@Override
  public @NotNull LiteralTextEscaper<? extends PsiLanguageInjectionHost> createLiteralTextEscaper() {
    return new JSStringLiteralEscaper<PsiLanguageInjectionHost>(this) {
      @Override
      protected boolean isRegExpLiteral() {
        return false;
      }
    };
  }
@Override
  public @NotNull LiteralTextEscaper<? extends PsiLanguageInjectionHost> createLiteralTextEscaper()