mirror of
https://github.com/systemjs/systemjs.git
synced 2026-01-18 14:53:14 +00:00
1761 lines
51 KiB
JavaScript
1761 lines
51 KiB
JavaScript
/*
|
|
* SystemJS v0.18.2
|
|
*/
|
|
(function(__global) {
|
|
|
|
var isWorker = typeof window == 'undefined' && typeof self != 'undefined' && typeof importScripts != 'undefined';
|
|
var isBrowser = typeof window != 'undefined' && typeof document != 'undefined';
|
|
var isWindows = typeof process != 'undefined' && !!process.platform.match(/^win/);
|
|
|
|
if (!__global.console)
|
|
__global.console = { assert: function() {} };
|
|
|
|
// IE8 support
|
|
var indexOf = Array.prototype.indexOf || function(item) {
|
|
for (var i = 0, thisLen = this.length; i < thisLen; i++) {
|
|
if (this[i] === item) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
};
|
|
|
|
var defineProperty;
|
|
(function () {
|
|
try {
|
|
if (!!Object.defineProperty({}, 'a', {}))
|
|
defineProperty = Object.defineProperty;
|
|
}
|
|
catch (e) {
|
|
defineProperty = function(obj, prop, opt) {
|
|
try {
|
|
obj[prop] = opt.value || opt.get.call(obj);
|
|
}
|
|
catch(e) {}
|
|
}
|
|
}
|
|
})();
|
|
|
|
function addToError(err, msg) {
|
|
var newErr;
|
|
if (err instanceof Error) {
|
|
var newErr = new Error(err.message, err.fileName, err.lineNumber);
|
|
if (isBrowser) {
|
|
newErr.message = err.message + '\n\t' + msg;
|
|
newErr.stack = err.stack;
|
|
}
|
|
else {
|
|
// node errors only look correct with the stack modified
|
|
newErr.message = err.message;
|
|
newErr.stack = err.stack + '\n\t' + msg;
|
|
}
|
|
}
|
|
else {
|
|
newErr = err + '\n\t' + msg;
|
|
}
|
|
|
|
return newErr;
|
|
}
|
|
|
|
function __eval(source, debugName, context) {
|
|
try {
|
|
new Function(source).call(context);
|
|
}
|
|
catch(e) {
|
|
throw addToError(e, 'Evaluating ' + debugName);
|
|
}
|
|
}
|
|
|
|
var baseURI;
|
|
// environent baseURI detection
|
|
if (typeof document != 'undefined' && document.getElementsByTagName) {
|
|
baseURI = document.baseURI;
|
|
|
|
if (!baseURI) {
|
|
var bases = document.getElementsByTagName('base');
|
|
baseURI = bases[0] && bases[0].href || window.location.href;
|
|
}
|
|
|
|
// sanitize out the hash and querystring
|
|
baseURI = baseURI.split('#')[0].split('?')[0];
|
|
baseURI = baseURI.substr(0, baseURI.lastIndexOf('/') + 1);
|
|
}
|
|
else if (typeof process != 'undefined' && process.cwd) {
|
|
baseURI = 'file://' + (isWindows ? '/' : '') + process.cwd() + '/';
|
|
if (isWindows)
|
|
baseURI = baseURI.replace(/\\/g, '/');
|
|
}
|
|
else if (typeof location != 'undefined') {
|
|
baseURI = __global.location.href;
|
|
}
|
|
else {
|
|
throw new TypeError('No environment baseURI');
|
|
}
|
|
|
|
var URL = __global.URL;
|
|
try {
|
|
new URL('test:///').protocol == 'test:';
|
|
}
|
|
catch(e) {
|
|
URL = URLPolyfill;
|
|
}
|
|
/*
|
|
*********************************************************************************************
|
|
|
|
Dynamic Module Loader Polyfill
|
|
|
|
- Implemented exactly to the former 2014-08-24 ES6 Specification Draft Rev 27, Section 15
|
|
http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#august_24_2014_draft_rev_27
|
|
|
|
- Functions are commented with their spec numbers, with spec differences commented.
|
|
|
|
- Spec bugs are commented in this code with links.
|
|
|
|
- Abstract functions have been combined where possible, and their associated functions
|
|
commented.
|
|
|
|
- Realm implementation is entirely omitted.
|
|
|
|
*********************************************************************************************
|
|
*/
|
|
|
|
function Module() {}
|
|
function Loader(options) {
|
|
this._loader = {
|
|
loaderObj: this,
|
|
loads: [],
|
|
modules: {},
|
|
importPromises: {},
|
|
moduleRecords: {}
|
|
};
|
|
|
|
// 26.3.3.6
|
|
defineProperty(this, 'global', {
|
|
get: function() {
|
|
return __global;
|
|
}
|
|
});
|
|
|
|
// 26.3.3.13 realm not implemented
|
|
}
|
|
|
|
(function() {
|
|
|
|
// Some Helpers
|
|
|
|
// logs a linkset snapshot for debugging
|
|
/* function snapshot(loader) {
|
|
console.log('---Snapshot---');
|
|
for (var i = 0; i < loader.loads.length; i++) {
|
|
var load = loader.loads[i];
|
|
var linkSetLog = ' ' + load.name + ' (' + load.status + '): ';
|
|
|
|
for (var j = 0; j < load.linkSets.length; j++) {
|
|
linkSetLog += '{' + logloads(load.linkSets[j].loads) + '} ';
|
|
}
|
|
console.log(linkSetLog);
|
|
}
|
|
console.log('');
|
|
}
|
|
function logloads(loads) {
|
|
var log = '';
|
|
for (var k = 0; k < loads.length; k++)
|
|
log += loads[k].name + (k != loads.length - 1 ? ' ' : '');
|
|
return log;
|
|
} */
|
|
|
|
|
|
/* function checkInvariants() {
|
|
// see https://bugs.ecmascript.org/show_bug.cgi?id=2603#c1
|
|
|
|
var loads = System._loader.loads;
|
|
var linkSets = [];
|
|
|
|
for (var i = 0; i < loads.length; i++) {
|
|
var load = loads[i];
|
|
console.assert(load.status == 'loading' || load.status == 'loaded', 'Each load is loading or loaded');
|
|
|
|
for (var j = 0; j < load.linkSets.length; j++) {
|
|
var linkSet = load.linkSets[j];
|
|
|
|
for (var k = 0; k < linkSet.loads.length; k++)
|
|
console.assert(loads.indexOf(linkSet.loads[k]) != -1, 'linkSet loads are a subset of loader loads');
|
|
|
|
if (linkSets.indexOf(linkSet) == -1)
|
|
linkSets.push(linkSet);
|
|
}
|
|
}
|
|
|
|
for (var i = 0; i < loads.length; i++) {
|
|
var load = loads[i];
|
|
for (var j = 0; j < linkSets.length; j++) {
|
|
var linkSet = linkSets[j];
|
|
|
|
if (linkSet.loads.indexOf(load) != -1)
|
|
console.assert(load.linkSets.indexOf(linkSet) != -1, 'linkSet contains load -> load contains linkSet');
|
|
|
|
if (load.linkSets.indexOf(linkSet) != -1)
|
|
console.assert(linkSet.loads.indexOf(load) != -1, 'load contains linkSet -> linkSet contains load');
|
|
}
|
|
}
|
|
|
|
for (var i = 0; i < linkSets.length; i++) {
|
|
var linkSet = linkSets[i];
|
|
for (var j = 0; j < linkSet.loads.length; j++) {
|
|
var load = linkSet.loads[j];
|
|
|
|
for (var k = 0; k < load.dependencies.length; k++) {
|
|
var depName = load.dependencies[k].value;
|
|
var depLoad;
|
|
for (var l = 0; l < loads.length; l++) {
|
|
if (loads[l].name != depName)
|
|
continue;
|
|
depLoad = loads[l];
|
|
break;
|
|
}
|
|
|
|
// loading records are allowed not to have their dependencies yet
|
|
// if (load.status != 'loading')
|
|
// console.assert(depLoad, 'depLoad found');
|
|
|
|
// console.assert(linkSet.loads.indexOf(depLoad) != -1, 'linkset contains all dependencies');
|
|
}
|
|
}
|
|
}
|
|
} */
|
|
|
|
// 15.2.3 - Runtime Semantics: Loader State
|
|
|
|
// 15.2.3.11
|
|
function createLoaderLoad(object) {
|
|
return {
|
|
// modules is an object for ES5 implementation
|
|
modules: {},
|
|
loads: [],
|
|
loaderObj: object
|
|
};
|
|
}
|
|
|
|
// 15.2.3.2 Load Records and LoadRequest Objects
|
|
|
|
// 15.2.3.2.1
|
|
function createLoad(name) {
|
|
return {
|
|
status: 'loading',
|
|
name: name,
|
|
linkSets: [],
|
|
dependencies: [],
|
|
metadata: {}
|
|
};
|
|
}
|
|
|
|
// 15.2.3.2.2 createLoadRequestObject, absorbed into calling functions
|
|
|
|
// 15.2.4
|
|
|
|
// 15.2.4.1
|
|
function loadModule(loader, name, options) {
|
|
return new Promise(asyncStartLoadPartwayThrough({
|
|
step: options.address ? 'fetch' : 'locate',
|
|
loader: loader,
|
|
moduleName: name,
|
|
// allow metadata for import https://bugs.ecmascript.org/show_bug.cgi?id=3091
|
|
moduleMetadata: options && options.metadata || {},
|
|
moduleSource: options.source,
|
|
moduleAddress: options.address
|
|
}));
|
|
}
|
|
|
|
// 15.2.4.2
|
|
function requestLoad(loader, request, refererName, refererAddress) {
|
|
// 15.2.4.2.1 CallNormalize
|
|
return new Promise(function(resolve, reject) {
|
|
resolve(loader.loaderObj.normalize(request, refererName, refererAddress));
|
|
})
|
|
// 15.2.4.2.2 GetOrCreateLoad
|
|
.then(function(name) {
|
|
var load;
|
|
if (loader.modules[name]) {
|
|
load = createLoad(name);
|
|
load.status = 'linked';
|
|
// https://bugs.ecmascript.org/show_bug.cgi?id=2795
|
|
load.module = loader.modules[name];
|
|
return load;
|
|
}
|
|
|
|
for (var i = 0, l = loader.loads.length; i < l; i++) {
|
|
load = loader.loads[i];
|
|
if (load.name != name)
|
|
continue;
|
|
console.assert(load.status == 'loading' || load.status == 'loaded', 'loading or loaded');
|
|
return load;
|
|
}
|
|
|
|
load = createLoad(name);
|
|
loader.loads.push(load);
|
|
|
|
proceedToLocate(loader, load);
|
|
|
|
return load;
|
|
});
|
|
}
|
|
|
|
// 15.2.4.3
|
|
function proceedToLocate(loader, load) {
|
|
proceedToFetch(loader, load,
|
|
Promise.resolve()
|
|
// 15.2.4.3.1 CallLocate
|
|
.then(function() {
|
|
return loader.loaderObj.locate({ name: load.name, metadata: load.metadata });
|
|
})
|
|
);
|
|
}
|
|
|
|
// 15.2.4.4
|
|
function proceedToFetch(loader, load, p) {
|
|
proceedToTranslate(loader, load,
|
|
p
|
|
// 15.2.4.4.1 CallFetch
|
|
.then(function(address) {
|
|
// adjusted, see https://bugs.ecmascript.org/show_bug.cgi?id=2602
|
|
if (load.status != 'loading')
|
|
return;
|
|
load.address = address;
|
|
|
|
return loader.loaderObj.fetch({ name: load.name, metadata: load.metadata, address: address });
|
|
})
|
|
);
|
|
}
|
|
|
|
var anonCnt = 0;
|
|
|
|
// 15.2.4.5
|
|
function proceedToTranslate(loader, load, p) {
|
|
p
|
|
// 15.2.4.5.1 CallTranslate
|
|
.then(function(source) {
|
|
if (load.status != 'loading')
|
|
return;
|
|
|
|
return Promise.resolve(loader.loaderObj.translate({ name: load.name, metadata: load.metadata, address: load.address, source: source }))
|
|
|
|
// 15.2.4.5.2 CallInstantiate
|
|
.then(function(source) {
|
|
load.source = source;
|
|
return loader.loaderObj.instantiate({ name: load.name, metadata: load.metadata, address: load.address, source: source });
|
|
})
|
|
|
|
// 15.2.4.5.3 InstantiateSucceeded
|
|
.then(function(instantiateResult) {
|
|
if (instantiateResult === undefined) {
|
|
load.address = load.address || '<Anonymous Module ' + ++anonCnt + '>';
|
|
|
|
// instead of load.kind, use load.isDeclarative
|
|
load.isDeclarative = true;
|
|
return transpile.call(loader.loaderObj, load)
|
|
.then(function(transpiled) {
|
|
// Hijack System.register to set declare function
|
|
var curSystem = __global.System;
|
|
var curRegister = curSystem.register;
|
|
curSystem.register = function(name, deps, declare) {
|
|
if (typeof name != 'string') {
|
|
declare = deps;
|
|
deps = name;
|
|
}
|
|
// store the registered declaration as load.declare
|
|
// store the deps as load.deps
|
|
load.declare = declare;
|
|
load.depsList = deps;
|
|
}
|
|
// empty {} context is closest to undefined 'this' we can get
|
|
__eval(transpiled, load.address, {});
|
|
curSystem.register = curRegister;
|
|
});
|
|
}
|
|
else if (typeof instantiateResult == 'object') {
|
|
load.depsList = instantiateResult.deps || [];
|
|
load.execute = instantiateResult.execute;
|
|
load.isDeclarative = false;
|
|
}
|
|
else
|
|
throw TypeError('Invalid instantiate return value');
|
|
})
|
|
// 15.2.4.6 ProcessLoadDependencies
|
|
.then(function() {
|
|
load.dependencies = [];
|
|
var depsList = load.depsList;
|
|
|
|
var loadPromises = [];
|
|
for (var i = 0, l = depsList.length; i < l; i++) (function(request, index) {
|
|
loadPromises.push(
|
|
requestLoad(loader, request, load.name, load.address)
|
|
|
|
// 15.2.4.6.1 AddDependencyLoad (load is parentLoad)
|
|
.then(function(depLoad) {
|
|
|
|
// adjusted from spec to maintain dependency order
|
|
// this is due to the System.register internal implementation needs
|
|
load.dependencies[index] = {
|
|
key: request,
|
|
value: depLoad.name
|
|
};
|
|
|
|
if (depLoad.status != 'linked') {
|
|
var linkSets = load.linkSets.concat([]);
|
|
for (var i = 0, l = linkSets.length; i < l; i++)
|
|
addLoadToLinkSet(linkSets[i], depLoad);
|
|
}
|
|
|
|
// console.log('AddDependencyLoad ' + depLoad.name + ' for ' + load.name);
|
|
// snapshot(loader);
|
|
})
|
|
);
|
|
})(depsList[i], i);
|
|
|
|
return Promise.all(loadPromises);
|
|
})
|
|
|
|
// 15.2.4.6.2 LoadSucceeded
|
|
.then(function() {
|
|
// console.log('LoadSucceeded ' + load.name);
|
|
// snapshot(loader);
|
|
|
|
console.assert(load.status == 'loading', 'is loading');
|
|
|
|
load.status = 'loaded';
|
|
|
|
var linkSets = load.linkSets.concat([]);
|
|
for (var i = 0, l = linkSets.length; i < l; i++)
|
|
updateLinkSetOnLoad(linkSets[i], load);
|
|
});
|
|
})
|
|
// 15.2.4.5.4 LoadFailed
|
|
['catch'](function(exc) {
|
|
load.status = 'failed';
|
|
load.exception = exc;
|
|
|
|
var linkSets = load.linkSets.concat([]);
|
|
for (var i = 0, l = linkSets.length; i < l; i++) {
|
|
linkSetFailed(linkSets[i], load, exc);
|
|
}
|
|
|
|
console.assert(load.linkSets.length == 0, 'linkSets not removed');
|
|
});
|
|
}
|
|
|
|
// 15.2.4.7 PromiseOfStartLoadPartwayThrough absorbed into calling functions
|
|
|
|
// 15.2.4.7.1
|
|
function asyncStartLoadPartwayThrough(stepState) {
|
|
return function(resolve, reject) {
|
|
var loader = stepState.loader;
|
|
var name = stepState.moduleName;
|
|
var step = stepState.step;
|
|
|
|
if (loader.modules[name])
|
|
throw new TypeError('"' + name + '" already exists in the module table');
|
|
|
|
// adjusted to pick up existing loads
|
|
var existingLoad;
|
|
for (var i = 0, l = loader.loads.length; i < l; i++) {
|
|
if (loader.loads[i].name == name) {
|
|
existingLoad = loader.loads[i];
|
|
|
|
if(step == 'translate' && !existingLoad.source) {
|
|
existingLoad.address = stepState.moduleAddress;
|
|
proceedToTranslate(loader, existingLoad, Promise.resolve(stepState.moduleSource));
|
|
}
|
|
|
|
return existingLoad.linkSets[0].done.then(function() {
|
|
resolve(existingLoad);
|
|
});
|
|
}
|
|
}
|
|
|
|
var load = createLoad(name);
|
|
|
|
load.metadata = stepState.moduleMetadata;
|
|
|
|
var linkSet = createLinkSet(loader, load);
|
|
|
|
loader.loads.push(load);
|
|
|
|
resolve(linkSet.done);
|
|
|
|
if (step == 'locate')
|
|
proceedToLocate(loader, load);
|
|
|
|
else if (step == 'fetch')
|
|
proceedToFetch(loader, load, Promise.resolve(stepState.moduleAddress));
|
|
|
|
else {
|
|
console.assert(step == 'translate', 'translate step');
|
|
load.address = stepState.moduleAddress;
|
|
proceedToTranslate(loader, load, Promise.resolve(stepState.moduleSource));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Declarative linking functions run through alternative implementation:
|
|
// 15.2.5.1.1 CreateModuleLinkageRecord not implemented
|
|
// 15.2.5.1.2 LookupExport not implemented
|
|
// 15.2.5.1.3 LookupModuleDependency not implemented
|
|
|
|
// 15.2.5.2.1
|
|
function createLinkSet(loader, startingLoad) {
|
|
var linkSet = {
|
|
loader: loader,
|
|
loads: [],
|
|
startingLoad: startingLoad, // added see spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
|
|
loadingCount: 0
|
|
};
|
|
linkSet.done = new Promise(function(resolve, reject) {
|
|
linkSet.resolve = resolve;
|
|
linkSet.reject = reject;
|
|
});
|
|
addLoadToLinkSet(linkSet, startingLoad);
|
|
return linkSet;
|
|
}
|
|
// 15.2.5.2.2
|
|
function addLoadToLinkSet(linkSet, load) {
|
|
console.assert(load.status == 'loading' || load.status == 'loaded', 'loading or loaded on link set');
|
|
|
|
for (var i = 0, l = linkSet.loads.length; i < l; i++)
|
|
if (linkSet.loads[i] == load)
|
|
return;
|
|
|
|
linkSet.loads.push(load);
|
|
load.linkSets.push(linkSet);
|
|
|
|
// adjustment, see https://bugs.ecmascript.org/show_bug.cgi?id=2603
|
|
if (load.status != 'loaded') {
|
|
linkSet.loadingCount++;
|
|
}
|
|
|
|
var loader = linkSet.loader;
|
|
|
|
for (var i = 0, l = load.dependencies.length; i < l; i++) {
|
|
var name = load.dependencies[i].value;
|
|
|
|
if (loader.modules[name])
|
|
continue;
|
|
|
|
for (var j = 0, d = loader.loads.length; j < d; j++) {
|
|
if (loader.loads[j].name != name)
|
|
continue;
|
|
|
|
addLoadToLinkSet(linkSet, loader.loads[j]);
|
|
break;
|
|
}
|
|
}
|
|
// console.log('add to linkset ' + load.name);
|
|
// snapshot(linkSet.loader);
|
|
}
|
|
|
|
// linking errors can be generic or load-specific
|
|
// this is necessary for debugging info
|
|
function doLink(linkSet) {
|
|
var error = false;
|
|
try {
|
|
link(linkSet, function(load, exc) {
|
|
linkSetFailed(linkSet, load, exc);
|
|
error = true;
|
|
});
|
|
}
|
|
catch(e) {
|
|
linkSetFailed(linkSet, null, e);
|
|
error = true;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
// 15.2.5.2.3
|
|
function updateLinkSetOnLoad(linkSet, load) {
|
|
// console.log('update linkset on load ' + load.name);
|
|
// snapshot(linkSet.loader);
|
|
|
|
console.assert(load.status == 'loaded' || load.status == 'linked', 'loaded or linked');
|
|
|
|
linkSet.loadingCount--;
|
|
|
|
if (linkSet.loadingCount > 0)
|
|
return;
|
|
|
|
// adjusted for spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
|
|
var startingLoad = linkSet.startingLoad;
|
|
|
|
// non-executing link variation for loader tracing
|
|
// on the server. Not in spec.
|
|
/***/
|
|
if (linkSet.loader.loaderObj.execute === false) {
|
|
var loads = [].concat(linkSet.loads);
|
|
for (var i = 0, l = loads.length; i < l; i++) {
|
|
var load = loads[i];
|
|
load.module = !load.isDeclarative ? {
|
|
module: _newModule({})
|
|
} : {
|
|
name: load.name,
|
|
module: _newModule({}),
|
|
evaluated: true
|
|
};
|
|
load.status = 'linked';
|
|
finishLoad(linkSet.loader, load);
|
|
}
|
|
return linkSet.resolve(startingLoad);
|
|
}
|
|
/***/
|
|
|
|
var abrupt = doLink(linkSet);
|
|
|
|
if (abrupt)
|
|
return;
|
|
|
|
console.assert(linkSet.loads.length == 0, 'loads cleared');
|
|
|
|
linkSet.resolve(startingLoad);
|
|
}
|
|
|
|
// 15.2.5.2.4
|
|
function linkSetFailed(linkSet, load, exc) {
|
|
var loader = linkSet.loader;
|
|
|
|
if (load) {
|
|
if (load && linkSet.loads[0].name != load.name)
|
|
exc = addToError(exc, 'Error loading ' + load.name + ' from ' + linkSet.loads[0].name);
|
|
|
|
if (load)
|
|
exc = addToError(exc, 'Error loading ' + load.name);
|
|
}
|
|
else {
|
|
exc = addToError(exc, 'Error linking ' + linkSet.loads[0].name);
|
|
}
|
|
|
|
|
|
var loads = linkSet.loads.concat([]);
|
|
for (var i = 0, l = loads.length; i < l; i++) {
|
|
var load = loads[i];
|
|
|
|
// store all failed load records
|
|
loader.loaderObj.failed = loader.loaderObj.failed || [];
|
|
if (indexOf.call(loader.loaderObj.failed, load) == -1)
|
|
loader.loaderObj.failed.push(load);
|
|
|
|
var linkIndex = indexOf.call(load.linkSets, linkSet);
|
|
console.assert(linkIndex != -1, 'link not present');
|
|
load.linkSets.splice(linkIndex, 1);
|
|
if (load.linkSets.length == 0) {
|
|
var globalLoadsIndex = indexOf.call(linkSet.loader.loads, load);
|
|
if (globalLoadsIndex != -1)
|
|
linkSet.loader.loads.splice(globalLoadsIndex, 1);
|
|
}
|
|
}
|
|
linkSet.reject(exc);
|
|
}
|
|
|
|
// 15.2.5.2.5
|
|
function finishLoad(loader, load) {
|
|
// add to global trace if tracing
|
|
if (loader.loaderObj.trace) {
|
|
if (!loader.loaderObj.loads)
|
|
loader.loaderObj.loads = {};
|
|
var depMap = {};
|
|
load.dependencies.forEach(function(dep) {
|
|
depMap[dep.key] = dep.value;
|
|
});
|
|
loader.loaderObj.loads[load.name] = {
|
|
name: load.name,
|
|
deps: load.dependencies.map(function(dep){ return dep.key }),
|
|
depMap: depMap,
|
|
address: load.address,
|
|
metadata: load.metadata,
|
|
source: load.source,
|
|
kind: load.isDeclarative ? 'declarative' : 'dynamic'
|
|
};
|
|
}
|
|
// if not anonymous, add to the module table
|
|
if (load.name) {
|
|
console.assert(!loader.modules[load.name], 'load not in module table');
|
|
loader.modules[load.name] = load.module;
|
|
}
|
|
var loadIndex = indexOf.call(loader.loads, load);
|
|
if (loadIndex != -1)
|
|
loader.loads.splice(loadIndex, 1);
|
|
for (var i = 0, l = load.linkSets.length; i < l; i++) {
|
|
loadIndex = indexOf.call(load.linkSets[i].loads, load);
|
|
if (loadIndex != -1)
|
|
load.linkSets[i].loads.splice(loadIndex, 1);
|
|
}
|
|
load.linkSets.splice(0, load.linkSets.length);
|
|
}
|
|
|
|
function doDynamicExecute(linkSet, load, linkError) {
|
|
try {
|
|
var module = load.execute();
|
|
}
|
|
catch(e) {
|
|
linkError(load, e);
|
|
return;
|
|
}
|
|
if (!module || !(module instanceof Module))
|
|
linkError(load, new TypeError('Execution must define a Module instance'));
|
|
else
|
|
return module;
|
|
}
|
|
|
|
// 26.3 Loader
|
|
|
|
// 26.3.1.1
|
|
// defined at top
|
|
|
|
// importPromises adds ability to import a module twice without error - https://bugs.ecmascript.org/show_bug.cgi?id=2601
|
|
function createImportPromise(loader, name, promise) {
|
|
var importPromises = loader._loader.importPromises;
|
|
return importPromises[name] = promise.then(function(m) {
|
|
importPromises[name] = undefined;
|
|
return m;
|
|
}, function(e) {
|
|
importPromises[name] = undefined;
|
|
throw e;
|
|
});
|
|
}
|
|
|
|
Loader.prototype = {
|
|
// 26.3.3.1
|
|
constructor: Loader,
|
|
// 26.3.3.2
|
|
define: function(name, source, options) {
|
|
// check if already defined
|
|
if (this._loader.importPromises[name])
|
|
throw new TypeError('Module is already loading.');
|
|
return createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
|
|
step: 'translate',
|
|
loader: this._loader,
|
|
moduleName: name,
|
|
moduleMetadata: options && options.metadata || {},
|
|
moduleSource: source,
|
|
moduleAddress: options && options.address
|
|
})));
|
|
},
|
|
// 26.3.3.3
|
|
'delete': function(name) {
|
|
var loader = this._loader;
|
|
delete loader.importPromises[name];
|
|
delete loader.moduleRecords[name];
|
|
return loader.modules[name] ? delete loader.modules[name] : false;
|
|
},
|
|
// 26.3.3.4 entries not implemented
|
|
// 26.3.3.5
|
|
get: function(key) {
|
|
if (!this._loader.modules[key])
|
|
return;
|
|
doEnsureEvaluated(this._loader.modules[key], [], this);
|
|
return this._loader.modules[key].module;
|
|
},
|
|
// 26.3.3.7
|
|
has: function(name) {
|
|
return !!this._loader.modules[name];
|
|
},
|
|
// 26.3.3.8
|
|
'import': function(name, parentName, parentAddress) {
|
|
if (typeof parentName == 'object')
|
|
parentName = parentName.name;
|
|
|
|
// run normalize first
|
|
var loaderObj = this;
|
|
|
|
// added, see https://bugs.ecmascript.org/show_bug.cgi?id=2659
|
|
return Promise.resolve(loaderObj.normalize(name, parentName))
|
|
.then(function(name) {
|
|
var loader = loaderObj._loader;
|
|
|
|
if (loader.modules[name]) {
|
|
doEnsureEvaluated(loader.modules[name], [], loader._loader);
|
|
return loader.modules[name].module;
|
|
}
|
|
|
|
return loader.importPromises[name] || createImportPromise(loaderObj, name,
|
|
loadModule(loader, name, {})
|
|
.then(function(load) {
|
|
delete loader.importPromises[name];
|
|
return evaluateLoadedModule(loader, load);
|
|
}));
|
|
});
|
|
},
|
|
// 26.3.3.9 keys not implemented
|
|
// 26.3.3.10
|
|
load: function(name, options) {
|
|
if (this._loader.modules[name]) {
|
|
doEnsureEvaluated(this._loader.modules[name], [], this._loader);
|
|
return Promise.resolve(this._loader.modules[name].module);
|
|
}
|
|
return this._loader.importPromises[name] || createImportPromise(this, name, loadModule(this._loader, name, {}));
|
|
},
|
|
// 26.3.3.11
|
|
module: function(source, options) {
|
|
var load = createLoad();
|
|
load.address = options && options.address;
|
|
var linkSet = createLinkSet(this._loader, load);
|
|
var sourcePromise = Promise.resolve(source);
|
|
var loader = this._loader;
|
|
var p = linkSet.done.then(function() {
|
|
return evaluateLoadedModule(loader, load);
|
|
});
|
|
proceedToTranslate(loader, load, sourcePromise);
|
|
return p;
|
|
},
|
|
// 26.3.3.12
|
|
newModule: function (obj) {
|
|
if (typeof obj != 'object')
|
|
throw new TypeError('Expected object');
|
|
|
|
// we do this to be able to tell if a module is a module privately in ES5
|
|
// by doing m instanceof Module
|
|
var m = new Module();
|
|
|
|
var pNames;
|
|
if (Object.getOwnPropertyNames && obj != null) {
|
|
pNames = Object.getOwnPropertyNames(obj);
|
|
}
|
|
else {
|
|
pNames = [];
|
|
for (var key in obj)
|
|
pNames.push(key);
|
|
}
|
|
|
|
for (var i = 0; i < pNames.length; i++) (function(key) {
|
|
defineProperty(m, key, {
|
|
configurable: false,
|
|
enumerable: true,
|
|
get: function () {
|
|
return obj[key];
|
|
}
|
|
});
|
|
})(pNames[i]);
|
|
|
|
if (Object.preventExtensions)
|
|
Object.preventExtensions(m);
|
|
|
|
return m;
|
|
},
|
|
// 26.3.3.14
|
|
set: function(name, module) {
|
|
if (!(module instanceof Module))
|
|
throw new TypeError('Loader.set(' + name + ', module) must be a module');
|
|
this._loader.modules[name] = {
|
|
module: module
|
|
};
|
|
},
|
|
// 26.3.3.15 values not implemented
|
|
// 26.3.3.16 @@iterator not implemented
|
|
// 26.3.3.17 @@toStringTag not implemented
|
|
|
|
// 26.3.3.18.1
|
|
normalize: function(name, referrerName, referrerAddress) {
|
|
return name;
|
|
},
|
|
// 26.3.3.18.2
|
|
locate: function(load) {
|
|
return load.name;
|
|
},
|
|
// 26.3.3.18.3
|
|
fetch: function(load) {
|
|
},
|
|
// 26.3.3.18.4
|
|
translate: function(load) {
|
|
return load.source;
|
|
},
|
|
// 26.3.3.18.5
|
|
instantiate: function(load) {
|
|
}
|
|
};
|
|
|
|
var _newModule = Loader.prototype.newModule;
|
|
/*
|
|
* ES6 Module Declarative Linking Code - Dev Build Only
|
|
*/
|
|
function link(linkSet, linkError) {
|
|
|
|
var loader = linkSet.loader;
|
|
|
|
if (!linkSet.loads.length)
|
|
return;
|
|
|
|
var loads = linkSet.loads.concat([]);
|
|
|
|
for (var i = 0; i < loads.length; i++) {
|
|
var load = loads[i];
|
|
|
|
var module = doDynamicExecute(linkSet, load, linkError);
|
|
if (!module)
|
|
return;
|
|
load.module = {
|
|
name: load.name,
|
|
module: module
|
|
};
|
|
load.status = 'linked';
|
|
|
|
finishLoad(loader, load);
|
|
}
|
|
}
|
|
|
|
function evaluateLoadedModule(loader, load) {
|
|
console.assert(load.status == 'linked', 'is linked ' + load.name);
|
|
return load.module.module;
|
|
}
|
|
|
|
function doEnsureEvaluated() {}
|
|
|
|
function transpile() {
|
|
throw new TypeError('ES6 transpilation is only provided in the dev module loader build.');
|
|
}
|
|
})();/*
|
|
*********************************************************************************************
|
|
|
|
System Loader Implementation
|
|
|
|
- Implemented to https://github.com/jorendorff/js-loaders/blob/master/browser-loader.js
|
|
|
|
- <script type="module"> supported
|
|
|
|
*********************************************************************************************
|
|
*/
|
|
|
|
var System;
|
|
|
|
function SystemLoader() {
|
|
Loader.call(this);
|
|
this.paths = {};
|
|
}
|
|
|
|
// NB no specification provided for System.paths, used ideas discussed in https://github.com/jorendorff/js-loaders/issues/25
|
|
function applyPaths(paths, name) {
|
|
// most specific (most number of slashes in path) match wins
|
|
var pathMatch = '', wildcard, maxSlashCount = 0;
|
|
|
|
// check to see if we have a paths entry
|
|
for (var p in paths) {
|
|
var pathParts = p.split('*');
|
|
if (pathParts.length > 2)
|
|
throw new TypeError('Only one wildcard in a path is permitted');
|
|
|
|
// exact path match
|
|
if (pathParts.length == 1) {
|
|
if (name == p) {
|
|
pathMatch = p;
|
|
break;
|
|
}
|
|
}
|
|
// wildcard path match
|
|
else {
|
|
var slashCount = p.split('/').length;
|
|
if (slashCount >= maxSlashCount &&
|
|
name.substr(0, pathParts[0].length) == pathParts[0] &&
|
|
name.substr(name.length - pathParts[1].length) == pathParts[1]) {
|
|
maxSlashCount = slashCount;
|
|
pathMatch = p;
|
|
wildcard = name.substr(pathParts[0].length, name.length - pathParts[1].length - pathParts[0].length);
|
|
}
|
|
}
|
|
}
|
|
|
|
var outPath = paths[pathMatch] || name;
|
|
if (wildcard)
|
|
outPath = outPath.replace('*', wildcard);
|
|
|
|
return outPath;
|
|
}
|
|
|
|
// inline Object.create-style class extension
|
|
function LoaderProto() {}
|
|
LoaderProto.prototype = Loader.prototype;
|
|
SystemLoader.prototype = new LoaderProto();
|
|
var absURLRegEx = /^([^\/]+:\/\/|\/)/;
|
|
|
|
// Normalization with module names as absolute URLs
|
|
SystemLoader.prototype.normalize = function(name, parentName, parentAddress) {
|
|
// NB does `import 'file.js'` import relative to the parent name or baseURL?
|
|
// have assumed that it is baseURL-relative here, but spec may well align with URLs to be the latter
|
|
// safe option for users is to always use "./file.js" for relative
|
|
|
|
// not absolute or relative -> apply paths (what will be sites)
|
|
if (!name.match(absURLRegEx) && name[0] != '.')
|
|
name = new URL(applyPaths(this.paths, name), baseURI).href;
|
|
// apply parent-relative normalization, parentAddress is already normalized
|
|
else
|
|
name = new URL(name, parentName || baseURI).href;
|
|
|
|
return name;
|
|
};
|
|
|
|
SystemLoader.prototype.locate = function(load) {
|
|
return load.name;
|
|
};
|
|
|
|
|
|
// ensure the transpiler is loaded correctly
|
|
SystemLoader.prototype.instantiate = function(load) {
|
|
var self = this;
|
|
return Promise.resolve(self.normalize(self.transpiler))
|
|
.then(function(transpilerNormalized) {
|
|
// load transpiler as a global (avoiding System clobbering)
|
|
if (load.address === transpilerNormalized) {
|
|
return {
|
|
deps: [],
|
|
execute: function() {
|
|
var curSystem = __global.System;
|
|
var curLoader = __global.Reflect.Loader;
|
|
// ensure not detected as CommonJS
|
|
__eval('(function(require,exports,module){' + load.source + '})();', load.address, __global);
|
|
__global.System = curSystem;
|
|
__global.Reflect.Loader = curLoader;
|
|
return self.newModule({ 'default': __global[self.transpiler], __useDefault: true });
|
|
}
|
|
};
|
|
}
|
|
});
|
|
};// SystemJS Loader Class and Extension helpers
|
|
|
|
function SystemJSLoader() {
|
|
SystemLoader.call(this);
|
|
|
|
systemJSConstructor.call(this);
|
|
}
|
|
|
|
// inline Object.create-style class extension
|
|
function SystemProto() {};
|
|
SystemProto.prototype = SystemLoader.prototype;
|
|
SystemJSLoader.prototype = new SystemProto();
|
|
|
|
var systemJSConstructor;
|
|
|
|
function hook(name, hook) {
|
|
SystemJSLoader.prototype[name] = hook(SystemJSLoader.prototype[name]);
|
|
}
|
|
function hookConstructor(hook) {
|
|
systemJSConstructor = hook(systemJSConstructor || function() {});
|
|
}
|
|
|
|
function dedupe(deps) {
|
|
var newDeps = [];
|
|
for (var i = 0, l = deps.length; i < l; i++)
|
|
if (indexOf.call(newDeps, deps[i]) == -1)
|
|
newDeps.push(deps[i])
|
|
return newDeps;
|
|
}
|
|
|
|
function extend(a, b, underwrite) {
|
|
for (var p in b) {
|
|
if (!underwrite || !(p in a))
|
|
a[p] = b[p];
|
|
}
|
|
}/*
|
|
* Script tag fetch
|
|
*
|
|
* When load.metadata.scriptLoad is true, we load via script tag injection.
|
|
*/
|
|
(function() {
|
|
|
|
if (typeof document != 'undefined')
|
|
var head = document.getElementsByTagName('head')[0];
|
|
|
|
// call this functione everytime a wrapper executes
|
|
var curSystem;
|
|
// System clobbering protection for Traceur
|
|
SystemJSLoader.prototype.onScriptLoad = function() {
|
|
__global.System = curSystem;
|
|
};
|
|
|
|
function webWorkerImport(loader, load) {
|
|
return new Promise(function(resolve, reject) {
|
|
try {
|
|
importScripts(load.address);
|
|
}
|
|
catch(e) {
|
|
reject(e);
|
|
}
|
|
|
|
loader.onScriptLoad(load);
|
|
// if nothing registered, then something went wrong
|
|
if (!load.metadata.registered)
|
|
reject(load.address + ' did not call System.register or AMD define');
|
|
|
|
resolve('');
|
|
});
|
|
}
|
|
|
|
// override fetch to use script injection
|
|
hook('fetch', function(fetch) {
|
|
return function(load) {
|
|
var loader = this;
|
|
|
|
if (!load.metadata.scriptLoad || (!isBrowser && !isWorker))
|
|
return fetch.call(this, load);
|
|
|
|
if (isWorker)
|
|
return webWorkerImport(loader, load);
|
|
|
|
return new Promise(function(resolve, reject) {
|
|
var s = document.createElement('script');
|
|
s.async = true;
|
|
|
|
function complete(evt) {
|
|
if (s.readyState && s.readyState != 'loaded' && s.readyState != 'complete')
|
|
return;
|
|
cleanup();
|
|
|
|
// this runs synchronously after execution
|
|
// we now need to tell the wrapper handlers that
|
|
// this load record has just executed
|
|
loader.onScriptLoad(load);
|
|
|
|
// if nothing registered, then something went wrong
|
|
if (!load.metadata.registered)
|
|
reject(load.address + ' did not call System.register or AMD define');
|
|
|
|
resolve('');
|
|
}
|
|
|
|
function error(evt) {
|
|
cleanup();
|
|
reject(new Error('Unable to load script ' + load.address));
|
|
}
|
|
|
|
if (s.attachEvent) {
|
|
s.attachEvent('onreadystatechange', complete);
|
|
}
|
|
else {
|
|
s.addEventListener('load', complete, false);
|
|
s.addEventListener('error', error, false);
|
|
}
|
|
|
|
curSystem = __global.System;
|
|
__global.System = loader;
|
|
s.src = load.address;
|
|
head.appendChild(s);
|
|
|
|
function cleanup() {
|
|
if (s.detachEvent)
|
|
s.detachEvent('onreadystatechange', complete);
|
|
else {
|
|
s.removeEventListener('load', complete, false);
|
|
s.removeEventListener('error', error, false);
|
|
}
|
|
head.removeChild(s);
|
|
}
|
|
});
|
|
};
|
|
});
|
|
})();
|
|
/*
|
|
* Script-only addition used for production loader
|
|
*
|
|
*/
|
|
|
|
hook('fetch', function(fetch) {
|
|
return function(load) {
|
|
load.metadata.scriptLoad = true;
|
|
// prepare amd define
|
|
this.get('@@amd-helpers').createDefine(this);
|
|
return fetch.call(this, load);
|
|
};
|
|
});
|
|
|
|
// AMD support
|
|
// script injection mode calls this function synchronously on load
|
|
hook('onScriptLoad', function(onScriptLoad) {
|
|
return function(load) {
|
|
onScriptLoad.call(this, load);
|
|
|
|
var lastModule = this.get('@@amd-helpers').lastModule;
|
|
if (lastModule.anonDefine || lastModule.isBundle) {
|
|
load.metadata.format = 'defined';
|
|
load.metadata.registered = true;
|
|
lastModule.isBundle = false;
|
|
}
|
|
|
|
if (lastModule.anonDefine) {
|
|
load.metadata.deps = load.metadata.deps ? load.metadata.deps.concat(lastModule.anonDefine.deps) : lastModule.anonDefine.deps;
|
|
load.metadata.execute = lastModule.anonDefine.execute;
|
|
lastModule.anonDefine = null;
|
|
}
|
|
};
|
|
});/*
|
|
* Instantiate registry extension
|
|
*
|
|
* Supports Traceur System.register 'instantiate' output for loading ES6 as ES5.
|
|
*
|
|
* - Creates the loader.register function
|
|
* - Also supports metadata.format = 'register' in instantiate for anonymous register modules
|
|
* - Also supports metadata.deps, metadata.execute and metadata.executingRequire
|
|
* for handling dynamic modules alongside register-transformed ES6 modules
|
|
*
|
|
*
|
|
* The code here replicates the ES6 linking groups algorithm to ensure that
|
|
* circular ES6 compiled into System.register can work alongside circular AMD
|
|
* and CommonJS, identically to the actual ES6 loader.
|
|
*
|
|
*/
|
|
(function() {
|
|
|
|
/*
|
|
* There are two variations of System.register:
|
|
* 1. System.register for ES6 conversion (2-3 params) - System.register([name, ]deps, declare)
|
|
* see https://github.com/ModuleLoader/es6-module-loader/wiki/System.register-Explained
|
|
*
|
|
* 2. System.registerDynamic for dynamic modules (3-4 params) - System.registerDynamic([name, ]deps, executingRequire, execute)
|
|
* the true or false statement
|
|
*
|
|
* this extension implements the linking algorithm for the two variations identical to the spec
|
|
* allowing compiled ES6 circular references to work alongside AMD and CJS circular references.
|
|
*
|
|
*/
|
|
var anonRegister;
|
|
var calledRegister;
|
|
function doRegister(loader, name, register) {
|
|
calledRegister = true;
|
|
|
|
// named register
|
|
if (name) {
|
|
name = loader.normalizeSync(name);
|
|
register.name = name;
|
|
if (!(name in loader.defined))
|
|
loader.defined[name] = register;
|
|
}
|
|
// anonymous register
|
|
else if (register.declarative) {
|
|
if (anonRegister)
|
|
throw new TypeError('Multiple anonymous System.register calls in the same module file.');
|
|
anonRegister = register;
|
|
}
|
|
}
|
|
SystemJSLoader.prototype.register = function(name, deps, declare) {
|
|
if (typeof name != 'string') {
|
|
declare = deps;
|
|
deps = name;
|
|
name = null;
|
|
}
|
|
|
|
// dynamic backwards-compatibility
|
|
// can be deprecated eventually
|
|
if (typeof declare == 'boolean')
|
|
return this.registerDynamic.apply(this, arguments);
|
|
|
|
doRegister(this, name, {
|
|
declarative: true,
|
|
deps: deps,
|
|
declare: declare
|
|
});
|
|
};
|
|
SystemJSLoader.prototype.registerDynamic = function(name, deps, declare, execute) {
|
|
if (typeof name != 'string') {
|
|
execute = declare;
|
|
declare = deps;
|
|
deps = name;
|
|
name = null;
|
|
}
|
|
|
|
// dynamic
|
|
doRegister(this, name, {
|
|
declarative: false,
|
|
deps: deps,
|
|
execute: execute,
|
|
executingRequire: declare
|
|
});
|
|
};
|
|
/*
|
|
* Registry side table - loader.defined
|
|
* Registry Entry Contains:
|
|
* - name
|
|
* - deps
|
|
* - declare for declarative modules
|
|
* - execute for dynamic modules, different to declarative execute on module
|
|
* - executingRequire indicates require drives execution for circularity of dynamic modules
|
|
* - declarative optional boolean indicating which of the above
|
|
*
|
|
* Can preload modules directly on System.defined['my/module'] = { deps, execute, executingRequire }
|
|
*
|
|
* Then the entry gets populated with derived information during processing:
|
|
* - normalizedDeps derived from deps, created in instantiate
|
|
* - groupIndex used by group linking algorithm
|
|
* - evaluated indicating whether evaluation has happend
|
|
* - module the module record object, containing:
|
|
* - exports actual module exports
|
|
*
|
|
* For dynamic we track the es module with:
|
|
* - esModule actual es module value
|
|
*
|
|
* Then for declarative only we track dynamic bindings with the 'module' records:
|
|
* - name
|
|
* - exports
|
|
* - setters declarative setter functions
|
|
* - dependencies, module records of dependencies
|
|
* - importers, module records of dependents
|
|
*
|
|
* After linked and evaluated, entries are removed, declarative module records remain in separate
|
|
* module binding table
|
|
*
|
|
*/
|
|
hookConstructor(function(constructor) {
|
|
return function() {
|
|
constructor.call(this);
|
|
|
|
this.defined = {};
|
|
this._loader.moduleRecords = {};
|
|
};
|
|
});
|
|
|
|
// script injection mode calls this function synchronously on load
|
|
hook('onScriptLoad', function(onScriptLoad) {
|
|
return function(load) {
|
|
onScriptLoad.call(this, load);
|
|
|
|
// anonymous define
|
|
if (anonRegister)
|
|
load.metadata.entry = anonRegister;
|
|
|
|
if (calledRegister) {
|
|
load.metadata.format = load.metadata.format || 'defined';
|
|
load.metadata.registered = true;
|
|
calledRegister = false;
|
|
anonRegister = null;
|
|
}
|
|
};
|
|
});
|
|
|
|
function buildGroups(entry, loader, groups) {
|
|
groups[entry.groupIndex] = groups[entry.groupIndex] || [];
|
|
|
|
if (indexOf.call(groups[entry.groupIndex], entry) != -1)
|
|
return;
|
|
|
|
groups[entry.groupIndex].push(entry);
|
|
|
|
for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
|
|
var depName = entry.normalizedDeps[i];
|
|
var depEntry = loader.defined[depName];
|
|
|
|
// not in the registry means already linked / ES6
|
|
if (!depEntry || depEntry.evaluated)
|
|
continue;
|
|
|
|
// now we know the entry is in our unlinked linkage group
|
|
var depGroupIndex = entry.groupIndex + (depEntry.declarative != entry.declarative);
|
|
|
|
// the group index of an entry is always the maximum
|
|
if (depEntry.groupIndex === undefined || depEntry.groupIndex < depGroupIndex) {
|
|
|
|
// if already in a group, remove from the old group
|
|
if (depEntry.groupIndex !== undefined) {
|
|
groups[depEntry.groupIndex].splice(indexOf.call(groups[depEntry.groupIndex], depEntry), 1);
|
|
|
|
// if the old group is empty, then we have a mixed depndency cycle
|
|
if (groups[depEntry.groupIndex].length == 0)
|
|
throw new TypeError("Mixed dependency cycle detected");
|
|
}
|
|
|
|
depEntry.groupIndex = depGroupIndex;
|
|
}
|
|
|
|
buildGroups(depEntry, loader, groups);
|
|
}
|
|
}
|
|
|
|
function link(name, loader) {
|
|
var startEntry = loader.defined[name];
|
|
|
|
// skip if already linked
|
|
if (startEntry.module)
|
|
return;
|
|
|
|
startEntry.groupIndex = 0;
|
|
|
|
var groups = [];
|
|
|
|
buildGroups(startEntry, loader, groups);
|
|
|
|
var curGroupDeclarative = !!startEntry.declarative == groups.length % 2;
|
|
for (var i = groups.length - 1; i >= 0; i--) {
|
|
var group = groups[i];
|
|
for (var j = 0; j < group.length; j++) {
|
|
var entry = group[j];
|
|
|
|
// link each group
|
|
if (curGroupDeclarative)
|
|
linkDeclarativeModule(entry, loader);
|
|
else
|
|
linkDynamicModule(entry, loader);
|
|
}
|
|
curGroupDeclarative = !curGroupDeclarative;
|
|
}
|
|
}
|
|
|
|
// module binding records
|
|
function getOrCreateModuleRecord(name, moduleRecords) {
|
|
return moduleRecords[name] || (moduleRecords[name] = {
|
|
name: name,
|
|
dependencies: [],
|
|
exports: {}, // start from an empty module and extend
|
|
importers: []
|
|
});
|
|
}
|
|
|
|
function linkDeclarativeModule(entry, loader) {
|
|
// only link if already not already started linking (stops at circular)
|
|
if (entry.module)
|
|
return;
|
|
|
|
var moduleRecords = loader._loader.moduleRecords;
|
|
var module = entry.module = getOrCreateModuleRecord(entry.name, moduleRecords);
|
|
var exports = entry.module.exports;
|
|
|
|
var declaration = entry.declare.call(__global, function(name, value) {
|
|
module.locked = true;
|
|
|
|
if (typeof name == 'object') {
|
|
for (var p in name)
|
|
exports[p] = name[p];
|
|
}
|
|
else {
|
|
exports[name] = value;
|
|
}
|
|
|
|
for (var i = 0, l = module.importers.length; i < l; i++) {
|
|
var importerModule = module.importers[i];
|
|
if (!importerModule.locked) {
|
|
var importerIndex = indexOf.call(importerModule.dependencies, module);
|
|
importerModule.setters[importerIndex](exports);
|
|
}
|
|
}
|
|
|
|
module.locked = false;
|
|
return value;
|
|
});
|
|
|
|
module.setters = declaration.setters;
|
|
module.execute = declaration.execute;
|
|
|
|
if (!module.setters || !module.execute) {
|
|
throw new TypeError('Invalid System.register form for ' + entry.name);
|
|
}
|
|
|
|
// now link all the module dependencies
|
|
for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
|
|
var depName = entry.normalizedDeps[i];
|
|
var depEntry = loader.defined[depName];
|
|
var depModule = moduleRecords[depName];
|
|
|
|
// work out how to set depExports based on scenarios...
|
|
var depExports;
|
|
|
|
if (depModule) {
|
|
depExports = depModule.exports;
|
|
}
|
|
// dynamic, already linked in our registry
|
|
else if (depEntry && !depEntry.declarative) {
|
|
depExports = depEntry.esModule;
|
|
}
|
|
// in the loader registry
|
|
else if (!depEntry) {
|
|
depExports = loader.get(depName);
|
|
}
|
|
// we have an entry -> link
|
|
else {
|
|
linkDeclarativeModule(depEntry, loader);
|
|
depModule = depEntry.module;
|
|
depExports = depModule.exports;
|
|
}
|
|
|
|
// only declarative modules have dynamic bindings
|
|
if (depModule && depModule.importers) {
|
|
depModule.importers.push(module);
|
|
module.dependencies.push(depModule);
|
|
}
|
|
else {
|
|
module.dependencies.push(null);
|
|
}
|
|
|
|
// run the setter for this dependency
|
|
if (module.setters[i])
|
|
module.setters[i](depExports);
|
|
}
|
|
}
|
|
|
|
// An analog to loader.get covering execution of all three layers (real declarative, simulated declarative, simulated dynamic)
|
|
function getModule(name, loader) {
|
|
var exports;
|
|
var entry = loader.defined[name];
|
|
|
|
if (!entry) {
|
|
exports = loader.get(name);
|
|
if (!exports)
|
|
throw new Error('Unable to load dependency ' + name + '.');
|
|
}
|
|
|
|
else {
|
|
if (entry.declarative)
|
|
ensureEvaluated(name, [], loader);
|
|
|
|
else if (!entry.evaluated)
|
|
linkDynamicModule(entry, loader);
|
|
|
|
exports = entry.module.exports;
|
|
}
|
|
|
|
if ((!entry || entry.declarative) && exports && exports.__useDefault)
|
|
return exports['default'];
|
|
|
|
return exports;
|
|
}
|
|
|
|
function linkDynamicModule(entry, loader) {
|
|
if (entry.module)
|
|
return;
|
|
|
|
var exports = {};
|
|
|
|
var module = entry.module = { exports: exports, id: entry.name };
|
|
|
|
// AMD requires execute the tree first
|
|
if (!entry.executingRequire) {
|
|
for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
|
|
var depName = entry.normalizedDeps[i];
|
|
// we know we only need to link dynamic due to linking algorithm
|
|
var depEntry = loader.defined[depName];
|
|
if (depEntry)
|
|
linkDynamicModule(depEntry, loader);
|
|
}
|
|
}
|
|
|
|
// now execute
|
|
entry.evaluated = true;
|
|
var output = entry.execute.call(__global, function(name) {
|
|
for (var i = 0, l = entry.deps.length; i < l; i++) {
|
|
if (entry.deps[i] != name)
|
|
continue;
|
|
return getModule(entry.normalizedDeps[i], loader);
|
|
}
|
|
throw new TypeError('Module ' + name + ' not declared as a dependency.');
|
|
}, exports, module);
|
|
|
|
if (output)
|
|
module.exports = output;
|
|
|
|
// create the esModule object, which allows ES6 named imports of dynamics
|
|
exports = module.exports;
|
|
|
|
if (exports && exports.__esModule) {
|
|
entry.esModule = exports;
|
|
}
|
|
else {
|
|
var hasOwnProperty = exports && exports.hasOwnProperty;
|
|
entry.esModule = {};
|
|
for (var p in exports) {
|
|
if (!hasOwnProperty || exports.hasOwnProperty(p))
|
|
entry.esModule[p] = exports[p];
|
|
}
|
|
entry.esModule['default'] = exports;
|
|
defineProperty(entry.esModule, '__useDefault', {
|
|
value: true
|
|
});
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Given a module, and the list of modules for this current branch,
|
|
* ensure that each of the dependencies of this module is evaluated
|
|
* (unless one is a circular dependency already in the list of seen
|
|
* modules, in which case we execute it)
|
|
*
|
|
* Then we evaluate the module itself depth-first left to right
|
|
* execution to match ES6 modules
|
|
*/
|
|
function ensureEvaluated(moduleName, seen, loader) {
|
|
var entry = loader.defined[moduleName];
|
|
|
|
// if already seen, that means it's an already-evaluated non circular dependency
|
|
if (!entry || entry.evaluated || !entry.declarative)
|
|
return;
|
|
|
|
// this only applies to declarative modules which late-execute
|
|
|
|
seen.push(moduleName);
|
|
|
|
for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
|
|
var depName = entry.normalizedDeps[i];
|
|
if (indexOf.call(seen, depName) == -1) {
|
|
if (!loader.defined[depName])
|
|
loader.get(depName);
|
|
else
|
|
ensureEvaluated(depName, seen, loader);
|
|
}
|
|
}
|
|
|
|
if (entry.evaluated)
|
|
return;
|
|
|
|
entry.evaluated = true;
|
|
entry.module.execute.call(__global);
|
|
}
|
|
|
|
// override the delete method to also clear the register caches
|
|
hook('delete', function(del) {
|
|
return function(name) {
|
|
delete this._loader.moduleRecords[name];
|
|
delete this.defined[name];
|
|
return del.call(this, name);
|
|
};
|
|
});
|
|
|
|
var registerRegEx = /^\s*(\/\*.*\*\/\s*|\/\/[^\n]*\s*)*System\.register(Dyanmic)?\s*\(/;
|
|
|
|
hook('fetch', function(fetch) {
|
|
return function(load) {
|
|
if (this.defined[load.name]) {
|
|
load.metadata.format = 'defined';
|
|
return '';
|
|
}
|
|
|
|
// this is the synchronous chain for onScriptLoad
|
|
anonRegister = null;
|
|
calledRegister = false;
|
|
|
|
if (load.metadata.format == 'register')
|
|
load.metadata.scriptLoad = true;
|
|
|
|
// NB remove when "deps " is deprecated
|
|
load.metadata.deps = load.metadata.deps || [];
|
|
|
|
return fetch.call(this, load);
|
|
};
|
|
});
|
|
|
|
hook('translate', function(translate) {
|
|
// we run the meta detection here (register is after meta)
|
|
return function(load) {
|
|
return Promise.resolve(translate.call(this, load)).then(function(source) {
|
|
|
|
if (typeof load.metadata.deps === 'string')
|
|
load.metadata.deps = load.metadata.deps.split(',');
|
|
load.metadata.deps = load.metadata.deps || [];
|
|
|
|
// run detection for register format
|
|
if (load.metadata.format == 'register' || !load.metadata.format && load.source.match(registerRegEx))
|
|
load.metadata.format = 'register';
|
|
return source;
|
|
});
|
|
};
|
|
});
|
|
|
|
hook('instantiate', function(instantiate) {
|
|
return function(load) {
|
|
var loader = this;
|
|
|
|
var entry;
|
|
|
|
// first we check if this module has already been defined in the registry
|
|
if (loader.defined[load.name]) {
|
|
entry = loader.defined[load.name];
|
|
entry.deps = entry.deps.concat(load.metadata.deps);
|
|
}
|
|
|
|
// picked up already by a script injection
|
|
else if (load.metadata.entry)
|
|
entry = load.metadata.entry;
|
|
|
|
// otherwise check if it is dynamic
|
|
else if (load.metadata.execute) {
|
|
entry = {
|
|
declarative: false,
|
|
deps: load.metadata.deps || [],
|
|
execute: load.metadata.execute,
|
|
executingRequire: load.metadata.executingRequire // NodeJS-style requires or not
|
|
};
|
|
}
|
|
|
|
// Contains System.register calls
|
|
else if (load.metadata.format == 'register' || load.metadata.format == 'esm' || load.metadata.format == 'es6') {
|
|
anonRegister = null;
|
|
calledRegister = false;
|
|
|
|
__exec.call(loader, load);
|
|
|
|
if (anonRegister)
|
|
entry = anonRegister;
|
|
else
|
|
load.metadata.bundle = true;
|
|
|
|
if (!entry && loader.defined[load.name])
|
|
entry = loader.defined[load.name];
|
|
|
|
if (!calledRegister && !load.metadata.registered)
|
|
throw new TypeError(load.name + ' detected as System.register but didn\'t execute.');
|
|
}
|
|
|
|
// named bundles are just an empty module
|
|
if (!entry)
|
|
entry = {
|
|
declarative: false,
|
|
deps: load.metadata.deps,
|
|
execute: function() {
|
|
return loader.newModule({});
|
|
}
|
|
};
|
|
|
|
// place this module onto defined for circular references
|
|
loader.defined[load.name] = entry;
|
|
|
|
entry.deps = dedupe(entry.deps);
|
|
entry.name = load.name;
|
|
|
|
// first, normalize all dependencies
|
|
var normalizePromises = [];
|
|
for (var i = 0, l = entry.deps.length; i < l; i++)
|
|
normalizePromises.push(Promise.resolve(loader.normalize(entry.deps[i], load.name)));
|
|
|
|
return Promise.all(normalizePromises).then(function(normalizedDeps) {
|
|
|
|
entry.normalizedDeps = normalizedDeps;
|
|
|
|
return {
|
|
deps: entry.deps,
|
|
execute: function() {
|
|
// recursively ensure that the module and all its
|
|
// dependencies are linked (with dependency group handling)
|
|
link(load.name, loader);
|
|
|
|
// now handle dependency execution in correct order
|
|
ensureEvaluated(load.name, [], loader);
|
|
|
|
// remove from the registry
|
|
loader.defined[load.name] = undefined;
|
|
|
|
// return the defined module object
|
|
return loader.newModule(entry.declarative ? entry.module.exports : entry.esModule);
|
|
}
|
|
};
|
|
});
|
|
};
|
|
});
|
|
})();
|
|
System = new SystemJSLoader();
|
|
System.constructor = SystemJSLoader; // -- exporting --
|
|
|
|
if (typeof exports === 'object')
|
|
module.exports = Loader;
|
|
|
|
__global.Reflect = __global.Reflect || {};
|
|
__global.Reflect.Loader = __global.Reflect.Loader || Loader;
|
|
__global.Reflect.global = __global.Reflect.global || __global;
|
|
__global.LoaderPolyfill = Loader;
|
|
|
|
if (!System) {
|
|
System = new SystemLoader();
|
|
System.constructor = SystemLoader;
|
|
}
|
|
|
|
if (typeof exports === 'object')
|
|
module.exports = System;
|
|
|
|
__global.System = System;
|
|
|
|
})(typeof self != 'undefined' ? self : global); |