fix JavaScript case

Author: silverwind

modules/highlight/highlight.go

@@ -224,5 +224,5 @@ func formatLexerName(name string) string {
 		return "Plaintext"
 	}
 
-	return util.ToTitleCase(name)
+	return util.ToTitleCaseNoLower(name)
 }

modules/highlight/highlight_test.go

@@ -32,7 +32,7 @@ func TestFile(t *testing.T) {
 			name:      "empty.js",
 			code:      "",
 			want:      lines(""),
-			lexerName: "Javascript",
+			lexerName: "JavaScript",
 		},
 		{
 			name:      "tags.txt",

modules/util/util.go

@@ -187,12 +187,18 @@ func ToUpperASCII(s string) string {
 }
 
 var titleCaser = cases.Title(language.English)
+var titleCaserNoLower = cases.Title(language.English, cases.NoLower)
 
 // ToTitleCase returns s with all english words capitalized
 func ToTitleCase(s string) string {
 	return titleCaser.String(s)
 }
 
+// ToTitleCaseNoLower returns s with all english words capitalized without lowercasing
+func ToTitleCaseNoLower(s string) string {
+	return titleCaserNoLower.String(s)
+}
+
 var (
 	whitespaceOnly    = regexp.MustCompile("(?m)^[ \t]+$")
 	leadingWhitespace = regexp.MustCompile("(?m)(^[ \t]*)(?:[^ \t\n])")