Axios提供了auth选项，该选项接受带有username和password选项的对象。您可以将username设置为您的帐户SID，将password设置为您的授权令牌。
headers对象应该作为第三个参数中的配置对象的headers参数发送到axios.post，如下所示：

const params = new URLSearchParams();
params.append('Body','Hello from vcs');
params.append('To',toNumber);
params.append('From',fromNumber);

const headers = {
  'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8',
};

exports.axios = () => axios.post(
  `https://api.twilio.com/2010-04-01/Accounts/${accountSID}/Messages.json`,
  params,
  { 
    headers,
    auth: {
      username: accountSID,
      password: authToken
    }
  }
}).then((res) => {
  console.log(res, 'res');
}).catch((err) => {
  console.log(err);
});

头实际上是配置的一个字段，尝试如下：

const config = {
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8',
    Authorization: `Basic ${accountSID}:${authToken}`,
  }
}

axios.post(URL, data, config).then(...)

或者这个（调用Twilio端点的一般示例）

const axios = require('axios');

const roomSID = 'RM1...';
const participantSID = 'PA8...';

const ACCOUNT_SID = process.env.ACCOUNT_SID;
const AUTH_TOKEN = process.env.AUTH_TOKEN;

 const URL = "https://insights.twilio.com/v1/Video/Rooms/"+roomSID+"/Participants/"+participantSID;
    axios({
      method: 'get',
      url: URL,
      auth: {
        username: ACCOUNT_SID,
        password: AUTH_TOKEN
      }
    })
      .then((response) => {
        console.log(response.data);
      })
      .catch((error) => {
          console.log(error);
      });

工作代码：

const params = new URLSearchParams();

params.append('Body','Hello from vcs');
params.append('To',toNumber);
params.append('From',fromNumber);

exports.axios = () => axios.post(
  `https://api.twilio.com/2010-04-01/Accounts/${accountSID}/Messages.json`,
  params,
  {
    auth: {
      username: accountSID,
      password: authToken,
    },
  },
).then((res) => {
  console.log(res, 'res');
}).catch((err) => {
  console.log(err);
});

以前的解决方案对我不起作用。我遇到了Can't find variable: btoa错误或A 'To' phone number is required.。
使用qs对我很有效：

import qs from 'qs';
import axios from 'axios';

const TWILIO_ACCOUNT_SID = ""
const TWILIO_AUTH_TOKEN = ""
const FROM = ""
const TO = ""

const sendText = async (message: string) => {
  try {
    const result = await axios.post(
      `https://api.twilio.com/2010-04-01/Accounts/${TWILIO_ACCOUNT_SID}/Messages.json`,
      qs.stringify({
        Body: message,
        To: TO,
        From: FROM,
      }),
      {
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded',
        },
        auth: {
          username: TWILIO_ACCOUNT_SID,
          password: TWILIO_AUTH_TOKEN,
        },
      },
    );
    console.log({result});
  } catch (e) {
    console.log({e});
    console.log({e: e.response?.data});
  }
};