funcunit
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JavaScript
/*
*********************************************************************************************
System Loader Implementation
- Implemented to https://github.com/jorendorff/js-loaders/blob/master/browser-loader.js
- <script type="module"> supported
*********************************************************************************************
*/
(function() {
var isWorker = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope;
var isBrowser = typeof window != 'undefined' && !isWorker;
var isWindows = typeof process != 'undefined' && !!process.platform.match(/^win/);
var Promise = __global.Promise || require('when/es6-shim/Promise');
// Helpers
// Absolute URL parsing, from https://gist.github.com/Yaffle/1088850
function parseURI(url) {
var m = String(url).replace(/^\s+|\s+$/g, '').match(/^([^:\/?#]+:)?(\/\/(?:[^:@\/?#]*(?::[^:@\/?#]*)?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);
// authority = '//' + user + ':' + pass '@' + hostname + ':' port
return (m ? {
href : m[0] || '',
protocol : m[1] || '',
authority: m[2] || '',
host : m[3] || '',
hostname : m[4] || '',
port : m[5] || '',
pathname : m[6] || '',
search : m[7] || '',
hash : m[8] || ''
} : null);
}
function removeDotSegments(input) {
var output = [];
input.replace(/^(\.\.?(\/|$))+/, '')
.replace(/\/(\.(\/|$))+/g, '/')
.replace(/\/\.\.$/, '/../')
.replace(/\/?[^\/]*/g, function (p) {
if (p === '/..')
output.pop();
else
output.push(p);
});
return output.join('').replace(/^\//, input.charAt(0) === '/' ? '/' : '');
}
function toAbsoluteURL(base, href) {
if (isWindows)
href = href.replace(/\\/g, '/');
href = parseURI(href || '');
base = parseURI(base || '');
return !href || !base ? null : (href.protocol || base.protocol) +
(href.protocol || href.authority ? href.authority : base.authority) +
removeDotSegments(href.protocol || href.authority || href.pathname.charAt(0) === '/' ? href.pathname : (href.pathname ? ((base.authority && !base.pathname ? '/' : '') + base.pathname.slice(0, base.pathname.lastIndexOf('/') + 1) + href.pathname) : base.pathname)) +
(href.protocol || href.authority || href.pathname ? href.search : (href.search || base.search)) +
href.hash;
}
var fetchTextFromURL;
if (typeof XMLHttpRequest != 'undefined') {
fetchTextFromURL = function(url, fulfill, reject) {
var xhr = new XMLHttpRequest();
var sameDomain = true;
var doTimeout = false;
if (!('withCredentials' in xhr)) {
// check if same domain
var domainCheck = /^(\w+:)?\/\/([^\/]+)/.exec(url);
if (domainCheck) {
sameDomain = domainCheck[2] === window.location.host;
if (domainCheck[1])
sameDomain &= domainCheck[1] === window.location.protocol;
}
}
if (!sameDomain && typeof XDomainRequest != 'undefined') {
xhr = new XDomainRequest();
xhr.onload = load;
xhr.onerror = error;
xhr.ontimeout = error;
xhr.onprogress = function() {};
xhr.timeout = 0;
doTimeout = true;
}
function load() {
fulfill(xhr.responseText);
}
function error() {
reject(xhr.statusText + ': ' + url || 'XHR error');
}
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
if (xhr.status === 200 || (xhr.status == 0 && xhr.responseText)) {
load();
} else {
error();
}
}
};
xhr.open("GET", url, true);
if (doTimeout)
setTimeout(function() {
xhr.send();
}, 0);
xhr.send(null);
}
}
else if (typeof require != 'undefined') {
var fs;
fetchTextFromURL = function(url, fulfill, reject) {
if (url.substr(0, 5) != 'file:')
throw 'Only file URLs of the form file: allowed running in Node.';
fs = fs || require('fs');
url = url.substr(5);
if (isWindows)
url = url.replace(/\//g, '\\');
return fs.readFile(url, function(err, data) {
if (err)
return reject(err);
else
fulfill(data + '');
});
}
}
else {
throw new TypeError('No environment fetch API available.');
}
class SystemLoader extends __global.LoaderPolyfill {
constructor(options) {
super(options || {});
// Set default baseURL and paths
if (typeof location != 'undefined' && location.href) {
var href = __global.location.href.split('#')[0].split('?')[0];
this.baseURL = href.substring(0, href.lastIndexOf('/') + 1);
}
else if (typeof process != 'undefined' && process.cwd) {
this.baseURL = 'file:' + process.cwd() + '/';
if (isWindows)
this.baseURL = this.baseURL.replace(/\\/g, '/');
}
else {
throw new TypeError('No environment baseURL');
}
this.paths = { '*': '*.js' };
}
get global() {
return isBrowser ? window : (isWorker ? self : __global);
}
get strict() { return true; }
normalize(name, parentName, parentAddress) {
if (typeof name != 'string')
throw new TypeError('Module name must be a string');
var segments = name.split('/');
if (segments.length == 0)
throw new TypeError('No module name provided');
// current segment
var i = 0;
// is the module name relative
var rel = false;
// number of backtracking segments
var dotdots = 0;
if (segments[0] == '.') {
i++;
if (i == segments.length)
throw new TypeError('Illegal module name "' + name + '"');
rel = true;
}
else {
while (segments[i] == '..') {
i++;
if (i == segments.length)
throw new TypeError('Illegal module name "' + name + '"');
}
if (i)
rel = true;
dotdots = i;
}
for (var j = i; j < segments.length; j++) {
var segment = segments[j];
if (segment == '' || segment == '.' || segment == '..')
throw new TypeError('Illegal module name "' + name + '"');
}
if (!rel)
return name;
// build the full module name
var normalizedParts = [];
var parentParts = (parentName || '').split('/');
var normalizedLen = parentParts.length - 1 - dotdots;
normalizedParts = normalizedParts.concat(parentParts.splice(0, parentParts.length - 1 - dotdots));
normalizedParts = normalizedParts.concat(segments.splice(i, segments.length - i));
return normalizedParts.join('/');
}
locate(load) {
var name = load.name;
// NB no specification provided for System.paths, used ideas discussed in https://github.com/jorendorff/js-loaders/issues/25
// most specific (longest) match wins
var pathMatch = '', wildcard;
// check to see if we have a paths entry
for (var p in this.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 && p.length > pathMatch.length) {
pathMatch = p;
break;
}
}
// wildcard path match
else {
if (name.substr(0, pathParts[0].length) == pathParts[0] && name.substr(name.length - pathParts[1].length) == pathParts[1]) {
pathMatch = p;
wildcard = name.substr(pathParts[0].length, name.length - pathParts[1].length - pathParts[0].length);
}
}
}
var outPath = this.paths[pathMatch];
if (wildcard)
outPath = outPath.replace('*', wildcard);
// percent encode just '#' in module names
// according to https://github.com/jorendorff/js-loaders/blob/master/browser-loader.js#L238
// we should encode everything, but it breaks for servers that don't expect it
// like in (https://github.com/systemjs/systemjs/issues/168)
if (isBrowser)
outPath = outPath.replace(/#/g, '%23');
return toAbsoluteURL(this.baseURL, outPath);
}
fetch(load) {
var self = this;
return new Promise(function(resolve, reject) {
fetchTextFromURL(toAbsoluteURL(self.baseURL, load.address), function(source) {
resolve(source);
}, reject);
});
}
}
var System = new SystemLoader();
// note we have to export before runing "init" below
if (typeof exports === 'object')
module.exports = System;
__global.System = System;
// <script type="module"> support
// allow a data-init function callback once loaded
if (isBrowser && typeof document.getElementsByTagName != 'undefined') {
var curScript = document.getElementsByTagName('script');
curScript = curScript[curScript.length - 1];
function completed() {
document.removeEventListener( "DOMContentLoaded", completed, false );
window.removeEventListener( "load", completed, false );
ready();
}
function ready() {
var scripts = document.getElementsByTagName('script');
for (var i = 0; i < scripts.length; i++) {
var script = scripts[i];
if (script.type == 'module') {
var source = script.innerHTML.substr(1);
// It is important to reference the global System, rather than the one
// in our closure. We want to ensure that downstream users/libraries
// can override System w/ custom behavior.
__global.System.module(source)['catch'](function(err) { setTimeout(function() { throw err; }); });
}
}
}
// DOM ready, taken from https://github.com/jquery/jquery/blob/master/src/core/ready.js#L63
if (document.readyState === 'complete') {
setTimeout(ready);
}
else if (document.addEventListener) {
document.addEventListener('DOMContentLoaded', completed, false);
window.addEventListener('load', completed, false);
}
// run the data-init function on the script tag
if (curScript.getAttribute('data-init'))
window[curScript.getAttribute('data-init')]();
}
})();