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require.js
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require.js
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/*
Based in part on Motorola Mobility’s Montage
Copyright (c) 2012, Motorola Mobility LLC. All Rights Reserved.
3-Clause BSD License
https://github.com/motorola-mobility/montage/blob/master/LICENSE.md
*/
/*global bootstrap, define, global */
(function (definition) {
// Boostrapping Browser
if (typeof bootstrap !== "undefined") {
// Window
if (typeof window !== "undefined") {
bootstrap("require", function (require, exports) {
var Promise = require("promise");
var URL = require("mini-url");
definition(exports, Promise, URL);
require("require/browser");
});
// Worker
} else {
bootstrap("require", function (require, exports) {
var Promise = require("promise").Promise;
var URL = require("mini-url");
definition(exports, Promise, URL);
});
}
// Node Server
} else if (typeof process !== "undefined") {
// the parens trick the heuristic scanner for static dependencies, so
// they are not pre-loaded by the asynchronous browser loader
var Promise = (require)("bluebird");
var URL = (require)("url");
definition(exports, Promise, URL);
(require)("./node");
} else {
throw new Error("Can't support require on this platform");
}
})(function (Require, Promise, URL) {
"use strict";
// reassigning causes eval to not use lexical scope.
var globalEval = eval,
/*jshint evil:true */
global = globalEval('this');
/*jshint evil:false */
// Non-CommonJS speced extensions should be marked with an "// EXTENSION"
// comment.
var Map;
if (!global.Map) {
Map = function _Map() {
this._content = Object.create(null);
};
Map.prototype.constructor = Map;
Map.prototype.set = function(key,value) {
this._content[key] = value;
return this;
};
Map.prototype.get = function(key) {
return this.hasOwnProperty.call(this._content,key) ? this._content[key] : null;
};
Map.prototype.has = function(key) {
return key in this._content;
};
}
else {
Map = global.Map;
}
var Module = function Module() {};
Module.prototype.id = null;
Module.prototype.display = null;
Module.prototype.require = null;
Module.prototype.factory = void 0;
Module.prototype.exports = void 0;
Module.prototype.redirect = void 0;
Module.prototype.location = null;
Module.prototype.directory = null;
Module.prototype.injected = false;
Module.prototype.mappingRedirect = void 0;
Module.prototype.type = null;
Module.prototype.text = void 0;
Module.prototype.dependees = null;
Module.prototype.extraDependencies = void 0;
Module.prototype.uuid = null;
var normalizePattern = /^(.*)\.js$/,
normalizeIdCache = new Map();
function normalizeId(id) {
var result;
if (!(result = normalizeIdCache.get(id))) {
result = normalizePattern.exec(id);
result = ( result ? result[1] : id);
normalizeIdCache.set(id, result);
}
return result;
}
function memoize(callback, cache) {
var _memoize = cache.get(callback);
if (!_memoize) {
_memoize = function _memoize(key, arg) {
var result;
if (!cache.has(key)) {
result = callback(key, arg);
cache.set(key, result);
} else {
result = cache.get(key);
}
return result;
};
cache.set(callback,_memoize);
}
return _memoize;
}
function endsWith(string, search, position) {
var stringLength = string.length;
var searchString = String(search);
var searchLength = searchString.length;
var pos = stringLength;
if (position !== undefined) {
// `ToInteger`
pos = position ? Number(position) : 0;
if (pos !== pos) { // better `isNaN`
pos = 0;
}
}
var end = Math.min(Math.max(pos, 0), stringLength);
var start = end - searchLength;
if (start < 0) {
return false;
}
var index = -1;
while (++index < searchLength) {
if (string.charCodeAt(start + index) !== searchString.charCodeAt(index)) {
return false;
}
}
return true;
}
// We need to find the best time to flush _resolveStringtoArray and _resolved once their content isn't needed anymore
var _resolved = new Map();
var _resolveStringtoArray = new Map();
var _target = [];
function _resolveItem(source, part, target) {
/*jshint -W035 */
if (part === EMPTY_STRING || part === DOT) {
} else if (part === DOT_DOT) {
if (target.length) {
target.pop();
}
} else {
target.push(part);
}
/*jshint +W035 */
}
var EMPTY_STRING = "",
SLASH = "/",
DOT = ".",
DOT_DOT = "..";
function resolve(id, baseId) {
if (id === EMPTY_STRING && baseId === EMPTY_STRING) {
return EMPTY_STRING;
}
var resolved = _resolved.get(id) || (_resolved.set(id, (resolved = new Map())) && resolved) || resolved;
var i, ii;
if (!(resolved.has(baseId)) || !(id in resolved.get(baseId))) {
id = String(id);
var source = _resolveStringtoArray.get(id) || (_resolveStringtoArray.set(id, (source = id.split(SLASH))) && source) || source,
parts = _resolveStringtoArray.get(baseId) || (_resolveStringtoArray.set(baseId,(parts = baseId.split(SLASH))) && parts || parts),
resolveItem = _resolveItem;
if (source.length && source[0] === DOT || source[0] === DOT_DOT) {
for (i = 0, ii = parts.length-1; i < ii; i++) {
resolveItem(parts, parts[i], _target);
}
}
for (i = 0, ii = source.length; i < ii; i++) {
resolveItem(source, source[i], _target);
}
if (!resolved.get(baseId)) {
resolved.set(baseId, new Map());
}
resolved.get(baseId).set(id, _target.join(SLASH));
_target.length = 0;
}
return resolved.get(baseId).get(id);
}
var NODE_MODULES_SLASH = "node_modules/";
var SLASH_NODE_MODULES_SLASH = "/node_modules/";
function findLongestDependencyPath(packageName, parent, packageLock) {
var pathParts = parent.split("/"),
directory = NODE_MODULES_SLASH,
bestDirectory = null,
i = 0,
part;
while (packageLock && packageLock.dependencies) {
if (packageName in packageLock.dependencies) {
bestDirectory = directory;
}
i += 2; // skip node_modules
part = pathParts[i];
directory += part;
directory += SLASH_NODE_MODULES_SLASH;
packageLock = packageLock.dependencies[part];
}
if (bestDirectory) {
bestDirectory += packageName;
}
return bestDirectory;
}
var isRelativePattern = /\/$/;
function normalizeDependency(dependency, config, name) {
var configPath, dependencyPath;
config = config || {};
if (typeof dependency === "string") {
dependency = {
location: dependency
};
}
if (dependency.main) {
dependency.location = config.mainPackageLocation;
} else if (dependency.name) {
// if the named dependency has already been found at another
// location, refer to the same eventual instance
// TODO this has to add a test on version
if (config.registry && config.registry.has(dependency.name)) {
dependency.location = config.registry.get(dependency.name);
} else if (config.packageLock) {
configPath = config.location.slice(config.mainPackageLocation.length - 1);
dependencyPath = findLongestDependencyPath(dependency.name, configPath, config.packageLock);
if (dependencyPath) {
dependency.location = URL.resolve(config.mainPackageLocation, dependencyPath);
}
} else if (!dependency.location && config.packagesDirectory) {
// default location
dependency.location = URL.resolve(
config.packagesDirectory,
dependency.name + "/"
);
}
}
if (!dependency.location) {
return dependency; // partially completed
}
// make sure the dependency location has a trailing slash so that
// relative urls will resolve properly
if (!isRelativePattern.test(dependency.location)) {
dependency.location += "/";
}
// resolve the location relative to the current package
if (!Require.isAbsolute(dependency.location)) {
if (!config.location) {
throw new Error(
"Dependency locations must be fully qualified: " +
JSON.stringify(dependency)
);
}
dependency.location = URL.resolve(
config.location,
dependency.location
);
}
// register the package name so the location can be reused
if (dependency.name) {
config.registry.set(dependency.name,dependency.location);
}
return dependency;
}
function processMappingDependencies(dependencies, mappings) {
if (dependencies) {
for(var i=0, keys = Object.keys(dependencies), name;(name = keys[i]);i++) {
if (!mappings[name]) {
// dependencies are equivalent to name and version mappings,
// though the version predicate string is presently ignored
// (TODO)
mappings[name] = {
name: name,
version: dependencies[name]
};
}
}
}
}
function configurePackage(location, description, parent) {
if (!isRelativePattern.test(location)) {
location += "/";
}
var config = Object.create(parent);
config.name = description.name;
config.location = location || Require.getLocation();
config.packageDescription = description;
config.useScriptInjection = description.useScriptInjection;
if (description.production !== void 0) {
config.production = description.production;
}
// explicitly mask definitions and modules, which must
// not apply to child packages
var modules = config.modules = config.modules || {};
var registry = config.registry;
if (config.name !== void 0 && !registry.has(config.name)) {
registry.set(config.name,config.location);
}
// overlay
var redirects,
overlay = description.overlay || {};
// but first, convert "browser" field, as pioneered by Browserify, to
// an overlay
if (typeof description.browser === "string") {
overlay.browser = {
redirects: {"": description.browser}
};
} else if (typeof description.browser === "object") {
var bk, iBk, countBk,
browser = description.browser,
browserKeys = Object.keys(browser);
overlay.browser = {redirects:{}};
redirects = overlay.browser.redirects;
for(iBk=0;(bk = browserKeys[iBk]);iBk++) {
if (browser[bk] !== false) {
redirects[bk] = browser[bk];
}
}
// overlay.browser = {
// redirects: description.browser
// };
}
// overlay continued...
var layer, overlays, engine, name;
overlays = config.overlays = config.overlays || Require.overlays;
for(var i=0, countI=overlays.length;i<countI;i++) {
if (layer = overlay[(engine = overlays[i])]) {
for (name in layer) {
if (layer.hasOwnProperty(name)) {
description[name] = layer[name];
}
}
}
}
delete description.overlay;
config.packagesDirectory = URL.resolve(location, "node_modules/");
// The default "main" module of a package is 'index' by default.
description.main = description.main || 'index';
// main, injects a definition for the main module, with
// only its path. makeRequire goes through special effort
// in deepLoad to re-initialize this definition with the
// loaded definition from the given path.
modules[""] = {
id: "",
redirect: normalizeId(resolve(description.main, "")),
location: config.location
};
//Deal with redirects
redirects = description.redirects;
if (redirects !== void 0) {
for (name in redirects) {
if (redirects.hasOwnProperty(name)) {
modules[name] = {
id: name,
redirect: normalizeId(resolve(redirects[name], name)),
location: URL.resolve(location, name)
};
}
}
}
// mappings, link this package to other packages.
var mappings = description.mappings || {};
// dependencies, devDependencies if not in production
processMappingDependencies(description.dependencies,mappings);
if (!config.production) {
processMappingDependencies(description.devDependencies,mappings);
}
// mappings
for(var m=0, mKeys = Object.keys(mappings);(name = mKeys[m]);m++) {
mappings[name] = normalizeDependency(
mappings[name],
config,
name
);
}
config.mappings = mappings;
return config;
}
//
//
//
var isLowercasePattern = /^[a-z]+$/;
Require.makeRequire = function (config) {
var require, requireForId;
// Configuration defaults:
config = config || {};
config.cache = config.cache || new Map();
config.rootLocation = URL.resolve(config.rootLocation || Require.getLocation(), "./");
config.location = URL.resolve(config.location || config.rootLocation, "./");
config.paths = config.paths || [config.location];
config.mappings = config.mappings || {}; // EXTENSION
config.exposedConfigs = config.exposedConfigs || Require.exposedConfigs;
config.moduleTypes = config.moduleTypes || ["html", "meta", "mjson"];
config.makeLoader = config.makeLoader || Require.makeLoader;
config.load = config.load || config.makeLoader(config);
config.makeCompiler = config.makeCompiler || Require.makeCompiler;
config.executeCompiler = config.executeCompiler || Require.executeCompiler;
config.compile = config.compile || config.makeCompiler(config);
config.parseDependencies = config.parseDependencies || Require.parseDependencies;
config.read = config.read || Require.read;
config.strategy = config.strategy || 'nested';
config.requireById = config.requireById || new Map();
// Modules: { exports, id, location, directory, factory, dependencies,
// dependees, text, type }
var modules = config.modules = config.modules || Object.create(null);
// produces an entry in the module state table, which gets built
// up through loading and execution, ultimately serving as the
// ``module`` free variable inside the corresponding module.
function getModuleDescriptor(id) {
var lookupId = isLowercasePattern.test(id) ? id : id.toLowerCase();
if (!(lookupId in modules)) {
var aModule = modules[lookupId] = new Module();
aModule.id = id;
aModule.display = (config.name || config.location); // EXTENSION
aModule.display += "#"; // EXTENSION
aModule.display += id; // EXTENSION
aModule.require = require;
}
return modules[lookupId];
}
// for preloading modules by their id and exports, useful to
// prevent wasteful multiple instantiation if a module was loaded
// in the bootstrapping process and can be trivially injected into
// the system.
function inject(id, exports) {
var module = getModuleDescriptor(id),
prefix = extractPrefixFromInjectId(id),
mapping,
mappingRedirect;
if (prefix) {
mapping = config.mappings[prefix];
if (id.length > prefix.length) {
mappingRedirect = id.slice(prefix.length + 1);
module.location = URL.resolve(mapping.location, mappingRedirect);
// Make sure the submodule is aware of this injection
if (typeof mapping.mappingRequire === "undefined") {
config.loadPackage(mapping, config)
.then(function (mappingRequire) {
mapping.mappingRequire = mappingRequire;
mappingRequire.inject(mappingRedirect, exports);
});
} else {
mapping.mappingRequire.inject(mappingRedirect, exports);
}
} else {
module.location = mapping.location;
}
} else {
module.location = URL.resolve(config.location, id);
}
module.exports = exports;
module.directory = URL.resolve(module.location, "./");
module.injected = true;
module.redirect = void 0;
module.mappingRedirect = void 0;
module.error = void 0;
// delete module.redirect;
// delete module.mappingRedirect;
}
function extractPrefixFromInjectId(id) {
var mappings = config.mappings;
var prefixes = Object.keys(mappings);
var length = prefixes.length;
var i, prefix;
for (i = 0; i < length; i++) {
prefix = prefixes[i];
if (
id === prefix ||
id.indexOf(prefix) === 0 &&
id.charAt(prefix.length) === "/"
) {
return prefix;
}
}
}
// Ensures a module definition is loaded, compiled, analyzed
var load = memoize(function (topId, viaId) {
var module = getModuleDescriptor(topId);
return Promise.try(function () {
// if not already loaded, already instantiated, or
// configured as a redirection to another module
if (
module.factory === void 0 &&
module.exports === void 0 &&
module.redirect === void 0
) {
//return Promise.try(config.load, [topId, module]);
return config.load(topId, module);
}
})
.then(function () {
// compile and analyze dependencies
return config.compile(module).then(function () {
if (module.redirect !== void 0) {
module.dependencies = module.dependencies || [];
module.dependencies.push(module.redirect);
}
if (module.extraDependencies !== void 0) {
module.dependencies = module.dependencies || [];
Array.prototype.push.apply(module.dependencies, module.extraDependencies);
}
});
});
}, config.cache);
// Load a module definition, and the definitions of its transitive
// dependencies
function deepLoad(topId, viaId, loading) {
// this is a memo of modules already being loaded so we don’t
// data-lock on a cycle of dependencies.
loading = loading || Object.create(null);
// has this all happened before? will it happen again?
if (topId in loading) {
return null; // break the cycle of violence.
}
loading[topId] = true; // this has happened before
return load(topId, viaId)
.then(function deepLoadhen() {
// load the transitive dependencies using the magic of
// recursion.
var promises , depId, iPromise,
module = getModuleDescriptor(topId),
dependencies = module.dependencies,
scopedTopId = topId,
scopedLoading = loading;
if (dependencies && dependencies.length > 0) {
for(var i=0;(depId = dependencies[i]);i++) {
// create dependees set, purely for debug purposes
// if (true) {
// var iModule = getModuleDescriptor(depId);
// var dependees = iModule.dependees = iModule.dependees || {};
// dependees[topId] = true;
// }
if ((iPromise = deepLoad(normalizeId(resolve(depId, scopedTopId)), scopedTopId, scopedLoading))) {
/* jshint expr: true */
promises ? (promises.push ? promises.push(iPromise) :
(promises = [promises, iPromise])) : (promises = iPromise);
/* jshint expr: false */
}
}
}
return promises ? (promises.push === void 0 ? promises :
Promise.all(promises)) : null;
}, function (error) {
getModuleDescriptor(topId).error = error;
});
}
// Initializes a module by executing the factory function with a new
// module "exports" object.
function getExports(topId, viaId) {
var module = getModuleDescriptor(topId);
// check for consistent case convention
if (module.id !== topId) {
throw new Error(
"Can't require module " + JSON.stringify(module.id) +
" by alternate spelling " + JSON.stringify(topId)
);
}
// check for load error
if (module.error) {
var error = new Error(
"Can't require module " + JSON.stringify(module.id) +
" via " + JSON.stringify(viaId) +
" because " + module.error.message
);
error.cause = module.error;
throw error;
}
// handle redirects
if (module.redirect !== void 0) {
return getExports(module.redirect, viaId);
}
// handle cross-package linkage
if (module.mappingRedirect !== void 0) {
return module.mappingRequire(module.mappingRedirect, viaId);
}
// do not reinitialize modules
if (module.exports !== void 0) {
return module.exports;
}
// do not initialize modules that do not define a factory function
if (module.factory === void 0) {
throw new Error(
"Can't require module " + JSON.stringify(topId) +
" via " + JSON.stringify(viaId)
);
}
module.directory = URL.resolve(module.location, "./"); // EXTENSION
module.exports = {};
var returnValue;
try {
// Execute the factory function:
returnValue = config.executeCompiler(module.factory, requireForId(topId), module.exports, module);
} catch (_error) {
// Delete the exports so that the factory is run again if this
// module is required again
//delete module.exports;
module.exports = void 0;
throw _error;
}
// EXTENSION
if (returnValue !== void 0) {
module.exports = returnValue;
}
return module.exports;
}
// Finds the internal identifier for a module in a subpackage
// The `seen` object is a memo of the packages we have seen to avoid
// infinite recursion of cyclic package dependencies. It also causes
// the function to return null instead of throwing an exception. I’m
// guessing that throwing exceptions *and* being recursive would be
// too much performance evil for one function.
function identify(id2, require2, seen) {
var location = config.location;
if (require2.location === location) {
return id2;
}
var internal = !!seen;
seen = seen || new Map();
if (seen.has(location)) {
return null; // break the cycle of violence.
}
seen.set(location,true);
/*jshint -W089 */
for (var name in config.mappings) {
var mapping = config.mappings[name];
location = mapping.location;
if (!config.hasPackage(location)) {
continue;
}
var candidate = config.getPackage(location);
var id1 = candidate.identify(id2, require2, seen);
if (id1 === null) {
continue;
} else if (id1 === "") {
return name;
} else {
name += "/";
name += id1;
return name;
}
}
if (internal) {
return null;
} else {
throw new Error(
"Can't identify " + id2 + " from " + require2.location
);
}
/*jshint +W089 */
}
// Creates a unique require function for each module that encapsulates
// that module's id for resolving relative module IDs against.
function makeRequire(viaId) {
// Main synchronously executing "require()" function
var require = function require(id) {
var topId = normalizeId(resolve(id, viaId));
return getExports(topId, viaId);
};
require.viaId = viaId;
// Asynchronous "require.async()" which ensures async executation
// (even with synchronous loaders)
require.async = function(id) {
var topId = normalizeId(resolve(id, viaId));
return deepLoad(topId, viaId).then(function () {
return require(topId);
});
};
require.resolve = function (id) {
return normalizeId(resolve(id, viaId));
};
require.getModule = getModuleDescriptor; // XXX deprecated, use:
require.getModuleDescriptor = getModuleDescriptor;
require.load = load;
require.deepLoad = deepLoad;
require.loadPackage = function (dependency, givenConfig) {
if (givenConfig) { // explicit configuration, fresh environment
return Require.loadPackage(dependency, givenConfig);
} else { // inherited environment
return config.loadPackage(dependency, config);
}
};
require.hasPackage = function (dependency) {
return config.hasPackage(dependency);
};
require.getPackage = function (dependency) {
return config.getPackage(dependency);
};
require.isMainPackage = function () {
return require.location === config.mainPackageLocation;
};
require.injectPackageDescription = function (location, description) {
Require.injectPackageDescription(location, description, config);
};
require.injectPackageDescriptionLocation = function (location, descriptionLocation) {
Require.injectPackageDescriptionLocation(location, descriptionLocation, config);
};
require.injectMapping = function (dependency, name) {
dependency = normalizeDependency(dependency, config, name);
name = name || dependency.name;
config.mappings[name] = dependency;
};
require.injectDependency = function (name) {
require.injectMapping({name: name}, name);
};
require.identify = identify;
require.inject = inject;
var exposedConfigs = config.exposedConfigs;
for(var i = 0, countI = exposedConfigs.length; i < countI; i++) {
require[exposedConfigs[i]] = config[exposedConfigs[i]];
}
require.config = config;
require.read = config.read;
return require;
}
config.requireForId = requireForId = memoize(makeRequire,config.requireById);
require = makeRequire("");
return require;
};
Require.injectPackageDescription = function (location, description, config) {
var descriptions =
config.descriptions =
config.descriptions || {};
descriptions[location] = Promise.resolve(description);
};
Require.injectLoadedPackageDescription = function (location, packageDescription, config, require) {
var subconfig = configurePackage(
location,
packageDescription,
config
);
var pkg;
if (typeof require === "function") {
pkg = require;
} else {
if (Require.delegate && Require.delegate.willCreatePackage) {
pkg = Require.delegate.willCreatePackage(location, packageDescription, subconfig);
}
if (!pkg) {
pkg = Require.makeRequire(subconfig);
if (Require.delegate && Require.delegate.didCreatePackage) {
Require.delegate.didCreatePackage(subconfig);
}
}
}
config.packages[location] = pkg;
return pkg;
};
Require.injectPackageDescriptionLocation = function (location, descriptionLocation, config) {
var descriptionLocations =
config.descriptionLocations =
config.descriptionLocations || {};
descriptionLocations[location] = descriptionLocation;
};
Require.loadPackageDescription = function (dependency, config) {
var location = dependency.location,
descriptions, promise;
descriptions =
config.descriptions =
config.descriptions || {};
if (descriptions[location] !== void 0) {
return descriptions[location];
}
promise = tryPackage(location, dependency, config);
descriptions[location] = promise;
promise.then(function (result) {
// Dependency location may change while being loaded, cache
// the description at its final location too
descriptions[dependency.location] = promise;
return result;
});
return (descriptions[location] = promise);
};
// 'node_modules' character codes reversed
var nmChars = [ 115, 101, 108, 117, 100, 111, 109, 95, 101, 100, 111, 110 ];
var nmLen = nmChars.length;
var CHAR_FORWARD_SLASH = 47;
/**
* Generate the next location that a node_module could be located at.
* The next pair of /node_modules/ path parts are replaced with a single
* /node_modules/, resulting in the same location, one package up.
* This is more or less equivalent to doing
* `location.replace(/node_modules\/[^/]+\/node_modules/, "node_modules")`,
* except that the replacement is made from the end of the string rather
* than the front, and performs better than regex.
* @param {string} location
* @return {string|null}
*/
var nextModuleLocation = function (location) {
var end = location.length - 1,
rest = end,
p = 0,
nmFound = 0,
i, code;
for (i = end; i >= 0 && nmFound < 2; --i) {
code = location.charCodeAt(i);
if (code === CHAR_FORWARD_SLASH) {
if (p === nmLen) {
nmFound++;
} else if (nmFound === 0) {
rest = i + 1;
}
p = 0;
} else if (p !== -1) {
if (nmChars[p] === code) {
++p;
} else {
p = -1;
}
}
}
if (nmFound === 2) {
return location.substring(0, i + nmLen + 3) + location.substring(rest);
}
return null;
};
/**
* Try loading a package.json file. If the package.json cannot be read
* at the given location, the next possible package location is tried
* until all possibilities are exhausted.
*
* This is what provides support for projects installed with npm 3+.
*/
var tryPackage = function (location, dependency, config) {
var descriptionLocations, descriptionLocation;
descriptionLocations = config.descriptionLocations = config.descriptionLocations || {};
if (descriptionLocations[location]) {
descriptionLocation = descriptionLocations[location];
} else {
descriptionLocation = URL.resolve(location, "package.json");
}
var promise;
if (Require.delegate && typeof Require.delegate.requireWillLoadPackageDescriptionAtLocation === "function") {
promise = Require.delegate.requireWillLoadPackageDescriptionAtLocation(descriptionLocation,dependency, config);
}
if (!promise) {
promise = (config.read || Require.read)(descriptionLocation);
}
return promise.then(function (content) {
dependency.location = location;
try {
return JSON.parse(content);
} catch (error) {
error.message = "Loading package description at '" + location + "' failed cause: " + error.message + " in " + JSON.stringify(descriptionLocation);
throw error;
}
}, function (err) {
var nextLocation = nextModuleLocation(location);
if (nextLocation) {
return tryPackage(nextLocation, dependency, config);
} else {
throw err;
}
});
};
Require.loadPackageLock = function (dependency, config) {
config = config || {};
var read = config.read || Require.read,
packageLockLocation = URL.resolve(dependency.location, "package-lock.json");
return read(packageLockLocation)
.then(function (content) {
try {
return JSON.parse(content);
} catch (error) {
error.message = "Unable to parse package-lock.json at '" + dependency.location + "'";
throw error;
}
}, function () {
return null;
});
};
Require.loadPackage = function (dependency, config, packageDescription) {
config = config || {
location: URL.resolve(Require.getLocation(), dependency)
};
dependency = normalizeDependency(dependency, config);
if (!dependency.location) {
throw new Error("Can't find dependency: " + JSON.stringify(dependency));
}
var location = dependency.location;
config = Object.create(config || null);
var loadingPackages = config.loadingPackages = config.loadingPackages || {};
var loadedPackages = config.packages = {};
var registry = config.registry = config.registry || new Map();
config.mainPackageLocation = config.mainPackageLocation || location;
config.hasPackage = function (dependency) {
if(!dependency) {
return false;
}
dependency = normalizeDependency(dependency, config);
if (!dependency.location) {