oh-my-posh/docs/api/auth/index.js

const axios = require('axios').default;

module.exports = async function (context, req) {
  context.log('JavaScript HTTP trigger function processed a request.');
  // http://www.strava.com/oauth/authorize?client_id=76033&response_type=code&redirect_uri=https://ohmyposh.dev/api/auth&approval_prompt=force&scope=read

  const code = (req.query.code || (req.body && req.body.code));

  var data = {
    client_id: process.env.STRAVA_CLIENT_ID,
    client_secret: process.env.STRAVA_CLIENT_SECRET,
    code: code,
    grant_type: 'authorization_code',
  };
  const resp = await axios.post('https://www.strava.com/oauth/token', data);

  context.res = {
    // status: 200, /* Defaults to 200 */
    body: resp.data
  };
}