Missing savePlaylist

[mp1pro]

Within Spotify.js, the function for saving the playList is missing. Here is the required code.

savePlaylist(name, trackUris) {
    if (!name || !trackUris.length) {
      return;
    }

    const accessToken = Spotify.getAccessToken();
    const headers = { Authorization: `Bearer ${accessToken}` };
    let userId;

    return fetch('https://api.spotify.com/v1/me', {headers: headers}
    ).then(response => response.json()
    ).then(jsonResponse => {
      userId = jsonResponse.id;
      return fetch(`https://api.spotify.com/v1/users/${userId}/playlists`, {
        headers: headers,
        method: 'POST',
        body: JSON.stringify({name: name})
      }).then(response => response.json()
      ).then(jsonResponse => {
        const playlistId = jsonResponse.id;
        return fetch(`https://api.spotify.com/v1/users/${userId}/playlists/${playlistId}/tracks`, {
          headers: headers,
          method: 'POST',
          body: JSON.stringify({uris: trackUris})
        });
      });
    });
  }
};