@barchart/common-js/lang/browser/connection.js

Library of common JavaScript utilities

import * as is from './../is.js';

/**
 * Determines whether the current browser context is using a secure protocol.
 *
 * @public
 * @param {boolean=} secure
 * @returns {boolean}
 */
export function getIsSecure(secure) {
	let returnVal;

	if (is.boolean(secure)) {
		returnVal = secure;
	} else {
		let protocol;

		if (window && window.location && is.string(window.location.protocol)) {
			protocol = window.location.protocol;
		} else if (document && document.location && is.string(document.location.protocol)) {
			protocol = document.location.protocol;
		} else {
			protocol = '';
		}

		returnVal = protocol.indexOf('https') === 0;
	}

	return returnVal;
}