diff --git a/package-lock.json b/package-lock.json
index 0ada11bf..c19b29b6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -75,7 +75,7 @@
         "smoldash": "0.11.0",
         "svelte": "3.59.1",
         "svelte-preprocess": "5.0.4",
-        "typescript": "5.1.6",
+        "typescript": "5.5.3",
         "vue": "3.3.4"
       },
       "engines": {
@@ -16862,10 +16862,11 @@
       "dev": true
     },
     "node_modules/typescript": {
-      "version": "5.1.6",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.6.tgz",
-      "integrity": "sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==",
+      "version": "5.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.3.tgz",
+      "integrity": "sha512-/hreyEujaB0w76zKo6717l3L0o/qEUtRgdvUBvlkhoWeOVMjMuHNHk0BRBzikzuGDqNmPQbg5ifMEqsHLiIUcQ==",
       "dev": true,
+      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
diff --git a/package.json b/package.json
index b7cb0bf2..fc5289d0 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "smoldash": "0.11.0",
     "svelte": "3.59.1",
     "svelte-preprocess": "5.0.4",
-    "typescript": "5.1.6",
+    "typescript": "5.5.3",
     "vue": "3.3.4"
   },
   "dependencies": {
diff --git a/src/extend-expect.ts b/src/extend-expect.ts
index c96ac92a..683608d9 100644
--- a/src/extend-expect.ts
+++ b/src/extend-expect.ts
@@ -225,7 +225,7 @@ const runJestUtilsInNode = (message: string, context: jest.MatcherContext) => {
   const closeRegex = /\$END_JEST_UTILS\$/g;
   let jestUtilsCall;
   while ((jestUtilsCall = jestUtilsCalls.pop())) {
-    const start = jestUtilsCall.index!;
+    const start = jestUtilsCall.index;
     const methodName = jestUtilsCall[1];
     closeRegex.lastIndex = start;
     const closeIndex = closeRegex.exec(message)?.index;
diff --git a/tests/utils/runJS.test.tsx b/tests/utils/runJS.test.tsx
index cd5bc5bc..32a3951c 100644
--- a/tests/utils/runJS.test.tsx
+++ b/tests/utils/runJS.test.tsx
@@ -494,8 +494,12 @@ describe('Ecosystem interoperability', () => {
           plugins: [
             sveltePlugin({
               preprocess: sveltePreprocess({
-                // Does not work with module set to nodenext, works with either commonjs or esnext
-                typescript: { compilerOptions: { module: 'commonjs' } },
+                typescript: {
+                  compilerOptions: {
+                    module: 'preserve',
+                    moduleResolution: 'bundler',
+                  },
+                },
               }),
             }),
           ],