当提到更高的角色时返回

您可以使用 <Role>.comparePositions(role1, role2) 方法。下面是一个例子：

const { Role } = require("discord.js");

const role = message.mentions.roles.first();
const highest = message.member.roles.highest;
if (Role.comparePositions(highest, role) <= 0)
    console.log("Mentioned role's position is equal or higher than author's role");