test.jsx

{user.role === "user" && (
    <div className="header__dashboard-link">
      <Link to="/dashboard/user">Tableau de bord</Link>
    </div>
    <div className="header__dashboard-link">
      <Link to="/dashboard/user">Otro menu</Link>
    </div>
)}


{user.role === "seller" && (
    <div className="header__dashboard-link">
      <Link to="/dashboard/user">Tableau de bord</Link>
    </div>
    <div className="header__dashboard-link">
      <Link to="/dashboard/user">Otro menu para seller</Link>
    </div>
)}


{user.role === "admin" && (
    <div className="header__dashboard-link">
      <Link to="/dashboard/user">Tableau de bord</Link>
    </div>
    <div className="header__dashboard-link">
      <Link to="/dashboard/user">Otro menu para admin</Link>
    </div>
)}