Added window interface and tests to requestidlecallback: Part 2 (#38124)

* added tests and updated requestidlecallback type

* added tests and updated requestidlecallback type

* - corrected arguments according to feedback.

types/requestidlecallback/index.d.ts

@@ -1,6 +1,6 @@
 // Type definitions for requestidlecallback 0.1
 // Project: https://w3c.github.io/requestidlecallback/, https://github.com/afarkas/requestidlecallback
-// Definitions by: 贺师俊 <https://github.com/hax>
+// Definitions by: 贺师俊 <https://github.com/hax>, Vladimir Grenaderov <https://github.com/VladimirGrenaderov>, Max Boguslavskiy <https://github.com/maxbogus>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 export function requestIdleCallback(callback: IdleRequestCallback, options?: IdleRequestOptions): IdleCallbackHandle;
@@ -19,3 +19,8 @@ export interface IdleDeadline {
 export interface IdleRequestOptions {
 	timeout: number;
 }
+
+export interface Window {
+  requestIdleCallback(callback: IdleRequestCallback, options?: IdleRequestOptions): IdleCallbackHandle;
+  cancelIdleCallback(handle: number): void;
+}

types/requestidlecallback/requestidlecallback-tests.ts

@@ -0,0 +1,17 @@
+import {
+  requestIdleCallback,
+  cancelIdleCallback,
+  IdleRequestOptions,
+  IdleCallbackHandle,
+} from 'requestidlecallback';
+
+// Test requestIdleCallback with default param
+requestIdleCallback(() => '1');
+
+// Test requestIdleCallback with default param and optional param
+const option: IdleRequestOptions = { timeout: 2000 };
+requestIdleCallback(() => '2', option);
+
+// Test cancelIdleCallback with default param
+const handle: IdleCallbackHandle = 1;
+cancelIdleCallback(handle);

types/requestidlecallback/tsconfig.json

@@ -17,6 +17,7 @@
 		"forceConsistentCasingInFileNames": true
 	},
 	"files": [
-		"index.d.ts"
+        "index.d.ts",
+        "requestidlecallback-tests.ts"
 	]
 }