const { RestClientV2 } = require('bitget-api');

  // ENDPOINT: /api/v2/mix/account/set-margin-mode
  // METHOD: POST
  // PUBLIC: NO
  // Link to function: https://github.com/tiagosiebler/bitget-api/blob/master/src/rest-client-v2.ts#L616

const client = new RestClientV2({
  apiKey: 'insert_api_key_here',
  apiSecret: 'insert_api_secret_here',
});

client.setFuturesMarginMode(params)
  .then((response) => {
    console.log(response);
  })
  .catch((error) => {
    console.error(error);
  });