Add a new env var to enable devTools

chromium/browser_type.go

@@ -387,7 +387,7 @@ func prepareFlags(lopts *common.BrowserOptions, k6opts *k6lib.Options) (map[stri
 		"headless":                 lopts.Headless,
 		"window-size":              fmt.Sprintf("%d,%d", 800, 600),
 	}
-	if lopts.Debug {
+	if lopts.DevTools {
 		f["auto-open-devtools-for-tabs"] = true
 		lopts.Headless = false
 	}

common/browser_options.go

@@ -21,6 +21,7 @@ const optType = "type"
 type BrowserOptions struct {
 	Args              []string
 	Debug             bool
+	DevTools          bool
 	ExecutablePath    string
 	Headless          bool
 	IgnoreDefaultArgs []string
@@ -79,6 +80,7 @@ func (bo *BrowserOptions) Parse( //nolint:cyclop
 		env.BrowserIgnoreDefaultArgs,
 		env.LogCategoryFilter,
 		env.BrowserGlobalTimeout,
+		env.BrowserDevTools,
 	}
 
 	for _, e := range envOpts {
@@ -106,6 +108,8 @@ func (bo *BrowserOptions) Parse( //nolint:cyclop
 			bo.LogCategoryFilter = ev
 		case env.BrowserGlobalTimeout:
 			bo.Timeout, err = parseTimeOpt(e, ev)
+		case env.BrowserDevTools:
+			bo.DevTools, err = parseBoolOpt(e, ev)
 		}
 		if err != nil {
 			return err

env/env.go

@@ -39,6 +39,10 @@ const (
 	// BrowserGlobalTimeout is an environment variable that can be used
 	// to set the global timeout for the browser.
 	BrowserGlobalTimeout = "K6_BROWSER_TIMEOUT"
+
+	// BrowserDevTools will open up the dev tools window allowing quick
+	// access to the SuT DOM and other debug facilities in chrome.
+	BrowserDevTools = "K6_BROWSER_DEVTOOLS"
 )
 
 // Logging and debugging.