diff --git a/TypeScript/package-lock.json b/TypeScript/package-lock.json
index 45d2927..c6e247b 100644
--- a/TypeScript/package-lock.json
+++ b/TypeScript/package-lock.json
@@ -1425,9 +1425,9 @@
       }
     },
     "node_modules/ansi-regex": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-      "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
       "dev": true,
       "engines": {
         "node": ">=8"
@@ -4907,9 +4907,9 @@
       }
     },
     "node_modules/minimist": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-      "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz",
+      "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==",
       "dev": true
     },
     "node_modules/ms": {
@@ -7872,9 +7872,9 @@
       }
     },
     "ansi-regex": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-      "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
       "dev": true
     },
     "ansi-styles": {
@@ -10466,9 +10466,9 @@
       }
     },
     "minimist": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-      "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz",
+      "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==",
       "dev": true
     },
     "ms": {
diff --git a/TypeScript/tests/queue.test.ts b/TypeScript/tests/queue.test.ts
index 4fe6b5e..27418b8 100644
--- a/TypeScript/tests/queue.test.ts
+++ b/TypeScript/tests/queue.test.ts
@@ -1,3 +1,4 @@
+import exp from "constants";
 import { newArrayIntQueue } from "../src/arrayqueue";
 import { newLinkedListIntQueue } from "../src/linkedlistqueue.js";
 
@@ -7,6 +8,13 @@ let createQueue = newLinkedListIntQueue
 
 // TODOs:
 // write more test cases to test dequeue and clear functions.
+test("test deQueue: the newly created queue should be length 1", () =>{
+    const queue = createQueue()
+    queue.enqueue(1)
+    queue.enqueue(2)
+    queue.dequeue()
+    expect(queue.peek()).toEqual(2)
+})
 
 test("test isEmpty: newly created list should be empty", () => {
     expect(createQueue().isEmpty()).toBeTruthy()