Update a bunch of libraries to typescript

svelte/package.json

@@ -13,6 +13,7 @@
     "@rollup/plugin-commonjs": "^25.0.0",
     "@rollup/plugin-node-resolve": "^15.2.1",
     "@rollup/plugin-terser": "^0.4.3",
+    "@rollup/plugin-typescript": "^11.1.6",
     "@types/jsmediatags": "^3.9.3",
     "rollup": "^3.0.0",
     "rollup-plugin-livereload": "^2.0.0",
@@ -22,6 +23,7 @@
   "dependencies": {
     "behave-js": "^1.5.0",
     "chart.js": "^4.2.0",
-    "pure-color": "^1.3.0"
+    "pure-color": "^1.3.0",
+    "tslib": "^2.7.0"
   }
 }