refactor: use slices.Contains in more places

- workertypes.IsValid(): replace manual loop with slices.Contains
- worker-java transformOutput(): simplify forbidden line filtering

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mxschmitt

internal/workertypes/types.go

@@ -1,5 +1,7 @@
 package workertypes
 
+import "slices"
+
 type File struct {
 	PublicURL string `json:"publicURL"`
 	FileName  string `json:"fileName"`
@@ -38,10 +40,5 @@ var SUPPORTED_LANGUAGES = []WorkerLanguage{
 }
 
 func (givenLanguage WorkerLanguage) IsValid() bool {
-	for _, language := range SUPPORTED_LANGUAGES {
-		if string(givenLanguage) == string(language) {
-			return true
-		}
-	}
-	return false
+	return slices.Contains(SUPPORTED_LANGUAGES, givenLanguage)
 }

worker-java/main.go

@@ -7,6 +7,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"slices"
 	"strings"
 
 	"github.com/mxschmitt/try-playwright/internal/worker"
@@ -49,14 +50,7 @@ func transformOutput(input string) string {
 	lines := strings.Split(input, NEW_LINE_SEPARATOR)
 	out := []string{}
 	for _, line := range lines {
-		lineIsOk := true
-		for _, forbidenLine := range forbiddenLines {
-			if forbidenLine == line {
-				lineIsOk = false
-				break
-			}
-		}
-		if lineIsOk {
+		if !slices.Contains(forbiddenLines, line) {
 			out = append(out, line)
 		}
 	}