我想你需要這樣的東西: const email = "xxx@xxxx.com"const request = require('request');function isUserExists(email, kc_accessToken) { let url = `${path}/users?email=${email}`; return new Promise(function(resolve, reject){ request({ url: url, headers: { "content-type": "application/json", "authorization": `Bearer ${kc_accessToken}` } }, function (error, response, body) { if (error) { console.log("some error occured"); } if (response.data.length > 0) { return resolve(); } return reject(); }); });}