fix: correct typescript@^4.5.0 types

Author: calebdwilliams

Diff for: package-lock.json

@@ -75,6 +75,6 @@
     "standard-version": "^9.0.0",
     "tsc": "^1.20150623.0",
     "tslib": "^2.1.0",
-    "typescript": "^4.0.3"
+    "typescript": "^4.5.2"
   }
 }

Diff for: package.json

@@ -176,7 +176,7 @@ export class ElementInternals implements IElementInternals {
   /**
    * Sets the element's validity. The first argument is a partial ValidityState object
    * reflecting the changes to be made to the element's validity. If the element is invalid,
-   * the second argument sets the element's validition message.
+   * the second argument sets the element's validation message.
    *
    * If the field is valid and a message is specified, the method will throw a TypeError.
    */

Diff for: src/element-internals.ts

@@ -78,3 +78,9 @@ export interface ICustomElement extends HTMLElement {
 }
 
 export type LabelsList = NodeListOf<HTMLLabelElement> | [];
+
+declare global {
+  interface HTMLElement {
+    attachInternals(): IElementInternals;
+  }
+}