Add goja mappings to the module

With this, the browser module exposes api types to goja mappings to
users.

Author: inancgumus

browser/mapping.go

@@ -12,8 +12,6 @@ import (
 	k6modules "go.k6.io/k6/js/modules"
 )
 
-var _ = mapBrowserToGoja(nil)
-
 // mapping is a type of mapping between our API (api/) and the JS
 // module. It acts like a bridge and allows adding wildcard methods
 // and customization over our API.

browser/module.go

@@ -5,8 +5,8 @@ import (
 	"errors"
 	"os"
 
-	"github.com/grafana/xk6-browser/api"
-	"github.com/grafana/xk6-browser/chromium"
+	"github.com/dop251/goja"
+
 	"github.com/grafana/xk6-browser/common"
 
 	k6common "go.k6.io/k6/js/common"
@@ -22,7 +22,7 @@ type (
 
 	// JSModule exposes the properties available to the JS script.
 	JSModule struct {
-		Chromium api.BrowserType
+		Chromium *goja.Object
 		Devices  map[string]common.Device
 		Version  string
 	}
@@ -57,7 +57,7 @@ func (*RootModule) NewModuleInstance(vu k6modules.VU) k6modules.Instance {
 
 	return &ModuleInstance{
 		mod: &JSModule{
-			Chromium: chromium.NewBrowserType(vu),
+			Chromium: mapBrowserToGoja(vu),
 			Devices:  common.GetDevices(),
 			Version:  version,
 		},

browser/module_test.go

@@ -7,8 +7,6 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/grafana/xk6-browser/chromium"
-
 	k6common "go.k6.io/k6/js/common"
 	k6modulestest "go.k6.io/k6/js/modulestest"
 	k6metrics "go.k6.io/k6/metrics"
@@ -29,7 +27,7 @@ func TestModuleNew(t *testing.T) {
 	m, ok := New().NewModuleInstance(vu).(*ModuleInstance)
 	require.True(t, ok, "NewModuleInstance should return a ModuleInstance")
 	require.NotNil(t, m.mod, "Module should be set")
-	require.IsType(t, m.mod.Chromium, &chromium.BrowserType{})
+	require.NotNil(t, m.mod.Chromium, "Chromium should be set")
 	require.NotNil(t, m.mod.Devices, "Devices should be set")
 	require.Equal(t, m.mod.Version, version, "Incorrect version")
 }