From f05999730a8d7ab8826ccb6ced89586a6327c256 Mon Sep 17 00:00:00 2001
From: JoostK <joost.koehoorn@gmail.com>
Date: Fri, 11 Oct 2019 22:20:36 +0200
Subject: [PATCH] build(docs-infra): fix template type check errors (#33066)

In #33066 a limitation of Ivy's template type checker was fixed, where
all directive inputs would incorrectly allow `undefined` to be passed,
even when the input's type did not allow for it. Due to the fix, some
additional type errors were uncovered in AIO, where potential
`undefined` values would be passed to inputs that were not typed to
allow `undefined`.

PR Close #33066
---
 aio/src/app/custom-elements/code/code.component.ts | 10 +++++-----
 aio/src/app/layout/nav-item/nav-item.component.ts  |  2 +-
 aio/src/app/layout/nav-menu/nav-menu.component.ts  |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/aio/src/app/custom-elements/code/code.component.ts b/aio/src/app/custom-elements/code/code.component.ts
index 27246ab1d2..fe8b61118f 100644
--- a/aio/src/app/custom-elements/code/code.component.ts
+++ b/aio/src/app/custom-elements/code/code.component.ts
@@ -63,7 +63,7 @@ export class CodeComponent implements OnChanges {
   @Input() hideCopy: boolean;
 
   /** Language to render the code (e.g. javascript, dart, typescript). */
-  @Input() language: string;
+  @Input() language: string | undefined;
 
   /**
    * Whether to display line numbers:
@@ -71,7 +71,7 @@ export class CodeComponent implements OnChanges {
    *  - If true: show
    *  - If number: show but start at that number
    */
-  @Input() linenums: boolean | number | string;
+  @Input() linenums: boolean | number | string | undefined;
 
   /** Path to the source of the code. */
   @Input() path: string;
@@ -81,12 +81,12 @@ export class CodeComponent implements OnChanges {
 
   /** Optional header to be displayed above the code. */
   @Input()
-  set header(header: string) {
+  set header(header: string | undefined) {
     this._header = header;
     this.ariaLabel = this.header ? `Copy code snippet from ${this.header}` : '';
   }
-  get header(): string { return this._header; }
-  private _header: string;
+  get header(): string|undefined { return this._header; }
+  private _header: string | undefined;
 
   @Output() codeFormatted = new EventEmitter<void>();
 
diff --git a/aio/src/app/layout/nav-item/nav-item.component.ts b/aio/src/app/layout/nav-item/nav-item.component.ts
index a62612f834..eb9a26d5ba 100644
--- a/aio/src/app/layout/nav-item/nav-item.component.ts
+++ b/aio/src/app/layout/nav-item/nav-item.component.ts
@@ -10,7 +10,7 @@ export class NavItemComponent implements OnChanges {
   @Input() level = 1;
   @Input() node: NavigationNode;
   @Input() isParentExpanded = true;
-  @Input() selectedNodes: NavigationNode[];
+  @Input() selectedNodes: NavigationNode[] | undefined;
 
   isExpanded = false;
   isSelected = false;
diff --git a/aio/src/app/layout/nav-menu/nav-menu.component.ts b/aio/src/app/layout/nav-menu/nav-menu.component.ts
index 53194f6c96..b20c338a50 100644
--- a/aio/src/app/layout/nav-menu/nav-menu.component.ts
+++ b/aio/src/app/layout/nav-menu/nav-menu.component.ts
@@ -8,7 +8,7 @@ import { CurrentNode, NavigationNode } from 'app/navigation/navigation.service';
   </aio-nav-item>`
 })
 export class NavMenuComponent {
-  @Input() currentNode: CurrentNode;
+  @Input() currentNode: CurrentNode | undefined;
   @Input() isWide = false;
   @Input() nodes: NavigationNode[];
   get filteredNodes() { return this.nodes ? this.nodes.filter(n => !n.hidden) : []; }