Post.js

/**
 * Submit the form.
 *
 * @param {string} requestType
 * @param {string} url
 */
submit(requestType, url) {
    return new Promise((resolve, reject) => {
        axios[requestType](url, this.data())
            .then(response => {
                this.onSuccess(response.data);

                resolve(response.data);
            })
            .catch(error => {
                this.onFail(error.response.data.errors);

                reject(error.response.data.errors);
            });
    });
}


/**
* Send a POST request to the given URL.
* .
* @param {string} url
*/
post(url) {
  return this.submit('post', url);
}