| /* |
| MIT License http://www.opensource.org/licenses/mit-license.php |
| Author Tobias Koppers @sokra |
| */ |
| /*globals __resourceQuery */ |
| if (module.hot) { |
| var log = require("./log"); |
| var checkForUpdate = function checkForUpdate(fromUpdate) { |
| module.hot |
| .check() |
| .then(function(updatedModules) { |
| if (!updatedModules) { |
| if (fromUpdate) log("info", "[HMR] Update applied."); |
| else log("warning", "[HMR] Cannot find update."); |
| return; |
| } |
| |
| return module.hot |
| .apply({ |
| ignoreUnaccepted: true, |
| onUnaccepted: function(data) { |
| log( |
| "warning", |
| "Ignored an update to unaccepted module " + |
| data.chain.join(" -> ") |
| ); |
| } |
| }) |
| .then(function(renewedModules) { |
| require("./log-apply-result")(updatedModules, renewedModules); |
| |
| checkForUpdate(true); |
| return null; |
| }); |
| }) |
| .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: " + (err.stack || err.message)); |
| } |
| }); |
| }; |
| |
| process.on(__resourceQuery.substr(1) || "SIGUSR2", function() { |
| if (module.hot.status() !== "idle") { |
| log( |
| "warning", |
| "[HMR] Got signal but currently in " + module.hot.status() + " state." |
| ); |
| log("warning", "[HMR] Need to be in idle state to start hot update."); |
| return; |
| } |
| |
| checkForUpdate(); |
| }); |
| } else { |
| throw new Error("[HMR] Hot Module Replacement is disabled."); |
| } |