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- /*
- 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);
- });
- }).catch(function(err) {
- var status = module.hot.status();
- if(["abort", "fail"].indexOf(status) >= 0) {
- log("warning", "[HMR] Cannot apply update.");
- log("warning", "[HMR] " + err.stack || err.message);
- 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.");
- }
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