my attempt to adapt glitch.com/~spotify-web-api-node into Netlify functions

netlify-functions-spotify-api.js

// truncated version of my attempt to adapt https://glitch.com/~spotify-web-api-node into Netlify functions

const SpotifyWebApi = require("spotify-web-api-node");

const TEST_ARTIST_ID = "1lYT0A0LV5DUfxr6doRP3d";

let accessToken;

const spotifyApi = new SpotifyWebApi({
  clientId: process.env.SPOTIFY_CLIENT_ID,
  clientSecret: process.env.SPOTIFY_CLIENT_SECRET,
});

exports.handler = async (event) => {
  if (!accessToken) {
    const result = await spotifyApi.clientCredentialsGrant().then((data) => data);
    accessToken = await result.body["access_token"];
  }

  const spotifyAuthApi = new SpotifyWebApi({ accessToken });

  try {
    data = await spotifyAuthApi.getArtist(TEST_ARTIST_ID);
    return {
      statusCode: 200,
      body: JSON.stringify(data.body),
    };
  } catch (err) {
    return {
      statusCode: 500, // temporary error code
    };
  }
};