp: i0.ɵɵComponentDefWithMeta<MatExpansionPanel, "mat-expansion-panel", ["matExpansionPanel"], { "disabled": "disabled"; "expanded": "expanded"; "hideToggle": "hideToggle"; "togglePosition": "togglePosition"; }, { "opened": "opened"; "closed": "closed"; "expandedChange": "expandedChange"; "afterExpand": "afterExpand"; "afterCollapse": "afterCollapse"; }, ["_lazyContent"], ["mat-expansion-panel-header", "*", "mat-action-row"]>;
     static ɵfac: i0.ɵɵFactoryDef<MatExpansionPanel, [{ optional: true; skipSelf: true; }, null, null, null, null, { optional: true; }, { optional: true; }]>;
@@ -98,7 +96,7 @@ export declare class MatExpansionPanelDescription {
 export declare class MatExpansionPanelHeader implements AfterViewInit, OnDestroy, FocusableOption {
     _animationMode?: string | undefined;
     collapsedHeight: string;
-    get disabled(): any;
+    get disabled(): boolean;
     expandedHeight: string;
     panel: MatExpansionPanel;
     constructor(panel: MatExpansionPanel, _element: ElementRef, _focusMonitor: FocusMonitor, _changeDetectorRef: ChangeDetectorRef, defaultOptions?: MatExpansionPanelDefaultOptions, _animationMode?: string | undefined);