diff --git a/package-lock.json b/package-lock.json
index fc0ec73..d47ba3f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,7 +38,7 @@
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         "jsdom": "^22.1.0",
         "prettier": "^2.8.1",
-        "svelte": "^3.59.2",
+        "svelte": "^4.2.19",
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         "svelte-jester": "^3.0.0",
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@@ -2552,9 +2552,9 @@
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-      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.15.tgz",
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+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.0.tgz",
+      "integrity": "sha512-gv3ZRaISU3fjPAgNsriBRqGWQL6quFx04YMPW/zD8XMLsU32mhCCbfbO6KZFLjvYpCZ8zyDEgqsgf+PwPaM7GQ==",
       "dev": true
     },
     "node_modules/@jridgewell/trace-mapping": {
@@ -3161,6 +3161,12 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/estree": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.5.tgz",
+      "integrity": "sha512-/kYRxGDLWzHOB7q+wtSUQlFrtcdUccpfy+X+9iMBpHK8QLLhx2wIPYuS5DYtR9Wa/YlZAbIovy7qVdB1Aq6Lyw==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/@types/express/-/express-4.17.17.tgz",
@@ -4158,6 +4164,15 @@
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+    "node_modules/axobject-query": {
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+      "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-4.1.0.tgz",
+      "integrity": "sha512-qIj0G9wZbMGNLjLmg1PT6v2mE9AH2zlnADJD/2tC6E00hgmhUOfEB6greHPAfLRSufHqROIUTkw6E+M3lH0PTQ==",
+      "dev": true,
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-29.6.1.tgz",
@@ -4848,6 +4863,19 @@
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+    "node_modules/code-red": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/code-red/-/code-red-1.0.4.tgz",
+      "integrity": "sha512-7qJWqItLA8/VPVlKJlFXU+NBlo/qyfs39aJcuMT/2ere32ZqvF5OSxgdM5xOfJJ7O429gg2HM47y8v9P+9wrNw==",
+      "dev": true,
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.4.15",
+        "@types/estree": "^1.0.1",
+        "acorn": "^8.10.0",
+        "estree-walker": "^3.0.3",
+        "periscopic": "^3.1.0"
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@@ -4962,6 +4990,19 @@
         "node": ">= 8"
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+    "node_modules/css-tree": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.3.1.tgz",
+      "integrity": "sha512-6Fv1DV/TYw//QF5IzQdqsNDjx/wc8TrMBZsqjL9eW01tWb7R7k/mq+/VXfJCl7SoD5emsJop9cOByJZfs8hYIw==",
+      "dev": true,
+      "dependencies": {
+        "mdn-data": "2.0.30",
+        "source-map-js": "^1.0.1"
+      },
+      "engines": {
+        "node": "^10 || ^12.20.0 || ^14.13.0 || >=15.0.0"
+      }
+    },
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       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-3.0.0.tgz",
@@ -5175,6 +5216,15 @@
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+    "node_modules/dequal": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/dequal/-/dequal-2.0.3.tgz",
+      "integrity": "sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==",
+      "dev": true,
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/destroy": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.2.0.tgz",
@@ -6205,6 +6255,15 @@
         "node": ">=4.0"
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+    "node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
+      "integrity": "sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==",
+      "dev": true,
+      "dependencies": {
+        "@types/estree": "^1.0.0"
+      }
+    },
     "node_modules/esutils": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.3.tgz",
@@ -7955,6 +8014,15 @@
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       "dev": true
     },
+    "node_modules/is-reference": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-3.0.2.tgz",
+      "integrity": "sha512-v3rht/LgVcsdZa3O2Nqs+NMowLOxeOm7Ay9+/ARQ2F+qEoANRcqrjAZKGN0v8ymUetZGgkp26LTnGT7H0Qo9Pg==",
+      "dev": true,
+      "dependencies": {
+        "@types/estree": "*"
+      }
+    },
     "node_modules/is-regex": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.4.tgz",
@@ -9554,6 +9622,12 @@
         "url": "https://github.com/sponsors/antfu"
       }
     },
+    "node_modules/locate-character": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/locate-character/-/locate-character-3.0.0.tgz",
+      "integrity": "sha512-SW13ws7BjaeJ6p7Q6CO2nchbYEc3X3J6WrmTTDto7yMPqVSZTUyY5Tjbid+Ab8gLnATtygYtiDIJGQRRn2ZOiA==",
+      "dev": true
+    },
     "node_modules/locate-path": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-6.0.0.tgz",
@@ -9657,15 +9731,12 @@
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     "node_modules/magic-string": {
-      "version": "0.30.1",
-      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.1.tgz",
-      "integrity": "sha512-mbVKXPmS0z0G4XqFDCTllmDQ6coZzn94aMlb0o/A4HEHJCKcanlDZwYJgwnkmgD3jyWhUgj9VsPrfd972yPffA==",
+      "version": "0.30.11",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.11.tgz",
+      "integrity": "sha512-+Wri9p0QHMy+545hKww7YAu5NyzF8iomPL/RQazugQ9+Ez4Ic3mERMd8ZTX5rfK944j+560ZJi8iAwgak1Ac7A==",
       "dev": true,
       "dependencies": {
-        "@jridgewell/sourcemap-codec": "^1.4.15"
-      },
-      "engines": {
-        "node": ">=12"
+        "@jridgewell/sourcemap-codec": "^1.5.0"
       }
     },
     "node_modules/make-dir": {
@@ -9737,6 +9808,12 @@
         "node": ">=0.12.0"
       }
     },
+    "node_modules/mdn-data": {
+      "version": "2.0.30",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.30.tgz",
+      "integrity": "sha512-GaqWWShW4kv/G9IEucWScBx9G1/vsFZZJUO+tD26M8J8z3Kw5RDQjaoZe03YAClgeS/SWPOcb4nkFBTEi5DUEA==",
+      "dev": true
+    },
     "node_modules/mdurl": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/mdurl/-/mdurl-1.0.1.tgz",
@@ -10407,6 +10484,17 @@
         "url": "https://github.com/sponsors/Borewit"
       }
     },
+    "node_modules/periscopic": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/periscopic/-/periscopic-3.1.0.tgz",
+      "integrity": "sha512-vKiQ8RRtkl9P+r/+oefh25C3fhybptkHKCZSPlcXiJux2tJF55GnEj3BVn4A5gKfq9NWWXXrxkHBwVPUfH0opw==",
+      "dev": true,
+      "dependencies": {
+        "@types/estree": "^1.0.0",
+        "estree-walker": "^3.0.0",
+        "is-reference": "^3.0.0"
+      }
+    },
     "node_modules/picocolors": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
@@ -11893,12 +11981,28 @@
       }
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     "node_modules/svelte": {
-      "version": "3.59.2",
-      "resolved": "https://registry.npmjs.org/svelte/-/svelte-3.59.2.tgz",
-      "integrity": "sha512-vzSyuGr3eEoAtT/A6bmajosJZIUWySzY2CzB3w2pgPvnkUjGqlDnsNnA0PMO+mMAhuyMul6C2uuZzY6ELSkzyA==",
+      "version": "4.2.19",
+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-4.2.19.tgz",
+      "integrity": "sha512-IY1rnGr6izd10B0A8LqsBfmlT5OILVuZ7XsI0vdGPEvuonFV7NYEUK4dAkm9Zg2q0Um92kYjTpS1CAP3Nh/KWw==",
       "dev": true,
+      "dependencies": {
+        "@ampproject/remapping": "^2.2.1",
+        "@jridgewell/sourcemap-codec": "^1.4.15",
+        "@jridgewell/trace-mapping": "^0.3.18",
+        "@types/estree": "^1.0.1",
+        "acorn": "^8.9.0",
+        "aria-query": "^5.3.0",
+        "axobject-query": "^4.0.0",
+        "code-red": "^1.0.3",
+        "css-tree": "^2.3.1",
+        "estree-walker": "^3.0.3",
+        "is-reference": "^3.0.1",
+        "locate-character": "^3.0.0",
+        "magic-string": "^0.30.4",
+        "periscopic": "^3.1.0"
+      },
       "engines": {
-        "node": ">= 8"
+        "node": ">=16"
       }
     },
     "node_modules/svelte-check": {
@@ -12036,6 +12140,15 @@
         "node": ">=12"
       }
     },
+    "node_modules/svelte/node_modules/aria-query": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-5.3.0.tgz",
+      "integrity": "sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A==",
+      "dev": true,
+      "dependencies": {
+        "dequal": "^2.0.3"
+      }
+    },
     "node_modules/symbol-tree": {
       "version": "3.2.4",
       "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
diff --git a/package.json b/package.json
index acbf7ae..ed24497 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "firebaseui": "^6.0.2",
     "jsdom": "^22.1.0",
     "prettier": "^2.8.1",
-    "svelte": "^3.59.2",
+    "svelte": "^4.2.19",
     "svelte-check": "^3.4.6",
     "svelte-jester": "^3.0.0",
     "svelte-preprocess": "^5.0.4",