feat: use k6's new module API

Migrate the extension internals to new k6's module API

.gitignore

@@ -1,3 +1,4 @@
 /k6
 .task
 node_modules
+vendor/

Taskfile.yml

@@ -23,7 +23,7 @@
 version: "3"
 
 env:
-  K6_VERSION: v0.32.0
+  K6_VERSION: v0.37.0
 
 silent: true
 

faker.go

@@ -1,26 +1,26 @@
 package faker
 
 import (
-	"context"
-
 	"github.com/brianvoe/gofakeit/v6"
 	"github.com/dop251/goja"
-	"go.k6.io/k6/js/common"
+	"go.k6.io/k6/js/modules"
 	"lukechampine.com/frand"
 )
 
 type Faker struct {
+	vu modules.VU
+
 	*gofakeit.Faker
 }
 
-func newFaker(seed int64) *Faker {
+func newFaker(vu modules.VU, seed int64) *Faker {
 	src := frand.NewSource()
 
 	if seed != 0 {
 		src.Seed(seed)
 	}
 
-	return &Faker{Faker: gofakeit.NewCustom(src)}
+	return &Faker{vu: vu, Faker: gofakeit.NewCustom(src)}
 }
 
 func (f *Faker) Ipv4Address() string {
@@ -55,10 +55,10 @@ func (f *Faker) RgbColor() []int {
 	return f.RGBColor()
 }
 
-func (f *Faker) ImageJpeg(ctx context.Context, width int, height int) goja.ArrayBuffer {
-	return common.GetRuntime(ctx).NewArrayBuffer(f.Faker.ImageJpeg(width, height))
+func (f *Faker) ImageJpeg(width int, height int) goja.ArrayBuffer {
+	return f.vu.Runtime().NewArrayBuffer(f.Faker.ImageJpeg(width, height))
 }
 
-func (f *Faker) ImagePng(ctx context.Context, width int, height int) goja.ArrayBuffer {
-	return common.GetRuntime(ctx).NewArrayBuffer(f.Faker.ImagePng(width, height))
+func (f *Faker) ImagePng(width int, height int) goja.ArrayBuffer {
+	return f.vu.Runtime().NewArrayBuffer(f.Faker.ImagePng(width, height))
 }

go.mod

@@ -4,8 +4,8 @@ go 1.16
 
 require (
 	github.com/brianvoe/gofakeit/v6 v6.4.1
-	github.com/dop251/goja v0.0.0-20210427212725-462d53687b0d
+	github.com/dop251/goja v0.0.0-20220124171016-cfb079cdc7b4
 	github.com/sirupsen/logrus v1.8.1
-	go.k6.io/k6 v0.32.0
+	go.k6.io/k6 v0.37.0
 	lukechampine.com/frand v1.4.2
 )