diff --git a/sapper/package-lock.json b/sapper/package-lock.json
index 4aafff4d..c3da2577 100644
--- a/sapper/package-lock.json
+++ b/sapper/package-lock.json
@@ -224,6 +224,12 @@
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       }
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+      "resolved": "https://registry.npmjs.org/@babel/helper-globals/-/helper-globals-7.28.0.tgz",
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+      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.27.1.tgz",
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       "dev": true,
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-        "@babel/types": "^7.10.4"
+        "@babel/traverse": "^7.27.1",
+        "@babel/types": "^7.27.1"
+      },
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+          "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
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+          "dev": true,
+          "requires": {
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+            "js-tokens": "^4.0.0",
+            "picocolors": "^1.1.1"
+          }
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+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.28.5.tgz",
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+          "dev": true,
+          "requires": {
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+            "@babel/types": "^7.28.5",
+            "@jridgewell/gen-mapping": "^0.3.12",
+            "@jridgewell/trace-mapping": "^0.3.28",
+            "jsesc": "^3.0.2"
+          }
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+          "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.28.5.tgz",
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+          "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.28.5.tgz",
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+          "requires": {
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+            "@babel/generator": "^7.28.5",
+            "@babel/helper-globals": "^7.28.0",
+            "@babel/parser": "^7.28.5",
+            "@babel/template": "^7.27.2",
+            "@babel/types": "^7.28.5",
+            "debug": "^4.3.1"
+          }
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+        "@babel/types": {
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+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.28.5.tgz",
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+          "dev": true,
+          "requires": {
+            "@babel/helper-string-parser": "^7.27.1",
+            "@babel/helper-validator-identifier": "^7.28.5"
+          }
+        },
+        "debug": {
+          "version": "4.4.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
+          "integrity": "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.3"
+          }
+        },
+        "jsesc": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-3.1.0.tgz",
+          "integrity": "sha512-/sM3dO2FOzXjKQhJuo0Q173wf2KOo8t4I8vHy6lF9poUp7bKT0/NHE8fPX23PwfhnykfqnC2xRxOnVw5XuGIaA==",
+          "dev": true
+        },
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
+          "dev": true
+        }
       }
     },
     "@babel/helper-module-transforms": {
@@ -527,6 +632,12 @@
         "@babel/types": "^7.11.0"
       }
     },
+    "@babel/helper-string-parser": {
+      "version": "7.27.1",
+      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.27.1.tgz",
+      "integrity": "sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==",
+      "dev": true
+    },
     "@babel/helper-validator-identifier": {
       "version": "7.10.4",
       "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz",
@@ -1601,6 +1712,38 @@
         "purgecss": "^2.3.0"
       }
     },
+    "@jridgewell/gen-mapping": {
+      "version": "0.3.13",
+      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
+      "integrity": "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==",
+      "dev": true,
+      "requires": {
+        "@jridgewell/sourcemap-codec": "^1.5.0",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      }
+    },
+    "@jridgewell/resolve-uri": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
+      "integrity": "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==",
+      "dev": true
+    },
+    "@jridgewell/sourcemap-codec": {
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz",
+      "integrity": "sha512-cYQ9310grqxueWbl+WuIUIaiUaDcj7WOq5fVhEljNVgRfOUhY9fy2zTvfoqWsnebh8Sl70VScFbICvJnLKB0Og==",
+      "dev": true
+    },
+    "@jridgewell/trace-mapping": {
+      "version": "0.3.31",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.31.tgz",
+      "integrity": "sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==",
+      "dev": true,
+      "requires": {
+        "@jridgewell/resolve-uri": "^3.1.0",
+        "@jridgewell/sourcemap-codec": "^1.4.14"
+      }
+    },
     "@nodelib/fs.scandir": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.3.tgz",
@@ -1633,13 +1776,44 @@
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     },
     "@rollup/plugin-babel": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/@rollup/plugin-babel/-/plugin-babel-5.2.1.tgz",
-      "integrity": "sha512-Jd7oqFR2dzZJ3NWANDyBjwTtX/lYbZpVcmkHrfQcpvawHs9E4c0nYk5U2mfZ6I/DZcIvy506KZJi54XK/jxH7A==",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-babel/-/plugin-babel-6.1.0.tgz",
+      "integrity": "sha512-dFZNuFD2YRcoomP4oYf+DvQNSUA9ih+A3vUqopQx5EdtPGo3WBnQcI/S8pwpz91UsGfL0HsMSOlaMld8HrbubA==",
       "dev": true,
       "requires": {
-        "@babel/helper-module-imports": "^7.10.4",
-        "@rollup/pluginutils": "^3.1.0"
+        "@babel/helper-module-imports": "^7.18.6",
+        "@rollup/pluginutils": "^5.0.1"
+      },
+      "dependencies": {
+        "@rollup/pluginutils": {
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-5.3.0.tgz",
+          "integrity": "sha512-5EdhGZtnu3V88ces7s53hhfK5KSASnJZv8Lulpc04cWO3REESroJXg73DFsOmgbU2BhwV0E20bu2IDZb3VKW4Q==",
+          "dev": true,
+          "requires": {
+            "@types/estree": "^1.0.0",
+            "estree-walker": "^2.0.2",
+            "picomatch": "^4.0.2"
+          }
+        },
+        "@types/estree": {
+          "version": "1.0.8",
+          "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
+          "integrity": "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w==",
+          "dev": true
+        },
+        "estree-walker": {
+          "version": "2.0.2",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz",
+          "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==",
+          "dev": true
+        },
+        "picomatch": {
+          "version": "4.0.3",
+          "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
+          "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+          "dev": true
+        }
       }
     },
     "@rollup/plugin-commonjs": {
@@ -4763,6 +4937,12 @@
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=",
       "optional": true
     },
+    "picocolors": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
+      "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==",
+      "dev": true
+    },
     "picomatch": {
       "version": "2.2.2",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
@@ -4782,12 +4962,19 @@
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     "polka": {
-      "version": "1.0.0-next.11",
-      "resolved": "https://registry.npmjs.org/polka/-/polka-1.0.0-next.11.tgz",
-      "integrity": "sha512-M/HBkS6ILksrDq7uvktCTev81OzuLwNtpxMyYdUhxLKQlMWdsu789XMotQU+p8JY8CM8vx8ML0HudyWjRus/lg==",
+      "version": "1.0.0-next.28",
+      "resolved": "https://registry.npmjs.org/polka/-/polka-1.0.0-next.28.tgz",
+      "integrity": "sha512-ryc8D/B5E/YnlWHkNMnRvNntPc4GwU1/+iDBjiXVz1SUjDRqlxYX5Ic0IaDLA/cQ+g7/x+jUzEjv2K16u1J+wA==",
       "requires": {
-        "@polka/url": "^1.0.0-next.11",
-        "trouter": "^3.1.0"
+        "@polka/url": "^1.0.0-next.21",
+        "trouter": "^4.0.0"
+      },
+      "dependencies": {
+        "@polka/url": {
+          "version": "1.0.0-next.29",
+          "resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.29.tgz",
+          "integrity": "sha512-wwQAWhWSuHaag8c4q/KN/vCoeOJYshAIvMQwD4GpSb3OiZklFfvAgmj0VCBBImRpuF/aFgIRzllXlVX93Jevww=="
+        }
       }
     },
     "postcss": {
@@ -5262,9 +5449,9 @@
       }
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     "regexparam": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/regexparam/-/regexparam-1.3.0.tgz",
-      "integrity": "sha512-6IQpFBv6e5vz1QAqI+V4k8P2e/3gRrqfCJ9FI+O1FLQTO+Uz6RXZEZOPmTJ6hlGj7gkERzY5BRCv09whKP96/g=="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/regexparam/-/regexparam-3.0.0.tgz",
+      "integrity": "sha512-RSYAtP31mvYLkAHrOlh25pCNQ5hWnT106VukGaaFfuJrZFkGRX5GhUAdPqpSDXxOhA2c4akmRuplv1mRqnBn6Q=="
     },
     "regexpp": {
       "version": "3.1.0",
@@ -6026,11 +6213,11 @@
       }
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     "trouter": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/trouter/-/trouter-3.1.0.tgz",
-      "integrity": "sha512-3Swwu638QQWOefHLss9cdyLi5/9BKYmXZEXpH0KOFfB9YZwUAwHbDAcoYxaHfqAeFvbi/LqAK7rGkhCr1v1BJA==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/trouter/-/trouter-4.0.0.tgz",
+      "integrity": "sha512-bwwr76BThfiVwAFZqks5cJ+VoKNM3/2Yg1ZwJslkdmAUQ6S0UNoCoGYFDxdw+u1skfexggdmD2p35kW5Td4Cug==",
       "requires": {
-        "regexparam": "^1.3.0"
+        "regexparam": "^3.0.0"
       }
     },
     "tslib": {
diff --git a/sapper/package.json b/sapper/package.json
index 716983b2..61eb754b 100644
--- a/sapper/package.json
+++ b/sapper/package.json
@@ -30,7 +30,7 @@
     "@babel/plugin-transform-runtime": "7.12.1",
     "@babel/preset-env": "7.12.1",
     "@babel/runtime": "7.12.5",
-    "@rollup/plugin-babel": "5.2.1",
+    "@rollup/plugin-babel": "6.1.0",
     "@rollup/plugin-commonjs": "14.0.0",
     "@rollup/plugin-node-resolve": "8.4.0",
     "@rollup/plugin-replace": "2.3.4",