express-rate-limit
diff --git a/‎source/memory-store.ts‎
Lines changed: 1 addition & 4 deletions b/‎source/memory-store.ts‎
Lines changed: 1 addition & 4 deletions
diff --git a/‎test/library/memory-store-test.ts‎
Lines changed: 2 additions & 1 deletion b/‎test/library/memory-store-test.ts‎
Lines changed: 2 additions & 1 deletion
@@ -129,9 +129,6 @@ export default class MemoryStore implements Store {
 	 * @public
 	 */
 	shutdown(): void {
-		if (this.interval !== undefined) {
-			clearInterval(this.interval)
-			this.interval = undefined
-		}
+		clearInterval(this.interval)
 	}
 }
@@ -9,6 +9,7 @@ import MemoryStore from '../../source/memory-store.js'
 describe('memory store test', () => {
 	beforeEach(() => {
 		jest.useFakeTimers()
+		jest.spyOn(global, 'clearInterval')
 	})
 	afterEach(() => {
 		jest.useRealTimers()
@@ -81,7 +82,7 @@ describe('memory store test', () => {
 		store.init({ windowMs: -1 } as Options)
 		expect(store.interval).toBeDefined()
 		store.shutdown()
-		expect(store.interval).toBeUndefined()
+		expect(clearInterval).toHaveBeenCalledWith(store.interval)
 	})
 
 	describe('reset time', () => {
Original file line number	Diff line number	Diff line change
`@@ -129,9 +129,6 @@ export default class MemoryStore implements Store {`
`129`	`129`	`* @public`
`130`	`130`	`*/`
`131`	`131`	`shutdown(): void {`
`132`		`- if (this.interval !== undefined) {`
`133`		`- clearInterval(this.interval)`
`134`		`- this.interval = undefined`
`135`		`- }`
	`132`	`+ clearInterval(this.interval)`
`136`	`133`	`}`
`137`	`134`	`}`