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HotModuleReplacement.runtime.js
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HotModuleReplacement.runtime.js
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/*
MIT License http:https://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
/*global $hash$ installedModules $require$ hotDownloadManifest hotDownloadUpdateChunk modules */
module.exports = function() {
var hotApplyOnUpdate = true;
var hotCurrentHash = $hash$; // eslint-disable-line no-unused-vars
var hotCurrentModuleData = {};
var hotCurrentParents = []; // eslint-disable-line no-unused-vars
function hotCreateRequire(moduleId) { // eslint-disable-line no-unused-vars
var me = installedModules[moduleId];
if(!me) return $require$;
var fn = function(request) {
if(me.hot.active) {
if(installedModules[request]) {
if(installedModules[request].parents.indexOf(moduleId) < 0)
installedModules[request].parents.push(moduleId);
if(me.children.indexOf(request) < 0)
me.children.push(request);
} else hotCurrentParents = [moduleId];
} else {
console.warn("[HMR] unexpected require(" + request + ") from disposed module " + moduleId);
hotCurrentParents = [];
}
return $require$(request);
};
for(var name in $require$) {
if(Object.prototype.hasOwnProperty.call($require$, name)) {
fn[name] = $require$[name];
}
}
fn.e = function(chunkId) {
if(hotStatus === "ready")
hotSetStatus("prepare");
hotChunksLoading++;
return $require$.e(chunkId).then(finishChunkLoading, function(err) {
finishChunkLoading();
throw err;
});
function finishChunkLoading() {
hotChunksLoading--;
if(hotStatus === "prepare") {
if(!hotWaitingFilesMap[chunkId]) {
hotEnsureUpdateChunk(chunkId);
}
if(hotChunksLoading === 0 && hotWaitingFiles === 0) {
hotUpdateDownloaded();
}
}
}
};
return fn;
}
function hotCreateModule(moduleId) { // eslint-disable-line no-unused-vars
var hot = {
// private stuff
_acceptedDependencies: {},
_declinedDependencies: {},
_selfAccepted: false,
_selfDeclined: false,
_disposeHandlers: [],
// Module API
active: true,
accept: function(dep, callback) {
if(typeof dep === "undefined")
hot._selfAccepted = true;
else if(typeof dep === "function")
hot._selfAccepted = dep;
else if(typeof dep === "object")
for(var i = 0; i < dep.length; i++)
hot._acceptedDependencies[dep[i]] = callback;
else
hot._acceptedDependencies[dep] = callback;
},
decline: function(dep) {
if(typeof dep === "undefined")
hot._selfDeclined = true;
else if(typeof dep === "number")
hot._declinedDependencies[dep] = true;
else
for(var i = 0; i < dep.length; i++)
hot._declinedDependencies[dep[i]] = true;
},
dispose: function(callback) {
hot._disposeHandlers.push(callback);
},
addDisposeHandler: function(callback) {
hot._disposeHandlers.push(callback);
},
removeDisposeHandler: function(callback) {
var idx = hot._disposeHandlers.indexOf(callback);
if(idx >= 0) hot._disposeHandlers.splice(idx, 1);
},
// Management API
check: hotCheck,
apply: hotApply,
status: function(l) {
if(!l) return hotStatus;
hotStatusHandlers.push(l);
},
addStatusHandler: function(l) {
hotStatusHandlers.push(l);
},
removeStatusHandler: function(l) {
var idx = hotStatusHandlers.indexOf(l);
if(idx >= 0) hotStatusHandlers.splice(idx, 1);
},
//inherit from previous dispose call
data: hotCurrentModuleData[moduleId]
};
return hot;
}
var hotStatusHandlers = [];
var hotStatus = "idle";
function hotSetStatus(newStatus) {
hotStatus = newStatus;
for(var i = 0; i < hotStatusHandlers.length; i++)
hotStatusHandlers[i].call(null, newStatus);
}
// while downloading
var hotWaitingFiles = 0;
var hotChunksLoading = 0;
var hotWaitingFilesMap = {};
var hotRequestedFilesMap = {};
var hotAvailibleFilesMap = {};
var hotDeferred;
// The update info
var hotUpdate, hotUpdateNewHash;
function toModuleId(id) {
var isNumber = (+id) + "" === id;
return isNumber ? +id : id;
}
function hotCheck(apply) {
if(hotStatus !== "idle") throw new Error("check() is only allowed in idle status");
hotApplyOnUpdate = apply;
hotSetStatus("check");
return hotDownloadManifest().then(function(update) {
if(!update) {
hotSetStatus("idle");
return null;
}
hotRequestedFilesMap = {};
hotAvailibleFilesMap = {};
hotWaitingFilesMap = {};
for(var i = 0; i < update.c.length; i++)
hotAvailibleFilesMap[update.c[i]] = true;
hotUpdateNewHash = update.h;
hotSetStatus("prepare");
var promise = new Promise(function(resolve, reject) {
hotDeferred = {
resolve: resolve,
reject: reject
};
});
hotUpdate = {};
/*foreachInstalledChunks*/
{ // eslint-disable-line no-lone-blocks
/*globals chunkId */
hotEnsureUpdateChunk(chunkId);
}
if(hotStatus === "prepare" && hotChunksLoading === 0 && hotWaitingFiles === 0) {
hotUpdateDownloaded();
}
return promise;
});
}
function hotAddUpdateChunk(chunkId, moreModules) { // eslint-disable-line no-unused-vars
if(!hotAvailibleFilesMap[chunkId] || !hotRequestedFilesMap[chunkId])
return;
hotRequestedFilesMap[chunkId] = false;
for(var moduleId in moreModules) {
if(Object.prototype.hasOwnProperty.call(moreModules, moduleId)) {
hotUpdate[moduleId] = moreModules[moduleId];
}
}
if(--hotWaitingFiles === 0 && hotChunksLoading === 0) {
hotUpdateDownloaded();
}
}
function hotEnsureUpdateChunk(chunkId) {
if(!hotAvailibleFilesMap[chunkId]) {
hotWaitingFilesMap[chunkId] = true;
} else {
hotRequestedFilesMap[chunkId] = true;
hotWaitingFiles++;
hotDownloadUpdateChunk(chunkId);
}
}
function hotUpdateDownloaded() {
hotSetStatus("ready");
var deferred = hotDeferred;
hotDeferred = null;
if(!deferred) return;
if(hotApplyOnUpdate) {
hotApply(hotApplyOnUpdate).then(function(result) {
deferred.resolve(result);
}, function(err) {
deferred.reject(err);
});
} else {
var outdatedModules = [];
for(var id in hotUpdate) {
if(Object.prototype.hasOwnProperty.call(hotUpdate, id)) {
outdatedModules.push(toModuleId(id));
}
}
deferred.resolve(outdatedModules);
}
}
function hotApply(options) {
if(hotStatus !== "ready") throw new Error("apply() is only allowed in ready status");
options = options || {};
function getAffectedStuff(module) {
var outdatedModules = [module];
var outdatedDependencies = {};
var queue = outdatedModules.slice();
while(queue.length > 0) {
var moduleId = queue.pop();
var module = installedModules[moduleId];
if(!module || module.hot._selfAccepted)
continue;
if(module.hot._selfDeclined) {
return new Error("Aborted because of self decline: " + moduleId);
}
if($require$.s === moduleId) {
return;
}
for(var i = 0; i < module.parents.length; i++) {
var parentId = module.parents[i];
var parent = installedModules[parentId];
if(parent.hot._declinedDependencies[moduleId]) {
return new Error("Aborted because of declined dependency: " + moduleId + " in " + parentId);
}
if(outdatedModules.indexOf(parentId) >= 0) continue;
if(parent.hot._acceptedDependencies[moduleId]) {
if(!outdatedDependencies[parentId])
outdatedDependencies[parentId] = [];
addAllToSet(outdatedDependencies[parentId], [moduleId]);
continue;
}
delete outdatedDependencies[parentId];
outdatedModules.push(parentId);
queue.push(parentId);
}
}
return [outdatedModules, outdatedDependencies];
}
function addAllToSet(a, b) {
for(var i = 0; i < b.length; i++) {
var item = b[i];
if(a.indexOf(item) < 0)
a.push(item);
}
}
// at begin all updates modules are outdated
// the "outdated" status can propagate to parents if they don't accept the children
var outdatedDependencies = {};
var outdatedModules = [];
var appliedUpdate = {};
for(var id in hotUpdate) {
if(Object.prototype.hasOwnProperty.call(hotUpdate, id)) {
var moduleId = toModuleId(id);
var result = getAffectedStuff(moduleId);
if(!result) {
if(options.ignoreUnaccepted)
continue;
hotSetStatus("abort");
return Promise.reject(new Error("Aborted because " + moduleId + " is not accepted"));
}
if(result instanceof Error) {
hotSetStatus("abort");
return Promise.reject(result);
}
appliedUpdate[moduleId] = hotUpdate[moduleId];
addAllToSet(outdatedModules, result[0]);
for(var moduleId in result[1]) {
if(Object.prototype.hasOwnProperty.call(result[1], moduleId)) {
if(!outdatedDependencies[moduleId])
outdatedDependencies[moduleId] = [];
addAllToSet(outdatedDependencies[moduleId], result[1][moduleId]);
}
}
}
}
// Store self accepted outdated modules to require them later by the module system
var outdatedSelfAcceptedModules = [];
for(var i = 0; i < outdatedModules.length; i++) {
var moduleId = outdatedModules[i];
if(installedModules[moduleId] && installedModules[moduleId].hot._selfAccepted)
outdatedSelfAcceptedModules.push({
module: moduleId,
errorHandler: installedModules[moduleId].hot._selfAccepted
});
}
// Now in "dispose" phase
hotSetStatus("dispose");
var queue = outdatedModules.slice();
while(queue.length > 0) {
var moduleId = queue.pop();
var module = installedModules[moduleId];
if(!module) continue;
var data = {};
// Call dispose handlers
var disposeHandlers = module.hot._disposeHandlers;
for(var j = 0; j < disposeHandlers.length; j++) {
var cb = disposeHandlers[j];
cb(data);
}
hotCurrentModuleData[moduleId] = data;
// disable module (this disables requires from this module)
module.hot.active = false;
// remove module from cache
delete installedModules[moduleId];
// remove "parents" references from all children
for(var j = 0; j < module.children.length; j++) {
var child = installedModules[module.children[j]];
if(!child) continue;
var idx = child.parents.indexOf(moduleId);
if(idx >= 0) {
child.parents.splice(idx, 1);
}
}
}
// remove outdated dependency from module children
for(var moduleId in outdatedDependencies) {
if(Object.prototype.hasOwnProperty.call(outdatedDependencies, moduleId)) {
var module = installedModules[moduleId];
var moduleOutdatedDependencies = outdatedDependencies[moduleId];
for(var j = 0; j < moduleOutdatedDependencies.length; j++) {
var dependency = moduleOutdatedDependencies[j];
var idx = module.children.indexOf(dependency);
if(idx >= 0) module.children.splice(idx, 1);
}
}
}
// Not in "apply" phase
hotSetStatus("apply");
hotCurrentHash = hotUpdateNewHash;
// insert new code
for(var moduleId in appliedUpdate) {
if(Object.prototype.hasOwnProperty.call(appliedUpdate, moduleId)) {
modules[moduleId] = appliedUpdate[moduleId];
}
}
// call accept handlers
var error = null;
for(var moduleId in outdatedDependencies) {
if(Object.prototype.hasOwnProperty.call(outdatedDependencies, moduleId)) {
var module = installedModules[moduleId];
var moduleOutdatedDependencies = outdatedDependencies[moduleId];
var callbacks = [];
for(var i = 0; i < moduleOutdatedDependencies.length; i++) {
var dependency = moduleOutdatedDependencies[i];
var cb = module.hot._acceptedDependencies[dependency];
if(callbacks.indexOf(cb) >= 0) continue;
callbacks.push(cb);
}
for(var i = 0; i < callbacks.length; i++) {
var cb = callbacks[i];
try {
cb(outdatedDependencies);
} catch(err) {
if(!error)
error = err;
}
}
}
}
// Load self accepted modules
for(var i = 0; i < outdatedSelfAcceptedModules.length; i++) {
var item = outdatedSelfAcceptedModules[i];
var moduleId = item.module;
hotCurrentParents = [moduleId];
try {
$require$(moduleId);
} catch(err) {
if(typeof item.errorHandler === "function") {
try {
item.errorHandler(err);
} catch(err) {
if(!error)
error = err;
}
} else if(!error)
error = err;
}
}
// handle errors in accept handlers and self accepted module load
if(error) {
hotSetStatus("fail");
return Promise.reject(error);
}
hotSetStatus("idle");
return Promise.resolve(outdatedModules);
}
};