fix: use regexp2 instead of regexp in getWildcardDirectories

Switch from Go's standard regexp package to regexp2 with ECMAScript mode
to properly handle Unicode characters in file paths. The standard regexp
package doesn't support ECMAScript regex semantics, which the original
code was trying to emulate.

Author: camc314

internal/tsoptions/wildcarddirectories.go

@@ -1,7 +1,6 @@
 package tsoptions
 
 import (
-	"regexp"
 	"strings"
 
 	"github.com/dlclark/regexp2"
@@ -28,13 +27,13 @@ func getWildcardDirectories(include []string, exclude []string, comparePathsOpti
 	}
 
 	rawExcludeRegex := vfs.GetRegularExpressionForWildcard(exclude, comparePathsOptions.CurrentDirectory, "exclude")
-	var excludeRegex *regexp.Regexp
+	var excludeRegex *regexp2.Regexp
 	if rawExcludeRegex != "" {
-		options := ""
+		flags := regexp2.ECMAScript
 		if !comparePathsOptions.UseCaseSensitiveFileNames {
-			options = "(?i)"
+			flags |= regexp2.IgnoreCase
 		}
-		excludeRegex = regexp.MustCompile(options + rawExcludeRegex)
+		excludeRegex = regexp2.MustCompile(rawExcludeRegex, regexp2.RegexOptions(flags))
 	}
 
 	wildcardDirectories := make(map[string]bool)
@@ -44,8 +43,10 @@ func getWildcardDirectories(include []string, exclude []string, comparePathsOpti
 
 	for _, file := range include {
 		spec := tspath.NormalizeSlashes(tspath.CombinePaths(comparePathsOptions.CurrentDirectory, file))
-		if excludeRegex != nil && excludeRegex.MatchString(spec) {
-			continue
+		if excludeRegex != nil {
+			if matched, _ := excludeRegex.MatchString(spec); matched {
+				continue
+			}
 		}
 
 		match := getWildcardDirectoryFromSpec(spec, comparePathsOptions.UseCaseSensitiveFileNames)