chore: Svelte 4 dependency upgrades (#8486)

package.json

@@ -130,26 +130,26 @@
     "@rollup/plugin-virtual": "^3.0.1",
     "@sveltejs/eslint-config": "github:sveltejs/eslint-config#v5.8.0",
     "@types/aria-query": "^5.0.1",
-    "@types/mocha": "^7.0.0",
-    "@types/node": "^8.10.53",
-    "@typescript-eslint/eslint-plugin": "^5.29.0",
-    "@typescript-eslint/parser": "^5.29.0",
-    "acorn": "^8.8.1",
+    "@types/mocha": "^10.0.1",
+    "@types/node": "^14.14.31",
+    "@typescript-eslint/eslint-plugin": "^5.58.0",
+    "@typescript-eslint/parser": "^5.58.0",
+    "acorn": "^8.8.2",
     "agadoo": "^3.0.0",
     "aria-query": "^5.1.3",
     "axobject-query": "^3.1.1",
     "code-red": "^1.0.0",
     "css-tree": "^2.3.1",
     "eslint": "^8.35.0",
-    "eslint-plugin-import": "^2.27.0",
+    "eslint-plugin-import": "^2.27.5",
     "eslint-plugin-svelte3": "^4.0.0",
     "estree-walker": "^3.0.3",
     "is-reference": "^3.0.1",
-    "jsdom": "^15.2.1",
+    "jsdom": "^21.1.1",
     "kleur": "^4.1.5",
     "locate-character": "^2.0.5",
     "magic-string": "^0.30.0",
-    "mocha": "^7.0.0",
+    "mocha": "^10.2.0",
     "periscopic": "^3.1.0",
     "puppeteer": "^19.8.5",
     "rollup": "^1.27.14",

src/compiler/compile/nodes/shared/Expression.ts

@@ -24,7 +24,7 @@ type Owner = INode;
 const regex_contains_term_function_expression = /FunctionExpression/;
 
 export default class Expression {
-	type: 'Expression' = 'Expression';
+	type: 'Expression' = 'Expression' as const;
 	component: Component;
 	owner: Owner;
 	node: Node;