diff --git a/Probe/Tests/__mocks__/isolated-vm.ts b/Probe/Tests/__mocks__/isolated-vm.ts
new file mode 100644
index 0000000000..a8952b4687
--- /dev/null
+++ b/Probe/Tests/__mocks__/isolated-vm.ts
@@ -0,0 +1,57 @@
+// Mock for isolated-vm native module (not loadable in Jest)
+export class Isolate {
+  public isDisposed: boolean = false;
+  public async createContext(): Promise<Context> {
+    return new Context();
+  }
+  public dispose(): void {
+    this.isDisposed = true;
+  }
+}
+
+export class Context {
+  public global: Reference = new Reference();
+  public async eval(_code: string, _options?: unknown): Promise<unknown> {
+    return undefined;
+  }
+}
+
+export class Reference {
+  public async set(_key: string, _value: unknown): Promise<void> {
+    return;
+  }
+  public derefInto(): unknown {
+    return {};
+  }
+  public applySync(
+    _receiver: unknown,
+    _args: unknown[],
+  ): unknown {
+    return undefined;
+  }
+  public applySyncPromise(
+    _receiver: unknown,
+    _args: unknown[],
+  ): Promise<unknown> {
+    return Promise.resolve(undefined);
+  }
+}
+
+export class Callback {
+  constructor(_fn: (...args: unknown[]) => void) {}
+}
+
+export class ExternalCopy {
+  constructor(_value: unknown) {}
+  public copyInto(): unknown {
+    return {};
+  }
+}
+
+export default {
+  Isolate,
+  Context,
+  Reference,
+  Callback,
+  ExternalCopy,
+};
diff --git a/Probe/Tests/__mocks__/whois-json.ts b/Probe/Tests/__mocks__/whois-json.ts
new file mode 100644
index 0000000000..b89edc430e
--- /dev/null
+++ b/Probe/Tests/__mocks__/whois-json.ts
@@ -0,0 +1,6 @@
+// Mock for whois-json ESM module (not parseable by Jest)
+const whoisJson = async (_domain: string): Promise<Record<string, unknown>> => {
+  return {};
+};
+
+export default whoisJson;
diff --git a/Probe/jest.config.json b/Probe/jest.config.json
index 4ea0f190e9..96bea5c296 100644
--- a/Probe/jest.config.json
+++ b/Probe/jest.config.json
@@ -12,6 +12,10 @@
             "babelConfig": false
         }
     },
+    "moduleNameMapper": {
+        "isolated-vm": "<rootDir>/Tests/__mocks__/isolated-vm.ts",
+        "whois-json": "<rootDir>/Tests/__mocks__/whois-json.ts"
+    },
     "moduleFileExtensions": ["ts", "js", "json"],
     "transform": {
         ".(ts|tsx)": "ts-jest"