added jsvm sleep binding

plugins/jsvm/binds.go

@@ -299,6 +299,10 @@ func baseBinds(vm *goja.Runtime) {
 		return string(bodyBytes), nil
 	})
 
+	vm.Set("sleep", func(milliseconds int64) {
+		time.Sleep(time.Duration(milliseconds) * time.Millisecond)
+	})
+
 	vm.Set("arrayOf", func(model any) any {
 		mt := reflect.TypeOf(model)
 		st := reflect.SliceOf(mt)

plugins/jsvm/binds_test.go

@@ -46,7 +46,29 @@ func TestBaseBindsCount(t *testing.T) {
 	vm := goja.New()
 	baseBinds(vm)
 
-	testBindsCount(vm, "this", 16, t)
+	testBindsCount(vm, "this", 17, t)
+}
+
+func TestBaseBindsSleep(t *testing.T) {
+	app, _ := tests.NewTestApp()
+	defer app.Cleanup()
+
+	vm := goja.New()
+	baseBinds(vm)
+	vm.Set("reader", strings.NewReader("test"))
+
+	start := time.Now()
+	_, err := vm.RunString(`
+		sleep(100);
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	lasted := time.Since(start).Milliseconds()
+	if lasted < 100 || lasted > 150 {
+		t.Fatalf("Expected to sleep for ~100ms, got %d", lasted)
+	}
 }
 
 func TestBaseBindsReaderToString(t *testing.T) {

plugins/jsvm/internal/types/types.go

@@ -211,6 +211,20 @@ declare var $template: template.Registry
  */
 declare function readerToString(reader: any, maxBytes?: number): string;
 
+/**
+ * sleep pauses the current goroutine for at least the specified user duration (in ms).
+ * A zero or negative duration returns immediately.
+ *
+ * Example:
+ *
+ * ` + "```" + `js
+ * slee(250) // sleeps for 250ms
+ * ` + "```" + `
+ *
+ * @group PocketBase
+ */
+declare function sleep(milliseconds: number): void;
+
 /**
  * arrayOf creates a placeholder array of the specified models.
  * Usually used to populate DB result into an array of models.