diff --git a/applying-css-classes-dynamically-ngClass/package-lock.json b/applying-css-classes-dynamically-ngClass/package-lock.json
index 0875b044..ea6c9e5a 100644
--- a/applying-css-classes-dynamically-ngClass/package-lock.json
+++ b/applying-css-classes-dynamically-ngClass/package-lock.json
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@@ -7700,6 +7718,13 @@
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-      "license": "MIT"
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@@ -12063,6 +12091,25 @@
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+      "dev": true,
+      "funding": [
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+          "url": "https://github.com/sponsors/ai"
+        }
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+      "bin": {
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diff --git a/applying-css-classes-dynamically-ngClass/package.json b/applying-css-classes-dynamically-ngClass/package.json
index 7cc13a7d..153d86ad 100644
--- a/applying-css-classes-dynamically-ngClass/package.json
+++ b/applying-css-classes-dynamically-ngClass/package.json
@@ -10,13 +10,13 @@
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diff --git a/basics-assignment-3-instructor-solution/package.json b/basics-assignment-3-instructor-solution/package.json
index df2f8e53..c1aaa176 100644
--- a/basics-assignment-3-instructor-solution/package.json
+++ b/basics-assignment-3-instructor-solution/package.json
@@ -13,15 +13,15 @@
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diff --git a/debugging/package-lock.json b/debugging/package-lock.json
index 2c5411ef..029995c1 100644
--- a/debugging/package-lock.json
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+      "funding": [
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@@ -1334,48 +1360,51 @@
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+      "resolved": "https://registry.npmjs.org/@angular/router/-/router-19.0.1.tgz",
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-        "@angular/core": "15.2.9",
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-        "commander": "^4.0.1",
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@@ -1390,7 +1419,7 @@
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-        "chokidar": "^3.4.0"
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@@ -1406,6 +1435,13 @@
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+      "license": "MIT"
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@@ -6011,10 +6047,11 @@
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+      "resolved": "https://registry.npmjs.org/commander/-/commander-6.2.1.tgz",
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+      "license": "MIT",
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@@ -6370,10 +6407,11 @@
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+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
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+      "license": "MIT",
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@@ -7204,6 +7242,13 @@
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+    "node_modules/express/node_modules/path-to-regexp": {
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+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.10.tgz",
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+      "license": "MIT"
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+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-5.0.9.tgz",
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@@ -10209,11 +10254,12 @@
           "url": "https://github.com/sponsors/ai"
         }
       ],
+      "license": "MIT",
       "bin": {
-        "nanoid": "bin/nanoid.cjs"
+        "nanoid": "bin/nanoid.js"
       },
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-        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+        "node": "^18 || >=20"
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@@ -11064,10 +11110,14 @@
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+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.2.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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@@ -11287,6 +11337,25 @@
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+    "node_modules/postcss/node_modules/nanoid": {
+      "version": "3.3.8",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz",
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+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
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@@ -14505,12 +14574,10 @@
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-      "dependencies": {
-        "tslib": "^2.3.0"
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+      "resolved": "https://registry.npmjs.org/zone.js/-/zone.js-0.15.0.tgz",
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+      "license": "MIT"
     }
   }
 }
diff --git a/debugging/package.json b/debugging/package.json
index 40829acf..72996df0 100644
--- a/debugging/package.json
+++ b/debugging/package.json
@@ -11,13 +11,13 @@
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     "@angular/animations": "^15.2.9",
-    "@angular/common": "^15.2.9",
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     "@angular/core": "^15.2.9",
     "@angular/forms": "^15.2.9",
     "@angular/platform-browser": "^15.2.9",
     "@angular/platform-browser-dynamic": "^15.2.9",
-    "@angular/router": "^15.2.9",
+    "@angular/router": "^19.0.1",
     "@babel/cli": "^7.22.9",
     "@babel/core": "^7.22.9",
     "@npmcli/fs": "^3.1.0",
@@ -30,18 +30,18 @@
     "webpack": ">=5.95.0",
     "webpack-dev-middleware": ">=6.1.2",
     "postcss": ">=8.4.31",
-    "zone.js": "~0.13.1",
+    "zone.js": "~0.15.0",
     "ip": "<= 2.0.1",
     "cross-spawn": ">=7.0.5",
     "nanoid": ">=3.3.8",
-    "path-to-regexp": ">=0.1.12"
-    
+    "path-to-regexp": ">=8.2.0"
+
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   "devDependencies": {
     "@angular-devkit/build-angular": "^18.2.6",
     "@angular/cli": "^15.2.9",
     "@angular/compiler-cli": "^15.2.9",
-    "@babel/cli": "^7.22.9",
+    "@babel/cli": "^7.26.4",
     "@babel/core": "^7.22.9",
     "@types/jasmine": "~4.3.0",
     "http-proxy-middleware": "3.0.3",
@@ -57,11 +57,11 @@
     "webpack": ">=5.95.0",
     "webpack-dev-middleware": ">=6.1.2",
     "postcss": ">=8.4.31",
-    "zone.js": "~0.13.1",
+    "zone.js": "~0.15.0",
     "ip": "<= 2.0.1",
     "cross-spawn": ">=7.0.5",
     "nanoid": ">=3.3.8",
-    "path-to-regexp": ">=0.1.12"
-    
+    "path-to-regexp": ">=8.2.0"
+
   }
 }
diff --git a/enhancing-ngif-with-else-condition/package-lock.json b/enhancing-ngif-with-else-condition/package-lock.json
index 8d0a9f23..abbca8a4 100644
--- a/enhancing-ngif-with-else-condition/package-lock.json
+++ b/enhancing-ngif-with-else-condition/package-lock.json
@@ -9,23 +9,22 @@
       "version": "0.1.0",
       "dependencies": {
         "@angular/common": "^15.2.10",
-        "@angular/compiler": "^15.2.10",
+        "@angular/compiler": "^19.0.3",
         "@angular/core": "^15.2.9",
-        "@angular/forms": "^15.2.9",
+        "@angular/forms": "^19.0.3",
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-        "@angular/platform-browser-dynamic": "^15.2.9",
+        "@angular/platform-browser-dynamic": "^19.0.3",
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         "bootstrap": "^5.3.0",
         "bootstrap-icons": "^1.10.5",
         "http-proxy-middleware": ">=3.0.3",
         "ip": "<= 2.0.1",
+        "path-to-regexp": ">=0.1.12",
+        "postcss": ">=8.4.49",
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-        "webpack": ">=5.96.1",
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-        "zone.js": "~0.15.0",
-        "path-to-regexp": ">=0.1.12",
-        "nanoid": ">=3.3.8"
+        "zone.js": "~0.15.0"
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@@ -42,14 +41,13 @@
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         "karma-jasmine-html-reporter": "~2.0.0",
-        "postcss": "^8.4.49",
+        "path-to-regexp": ">=0.1.12",
+        "postcss": ">=8.4.49",
         "rxjs": "~7.8.0",
         "tslib": "^2.8.0",
-        "webpack": ">=5.96.1",
+        "webpack": "^5.97.1",
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-        "zone.js": "~0.15.0",
-        "path-to-regexp": ">=0.1.12",
-        "nanoid": ">=3.3.8"
+        "zone.js": "~0.15.0"
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     "node_modules/@ampproject/remapping": {
@@ -1148,34 +1146,34 @@
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-      "resolved": "https://registry.npmjs.org/@angular/common/-/common-15.2.10.tgz",
-      "integrity": "sha512-jdBn3fctkqoNrJn9VLsUHpcCEhCxWSczdsR+BBbD6T0oLl6vMrAVNjPwfBejnlgfWN1KoRU9kgOYsMxa5apIWQ==",
+      "version": "19.0.3",
+      "resolved": "https://registry.npmjs.org/@angular/common/-/common-19.0.3.tgz",
+      "integrity": "sha512-YyBVZU+LQ38R+/U5vF/b1T3muROKpR0kkupMw7VKnGhQfgrRX5Dk3H2nr9ritt0zPc7TOUuQSlHMf3QWah2GDg==",
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/core": "15.2.10",
+        "@angular/core": "19.0.3",
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       }
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     "node_modules/@angular/compiler": {
-      "version": "15.2.10",
-      "resolved": "https://registry.npmjs.org/@angular/compiler/-/compiler-15.2.10.tgz",
-      "integrity": "sha512-M0XkeU0O73UlJZwDvOyp8/apetz9UKj78eTFDseMYJDLcxe6MpkbkxqpsGZnKYDj7LIep8PmCAKEkhtenE82zw==",
+      "version": "19.0.3",
+      "resolved": "https://registry.npmjs.org/@angular/compiler/-/compiler-19.0.3.tgz",
+      "integrity": "sha512-cxtK4SlHAPstcXfjwOaoR1dAszrzo2iDF8ZiihbZPgKUG3m27qIU3Lp5XBgxfZPlO4jh6TXkWznY7f6Tyxkb0Q==",
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+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/core": "15.2.10"
+        "@angular/core": "19.0.3"
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@@ -1265,54 +1263,54 @@
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+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-19.0.3.tgz",
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "zone.js": "~0.11.4 || ~0.12.0 || ~0.13.0"
+        "zone.js": "~0.15.0"
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-      "resolved": "https://registry.npmjs.org/@angular/forms/-/forms-15.2.10.tgz",
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+      "resolved": "https://registry.npmjs.org/@angular/forms/-/forms-19.0.3.tgz",
+      "integrity": "sha512-8wf8yDR6cW+lOhpzhmxUOiI5Wjr1Kf7o8NuJ2P5K6b7IMNRzRyR5q/6R4NUwtF6aaJ1wNqmSof+goQmtn1HOcw==",
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/common": "15.2.10",
-        "@angular/core": "15.2.10",
-        "@angular/platform-browser": "15.2.10",
+        "@angular/common": "19.0.3",
+        "@angular/core": "19.0.3",
+        "@angular/platform-browser": "19.0.3",
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     "node_modules/@angular/platform-browser": {
-      "version": "15.2.10",
-      "resolved": "https://registry.npmjs.org/@angular/platform-browser/-/platform-browser-15.2.10.tgz",
-      "integrity": "sha512-9tbgVGSJqwfrOzT8aA/kWBLNhJSQ9gUg0CJxwFBSJm8VkBUJrszoBlDsnSvlxx8/W2ejNULKHFTXeUzq0O/+RQ==",
+      "version": "19.0.3",
+      "resolved": "https://registry.npmjs.org/@angular/platform-browser/-/platform-browser-19.0.3.tgz",
+      "integrity": "sha512-vggWHSzOsCpYqnGq5IIN+n7xdEvXfgUGaMdgzPhFMTsnlMTUs5+VEFl9tX9FANHkXKB5S1RttVyvEXRqJM9ncQ==",
       "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/animations": "15.2.10",
-        "@angular/common": "15.2.10",
-        "@angular/core": "15.2.10"
+        "@angular/animations": "19.0.3",
+        "@angular/common": "19.0.3",
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@@ -1321,38 +1319,38 @@
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+      "resolved": "https://registry.npmjs.org/@angular/platform-browser-dynamic/-/platform-browser-dynamic-19.0.3.tgz",
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       "dependencies": {
         "tslib": "^2.3.0"
       },
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/compiler": "15.2.10",
-        "@angular/core": "15.2.10",
-        "@angular/platform-browser": "15.2.10"
+        "@angular/common": "19.0.3",
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+      "resolved": "https://registry.npmjs.org/@angular/router/-/router-19.0.3.tgz",
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/core": "15.2.10",
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@@ -4822,148 +4820,163 @@
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+      "dev": true,
+      "license": "BSD-3-Clause"
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-      "dev": true
+      "dev": true,
+      "license": "Apache-2.0"
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diff --git a/enhancing-ngif-with-else-condition/package.json b/enhancing-ngif-with-else-condition/package.json
index 395cd8f5..deaba83e 100644
--- a/enhancing-ngif-with-else-condition/package.json
+++ b/enhancing-ngif-with-else-condition/package.json
@@ -11,18 +11,18 @@
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-    "@angular/compiler": "^15.2.10",
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-    "@angular/forms": "^15.2.9",
+    "@angular/forms": "^19.0.3",
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-    "@angular/platform-browser-dynamic": "^15.2.9",
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     "bootstrap-icons": "^1.10.5",
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     "tslib": "^2.8.0",
-    "webpack": ">=5.96.1",
+    "webpack": ">=5.97.1",
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@@ -45,7 +45,7 @@
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-    "webpack": ">=5.96.1",
+    "webpack": ">=5.97.1",
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diff --git a/first-app/package-lock.json b/first-app/package-lock.json
index 6770cab2..ed97a7df 100644
--- a/first-app/package-lock.json
+++ b/first-app/package-lock.json
@@ -8,11 +8,11 @@
       "name": "first-app",
       "version": "0.1.0",
       "dependencies": {
-        "@angular/animations": "^14.2.0",
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         "@angular/compiler": "^14.2.0",
         "@angular/core": "^14.2.0",
-        "@angular/forms": "^14.2.0",
+        "@angular/forms": "^19.0.3",
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@@ -20,13 +20,14 @@
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         "bootstrap": "^5.3.2",
         "ip": "<= 2.0.1",
+        "nanoid": ">=3.3.8",
+        "path-to-regexp": ">=0.1.12",
+        "rollup": ">=4.27.2",
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         "semver": ">=7.6.3",
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-        "zone.js": "~0.15.0",
-        "nanoid": ">=3.3.8",
-        "path-to-regexp": ">=0.1.12"
+        "zone.js": "~0.15.0"
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         "karma-jasmine-html-reporter": "~2.0.0",
-        "rollup": "^4.27.2",
+        "nanoid": ">=3.3.8",
+        "path-to-regexp": ">=0.1.12",
+        "rollup": ">=4.27.2",
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-        "nanoid": ">=3.3.8",
-        "path-to-regexp": ">=0.1.12"
+        "zone.js": "~0.15.0"
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@@ -1106,17 +1107,18 @@
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+      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-19.0.1.tgz",
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+      "license": "MIT",
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-        "node": "^14.15.0 || >=16.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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@@ -1189,32 +1191,35 @@
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+      "license": "MIT",
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@@ -1253,51 +1258,54 @@
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-        "@angular/common": "14.3.0",
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-        "@angular/compiler": "14.3.0",
-        "@angular/core": "14.3.0",
-        "@angular/platform-browser": "14.3.0"
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+      "resolved": "https://registry.npmjs.org/@angular/router/-/router-19.0.1.tgz",
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-        "@angular/core": "14.3.0",
-        "@angular/platform-browser": "14.3.0",
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@@ -10078,11 +10095,12 @@
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+      "license": "MIT",
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-        "nanoid": "bin/nanoid.cjs"
+        "nanoid": "bin/nanoid.js"
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-        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+        "node": "^18 || >=20"
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@@ -10950,10 +10968,14 @@
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+      "version": "8.2.0",
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+      "license": "MIT",
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+    "node_modules/postcss/node_modules/nanoid": {
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+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz",
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+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
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+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
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@@ -13611,6 +13652,25 @@
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+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz",
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+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
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diff --git a/first-app/package.json b/first-app/package.json
index dbba1b3b..a6ef1f69 100644
--- a/first-app/package.json
+++ b/first-app/package.json
@@ -10,11 +10,11 @@
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-        "@angular/animations": "^14.2.0",
+        "@angular/animations": "^19.0.1",
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         "@angular/compiler": "^14.2.0",
         "@angular/core": "^14.2.0",
-        "@angular/forms": "^14.2.0",
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@@ -29,7 +29,7 @@
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@@ -54,7 +54,7 @@
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diff --git a/passing-usng-data-event-binding/package-lock.json b/passing-usng-data-event-binding/package-lock.json
index 01442ef9..758b82d2 100644
--- a/passing-usng-data-event-binding/package-lock.json
+++ b/passing-usng-data-event-binding/package-lock.json
@@ -8,44 +8,41 @@
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+        "@angular/animations": "^19.0.1",
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-        "@angular/core": "^15.2.9",
+        "@angular/core": "^19.0.1",
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+        "ip": "<= 2.0.1",
+        "path-to-regexp": ">=0.1.12",
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-        "ip": "<= 2.0.1",
-        "cross-spawn": ">=7.0.5",
-        "path-to-regexp": ">=0.1.12"
+        "zone.js": "~0.15.0"
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         "@angular/compiler-cli": "^15.2.9",
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-        "@babel/core": "^7.23.9",
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-        "ip": "<= 2.0.1",
-        "cross-spawn": ">=7.0.5",
-        "path-to-regexp": ">=0.1.12"
+        "webpack": ">=5.95.0"
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@@ -332,6 +329,47 @@
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+      "license": "MIT",
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+        "@babel/generator": "^7.25.0",
+        "@babel/helper-compilation-targets": "^7.25.2",
+        "@babel/helper-module-transforms": "^7.25.2",
+        "@babel/helpers": "^7.25.0",
+        "@babel/parser": "^7.25.0",
+        "@babel/template": "^7.25.0",
+        "@babel/traverse": "^7.25.2",
+        "@babel/types": "^7.25.2",
+        "convert-source-map": "^2.0.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.2",
+        "json5": "^2.2.3",
+        "semver": "^6.3.1"
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+      "engines": {
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+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/babel"
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+      "version": "6.3.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
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+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
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@@ -622,6 +660,13 @@
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         "tslib": "^2.3.0"
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-        "@babel/types": "^7.25.6",
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@@ -3173,29 +3254,44 @@
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+      "license": "MIT",
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-        "@babel/types": "^7.25.6",
+        "@babel/parser": "^7.26.3",
+        "@babel/types": "^7.26.3",
         "@jridgewell/gen-mapping": "^0.3.5",
         "@jridgewell/trace-mapping": "^0.3.25",
-        "jsesc": "^2.5.1"
+        "jsesc": "^3.0.2"
       },
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         "node": ">=6.9.0"
       }
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+    "node_modules/@babel/traverse/node_modules/jsesc": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-3.1.0.tgz",
+      "integrity": "sha512-/sM3dO2FOzXjKQhJuo0Q173wf2KOo8t4I8vHy6lF9poUp7bKT0/NHE8fPX23PwfhnykfqnC2xRxOnVw5XuGIaA==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "jsesc": "bin/jsesc"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/@babel/types": {
-      "version": "7.25.6",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.25.6.tgz",
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+      "version": "7.26.3",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.26.3.tgz",
+      "integrity": "sha512-vN5p+1kl59GVKMvTHt55NzzmYVxprfJD+ql7U9NFIfKCBkYE55LYtS+WtPlaYOyzydrKI8Nezd+aZextrd+FMA==",
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+      "license": "MIT",
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-        "@babel/helper-string-parser": "^7.24.8",
-        "@babel/helper-validator-identifier": "^7.24.7",
-        "to-fast-properties": "^2.0.0"
+        "@babel/helper-string-parser": "^7.25.9",
+        "@babel/helper-validator-identifier": "^7.25.9"
       },
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@@ -5236,18 +5332,6 @@
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-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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@@ -5716,20 +5800,6 @@
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-      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
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-        "supports-color": "^5.3.0"
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       "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.7.0.tgz",
@@ -5923,21 +5993,6 @@
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-      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
-      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
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-    "node_modules/color-name": {
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-      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
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@@ -7148,6 +7203,13 @@
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       "dev": true
     },
+    "node_modules/express/node_modules/path-to-regexp": {
+      "version": "0.1.10",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.10.tgz",
+      "integrity": "sha512-7lf7qcQidTku0Gu3YDPc8DJ1q7OOucfa/BSsIwjuh56VU7katFvuM8hULfkwB3Fns/rsVF7PwPKVw1sl5KQS9w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/express/node_modules/statuses": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.1.tgz",
@@ -7694,15 +7756,6 @@
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-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
-      "integrity": "sha512-sKJf1+ceQBr4SMkvQnBDNDtf4TXpVhVGateu0t918bl30FnbE2m4vNLX+VWe/dpjlb+HugGYzW7uQXH98HPEYw==",
-      "dev": true,
-      "engines": {
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       "resolved": "https://registry.npmjs.org/has-property-descriptors/-/has-property-descriptors-1.0.2.tgz",
@@ -8714,7 +8767,8 @@
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-      "dev": true
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/js-yaml": {
       "version": "4.1.0",
@@ -11028,10 +11082,14 @@
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-      "version": "0.1.10",
-      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.10.tgz",
-      "integrity": "sha512-7lf7qcQidTku0Gu3YDPc8DJ1q7OOucfa/BSsIwjuh56VU7katFvuM8hULfkwB3Fns/rsVF7PwPKVw1sl5KQS9w==",
-      "dev": true
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.2.0.tgz",
+      "integrity": "sha512-TdrF7fW9Rphjq4RjrW0Kp2AW0Ahwu9sRGTkS6bvDi0SCwZlEZYmcfDbEsTz8RVk0EHIS/Vd1bv3JhG+1xZuAyQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=16"
+      }
     },
     "node_modules/path-type": {
       "version": "5.0.0",
@@ -12693,18 +12751,6 @@
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-    "node_modules/supports-color": {
-      "version": "5.5.0",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
-      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
-      "dev": true,
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-      },
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     "node_modules/supports-preserve-symlinks-flag": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
@@ -12946,15 +12992,6 @@
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-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
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-      "dev": true,
-      "engines": {
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       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
diff --git a/passing-usng-data-event-binding/package.json b/passing-usng-data-event-binding/package.json
index 5a864c4b..37ff6765 100644
--- a/passing-usng-data-event-binding/package.json
+++ b/passing-usng-data-event-binding/package.json
@@ -10,30 +10,30 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^15.2.9",
+    "@angular/animations": "^19.0.1",
     "@angular/common": "^15.2.9",
     "@angular/compiler": "^15.2.9",
-    "@angular/core": "^15.2.9",
+    "@angular/core": "^19.0.1",
     "@angular/forms": "^15.2.9",
-    "@angular/platform-browser": "^15.2.9",
+    "@angular/platform-browser": "^19.0.1",
     "@angular/platform-browser-dynamic": "^15.2.9",
     "@angular/router": "^15.2.9",
     "@babel/cli": "^7.25.6",
-    "@babel/core": "^7.23.9",
+    "@babel/core": "^7.26.0",
     "http-proxy-middleware": ">=2.0.7",  
     "rxjs": "~7.8.0",
     "tslib": "^2.7.0",
     "webpack": ">=5.95.0",
     "zone.js": "~0.15.0",
     "ip": "<= 2.0.1",
-    "path-to-regexp": ">=0.1.12"
+    "path-to-regexp": ">=8.2.0"
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "^18.2.6",
     "@angular/cli": "~15.2.9",
     "@angular/compiler-cli": "^15.2.9",
     "@babel/cli": "^7.25.6",
-    "@babel/core": "^7.23.9",
+    "@babel/core": "^7.26.0",
     "@types/jasmine": "~4.3.0",
     "http-proxy-middleware": ">=2.0.7",
     "jasmine-core": "~4.5.0",
@@ -45,6 +45,6 @@
     "typescript": "~4.9.4",
     "webpack": ">=5.95.0",
     "ip": "<= 2.0.1",
-    "path-to-regexp": ">=0.1.12"
+    "path-to-regexp": ">=8.2.0"
   }
 }
diff --git a/prj-start-b/package-lock.json b/prj-start-b/package-lock.json
index 3cb05bc6..97e537eb 100644
--- a/prj-start-b/package-lock.json
+++ b/prj-start-b/package-lock.json
@@ -8,31 +8,29 @@
       "name": "project-start-b",
       "version": "0.1.0",
       "dependencies": {
-        "@angular/animations": "^15.2.9",
+        "@angular/animations": "^19.0.1",
         "@angular/common": "^15.2.9",
-        "@angular/compiler": "^15.2.9",
+        "@angular/compiler": "^19.0.1",
         "@angular/core": "^15.2.9",
         "@angular/forms": "^15.2.9",
         "@angular/platform-browser": "^15.2.9",
-        "@angular/platform-browser-dynamic": "^15.2.9",
+        "@angular/platform-browser-dynamic": "^19.0.1",
         "@angular/router": "^15.2.9",
         "@babel/cli": "^7.22.9",
         "@babel/core": "^7.22.9",
         "@npmcli/fs": "^3.1.0",
-        "http-proxy-middleware": ">=3.0.3",
         "bootstrap": "^5.3.3",
         "bootstrap-icons": "^1.10.5",
+        "http-proxy-middleware": ">=3.0.3",
+        "ip": "<= 2.0.1",
+        "nanoid": ">=3.3.8",
+        "path-to-regexp": ">=0.1.12",
         "postcss": ">=8.4.31",
         "rxjs": "~7.8.0",
         "tslib": "^2.3.0",
-        "typescript": "~4.9.4",
         "webpack": ">=5.95.0",
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-        "zone.js": "~0.12.0",
-        "ip": "<= 2.0.1",
-        "cross-spawn": ">=7.0.5",
-        "nanoid": ">=3.3.8",
-        "path-to-regexp": ">=0.1.12"
+        "zone.js": "~0.12.0"
       },
       "devDependencies": {
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@@ -41,26 +39,23 @@
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         "@babel/core": "^7.22.9",
         "@types/jasmine": "~4.3.0",
-        "http-proxy-middleware": ">=3.0.3",
         "bootstrap": "^5.3.3",
         "bootstrap-icons": "^1.10.5",
+        "ip": "<= 2.0.1",
         "jasmine-core": "~4.5.0",
         "karma": "~6.4.0",
         "karma-chrome-launcher": "~3.1.0",
         "karma-coverage": "~2.2.0",
         "karma-jasmine": "~5.1.0",
         "karma-jasmine-html-reporter": "~2.0.0",
-        "postcss": ">=8.4.31",
+        "nanoid": ">=3.3.8",
+        "path-to-regexp": ">=0.1.12",
         "rxjs": "~7.8.0",
         "tslib": "^2.3.0",
-        "typescript": "~4.9.4",
+        "typescript": "^5.7.2",
         "webpack": ">=5.95.0",
         "webpack-dev-middleware": ">=6.1.2",
-        "zone.js": "~0.12.0",
-        "ip": "<= 2.0.1",
-        "cross-spawn": ">=7.0.5",
-        "nanoid": ">=3.3.8",
-        "path-to-regexp": ">=0.1.12"
+        "zone.js": "~0.12.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -725,6 +720,25 @@
         "@jridgewell/sourcemap-codec": "^1.5.0"
       }
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+    "node_modules/@angular-devkit/build-angular/node_modules/nanoid": {
+      "version": "3.3.8",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz",
+      "integrity": "sha512-WNLf5Sd8oZxOm+TzppcYk8gVOgP+l58xNy58D0nbUnOxOWRWvlcCV4kUF7ltmI6PsrLl/BgKEyS4mqsGChFN0w==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+      }
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@@ -1118,17 +1132,18 @@
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-      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-15.2.9.tgz",
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+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-19.0.1.tgz",
+      "integrity": "sha512-1TZ3meVmoMuQwXaHSCeIGq8tmGcwobCQM2AQ6hfK+j6eyWTSx8BdWWi+Z1iIjiYFx3pJljQiWLAHULZ66Ep/GQ==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/core": "15.2.9"
+        "@angular/core": "19.0.1"
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@@ -1166,32 +1181,35 @@
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+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/common/-/common-19.0.1.tgz",
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+      "license": "MIT",
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         "tslib": "^2.3.0"
       },
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/core": "15.2.9",
+        "@angular/core": "19.0.1",
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-      "version": "15.2.9",
-      "resolved": "https://registry.npmjs.org/@angular/compiler/-/compiler-15.2.9.tgz",
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+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/compiler/-/compiler-19.0.1.tgz",
+      "integrity": "sha512-loyI701+As+sWsE4yr9HpIPBqIohpNrGby/hsXtr+zJTMUWp/sKZlavctVtUsWWJhwHMevoybdgd3N9NY97F7g==",
+      "license": "MIT",
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         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/core": "15.2.9"
+        "@angular/core": "19.0.1"
+
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@@ -1281,51 +1299,54 @@
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-      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
+      "version": "5.7.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.7.2.tgz",
+      "integrity": "sha512-i5t66RHxDvVN40HfDd1PsEThGNnlMCMT3jMUuoh9/0TaqWevNontacunWyN02LA9/fIbEWlcHZcgTKb9QoaLfg==",
       "dev": true,
+      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
     "node_modules/ua-parser-js": {
@@ -13128,8 +13161,7 @@
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       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.19.8.tgz",
-      "integrity": "sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==",
-      "dev": true
+      "integrity": "sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw=="
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     "node_modules/unicode-canonical-property-names-ecmascript": {
       "version": "2.0.1",
diff --git a/prj-start-b/package.json b/prj-start-b/package.json
index 62056186..aba2c198 100644
--- a/prj-start-b/package.json
+++ b/prj-start-b/package.json
@@ -10,18 +10,18 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^15.2.9",
+    "@angular/animations": "^19.0.1",
     "@angular/common": "^15.2.9",
-    "@angular/compiler": "^15.2.9",
+    "@angular/compiler": "^19.0.1",
     "@angular/core": "^15.2.9",
     "@angular/forms": "^15.2.9",
     "@angular/platform-browser": "^15.2.9",
-    "@angular/platform-browser-dynamic": "^15.2.9",
+    "@angular/platform-browser-dynamic": "^19.0.1",
     "@angular/router": "^15.2.9",
     "@babel/cli": "^7.22.9",
     "@babel/core": "^7.22.9",
     "@npmcli/fs": "^3.1.0",
-    "typescript": "~4.9.4",
+    "typescript": "~5.7.2",
     "bootstrap": "^5.3.3",
     "bootstrap-icons": "^1.10.5",
     "rxjs": "~7.8.0",
@@ -33,7 +33,7 @@
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     "ip": "<= 2.0.1",
     "nanoid": ">=3.3.8",
-    "path-to-regexp": ">=0.1.12"
+    "path-to-regexp": ">=8.2.0"
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@@ -48,7 +48,7 @@
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     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.0.0",
-    "typescript": "~4.9.4",
+    "typescript": "~5.7.2",
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     "bootstrap-icons": "^1.10.5",
     "rxjs": "~7.8.0",
@@ -58,6 +58,6 @@
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     "nanoid": ">=3.3.8",
-    "path-to-regexp": ">=0.1.12"
+    "path-to-regexp": ">=8.2.0"
   }
 }
diff --git a/prj-start-c/package-lock.json b/prj-start-c/package-lock.json
index 0f4f4617..a81581ec 100644
--- a/prj-start-c/package-lock.json
+++ b/prj-start-c/package-lock.json
@@ -8,14 +8,14 @@
       "name": "project-start-c",
       "version": "0.1.0",
       "dependencies": {
-        "@angular/animations": "^15.2.9",
+        "@angular/animations": "^19.0.3",
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         "@angular/core": "^15.2.9",
         "@angular/forms": "^15.2.9",
-        "@angular/platform-browser": "^15.2.9",
+        "@angular/platform-browser": "^19.0.1",
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-        "@angular/router": "^15.2.9",
+        "@angular/router": "^19.0.1",
         "@babel/cli": "^7.22.9",
         "@babel/core": "^7.22.9",
         "@npmcli/fs": "^3.1.0",
@@ -1133,17 +1133,18 @@
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-      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-15.2.9.tgz",
-      "integrity": "sha512-GQujLhI0cQFcl4Q8y0oSYKSRnW23GIeSL+Arl4eFufziJ9hGAAQNuesaNs/7i+9UlTHDMkPH3kd5ScXuYYz6wg==",
+      "version": "19.0.3",
+      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-19.0.3.tgz",
+      "integrity": "sha512-YWoXM2S5p+Eq6cX1xjtFaai23oVNnbf3u34pEQCyKDjZpqI5lMu8e63lQT0tf7fZttEWlNUYRTwQ9+MpZ0sjzQ==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/core": "15.2.9"
+        "@angular/core": "19.0.3"
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     "node_modules/@angular/cli": {
@@ -1181,17 +1182,18 @@
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-      "version": "15.2.9",
-      "resolved": "https://registry.npmjs.org/@angular/common/-/common-15.2.9.tgz",
-      "integrity": "sha512-LM9/UHG2dRrOzlu2KovrFwWIziFMjRxHzSP3Igw6Symw/wIl0kXGq8Fn6RpFP78zmLqnv+IQOoRiby9MCXsI4g==",
+      "version": "19.0.3",
+      "resolved": "https://registry.npmjs.org/@angular/common/-/common-19.0.3.tgz",
+      "integrity": "sha512-YyBVZU+LQ38R+/U5vF/b1T3muROKpR0kkupMw7VKnGhQfgrRX5Dk3H2nr9ritt0zPc7TOUuQSlHMf3QWah2GDg==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/core": "15.2.9",
+        "@angular/core": "19.0.3",
         "rxjs": "^6.5.3 || ^7.4.0"
       }
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@@ -1208,6 +1210,7 @@
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         "@angular/core": "19.0.1"
+
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         "@angular/core": {
@@ -1297,51 +1300,55 @@
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-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-15.2.9.tgz",
-      "integrity": "sha512-w46Z1yUXCQfKV7XfnamOoLA2VD0MVUUYVrUjO73mHSskDXSXxfZAEHO9kfUS71Cj35PvhP3mbkqWscpea2WeYg==",
+      "version": "19.0.3",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-19.0.3.tgz",
+      "integrity": "sha512-WM844gDzrbHtcM2TJB9DmfCmenUYyNSI6h924CeppDW5oG8ShinQGiWNjF5oI6EZ4tG60uK3QvCm3kjr1dmbOA==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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       "peerDependencies": {
         "rxjs": "^6.5.3 || ^7.4.0",
-        "zone.js": "~0.11.4 || ~0.12.0 || ~0.13.0"
+        "zone.js": "~0.15.0"
       }
     },
     "node_modules/@angular/forms": {
-      "version": "15.2.9",
-      "resolved": "https://registry.npmjs.org/@angular/forms/-/forms-15.2.9.tgz",
-      "integrity": "sha512-sk0pC2EFi2Ohg5J0q0NYptbT+2WOkoiERSMYA39ncDvlSZBWsNlxpkbGUSck7NIxjK2QfcVN1ldGbHlZTFvtqg==",
+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/forms/-/forms-19.0.1.tgz",
+      "integrity": "sha512-PNMQVi97ZK9X7fQeO1li6LxoL9U6v7ByC+4kj7xHAcOGaBCB+EJ/ZPKCKeaGn4G7mJd3iH8SMVzoUQc028KIcw==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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       "peerDependencies": {
-        "@angular/common": "15.2.9",
-        "@angular/core": "15.2.9",
-        "@angular/platform-browser": "15.2.9",
+        "@angular/common": "19.0.1",
+        "@angular/core": "19.0.1",
+        "@angular/platform-browser": "19.0.1",
         "rxjs": "^6.5.3 || ^7.4.0"
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     "node_modules/@angular/platform-browser": {
-      "version": "15.2.9",
-      "resolved": "https://registry.npmjs.org/@angular/platform-browser/-/platform-browser-15.2.9.tgz",
-      "integrity": "sha512-ufCHeSX+U6d43YOMkn3igwfqtlozoCXADcbyfUEG8m2y9XASobqmCKvdSk/zfl62oyiA8msntWBJVBE2l4xKXg==",
+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/platform-browser/-/platform-browser-19.0.1.tgz",
+      "integrity": "sha512-ycl6GsK5avKz2PKyKR8G3eqH5rWdzTqRfYStN+1Ufhopx9jmCQ9r0JSIekoHJ8W2KDZfojWp6f4izDMvKnUpvA==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/animations": "15.2.9",
-        "@angular/common": "15.2.9",
-        "@angular/core": "15.2.9"
+        "@angular/animations": "19.0.1",
+        "@angular/common": "19.0.1",
+        "@angular/core": "19.0.1"
+
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       "peerDependenciesMeta": {
         "@angular/animations": {
@@ -1350,36 +1357,38 @@
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-      "resolved": "https://registry.npmjs.org/@angular/platform-browser-dynamic/-/platform-browser-dynamic-15.2.9.tgz",
-      "integrity": "sha512-ZIYDM6MShblb8OyV1m4+18lJJ2LCeICmeg2uSbpFYptYBSOClrTiYOOFVDJvn7HLvNzljLs16XPrgyaYVqNpcw==",
+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/platform-browser-dynamic/-/platform-browser-dynamic-19.0.1.tgz",
+      "integrity": "sha512-A8sM0NTwZPFpv5kWSUeRhMENCw8kmBxR9CX9TMVeU6u9TP+IT3SFhUWhDQZNbmJAHhyAuk5B1gBJ/aoz0/OBcw==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/common": "15.2.9",
-        "@angular/compiler": "15.2.9",
-        "@angular/core": "15.2.9",
-        "@angular/platform-browser": "15.2.9"
+        "@angular/common": "19.0.1",
+        "@angular/compiler": "19.0.1",
+        "@angular/core": "19.0.1",
+        "@angular/platform-browser": "19.0.1"
       }
     },
     "node_modules/@angular/router": {
-      "version": "15.2.9",
-      "resolved": "https://registry.npmjs.org/@angular/router/-/router-15.2.9.tgz",
-      "integrity": "sha512-UCbh5DLSDhybv0xKYT7kGQMfOVdyhHIHOZz5EYVebbhste6S+W1LE57vTHq7QtxJsyKBa/WSkaUkCLXD6ntCAg==",
+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/router/-/router-19.0.1.tgz",
+      "integrity": "sha512-/9f7RxVqOTASFhpqla7x9V58SE8Yv4SClKRikvv5Tn5EGDbSVR3DgGu6qENP57A2pVPW4Ho5er5KKT35HjhcFw==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/common": "15.2.9",
-        "@angular/core": "15.2.9",
-        "@angular/platform-browser": "15.2.9",
+        "@angular/common": "19.0.1",
+        "@angular/core": "19.0.1",
+        "@angular/platform-browser": "19.0.1",
         "rxjs": "^6.5.3 || ^7.4.0"
       }
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@@ -14493,12 +14502,10 @@
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-      "version": "0.12.0",
-      "resolved": "https://registry.npmjs.org/zone.js/-/zone.js-0.12.0.tgz",
-      "integrity": "sha512-XtC+I5dXU14HrzidAKBNMqneIVUykLEAA1x+v4KVrd6AUPWlwYORF8KgsVqvgdHiKZ4BkxxjvYi/ksEixTPR0Q==",
-      "dependencies": {
-        "tslib": "^2.3.0"
-      }
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/zone.js/-/zone.js-0.15.0.tgz",
+      "integrity": "sha512-9oxn0IIjbCZkJ67L+LkhYWRyAy7axphb3VgE2MBDlOqnmHMPWGYMxJxBYFueFq/JGY2GMwS0rU+UCLunEmy5UA==",
+      "license": "MIT"
     }
   }
 }
diff --git a/prj-start-c/package.json b/prj-start-c/package.json
index e8775fb3..8c6ecce1 100644
--- a/prj-start-c/package.json
+++ b/prj-start-c/package.json
@@ -10,14 +10,14 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^15.2.9",
+    "@angular/animations": "^19.0.3",
     "@angular/common": "^15.2.9",
     "@angular/compiler": "^19.0.1",
     "@angular/core": "^15.2.9",
     "@angular/forms": "^15.2.9",
-    "@angular/platform-browser": "^15.2.9",
+    "@angular/platform-browser": "^19.0.1",
     "@angular/platform-browser-dynamic": "^15.2.9",
-    "@angular/router": "^15.2.9",
+    "@angular/router": "^19.0.1",
     "@babel/cli": "^7.22.9",
     "@babel/core": "^7.22.9",
     "@npmcli/fs": "^3.1.0",
@@ -29,10 +29,10 @@
     "webpack": ">=5.95.0",
     "webpack-dev-middleware": ">=6.1.2",
     "postcss": ">=8.4.31", 
-    "zone.js": "~0.12.0",
+    "zone.js": "~0.15.0",
     "ip": "<= 2.0.1",
     "nanoid": ">=3.3.8",
-    "path-to-regexp": ">=0.1.12"
+    "path-to-regexp": ">=8.2.0"
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "^18.2.6",
@@ -55,9 +55,9 @@
     "webpack": ">=5.95.0",
     "webpack-dev-middleware": ">=6.1.2",
     "postcss": ">=8.4.31", 
-    "zone.js": "~0.12.0",
+    "zone.js": "~0.15.0",
     "ip": "<= 2.0.1",
     "nanoid": ">=3.3.8",
-    "path-to-regexp": ">=0.1.12"
+    "path-to-regexp": ">=8.2.0"
   }
 }
diff --git a/styling-elements-dynamically-ngStyle/package-lock.json b/styling-elements-dynamically-ngStyle/package-lock.json
index 3bbf04e4..b1a67bb0 100644
--- a/styling-elements-dynamically-ngStyle/package-lock.json
+++ b/styling-elements-dynamically-ngStyle/package-lock.json
@@ -8,24 +8,23 @@
       "name": "combining-forms-databinding",
       "version": "0.0.0",
       "dependencies": {
-        "@angular/animations": "^15.2.10",
+        "@angular/animations": "^19.0.1",
         "@angular/common": "^15.2.10",
-        "@angular/compiler": "^15.2.10",
+        "@angular/compiler": "^19.0.1",
         "@angular/core": "^15.2.10",
         "@angular/forms": "^15.2.10",
-        "@angular/platform-browser": "^15.2.10",
+        "@angular/platform-browser": "^19.0.1",
         "@angular/platform-browser-dynamic": "^15.2.10",
-        "@angular/router": "^15.2.10",
+        "@angular/router": "^19.0.1",
         "bootstrap": "^5.3.3",
         "bootstrap-icons": "^1.11.3",
         "cross-spawn": ">=7.0.5",
         "http-proxy-middleware": ">=3.0.3",
-        "rxjs": "~7.8.1",
-        "tslib": "^2.8.1",
-        "zone.js": "~0.15.0",
         "nanoid": ">=3.3.8",
         "path-to-regexp": ">=0.1.12",
-        "nanoid": ">=3.3.8"
+        "rxjs": "~7.8.1",
+        "tslib": "^2.8.1",
+        "zone.js": "~0.15.0"
       },
       "devDependencies": {
         "@angular-devkit/build-angular": "^18.2.6",
@@ -41,11 +40,10 @@
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         "karma-jasmine": "~5.1.0",
         "karma-jasmine-html-reporter": "~2.0.0",
-        "typescript": "~4.9.4",
-        "webpack": "^5.95.0",
         "nanoid": ">=3.3.8",
         "path-to-regexp": ">=0.1.12",
-        "nanoid": ">=3.3.8"
+        "typescript": "~4.9.4",
+        "webpack": "^5.95.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -710,6 +708,25 @@
         "@jridgewell/sourcemap-codec": "^1.5.0"
       }
     },
+    "node_modules/@angular-devkit/build-angular/node_modules/nanoid": {
+      "version": "3.3.8",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz",
+      "integrity": "sha512-WNLf5Sd8oZxOm+TzppcYk8gVOgP+l58xNy58D0nbUnOxOWRWvlcCV4kUF7ltmI6PsrLl/BgKEyS4mqsGChFN0w==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+      }
+    },
     "node_modules/@angular-devkit/build-angular/node_modules/open": {
       "version": "10.1.0",
       "resolved": "https://registry.npmjs.org/open/-/open-10.1.0.tgz",
@@ -1110,17 +1127,18 @@
       "dev": true
     },
     "node_modules/@angular/animations": {
-      "version": "15.2.10",
-      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-15.2.10.tgz",
-      "integrity": "sha512-yxfN8qQpMaukRU5LjFkJBmy85rqrOp86tYVCsf+hmPEFRiXBMUj6xYLeCMcpk3Mt1JtnWGBR34ivGx+7bNeAow==",
+      "version": "19.0.1",
+      "resolved": "https://registry.npmjs.org/@angular/animations/-/animations-19.0.1.tgz",
+      "integrity": "sha512-1TZ3meVmoMuQwXaHSCeIGq8tmGcwobCQM2AQ6hfK+j6eyWTSx8BdWWi+Z1iIjiYFx3pJljQiWLAHULZ66Ep/GQ==",
+      "license": "MIT",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "engines": {
-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
       },
       "peerDependencies": {
-        "@angular/core": "15.2.10"
+        "@angular/core": "19.0.1"
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     "node_modules/@angular/cli": {
@@ -1158,32 +1176,34 @@
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-      "resolved": "https://registry.npmjs.org/@angular/common/-/common-15.2.10.tgz",
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+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "zone.js": "~0.11.4 || ~0.12.0 || ~0.13.0"
+        "zone.js": "~0.15.0"
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-        "@angular/core": "15.2.10",
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+        "@angular/common": "19.0.1",
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+      "license": "MIT",
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+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/animations": "15.2.10",
-        "@angular/common": "15.2.10",
-        "@angular/core": "15.2.10"
+        "@angular/animations": "19.0.1",
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@@ -1326,36 +1349,38 @@
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+      "license": "MIT",
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/compiler": "15.2.10",
-        "@angular/core": "15.2.10",
-        "@angular/platform-browser": "15.2.10"
+        "@angular/common": "19.0.1",
+        "@angular/compiler": "19.0.1",
+        "@angular/core": "19.0.1",
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-      "resolved": "https://registry.npmjs.org/@angular/router/-/router-15.2.10.tgz",
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+      "resolved": "https://registry.npmjs.org/@angular/router/-/router-19.0.1.tgz",
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+      "license": "MIT",
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-        "node": "^14.20.0 || ^16.13.0 || >=18.10.0"
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
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-        "@angular/common": "15.2.10",
-        "@angular/core": "15.2.10",
-        "@angular/platform-browser": "15.2.10",
+        "@angular/common": "19.0.1",
+        "@angular/core": "19.0.1",
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@@ -7238,6 +7263,13 @@
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+    "node_modules/express/node_modules/path-to-regexp": {
+      "version": "0.1.10",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.10.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
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@@ -10383,9 +10415,9 @@
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+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-5.0.9.tgz",
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@@ -10393,11 +10425,12 @@
           "url": "https://github.com/sponsors/ai"
         }
       ],
+      "license": "MIT",
       "bin": {
-        "nanoid": "bin/nanoid.cjs"
+        "nanoid": "bin/nanoid.js"
       },
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-        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+        "node": "^18 || >=20"
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     "node_modules/needle": {
@@ -11312,10 +11345,14 @@
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+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.2.0.tgz",
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+      "license": "MIT",
+      "engines": {
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+      }
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@@ -11536,6 +11573,25 @@
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+    "node_modules/postcss/node_modules/nanoid": {
+      "version": "3.3.8",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.8.tgz",
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+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
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diff --git a/styling-elements-dynamically-ngStyle/package.json b/styling-elements-dynamically-ngStyle/package.json
index b5f8f0dc..76de330f 100644
--- a/styling-elements-dynamically-ngStyle/package.json
+++ b/styling-elements-dynamically-ngStyle/package.json
@@ -10,14 +10,14 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^15.2.10",
+    "@angular/animations": "^19.0.1",
     "@angular/common": "^15.2.10",
-    "@angular/compiler": "^15.2.10",
+    "@angular/compiler": "^19.0.1",
     "@angular/core": "^15.2.10",
     "@angular/forms": "^15.2.10",
-    "@angular/platform-browser": "^15.2.10",
+    "@angular/platform-browser": "^19.0.1",
     "@angular/platform-browser-dynamic": "^15.2.10",
-    "@angular/router": "^15.2.10",
+    "@angular/router": "^19.0.1",
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     "bootstrap": "^5.3.3",
     "bootstrap-icons": "^1.11.3",
@@ -26,7 +26,7 @@
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     "cross-spawn": ">=7.0.5",
     "path-to-regexp": ">=0.1.12",
-    "nanoid": ">=3.3.8"
+    "nanoid": ">=5.0.9"
 
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@@ -45,9 +45,8 @@
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     "cookie": ">=0.7.0",
     "cross-spawn": ">=7.0.5",
-    "nanoid": ">=3.3.8",
+    "nanoid": ">=5.0.9",
     "path-to-regexp": ">=0.1.12"
     
-
   }
 }