webpack/hot/poll.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
/*globals __resourceQuery */
if (module.hot) {
	var hotPollInterval = +__resourceQuery.slice(1) || 10 * 60 * 1000;
	var log = require("./log");

	/**
	 * @param {boolean=} fromUpdate true when called from update
	 */
	var checkForUpdate = function checkForUpdate(fromUpdate) {
		if (module.hot.status() === "idle") {
			module.hot
				.check(true)
				.then(function (updatedModules) {
					if (!updatedModules) {
						if (fromUpdate) log("info", "[HMR] Update applied.");
						return;
					}
					require("./log-apply-result")(updatedModules, updatedModules);
					checkForUpdate(true);
				})
				.catch(function (err) {
					var status = module.hot.status();
					if (["abort", "fail"].indexOf(status) >= 0) {
						log("warning", "[HMR] Cannot apply update.");
						log("warning", "[HMR] " + log.formatError(err));
						log("warning", "[HMR] You need to restart the application!");
					} else {
						log("warning", "[HMR] Update failed: " + log.formatError(err));
					}
				});
		}
	};
	setInterval(checkForUpdate, hotPollInterval);
} else {
	throw new Error("[HMR] Hot Module Replacement is disabled.");
}