Add exportTo helper

browser/helpers.go

@@ -16,6 +16,18 @@ func panicIfFatalError(ctx context.Context, err error) {
 	}
 }
 
+// exportTo exports the Sobek value to a Go value.
+// It returns the zero value of T if obj does not exist in the Sobek runtime.
+// It's caller's responsibility to check for nilness.
+func exportTo[T any](rt *sobek.Runtime, obj sobek.Value) (T, error) {
+	var t T
+	if !sobekValueExists(obj) {
+		return t, nil
+	}
+	err := rt.ExportTo(obj, &t)
+	return t, err //nolint:wrapcheck
+}
+
 // exportArg exports the value and returns it.
 // It returns nil if the value is undefined or null.
 func exportArg(gv sobek.Value) any {

examples/geo.js

@@ -0,0 +1,23 @@
+import { browser } from 'k6/x/browser/async';
+import { check } from 'https://jslib.k6.io/k6-utils/1.5.0/index.js';
+
+export const options = {
+  scenarios: {
+    ui: {
+      executor: 'shared-iterations',
+      options: {
+        browser: {
+            type: 'chromium',
+        },
+      },
+    },
+  },
+  thresholds: {
+    checks: ["rate==1.0"]
+  }
+}
+
+export default async function() {
+  const context = await browser.newContext();
+  await context.setGeolocation({ latitude: 37.7749, slongitude: -122.4194, accuracy: 1 });
+}