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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);
- 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.");
- }
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