diff --git a/javascript-firestore-auth-crash-course/package-lock.json b/javascript-firestore-auth-crash-course/package-lock.json
index 74f30170..eb31e003 100644
--- a/javascript-firestore-auth-crash-course/package-lock.json
+++ b/javascript-firestore-auth-crash-course/package-lock.json
@@ -61,7 +61,6 @@
       "integrity": "sha512-e7jT4DxYvIDLk1ZHmU/m/mB19rex9sv0c2ftBtjSBv+kVM/902eh0fINUzD7UwLLNR+jU585GxUJ8/EBfAM5fw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
         "@babel/generator": "^7.28.5",
@@ -844,7 +843,6 @@
       "version": "0.7.20",
       "resolved": "https://registry.npmjs.org/@firebase/app/-/app-0.7.20.tgz",
       "integrity": "sha512-tTVrEYCbEKBcMp/bj5rUa35iM32W5z9l3jbLAqDh0ZM2yO4JvF08a3hHacZ32XDh9Av/yCgla0QmVPp/Z2klNg==",
-      "peer": true,
       "dependencies": {
         "@firebase/component": "0.5.12",
         "@firebase/logger": "0.3.2",
@@ -896,7 +894,6 @@
       "version": "0.1.21",
       "resolved": "https://registry.npmjs.org/@firebase/app-compat/-/app-compat-0.1.21.tgz",
       "integrity": "sha512-zKRjOt6JXZ6gBdl3ELdjvEQ7cdrsrCjLEaLttBxioqW9VxXZfBOgP38uUb0baJk2XNEUA6YWM+H/bg1y+FGFYA==",
-      "peer": true,
       "dependencies": {
         "@firebase/app": "0.7.20",
         "@firebase/component": "0.5.12",
@@ -908,8 +905,7 @@
     "node_modules/@firebase/app-types": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/@firebase/app-types/-/app-types-0.7.0.tgz",
-      "integrity": "sha512-6fbHQwDv2jp/v6bXhBw2eSRbNBpxHcd1NBF864UksSMVIqIyri9qpJB1Mn6sGZE+bnDsSQBC5j2TbMxYsJQkQg==",
-      "peer": true
+      "integrity": "sha512-6fbHQwDv2jp/v6bXhBw2eSRbNBpxHcd1NBF864UksSMVIqIyri9qpJB1Mn6sGZE+bnDsSQBC5j2TbMxYsJQkQg=="
     },
     "node_modules/@firebase/auth": {
       "version": "0.19.11",
@@ -1270,7 +1266,6 @@
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/@firebase/util/-/util-1.5.1.tgz",
       "integrity": "sha512-ojwPg8sKVcoU/kC1QdTrD+eUDyjQkZyiH9tlouXeZdAeDddCYNvHgIeBQhZt62WIcjlNhy1zro/xdV5nUUU38A==",
-      "peer": true,
       "dependencies": {
         "tslib": "^2.1.0"
       }
@@ -2014,7 +2009,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.8.25",
         "caniuse-lite": "^1.0.30001754",
@@ -2394,6 +2388,29 @@
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
       "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A=="
     },
+    "node_modules/encoding": {
+      "version": "0.1.13",
+      "resolved": "https://registry.npmjs.org/encoding/-/encoding-0.1.13.tgz",
+      "integrity": "sha512-ETBauow1T35Y/WZMkio9jiM0Z5xjHHmJ4XmjZOq1l/dXz3lr2sRn87nJy20RupqSh1F2m3HHPSp8ShIPQJrJ3A==",
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "iconv-lite": "^0.6.2"
+      }
+    },
+    "node_modules/encoding/node_modules/iconv-lite": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "safer-buffer": ">= 2.1.2 < 3.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/end-of-stream": {
       "version": "1.4.4",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
@@ -6897,7 +6914,6 @@
       "resolved": "https://registry.npmjs.org/marked/-/marked-4.0.10.tgz",
       "integrity": "sha512-+QvuFj0nGgO970fySghXGmuw+Fd0gD2x3+MqCWLIPf5oxdv1Ka6b2q+z9RP01P/IaKPMEramy+7cNy/Lw8c3hw==",
       "dev": true,
-      "peer": true,
       "bin": {
         "marked": "bin/marked.js"
       },
@@ -10365,9 +10381,9 @@
       "license": "ISC"
     },
     "node_modules/picomatch": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
-      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.2.tgz",
+      "integrity": "sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -10410,7 +10426,6 @@
       "version": "10.7.0",
       "resolved": "https://registry.npmjs.org/preact/-/preact-10.7.0.tgz",
       "integrity": "sha512-9MEURwzNMKpAil/t6+wabDIJI6oG6GnwypYxiJDvQnW+fHDTt51PYuLZ1QUM31hFr7sDaj9qTaShAF9VIxuxGQ==",
-      "peer": true,
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/preact"
@@ -10623,7 +10638,7 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
-      "dev": true
+      "devOptional": true
     },
     "node_modules/selenium-webdriver": {
       "version": "4.0.0-rc-1",
@@ -10800,12 +10815,11 @@
       }
     },
     "node_modules/tinyglobby/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -10931,7 +10945,6 @@
       "integrity": "sha512-tI2l/nFHC5rLh7+5+o7QjKjSR04ivXDF4jcgV0f/bTQ+OJiITy5S6gaynVsEM+7RqzufMnVbIon6Sr5x1SDYaQ==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "esbuild": "^0.25.0",
         "fdir": "^6.5.0",
@@ -11038,12 +11051,11 @@
       }
     },
     "node_modules/vite/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },