webpack
Version:
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
377 lines (338 loc) • 9.34 kB
JavaScript
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
;
var $interceptModuleExecution$ = undefined;
var $moduleCache$ = undefined;
// eslint-disable-next-line no-unused-vars
var $hmrModuleData$ = undefined;
var $hmrDownloadManifest$ = undefined;
var $hmrDownloadUpdateHandlers$ = undefined;
var $hmrInvalidateModuleHandlers$ = undefined;
var __webpack_require__ = undefined;
module.exports = function () {
var currentModuleData = {};
var installedModules = $moduleCache$;
// module and require creation
var currentChildModule;
var currentParents = [];
// status
var registeredStatusHandlers = [];
var currentStatus = "idle";
// while downloading
var blockingPromises;
// The update info
var currentUpdateApplyHandlers;
var queuedInvalidatedModules;
$hmrModuleData$ = currentModuleData;
$interceptModuleExecution$.push(function (options) {
var module = options.module;
var require = createRequire(options.require, options.id);
module.hot = createModuleHotObject(options.id, module);
module.parents = currentParents;
module.children = [];
currentParents = [];
options.require = require;
});
$hmrDownloadUpdateHandlers$ = {};
$hmrInvalidateModuleHandlers$ = {};
function createRequire(require, moduleId) {
var me = installedModules[moduleId];
if (!me) return require;
var fn = function (request) {
if (me.hot.active) {
if (installedModules[request]) {
var parents = installedModules[request].parents;
if (parents.indexOf(moduleId) === -1) {
parents.push(moduleId);
}
} else {
currentParents = [moduleId];
currentChildModule = request;
}
if (me.children.indexOf(request) === -1) {
me.children.push(request);
}
} else {
console.warn(
"[HMR] unexpected require(" +
request +
") from disposed module " +
moduleId
);
currentParents = [];
}
return require(request);
};
var createPropertyDescriptor = function (name) {
return {
configurable: true,
enumerable: true,
get: function () {
return require[name];
},
set: function (value) {
require[name] = value;
}
};
};
for (var name in require) {
if (Object.prototype.hasOwnProperty.call(require, name) && name !== "e") {
Object.defineProperty(fn, name, createPropertyDescriptor(name));
}
}
fn.e = function (chunkId) {
return trackBlockingPromise(require.e(chunkId));
};
return fn;
}
function createModuleHotObject(moduleId, me) {
var hot = {
// private stuff
_acceptedDependencies: {},
_declinedDependencies: {},
_selfAccepted: false,
_selfDeclined: false,
_selfInvalidated: false,
_disposeHandlers: [],
_main: currentChildModule !== moduleId,
_requireSelf: function () {
currentParents = me.parents.slice();
currentChildModule = moduleId;
__webpack_require__(moduleId);
},
// Module API
active: true,
accept: function (dep, callback) {
if (dep === undefined) hot._selfAccepted = true;
else if (typeof dep === "function") hot._selfAccepted = dep;
else if (typeof dep === "object" && dep !== null)
for (var i = 0; i < dep.length; i++)
hot._acceptedDependencies[dep[i]] = callback || function () {};
else hot._acceptedDependencies[dep] = callback || function () {};
},
decline: function (dep) {
if (dep === undefined) hot._selfDeclined = true;
else if (typeof dep === "object" && dep !== null)
for (var i = 0; i < dep.length; i++)
hot._declinedDependencies[dep[i]] = true;
else hot._declinedDependencies[dep] = 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);
},
invalidate: function () {
this._selfInvalidated = true;
switch (currentStatus) {
case "idle":
currentUpdateApplyHandlers = [];
Object.keys($hmrInvalidateModuleHandlers$).forEach(function (key) {
$hmrInvalidateModuleHandlers$[key](
moduleId,
currentUpdateApplyHandlers
);
});
setStatus("ready");
break;
case "ready":
Object.keys($hmrInvalidateModuleHandlers$).forEach(function (key) {
$hmrInvalidateModuleHandlers$[key](
moduleId,
currentUpdateApplyHandlers
);
});
break;
case "prepare":
case "check":
case "dispose":
case "apply":
(queuedInvalidatedModules = queuedInvalidatedModules || []).push(
moduleId
);
break;
default:
// ignore requests in error states
break;
}
},
// Management API
check: hotCheck,
apply: hotApply,
status: function (l) {
if (!l) return currentStatus;
registeredStatusHandlers.push(l);
},
addStatusHandler: function (l) {
registeredStatusHandlers.push(l);
},
removeStatusHandler: function (l) {
var idx = registeredStatusHandlers.indexOf(l);
if (idx >= 0) registeredStatusHandlers.splice(idx, 1);
},
//inherit from previous dispose call
data: currentModuleData[moduleId]
};
currentChildModule = undefined;
return hot;
}
function setStatus(newStatus) {
currentStatus = newStatus;
for (var i = 0; i < registeredStatusHandlers.length; i++)
registeredStatusHandlers[i].call(null, newStatus);
}
function trackBlockingPromise(promise) {
switch (currentStatus) {
case "ready":
setStatus("prepare");
blockingPromises.push(promise);
waitForBlockingPromises(function () {
setStatus("ready");
});
return promise;
case "prepare":
blockingPromises.push(promise);
return promise;
default:
return promise;
}
}
function waitForBlockingPromises(fn) {
if (blockingPromises.length === 0) return fn();
var blocker = blockingPromises;
blockingPromises = [];
return Promise.all(blocker).then(function () {
return waitForBlockingPromises(fn);
});
}
function hotCheck(applyOnUpdate) {
if (currentStatus !== "idle") {
throw new Error("check() is only allowed in idle status");
}
setStatus("check");
return $hmrDownloadManifest$().then(function (update) {
if (!update) {
setStatus(applyInvalidatedModules() ? "ready" : "idle");
return null;
}
setStatus("prepare");
var updatedModules = [];
blockingPromises = [];
currentUpdateApplyHandlers = [];
return Promise.all(
Object.keys($hmrDownloadUpdateHandlers$).reduce(function (
promises,
key
) {
$hmrDownloadUpdateHandlers$[key](
update.c,
update.r,
update.m,
promises,
currentUpdateApplyHandlers,
updatedModules
);
return promises;
},
[])
).then(function () {
return waitForBlockingPromises(function () {
if (applyOnUpdate) {
return internalApply(applyOnUpdate);
} else {
setStatus("ready");
return updatedModules;
}
});
});
});
}
function hotApply(options) {
if (currentStatus !== "ready") {
return Promise.resolve().then(function () {
throw new Error("apply() is only allowed in ready status");
});
}
return internalApply(options);
}
function internalApply(options) {
options = options || {};
applyInvalidatedModules();
var results = currentUpdateApplyHandlers.map(function (handler) {
return handler(options);
});
currentUpdateApplyHandlers = undefined;
var errors = results
.map(function (r) {
return r.error;
})
.filter(Boolean);
if (errors.length > 0) {
setStatus("abort");
return Promise.resolve().then(function () {
throw errors[0];
});
}
// Now in "dispose" phase
setStatus("dispose");
results.forEach(function (result) {
if (result.dispose) result.dispose();
});
// Now in "apply" phase
setStatus("apply");
var error;
var reportError = function (err) {
if (!error) error = err;
};
var outdatedModules = [];
results.forEach(function (result) {
if (result.apply) {
var modules = result.apply(reportError);
if (modules) {
for (var i = 0; i < modules.length; i++) {
outdatedModules.push(modules[i]);
}
}
}
});
// handle errors in accept handlers and self accepted module load
if (error) {
setStatus("fail");
return Promise.resolve().then(function () {
throw error;
});
}
if (queuedInvalidatedModules) {
return internalApply(options).then(function (list) {
outdatedModules.forEach(function (moduleId) {
if (list.indexOf(moduleId) < 0) list.push(moduleId);
});
return list;
});
}
setStatus("idle");
return Promise.resolve(outdatedModules);
}
function applyInvalidatedModules() {
if (queuedInvalidatedModules) {
if (!currentUpdateApplyHandlers) currentUpdateApplyHandlers = [];
Object.keys($hmrInvalidateModuleHandlers$).forEach(function (key) {
queuedInvalidatedModules.forEach(function (moduleId) {
$hmrInvalidateModuleHandlers$[key](
moduleId,
currentUpdateApplyHandlers
);
});
});
queuedInvalidatedModules = undefined;
return true;
}
}
};