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feat(depinject): optimize isExportedType function for performance #23857

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3 changes: 2 additions & 1 deletion depinject/check_type.go
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import (
"slices"
"strings"
"unicode"
"unicode/utf8"
)

// isExportedType checks if the type is exported and not in an internal
Expand All @@ -19,7 +20,7 @@ func isExportedType(typ reflect.Type) error {
name := typ.Name()
pkgPath := typ.PkgPath()
if name != "" && pkgPath != "" {
if unicode.IsLower([]rune(name)[0]) {
if r, _ := utf8.DecodeRuneInString(name); unicode.IsLower(r) {
return fmt.Errorf("type must be exported: %s", typ)
}

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