Merge pull request #128 from github/types-ts-add-window-declarations

Add TS window declaration for Time Elements

Author: keithamus

index.d.ts

@@ -19,3 +19,12 @@ export class TimeAgoElement extends ExtendedTimeElement {
 export class TimeUntilElement extends ExtendedTimeElement {
   getFormattedDate(): string | undefined
 }
+
+declare global {
+  interface Window {
+    LocalTimeElement: typeof LocalTimeElement;
+    RelativeTimeElement: typeof RelativeTimeElement;
+    TimeAgoElement: typeof TimeAgoElement;
+    TimeUntilElement: typeof TimeUntilElement;
+  }
+}