diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dbc2aed1c..5355fb435 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -56,7 +56,10 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install graphviz
-          npm install
+          # legacy peer deps because otherwise typescript-eslint hard-complains
+          # as it can't find a suitable typescript compiler (we're on 6 now, 
+          # ts-eslint isn't yet)
+          npm install --legacy-peer-deps
           npm run build
       - name: lint (run on node ${{env.NODE_LATEST}} only)
         if: matrix.node-version == env.NODE_LATEST
@@ -116,7 +119,10 @@ jobs:
       - name: install & build
         run: |
           choco install graphviz
-          npm install
+          # legacy peer deps because otherwise typescript-eslint hard-complains
+          # as it can't find a suitable typescript compiler (we're on 6 now, 
+          # ts-eslint isn't yet)
+          npm install --legacy-peer-deps
           npm run build
       - run: npm run depcruise
       - run: npx mocha --invert --fgrep "#do-not-run-on-windows"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 46c5394d0..53a064df6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,10 @@ jobs:
         with:
           node-version: 24.x
           registry-url: https://registry.npmjs.org
-      - run: npm clean-install
+      # legacy peer deps because otherwise typescript-eslint hard-complains
+      # as it can't find a suitable typescript compiler (we're on 6 now, 
+      # ts-eslint isn't yet)
+      - run: npm clean-install --legacy-peer-deps
       - name: publish as latest
         run: npm publish --provenance --access public
         if: github.event.release.prerelease == false
diff --git a/package-lock.json b/package-lock.json
index 3fa900bf6..c0e327acf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -74,7 +74,7 @@
         "svelte": "5.53.7",
         "svgo": "4.0.0",
         "symlink-dir": "^7.1.0",
-        "typescript": "5.9.3",
+        "typescript": "6.0.0-beta",
         "upem": "10.0.4",
         "vue-template-compiler": "2.7.16",
         "yarn": "1.22.22"
@@ -1703,16 +1703,18 @@
         "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/parser": {
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/type-utils": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.56.1.tgz",
+      "integrity": "sha512-yB/7dxi7MgTtGhZdaHCemf7PuwrHMenHjmzgUW1aJpO+bBU43OycnM3Wn+DdvDO/8zzA9HlhaJ0AUGuvri4oGg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/scope-manager": "8.56.1",
         "@typescript-eslint/types": "8.56.1",
         "@typescript-eslint/typescript-estree": "8.56.1",
-        "@typescript-eslint/visitor-keys": "8.56.1",
-        "debug": "^4.4.3"
+        "@typescript-eslint/utils": "8.56.1",
+        "debug": "^4.4.3",
+        "ts-api-utils": "^2.4.0"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -1726,8 +1728,38 @@
         "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/project-service": {
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/type-utils/node_modules/@typescript-eslint/typescript-estree": {
+      "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.56.1.tgz",
+      "integrity": "sha512-qzUL1qgalIvKWAf9C1HpvBjif+Vm6rcT5wZd4VoMb9+Km3iS3Cv9DY6dMRMDtPnwRAFyAi7YXJpTIEXLvdfPxg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/project-service": "8.56.1",
+        "@typescript-eslint/tsconfig-utils": "8.56.1",
+        "@typescript-eslint/types": "8.56.1",
+        "@typescript-eslint/visitor-keys": "8.56.1",
+        "debug": "^4.4.3",
+        "minimatch": "^10.2.2",
+        "semver": "^7.7.3",
+        "tinyglobby": "^0.2.15",
+        "ts-api-utils": "^2.4.0"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/type-utils/node_modules/@typescript-eslint/typescript-estree/node_modules/@typescript-eslint/project-service": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.56.1.tgz",
+      "integrity": "sha512-TAdqQTzHNNvlVFfR+hu2PDJrURiwKsUvxFn1M0h95BB8ah5jejas08jUWG4dBA68jDMI988IvtfdAI53JzEHOQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -1746,26 +1778,35 @@
         "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/scope-manager": {
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/type-utils/node_modules/@typescript-eslint/typescript-estree/node_modules/@typescript-eslint/tsconfig-utils": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.56.1.tgz",
+      "integrity": "sha512-qOtCYzKEeyr3aR9f28mPJqBty7+DBqsdd63eO0yyDwc6vgThj2UjWfJIcsFeSucYydqcuudMOprZ+x1SpF3ZuQ==",
       "dev": true,
       "license": "MIT",
-      "dependencies": {
-        "@typescript-eslint/types": "8.56.1",
-        "@typescript-eslint/visitor-keys": "8.56.1"
-      },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/tsconfig-utils": {
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/utils": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.56.1.tgz",
+      "integrity": "sha512-HPAVNIME3tABJ61siYlHzSWCGtOoeP2RTIaHXFMPqjrQKCGB9OgUVdiNgH7TJS2JNIQ5qQ4RsAUDuGaGme/KOA==",
       "dev": true,
       "license": "MIT",
+      "dependencies": {
+        "@eslint-community/eslint-utils": "^4.9.1",
+        "@typescript-eslint/scope-manager": "8.56.1",
+        "@typescript-eslint/types": "8.56.1",
+        "@typescript-eslint/typescript-estree": "8.56.1"
+      },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
@@ -1774,18 +1815,25 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
         "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/type-utils": {
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/utils/node_modules/@typescript-eslint/typescript-estree": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.56.1.tgz",
+      "integrity": "sha512-qzUL1qgalIvKWAf9C1HpvBjif+Vm6rcT5wZd4VoMb9+Km3iS3Cv9DY6dMRMDtPnwRAFyAi7YXJpTIEXLvdfPxg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
+        "@typescript-eslint/project-service": "8.56.1",
+        "@typescript-eslint/tsconfig-utils": "8.56.1",
         "@typescript-eslint/types": "8.56.1",
-        "@typescript-eslint/typescript-estree": "8.56.1",
-        "@typescript-eslint/utils": "8.56.1",
+        "@typescript-eslint/visitor-keys": "8.56.1",
         "debug": "^4.4.3",
+        "minimatch": "^10.2.2",
+        "semver": "^7.7.3",
+        "tinyglobby": "^0.2.15",
         "ts-api-utils": "^2.4.0"
       },
       "engines": {
@@ -1796,24 +1844,127 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
         "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/types": {
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/utils/node_modules/@typescript-eslint/typescript-estree/node_modules/@typescript-eslint/project-service": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.56.1.tgz",
+      "integrity": "sha512-TAdqQTzHNNvlVFfR+hu2PDJrURiwKsUvxFn1M0h95BB8ah5jejas08jUWG4dBA68jDMI988IvtfdAI53JzEHOQ==",
       "dev": true,
       "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/tsconfig-utils": "^8.56.1",
+        "@typescript-eslint/types": "^8.56.1",
+        "debug": "^4.4.3"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/@typescript-eslint/utils/node_modules/@typescript-eslint/typescript-estree/node_modules/@typescript-eslint/tsconfig-utils": {
+      "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.56.1.tgz",
+      "integrity": "sha512-qOtCYzKEeyr3aR9f28mPJqBty7+DBqsdd63eO0yyDwc6vgThj2UjWfJIcsFeSucYydqcuudMOprZ+x1SpF3ZuQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/balanced-match": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
+      "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/brace-expansion": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.4.tgz",
+      "integrity": "sha512-h+DEnpVvxmfVefa4jFbCf5HdH5YMDXRsmKflpf1pILZWRFlTbJpxeU55nJl4Smt5HQaGzg1o6RHFPJaOqnmBDg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/minimatch": {
+      "version": "10.2.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.4.tgz",
+      "integrity": "sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "brace-expansion": "^5.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/ts-api-utils": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.4.0.tgz",
+      "integrity": "sha512-3TaVTaAv2gTiMB35i3FiGJaRfwb3Pyn/j3m/bfAvGe8FB7CF6u+LMYqYlDh7reQf7UNvoTvdfAqHGmPGOSsPmA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
+    "node_modules/@typescript-eslint/parser": {
+      "version": "8.56.1",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/scope-manager": "8.56.1",
+        "@typescript-eslint/types": "8.56.1",
+        "@typescript-eslint/typescript-estree": "8.56.1",
+        "@typescript-eslint/visitor-keys": "8.56.1",
+        "debug": "^4.4.3"
+      },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
+        "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/typescript-estree": {
+    "node_modules/@typescript-eslint/parser/node_modules/@typescript-eslint/typescript-estree": {
       "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.56.1.tgz",
+      "integrity": "sha512-qzUL1qgalIvKWAf9C1HpvBjif+Vm6rcT5wZd4VoMb9+Km3iS3Cv9DY6dMRMDtPnwRAFyAi7YXJpTIEXLvdfPxg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -1838,16 +1989,72 @@
         "typescript": ">=4.8.4 <6.0.0"
       }
     },
-    "node_modules/@typescript-eslint/typescript-estree/node_modules/balanced-match": {
+    "node_modules/@typescript-eslint/parser/node_modules/@typescript-eslint/typescript-estree/node_modules/@typescript-eslint/project-service": {
+      "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.56.1.tgz",
+      "integrity": "sha512-TAdqQTzHNNvlVFfR+hu2PDJrURiwKsUvxFn1M0h95BB8ah5jejas08jUWG4dBA68jDMI988IvtfdAI53JzEHOQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/tsconfig-utils": "^8.56.1",
+        "@typescript-eslint/types": "^8.56.1",
+        "debug": "^4.4.3"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/parser/node_modules/@typescript-eslint/typescript-estree/node_modules/@typescript-eslint/tsconfig-utils": {
+      "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.56.1.tgz",
+      "integrity": "sha512-qOtCYzKEeyr3aR9f28mPJqBty7+DBqsdd63eO0yyDwc6vgThj2UjWfJIcsFeSucYydqcuudMOprZ+x1SpF3ZuQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/parser/node_modules/@typescript-eslint/typescript-estree/node_modules/ts-api-utils": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.4.0.tgz",
+      "integrity": "sha512-3TaVTaAv2gTiMB35i3FiGJaRfwb3Pyn/j3m/bfAvGe8FB7CF6u+LMYqYlDh7reQf7UNvoTvdfAqHGmPGOSsPmA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
+    "node_modules/@typescript-eslint/parser/node_modules/balanced-match": {
       "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
+      "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
       "dev": true,
       "license": "MIT",
       "engines": {
         "node": "18 || 20 || >=22"
       }
     },
-    "node_modules/@typescript-eslint/typescript-estree/node_modules/brace-expansion": {
-      "version": "5.0.3",
+    "node_modules/@typescript-eslint/parser/node_modules/brace-expansion": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.4.tgz",
+      "integrity": "sha512-h+DEnpVvxmfVefa4jFbCf5HdH5YMDXRsmKflpf1pILZWRFlTbJpxeU55nJl4Smt5HQaGzg1o6RHFPJaOqnmBDg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -1857,7 +2064,7 @@
         "node": "18 || 20 || >=22"
       }
     },
-    "node_modules/@typescript-eslint/typescript-estree/node_modules/minimatch": {
+    "node_modules/@typescript-eslint/parser/node_modules/minimatch": {
       "version": "10.2.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.4.tgz",
       "integrity": "sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==",
@@ -1873,15 +2080,13 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
-    "node_modules/@typescript-eslint/utils": {
+    "node_modules/@typescript-eslint/scope-manager": {
       "version": "8.56.1",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@eslint-community/eslint-utils": "^4.9.1",
-        "@typescript-eslint/scope-manager": "8.56.1",
         "@typescript-eslint/types": "8.56.1",
-        "@typescript-eslint/typescript-estree": "8.56.1"
+        "@typescript-eslint/visitor-keys": "8.56.1"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -1889,10 +2094,18 @@
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/typescript-eslint"
+      }
+    },
+    "node_modules/@typescript-eslint/types": {
+      "version": "8.56.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
-      "peerDependencies": {
-        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
-        "typescript": ">=4.8.4 <6.0.0"
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
       }
     },
     "node_modules/@typescript-eslint/visitor-keys": {
@@ -3640,6 +3853,44 @@
         "node": ">= 4"
       }
     },
+    "node_modules/eslint-plugin-n/node_modules/ts-declaration-location": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/ts-declaration-location/-/ts-declaration-location-1.0.7.tgz",
+      "integrity": "sha512-EDyGAwH1gO0Ausm9gV6T2nUvBgXT5kGoCMJPllOaooZ+4VvJiKBdZE7wK18N1deEowhcUptS+5GXZK8U/fvpwA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "ko-fi",
+          "url": "https://ko-fi.com/rebeccastevens"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/ts-declaration-location"
+        }
+      ],
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "picomatch": "^4.0.2"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.0.0"
+      }
+    },
+    "node_modules/eslint-plugin-n/node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "peer": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
     "node_modules/eslint-plugin-security": {
       "version": "4.0.0",
       "dev": true,
@@ -3907,6 +4158,8 @@
     },
     "node_modules/fdir": {
       "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
+      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -6861,6 +7114,8 @@
     },
     "node_modules/tinyglobby": {
       "version": "0.2.15",
+      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.15.tgz",
+      "integrity": "sha512-j2Zq4NyQYG5XMST4cbs02Ak8iJUdxRM0XI5QyxXuZOzKOINmWurp3smXu3y5wDcJrptwpSjgXHzIQxR0omXljQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -6885,38 +7140,6 @@
         "node": ">=8.0"
       }
     },
-    "node_modules/ts-api-utils": {
-      "version": "2.4.0",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=18.12"
-      },
-      "peerDependencies": {
-        "typescript": ">=4.8.4"
-      }
-    },
-    "node_modules/ts-declaration-location": {
-      "version": "1.0.7",
-      "dev": true,
-      "funding": [
-        {
-          "type": "ko-fi",
-          "url": "https://ko-fi.com/rebeccastevens"
-        },
-        {
-          "type": "tidelift",
-          "url": "https://tidelift.com/funding/github/npm/ts-declaration-location"
-        }
-      ],
-      "license": "BSD-3-Clause",
-      "dependencies": {
-        "picomatch": "^4.0.2"
-      },
-      "peerDependencies": {
-        "typescript": ">=4.0.0"
-      }
-    },
     "node_modules/tsconfig-paths": {
       "version": "3.15.0",
       "dev": true,
@@ -7054,7 +7277,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.9.3",
+      "version": "6.0.0-beta",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.0-beta.tgz",
+      "integrity": "sha512-CldZdztDpQRLM1HC6WDQjQkQN5Ub5zRau737a1diGh3lPmb9oRsaWHk1y5iqK0o7+1bNJ0oXfEGRkAogFZBL+Q==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index 1b5e7e3ed..c34d24095 100644
--- a/package.json
+++ b/package.json
@@ -268,7 +268,7 @@
     "svelte": "5.53.7",
     "svgo": "4.0.0",
     "symlink-dir": "^7.1.0",
-    "typescript": "5.9.3",
+    "typescript": "6.0.0-beta",
     "upem": "10.0.4",
     "vue-template-compiler": "2.7.16",
     "yarn": "1.22.22"
@@ -360,8 +360,8 @@
     "livescript": ">=1.0.0 <2.0.0",
     "svelte": ">=3.0.0 <6.0.0",
     "swc": ">=1.0.0 <2.0.0",
-    "typescript": ">=2.0.0 <6.0.0",
+    "typescript": ">=2.0.0 <7.0.0",
     "vue-template-compiler": ">=2.0.0 <3.0.0",
     "@vue/compiler-sfc": ">=3.0.0 <4.0.0"
   }
-}
\ No newline at end of file
+}
diff --git a/src/meta.cjs b/src/meta.cjs
index 4569a1c79..600225b4f 100644
--- a/src/meta.cjs
+++ b/src/meta.cjs
@@ -11,7 +11,7 @@ module.exports = {
     livescript: ">=1.0.0 <2.0.0",
     svelte: ">=3.0.0 <6.0.0",
     swc: ">=1.0.0 <2.0.0",
-    typescript: ">=2.0.0 <6.0.0",
+    typescript: ">=2.0.0 <7.0.0",
     "vue-template-compiler": ">=2.0.0 <3.0.0",
     "@vue/compiler-sfc": ">=3.0.0 <4.0.0",
   },
diff --git a/test/extract/transpile/svelte-preprocess.spec.mjs b/test/extract/transpile/svelte-preprocess.spec.mjs
index bcedf100c..14b986572 100644
--- a/test/extract/transpile/svelte-preprocess.spec.mjs
+++ b/test/extract/transpile/svelte-preprocess.spec.mjs
@@ -66,7 +66,8 @@ describe("[U] sync svelte pre-processor", () => {
       <button on:click={increment}>
         count is {count}
       </button>`;
-    const lExpected = `<script lang="ts">console.log(713);
+    const lExpected = `<script lang="ts">"use strict";
+console.log(713);
 </script>
       
       <button on:click={increment}>