@tdb/web/debug.js/node_modules/unfetch/dist/unfetch.es.js

Common condiguration for serving a web-site and testing web-based UI components.

var index = typeof fetch=='function' ? fetch.bind() : function(url, options) {
	options = options || {};
	return new Promise( function (resolve, reject) {
		var request = new XMLHttpRequest();

		request.open(options.method || 'get', url);

		for (var i in options.headers) {
			request.setRequestHeader(i, options.headers[i]);
		}

		request.withCredentials = options.credentials=='include';

		request.onload = function () {
			resolve(response());
		};

		request.onerror = reject;

		request.send(options.body);

		function response() {
			var keys = [],
				all = [],
				headers = {},
				header;

			request.getAllResponseHeaders().replace(/^(.*?):\s*([\s\S]*?)$/gm, function (m, key, value) {
				keys.push(key = key.toLowerCase());
				all.push([key, value]);
				header = headers[key];
				headers[key] = header ? (header + "," + value) : value;
			});

			return {
				ok: (request.status/200|0) == 1,		// 200-299
				status: request.status,
				statusText: request.statusText,
				url: request.responseURL,
				clone: response,
				text: function () { return Promise.resolve(request.responseText); },
				json: function () { return Promise.resolve(request.responseText).then(JSON.parse); },
				blob: function () { return Promise.resolve(new Blob([request.response])); },
				headers: {
					keys: function () { return keys; },
					entries: function () { return all; },
					get: function (n) { return headers[n.toLowerCase()]; },
					has: function (n) { return n.toLowerCase() in headers; }
				}
			};
		}
	});
};

export default index;
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