Sample JavaScript Library

The following is a sample JavaScript library that can be used to send Extend API requests and handle the response.
 /**
 * Send a Switchvox API request
 * @param {string} method - Switchvox API method name e.g. "switchvox.users.getMyInfo"
 * @param {object} parameters - parameters as required by that API. Defaults to {}
 * @example
 * SV.api.send('switchvox.users.getMyInfo', {'type' : 'EXTERNAL'})
 * .then(function (res) { console.log(res); });
 * @returns {Promise}
 */
module.exports.send = function (method, parameters) {
	var url = "/json";	return new Promise(function (resolve, reject) {
		var request = {
			'request'	: {
				'method'		: method,
				'parameters'	: parameters || {}
			}
		};
		var req = new XMLHttpRequest();
		req.addEventListener('load', function () {
			handleResponse(req.responseText, resolve, reject);
		});
		req.addEventListener('error', reject);
		req.open(reqMethod, url, true);		req.setRequestHeader('Content-Type', 'application/json');
		req.send(JSON.stringify(request));
	});
};function handleResponse (responseText, resolve, reject) {
	if (!responseText) {
		reject(new ExtendApiError('Did not receive a response'));
	} else {
		var res;		try {
			res = JSON.parse(responseText);
		} catch(e) {
			reject(new ExtendApiError('Problem parsing JSON response'));
		}
		if (!res) {
			reject(new ExtendApiError('Parsed an undefined response'));
		} else if (res.response.errors) {
			var errors = forceArray(res.response.errors.error);
			var msg = (errors.length) ? errors[0].message : 'Extend Api Error';
			reject(new ExtendApiError(msg, errors));
		} else if (res.response.result) {
			resolve(res.response.result);
		}
	}
}