Javascript
9、common.js源码（非压缩版）、require.js源码（非压缩版） 、sea.js源码（非压缩版）、el-tag源码
本文主要是介绍9、common.js源码（非压缩版）、require.js源码（非压缩版） 、sea.js源码（非压缩版）、el-tag源码，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
一、common.js源码（非压缩版）
//
// CommonJS Client-side Implementation
//
// Author: James Brumond <james@jbrumond.me> (http://www.jbrumond.me)
// GitHub: https://www.github.com/UmbraEngineering/commonjs-preprocessor
//
(function(window) {
var head = document.getElementsByTagName('head')[0];
//
// The core module loading function
//
// @param {file} the module path to load
// @param {from} the module requesting the require
//
var require = window.require = function(file, from) {
var module = require.lookup(file, from);
if (! module) {
var msg = 'Cannot find module "' + file + '"';
if (from && from.filename) {
msg += ' in file "' + from.filename + '"';
}
throw new Error(msg);
}
if (from) {
from.children.push(module);
}
if (! module.loaded) {
if (from) {
module.parent = from;
}
module.call();
}
return module.exports;
};
//
// Looks up and returns a module
//
// @param {file} the module path to load
// @param {from} the module requesting the lookup
//
require.lookup = function(file, from) {
return require._modules[require.resolve(file, from)];
};
//
// Paths to search for non-relative modules. By default, that just
// looks them up from the root JavaScript directory. These should
// all begin with a slash "/".
//
require.paths = [ '/' ];
//
// The JavaScript source directory, used by {require.load}. If the common.js
// client is not in the root JavaScript directory, this should be overriden
// to be accurate.
//
require.dir = (function() {
var script = document.getElementsByTagName('script');
script = script[script.length - 1];
var src = script.getAttribute('src');
script = null;
src = src.split('/');
src.pop();
return src.join('/');
}());
//
// Resolves a given {file} path and {from} module to get an exact
// lookup path for the requested module
//
// @param {file} the module path to load
// @param {from} the module requesting the resolve
//
require.resolve = function(file, from) {
if (file.slice(-3) !== '.js') {
file += '.js';
}
switch (file.charAt(0)) {
// Absolute path (relative to given JavaScript root directory)
// eg. require('/module');
case '/':
return modulePath(file);
break;
// Relative path
// eg. require('./module');
case '.':
file = file.split('/');
var dir = from ? from.dirname : '';
var segments = dir.split('/');
for (var i = 0, c = file.length; i < c; i++) {
switch (file[i]) {
case '.': /* pass */ break;
case '..': segments.pop(); break;
default: segments.push(file[i]); break;
}
}
file = segments.join('/');
return modulePath(file);
break;
// Just module name
// eg. require('module');
default:
for (var i = 0, c = require.paths.length; i < c; i++) {
var dir = require.paths[i];
if (dir.charAt(dir.length - 1) !== '/') {
dir += '/';
}
var resolved = dir + file;
if (resolved = modulePath(resolved)) {
return resolved;
}
}
return null;
break;
}
function modulePath(file) {
if (require.exists(file)) {
return file;
}
file = file.slice(0, -3) + '/index.js';
if (require.exists(file)) {
return file;
}
return null;
}
};
//
// Loads a JavaScript file async if it is not already loaded. The given
// {files} must be absolute paths.
//
// @param {files...} the files to load
//
require.load = function() {
var promise = require.load.defer();
var files = Array.prototype.slice.call(arguments);
var toLoad = files.length;
// Iterate through the files and load each one
for (var i = 0, c = files.length; i < c; i++) {
var file = files[i];
if (file.charAt(0) !== '/') {
file = '/' + file;
}
file = require.dir + file;
if (file.slice(-3) !== '.js') {
file += '.js';
}
// Create the script tag
var script = require.load.createScript({
src: file,
defer: true,
async: true
});
// Set an onl oad handler
script.onload = script.onreadystatechange = function() {
if (! script.readyState || script.readyState === 'loaded' || script.readyState === 'complete') {
// Cleanup
script.onload = script.onreadystatechange = null;
if (head && script.parentNode) {
head.removeChild(script);
}
// Mark the file as loaded and check if we are done
if (! --toLoad) {
promise.resolve();
}
}
};
// Inject the script
head.appendChild(script);
}
return promise;
};
//
// Create a deferred
//
require.load.defer = function() {
var promise = {
funcs: [ ],
passed: false,
then: function(func) {
if (promise.passed) {
setTimeout(func, 0);
} else {
promise.funcs.push(func);
}
},
resolve: function() {
promise.passed = true;
for (var i = 0, c = promise.funcs.length; i < c; i++) {
setTimeout(promise.funcs[i], 0);
}
}
};
return promise;
};
//
// Check if a list of files has been loaded
//
// @param {files} a list of module files to check on
//
require.loaded = function(files) {
var loaded = true;
for (var i = 0, c = files.length; i < c; i++) {
if (! require.resolve(files[i])) {
loaded = false;
break;
}
}
return loaded;
};
//
// This is where modules are stored
//
// require._modules[*] = {
// loaded: Bool,
// exports: Mixed,
// filename: String,
// require: Function,
// parent: module,
// children: [module],
// call: Function
// }
//
require._modules = { };
//
// Determine if the given module exists. We use {hasOwnProperty} here to be extra
// careful, but it should never actually be an issue as all of the module property
// names should begin with a slash, and if anyone is defining new prototype properties
// that start with a slash, they deserve what is coming to them...
//
// @param {file} an absolute module path
//
require.exists = (require._modules.hasOwnProperty
? function(file) {
return require._modules.hasOwnProperty(file);
}
: function(file) {
return (file in require._modules[file]);
});
//
// Return a copy of {require} that is bound to the scope of a module. This is
// used to create the copy store on modules at {module.require}.
//
// @param {module} the module object to bind to
//
require._bind = function(module) {
var result = function(file, from) {
return require(file, from || module);
};
result.lookup = function(file, from) {
return require.lookup(file, from || module);
};
result.resolve = function(file, from) {
return require.resolve(file, from || module);
};
result.load = function() {
return require.load.apply(require, arguments);
};
result._modules = require._modules;
return result;
};
}(window));
二、require.js源码（非压缩版）
1、AMD是提前执行，AMD中require的所有模块都会先加载完成，
2、CMD是延迟执行，CMD中require的模块再需要的时候再去执行
/** vim: et:ts=4:sw=4:sts=4
* @license RequireJS 2.3.6 Copyright jQuery Foundation and other contributors.
* Released under MIT license, https://github.com/requirejs/requirejs/blob/master/LICENSE
*/
//Not using strict: uneven strict support in browsers, #392, and causes
//problems with requirejs.exec()/transpiler plugins that may not be strict.
/*jslint regexp: true, nomen: true, sloppy: true */
/*global window, navigator, document, importScripts, setTimeout, opera */
var requirejs, require, define;
(function (global, setTimeout) {
var req, s, head, baseElement, dataMain, src,
interactiveScript, currentlyAddingScript, mainScript, subPath,
version = '2.3.6',
commentRegExp = /\/\*[\s\S]*?\*\/|([^:"'=]|^)\/\/.*$/mg,
cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,
jsSuffixRegExp = /\.js$/,
currDirRegExp = /^\.\//,
op = Object.prototype,
ostring = op.toString,
hasOwn = op.hasOwnProperty,
isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document),
isWebWorker = !isBrowser && typeof importScripts !== 'undefined',
//PS3 indicates loaded and complete, but need to wait for complete
//specifically. Sequence is 'loading', 'loaded', execution,
// then 'complete'. The UA check is unfortunate, but not sure how
//to feature test w/o causing perf issues.
readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
/^complete$/ : /^(complete|loaded)$/,
defContextName = '_',
//Oh the tragedy, detecting opera. See the usage of isOpera for reason.
isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]',
contexts = {},
cfg = {},
globalDefQueue = [],
useInteractive = false;
//Could match something like ')//comment', do not lose the prefix to comment.
function commentReplace(match, singlePrefix) {
return singlePrefix || '';
}
function isFunction(it) {
return ostring.call(it) === '[object Function]';
}
function isArray(it) {
return ostring.call(it) === '[object Array]';
}
/**
* Helper function for iterating over an array. If the func returns
* a true value, it will break out of the loop.
*/
function each(ary, func) {
if (ary) {
var i;
for (i = 0; i < ary.length; i += 1) {
if (ary[i] && func(ary[i], i, ary)) {
break;
}
}
}
}
/**
* Helper function for iterating over an array backwards. If the func
* returns a true value, it will break out of the loop.
*/
function eachReverse(ary, func) {
if (ary) {
var i;
for (i = ary.length - 1; i > -1; i -= 1) {
if (ary[i] && func(ary[i], i, ary)) {
break;
}
}
}
}
function hasProp(obj, prop) {
return hasOwn.call(obj, prop);
}
function getOwn(obj, prop) {
return hasProp(obj, prop) && obj[prop];
}
/**
* Cycles over properties in an object and calls a function for each
* property value. If the function returns a truthy value, then the
* iteration is stopped.
*/
function eachProp(obj, func) {
var prop;
for (prop in obj) {
if (hasProp(obj, prop)) {
if (func(obj[prop], prop)) {
break;
}
}
}
}
/**
* Simple function to mix in properties from source into target,
* but only if target does not already have a property of the same name.
*/
function mixin(target, source, force, deepStringMixin) {
if (source) {
eachProp(source, function (value, prop) {
if (force || !hasProp(target, prop)) {
if (deepStringMixin && typeof value === 'object' && value &&
!isArray(value) && !isFunction(value) &&
!(value instanceof RegExp)) {
if (!target[prop]) {
target[prop] = {};
}
mixin(target[prop], value, force, deepStringMixin);
} else {
target[prop] = value;
}
}
});
}
return target;
}
//Similar to Function.prototype.bind, but the 'this' object is specified
//first, since it is easier to read/figure out what 'this' will be.
function bind(obj, fn) {
return function () {
return fn.apply(obj, arguments);
};
}
function scripts() {
return document.getElementsByTagName('script');
}
function defaultOnError(err) {
throw err;
}
//Allow getting a global that is expressed in
//dot notation, like 'a.b.c'.
function getGlobal(value) {
if (!value) {
return value;
}
var g = global;
each(value.split('.'), function (part) {
g = g[part];
});
return g;
}
/**
* Constructs an error with a pointer to an URL with more information.
* @param {String} id the error ID that maps to an ID on a web page.
* @param {String} message human readable error.
* @param {Error} [err] the original error, if there is one.
*
* @returns {Error}
*/
function makeError(id, msg, err, requireModules) {
var e = new Error(msg + '\nhttps://requirejs.org/docs/errors.html#' + id);
e.requireType = id;
e.requireModules = requireModules;
if (err) {
e.originalError = err;
}
return e;
}
if (typeof define !== 'undefined') {
//If a define is already in play via another AMD loader,
//do not overwrite.
return;
}
if (typeof requirejs !== 'undefined') {
if (isFunction(requirejs)) {
//Do not overwrite an existing requirejs instance.
return;
}
cfg = requirejs;
requirejs = undefined;
}
//Allow for a require config object
if (typeof require !== 'undefined' && !isFunction(require)) {
//assume it is a config object.
cfg = require;
require = undefined;
}
function newContext(contextName) {
var inCheckLoaded, Module, context, handlers,
checkLoadedTimeoutId,
config = {
//Defaults. Do not set a default for map
//config to speed up normalize(), which
//will run faster if there is no default.
waitSeconds: 7,
baseUrl: './',
paths: {},
bundles: {},
pkgs: {},
shim: {},
config: {}
},
registry = {},
//registry of just enabled modules, to speed
//cycle breaking code when lots of modules
//are registered, but not activated.
enabledRegistry = {},
undefEvents = {},
defQueue = [],
defined = {},
urlFetched = {},
bundlesMap = {},
requireCounter = 1,
unnormalizedCounter = 1;
/**
* Trims the . and .. from an array of path segments.
* It will keep a leading path segment if a .. will become
* the first path segment, to help with module name lookups,
* which act like paths, but can be remapped. But the end result,
* all paths that use this function should look normalized.
* NOTE: this method MODIFIES the input array.
* @param {Array} ary the array of path segments.
*/
function trimDots(ary) {
var i, part;
for (i = 0; i < ary.length; i++) {
part = ary[i];
if (part === '.') {
ary.splice(i, 1);
i -= 1;
} else if (part === '..') {
// If at the start, or previous value is still ..,
// keep them so that when converted to a path it may
// still work when converted to a path, even though
// as an ID it is less than ideal. In larger point
// releases, may be better to just kick out an error.
if (i === 0 || (i === 1 && ary[2] === '..') || ary[i - 1] === '..') {
continue;
} else if (i > 0) {
ary.splice(i - 1, 2);
i -= 2;
}
}
}
}
/**
* Given a relative module name, like ./something, normalize it to
* a real name that can be mapped to a path.
* @param {String} name the relative name
* @param {String} baseName a real name that the name arg is relative
* to.
* @param {Boolean} applyMap apply the map config to the value. Should
* only be done if this normalization is for a dependency ID.
* @returns {String} normalized name
*/
function normalize(name, baseName, applyMap) {
var pkgMain, mapValue, nameParts, i, j, nameSegment, lastIndex,
foundMap, foundI, foundStarMap, starI, normalizedBaseParts,
baseParts = (baseName && baseName.split('/')),
map = config.map,
starMap = map && map['*'];
//Adjust any relative paths.
if (name) {
name = name.split('/');
lastIndex = name.length - 1;
// If wanting node ID compatibility, strip .js from end
// of IDs. Have to do this here, and not in nameToUrl
// because node allows either .js or non .js to map
// to same file.
if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
}
// Starts with a '.' so need the baseName
if (name[0].charAt(0) === '.' && baseParts) {
//Convert baseName to array, and lop off the last part,
//so that . matches that 'directory' and not name of the baseName's
//module. For instance, baseName of 'one/two/three', maps to
//'one/two/three.js', but we want the directory, 'one/two' for
//this normalization.
normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
name = normalizedBaseParts.concat(name);
}
trimDots(name);
name = name.join('/');
}
//Apply map config if available.
if (applyMap && map && (baseParts || starMap)) {
nameParts = name.split('/');
outerLoop: for (i = nameParts.length; i > 0; i -= 1) {
nameSegment = nameParts.slice(0, i).join('/');
if (baseParts) {
//Find the longest baseName segment match in the config.
//So, do joins on the biggest to smallest lengths of baseParts.
for (j = baseParts.length; j > 0; j -= 1) {
mapValue = getOwn(map, baseParts.slice(0, j).join('/'));
//baseName segment has config, find if it has one for
//this name.
if (mapValue) {
mapValue = getOwn(mapValue, nameSegment);
if (mapValue) {
//Match, update name to the new value.
foundMap = mapValue;
foundI = i;
break outerLoop;
}
}
}
}
//Check for a star map match, but just hold on to it,
//if there is a shorter segment match later in a matching
//config, then favor over this star map.
if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) {
foundStarMap = getOwn(starMap, nameSegment);
starI = i;
}
}
if (!foundMap && foundStarMap) {
foundMap = foundStarMap;
foundI = starI;
}
if (foundMap) {
nameParts.splice(0, foundI, foundMap);
name = nameParts.join('/');
}
}
// If the name points to a package's name, use
// the package main instead.
pkgMain = getOwn(config.pkgs, name);
return pkgMain ? pkgMain : name;
}
function removeScript(name) {
if (isBrowser) {
each(scripts(), function (scriptNode) {
if (scriptNode.getAttribute('data-requiremodule') === name &&
scriptNode.getAttribute('data-requirecontext') === context.contextName) {
scriptNode.parentNode.removeChild(scriptNode);
return true;
}
});
}
}
function hasPathFallback(id) {
var pathConfig = getOwn(config.paths, id);
if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) {
//Pop off the first array value, since it failed, and
//retry
pathConfig.shift();
context.require.undef(id);
//Custom require that does not do map translation, since
//ID is "absolute", already mapped/resolved.
context.makeRequire(null, {
skipMap: true
})([id]);
return true;
}
}
//Turns a plugin!resource to [plugin, resource]
//with the plugin being undefined if the name
//did not have a plugin prefix.
function splitPrefix(name) {
var prefix,
index = name ? name.indexOf('!') : -1;
if (index > -1) {
prefix = name.substring(0, index);
name = name.substring(index + 1, name.length);
}
return [prefix, name];
}
/**
* Creates a module mapping that includes plugin prefix, module
* name, and path. If parentModuleMap is provided it will
* also normalize the name via require.normalize()
*
* @param {String} name the module name
* @param {String} [parentModuleMap] parent module map
* for the module name, used to resolve relative names.
* @param {Boolean} isNormalized: is the ID already normalized.
* This is true if this call is done for a define() module ID.
* @param {Boolean} applyMap: apply the map config to the ID.
* Should only be true if this map is for a dependency.
*
* @returns {Object}
*/
function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) {
var url, pluginModule, suffix, nameParts,
prefix = null,
parentName = parentModuleMap ? parentModuleMap.name : null,
originalName = name,
isDefine = true,
normalizedName = '';
//If no name, then it means it is a require call, generate an
//internal name.
if (!name) {
isDefine = false;
name = '_@r' + (requireCounter += 1);
}
nameParts = splitPrefix(name);
prefix = nameParts[0];
name = nameParts[1];
if (prefix) {
prefix = normalize(prefix, parentName, applyMap);
pluginModule = getOwn(defined, prefix);
}
//Account for relative paths if there is a base name.
if (name) {
if (prefix) {
if (isNormalized) {
normalizedName = name;
} else if (pluginModule && pluginModule.normalize) {
//Plugin is loaded, use its normalize method.
normalizedName = pluginModule.normalize(name, function (name) {
return normalize(name, parentName, applyMap);
});
} else {
// If nested plugin references, then do not try to
// normalize, as it will not normalize correctly. This
// places a restriction on resourceIds, and the longer
// term solution is not to normalize until plugins are
// loaded and all normalizations to allow for async
// loading of a loader plugin. But for now, fixes the
// common uses. Details in #1131
normalizedName = name.indexOf('!') === -1 ?
normalize(name, parentName, applyMap) :
name;
}
} else {
//A regular module.
normalizedName = normalize(name, parentName, applyMap);
//Normalized name may be a plugin ID due to map config
//application in normalize. The map config values must
//already be normalized, so do not need to redo that part.
nameParts = splitPrefix(normalizedName);
prefix = nameParts[0];
normalizedName = nameParts[1];
isNormalized = true;
url = context.nameToUrl(normalizedName);
}
}
//If the id is a plugin id that cannot be determined if it needs
//normalization, stamp it with a unique ID so two matching relative
//ids that may conflict can be separate.
suffix = prefix && !pluginModule && !isNormalized ?
'_unnormalized' + (unnormalizedCounter += 1) :
'';
return {
prefix: prefix,
name: normalizedName,
parentMap: parentModuleMap,
unnormalized: !!suffix,
url: url,
originalName: originalName,
isDefine: isDefine,
id: (prefix ?
prefix + '!' + normalizedName :
normalizedName) + suffix
};
}
function getModule(depMap) {
var id = depMap.id,
mod = getOwn(registry, id);
if (!mod) {
mod = registry[id] = new context.Module(depMap);
}
return mod;
}
function on(depMap, name, fn) {
var id = depMap.id,
mod = getOwn(registry, id);
if (hasProp(defined, id) &&
(!mod || mod.defineEmitComplete)) {
if (name === 'defined') {
fn(defined[id]);
}
} else {
mod = getModule(depMap);
if (mod.error && name === 'error') {
fn(mod.error);
} else {
mod.on(name, fn);
}
}
}
function one rror(err, errback) {
var ids = err.requireModules,
notified = false;
if (errback) {
errback(err);
} else {
each(ids, function (id) {
var mod = getOwn(registry, id);
if (mod) {
//Set error on module, so it skips timeout checks.
mod.error = err;
if (mod.events.error) {
notified = true;
mod.emit('error', err);
}
}
});
if (!notified) {
req.onError(err);
}
}
}
/**
* Internal method to transfer globalQueue items to this context's
* defQueue.
*/
function takeGlobalQueue() {
//Push all the globalDefQueue items into the context's defQueue
if (globalDefQueue.length) {
each(globalDefQueue, function(queueItem) {
var id = queueItem[0];
if (typeof id === 'string') {
context.defQueueMap[id] = true;
}
defQueue.push(queueItem);
});
globalDefQueue = [];
}
}
handlers = {
'require': function (mod) {
if (mod.require) {
return mod.require;
} else {
return (mod.require = context.makeRequire(mod.map));
}
},
'exports': function (mod) {
mod.usingExports = true;
if (mod.map.isDefine) {
if (mod.exports) {
return (defined[mod.map.id] = mod.exports);
} else {
return (mod.exports = defined[mod.map.id] = {});
}
}
},
'module': function (mod) {
if (mod.module) {
return mod.module;
} else {
return (mod.module = {
id: mod.map.id,
uri: mod.map.url,
config: function () {
return getOwn(config.config, mod.map.id) || {};
},
exports: mod.exports || (mod.exports = {})
});
}
}
};
function cleanRegistry(id) {
//Clean up machinery used for waiting modules.
delete registry[id];
delete enabledRegistry[id];
}
function breakCycle(mod, traced, processed) {
var id = mod.map.id;
if (mod.error) {
mod.emit('error', mod.error);
} else {
traced[id] = true;
each(mod.depMaps, function (depMap, i) {
var depId = depMap.id,
dep = getOwn(registry, depId);
//Only force things that have not completed
//being defined, so still in the registry,
//and only if it has not been matched up
//in the module already.
if (dep && !mod.depMatched[i] && !processed[depId]) {
if (getOwn(traced, depId)) {
mod.defineDep(i, defined[depId]);
mod.check(); //pass false?
} else {
breakCycle(dep, traced, processed);
}
}
});
processed[id] = true;
}
}
function checkLoaded() {
var err, usingPathFallback,
waitInterval = config.waitSeconds * 1000,
//It is possible to disable the wait interval by using waitSeconds of 0.
expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
noLoads = [],
reqCalls = [],
stillLoading = false,
needCycleCheck = true;
//Do not bother if this call was a result of a cycle break.
if (inCheckLoaded) {
return;
}
inCheckLoaded = true;
//Figure out the state of all the modules.
eachProp(enabledRegistry, function (mod) {
var map = mod.map,
modId = map.id;
//Skip things that are not enabled or in error state.
if (!mod.enabled) {
return;
}
if (!map.isDefine) {
reqCalls.push(mod);
}
if (!mod.error) {
//If the module should be executed, and it has not
//been inited and time is up, remember it.
if (!mod.inited && expired) {
if (hasPathFallback(modId)) {
usingPathFallback = true;
stillLoading = true;
} else {
noLoads.push(modId);
removeScript(modId);
}
} else if (!mod.inited && mod.fetched && map.isDefine) {
stillLoading = true;
if (!map.prefix) {
//No reason to keep looking for unfinished
//loading. If the only stillLoading is a
//plugin resource though, keep going,
//because it may be that a plugin resource
//is waiting on a non-plugin cycle.
return (needCycleCheck = false);
}
}
}
});
if (expired && noLoads.length) {
//If wait time expired, throw error of unloaded modules.
err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads);
err.contextName = context.contextName;
return one rror(err);
}
//Not expired, check for a cycle.
if (needCycleCheck) {
each(reqCalls, function (mod) {
breakCycle(mod, {}, {});
});
}
//If still waiting on loads, and the waiting load is something
//other than a plugin resource, or there are still outstanding
//scripts, then just try back later.
if ((!expired || usingPathFallback) && stillLoading) {
//Something is still waiting to load. Wait for it, but only
//if a timeout is not already in effect.
if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
checkLoadedTimeoutId = setTimeout(function () {
checkLoadedTimeoutId = 0;
checkLoaded();
}, 50);
}
}
inCheckLoaded = false;
}
Module = function (map) {
this.events = getOwn(undefEvents, map.id) || {};
this.map = map;
this.shim = getOwn(config.shim, map.id);
this.depExports = [];
this.depMaps = [];
this.depMatched = [];
this.pluginMaps = {};
this.depCount = 0;
/* this.exports this.factory
this.depMaps = [],
this.enabled, this.fetched
*/
};
Module.prototype = {
init: function (depMaps, factory, errback, options) {
options = options || {};
//Do not do more inits if already done. Can happen if there
//are multiple define calls for the same module. That is not
//a normal, common case, but it is also not unexpected.
if (this.inited) {
return;
}
this.factory = factory;
if (errback) {
//Register for errors on this module.
this.on('error', errback);
} else if (this.events.error) {
//If no errback already, but there are error listeners
//on this module, set up an errback to pass to the deps.
errback = bind(this, function (err) {
this.emit('error', err);
});
}
//Do a copy of the dependency array, so that
//source inputs are not modified. For example
//"shim" deps are passed in here directly, and
//doing a direct modification of the depMaps array
//would affect that config.
this.depMaps = depMaps && depMaps.slice(0);
this.errback = errback;
//Indicate this module has be initialized
this.inited = true;
this.ignore = options.ignore;
//Could have option to init this module in enabled mode,
//or could have been previously marked as enabled. However,
//the dependencies are not known until init is called. So
//if enabled previously, now trigger dependencies as enabled.
if (options.enabled || this.enabled) {
//Enable this module and dependencies.
//Will call this.check()
this.enable();
} else {
this.check();
}
},
defineDep: function (i, depExports) {
//Because of cycles, defined callback for a given
//export can be called more than once.
if (!this.depMatched[i]) {
this.depMatched[i] = true;
this.depCount -= 1;
this.depExports[i] = depExports;
}
},
fetch: function () {
if (this.fetched) {
return;
}
this.fetched = true;
context.startTime = (new Date()).getTime();
var map = this.map;
//If the manager is for a plugin managed resource,
//ask the plugin to load it now.
if (this.shim) {
context.makeRequire(this.map, {
enableBuildCallback: true
})(this.shim.deps || [], bind(this, function () {
return map.prefix ? this.callPlugin() : this.load();
}));
} else {
//Regular dependency.
return map.prefix ? this.callPlugin() : this.load();
}
},
load: function () {
var url = this.map.url;
//Regular dependency.
if (!urlFetched[url]) {
urlFetched[url] = true;
context.load(this.map.id, url);
}
},
/**
* Checks if the module is ready to define itself, and if so,
* define it.
*/
check: function () {
if (!this.enabled || this.enabling) {
return;
}
var err, cjsModule,
id = this.map.id,
depExports = this.depExports,
exports = this.exports,
factory = this.factory;
if (!this.inited) {
// Only fetch if not already in the defQueue.
if (!hasProp(context.defQueueMap, id)) {
this.fetch();
}
} else if (this.error) {
this.emit('error', this.error);
} else if (!this.defining) {
//The factory could trigger another require call
//that would result in checking this module to
//define itself again. If already in the process
//of doing that, skip this work.
this.defining = true;
if (this.depCount < 1 && !this.defined) {
if (isFunction(factory)) {
//If there is an error listener, favor passing
//to that instead of throwing an error. However,
//only do it for define()'d modules. require
//errbacks should not be called for failures in
//their callbacks (#699). However if a global
//onError is set, use that.
if ((this.events.error && this.map.isDefine) ||
req.onError !== defaultOnError) {
try {
exports = context.execCb(id, factory, depExports, exports);
} catch (e) {
err = e;
}
} else {
exports = context.execCb(id, factory, depExports, exports);
}
// Favor return value over exports. If node/cjs in play,
// then will not have a return value anyway. Favor
// module.exports assignment over exports object.
if (this.map.isDefine && exports === undefined) {
cjsModule = this.module;
if (cjsModule) {
exports = cjsModule.exports;
} else if (this.usingExports) {
//exports already set the defined value.
exports = this.exports;
}
}
if (err) {
err.requireMap = this.map;
err.requireModules = this.map.isDefine ? [this.map.id] : null;
err.requireType = this.map.isDefine ? 'define' : 'require';
return one rror((this.error = err));
}
} else {
//Just a literal value
exports = factory;
}
this.exports = exports;
if (this.map.isDefine && !this.ignore) {
defined[id] = exports;
if (req.onResourceLoad) {
var resLoadMaps = [];
each(this.depMaps, function (depMap) {
resLoadMaps.push(depMap.normalizedMap || depMap);
});
req.onResourceLoad(context, this.map, resLoadMaps);
}
}
//Clean up
cleanRegistry(id);
this.defined = true;
}
//Finished the define stage. Allow calling check again
//to allow define notifications below in the case of a
//cycle.
this.defining = false;
if (this.defined && !this.defineEmitted) {
this.defineEmitted = true;
this.emit('defined', this.exports);
this.defineEmitComplete = true;
}
}
},
callPlugin: function () {
var map = this.map,
id = map.id,
//Map already normalized the prefix.
pluginMap = makeModuleMap(map.prefix);
//Mark this as a dependency for this plugin, so it
//can be traced for cycles.
this.depMaps.push(pluginMap);
on(pluginMap, 'defined', bind(this, function (plugin) {
var load, normalizedMap, normalizedMod,
bundleId = getOwn(bundlesMap, this.map.id),
name = this.map.name,
parentName = this.map.parentMap ? this.map.parentMap.name : null,
localRequire = context.makeRequire(map.parentMap, {
enableBuildCallback: true
});
//If current map is not normalized, wait for that
//normalized name to load instead of continuing.
if (this.map.unnormalized) {
//Normalize the ID if the plugin allows it.
if (plugin.normalize) {
name = plugin.normalize(name, function (name) {
return normalize(name, parentName, true);
}) || '';
}
//prefix and name should already be normalized, no need
//for applying map config again either.
normalizedMap = makeModuleMap(map.prefix + '!' + name,
this.map.parentMap,
true);
on(normalizedMap,
'defined', bind(this, function (value) {
this.map.normalizedMap = normalizedMap;
this.init([], function () { return value; }, null, {
enabled: true,
ignore: true
});
}));
normalizedMod = getOwn(registry, normalizedMap.id);
if (normalizedMod) {
//Mark this as a dependency for this plugin, so it
//can be traced for cycles.
this.depMaps.push(normalizedMap);
if (this.events.error) {
normalizedMod.on('error', bind(this, function (err) {
this.emit('error', err);
}));
}
normalizedMod.enable();
}
return;
}
//If a paths config, then just load that file instead to
//resolve the plugin, as it is built into that paths layer.
if (bundleId) {
this.map.url = context.nameToUrl(bundleId);
this.load();
return;
}
load = bind(this, function (value) {
this.init([], function () { return value; }, null, {
enabled: true
});
});
load.error = bind(this, function (err) {
this.inited = true;
this.error = err;
err.requireModules = [id];
//Remove temp unnormalized modules for this module,
//since they will never be resolved otherwise now.
eachProp(registry, function (mod) {
if (mod.map.id.indexOf(id + '_unnormalized') === 0) {
cleanRegistry(mod.map.id);
}
});
one rror(err);
});
//Allow plugins to load other code without having to know the
//context or how to 'complete' the load.
load.fromText = bind(this, function (text, textAlt) {
/*jslint evil: true */
var moduleName = map.name,
moduleMap = makeModuleMap(moduleName),
hasInteractive = useInteractive;
//As of 2.1.0, support just passing the text, to reinforce
//fromText only being called once per resource. Still
//support old style of passing moduleName but discard
//that moduleName in favor of the internal ref.
if (textAlt) {
text = textAlt;
}
//Turn off interactive script matching for IE for any define
//calls in the text, then turn it back on at the end.
if (hasInteractive) {
useInteractive = false;
}
//Prime the system by creating a module instance for
//it.
getModule(moduleMap);
//Transfer any config to this other module.
if (hasProp(config.config, id)) {
config.config[moduleName] = config.config[id];
}
try {
req.exec(text);
} catch (e) {
return one rror(makeError('fromtexteval',
'fromText eval for ' + id +
' failed: ' + e,
e,
[id]));
}
if (hasInteractive) {
useInteractive = true;
}
//Mark this as a dependency for the plugin
//resource
this.depMaps.push(moduleMap);
//Support anonymous modules.
context.completeLoad(moduleName);
//Bind the value of that module to the value for this
//resource ID.
localRequire([moduleName], load);
});
//Use parentName here since the plugin's name is not reliable,
//could be some weird string with no path that actually wants to
//reference the parentName's path.
plugin.load(map.name, localRequire, load, config);
}));
context.enable(pluginMap, this);
this.pluginMaps[pluginMap.id] = pluginMap;
},
enable: function () {
enabledRegistry[this.map.id] = this;
this.enabled = true;
//Set flag mentioning that the module is enabling,
//so that immediate calls to the defined callbacks
//for dependencies do not trigger inadvertent load
//with the depCount still being zero.
this.enabling = true;
//Enable each dependency
each(this.depMaps, bind(this, function (depMap, i) {
var id, mod, handler;
if (typeof depMap === 'string') {
//Dependency needs to be converted to a depMap
//and wired up to this module.
depMap = makeModuleMap(depMap,
(this.map.isDefine ? this.map : this.map.parentMap),
false,
!this.skipMap);
this.depMaps[i] = depMap;
handler = getOwn(handlers, depMap.id);
if (handler) {
this.depExports[i] = handler(this);
return;
}
this.depCount += 1;
on(depMap, 'defined', bind(this, function (depExports) {
if (this.undefed) {
return;
}
this.defineDep(i, depExports);
this.check();
}));
if (this.errback) {
on(depMap, 'error', bind(this, this.errback));
} else if (this.events.error) {
// No direct errback on this module, but something
// else is listening for errors, so be sure to
// propagate the error correctly.
on(depMap, 'error', bind(this, function(err) {
this.emit('error', err);
}));
}
}
id = depMap.id;
mod = registry[id];
//Skip special modules like 'require', 'exports', 'module'
//Also, don't call enable if it is already enabled,
//important in circular dependency cases.
if (!hasProp(handlers, id) && mod && !mod.enabled) {
context.enable(depMap, this);
}
}));
//Enable each plugin that is used in
//a dependency
eachProp(this.pluginMaps, bind(this, function (pluginMap) {
var mod = getOwn(registry, pluginMap.id);
if (mod && !mod.enabled) {
context.enable(pluginMap, this);
}
}));
this.enabling = false;
this.check();
},
on: function (name, cb) {
var cbs = this.events[name];
if (!cbs) {
cbs = this.events[name] = [];
}
cbs.push(cb);
},
emit: function (name, evt) {
each(this.events[name], function (cb) {
cb(evt);
});
if (name === 'error') {
//Now that the error handler was triggered, remove
//the listeners, since this broken Module instance
//can stay around for a while in the registry.
delete this.events[name];
}
}
};
function callGetModule(args) {
//Skip modules already defined.
if (!hasProp(defined, args[0])) {
getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]);
}
}
function removeListener(node, func, name, ieName) {
//Favor detachEvent because of IE9
//issue, see attachEvent/addEventListener comment elsewhere
//in this file.
if (node.detachEvent && !isOpera) {
//Probably IE. If not it will throw an error, which will be
//useful to know.
if (ieName) {
node.detachEvent(ieName, func);
}
} else {
node.removeEventListener(name, func, false);
}
}
/**
* Given an event from a script node, get the requirejs info from it,
* and then removes the event listeners on the node.
* @param {Event} evt
* @returns {Object}
*/
function getScriptData(evt) {
//Using currentTarget instead of target for Firefox 2.0's sake. Not
//all old browsers will be supported, but this one was easy enough
//to support and still makes sense.
var node = evt.currentTarget || evt.srcElement;
//Remove the listeners once here.
removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange');
removeListener(node, context.onScriptError, 'error');
return {
node: node,
id: node && node.getAttribute('data-requiremodule')
};
}
function intakeDefines() {
var args;
//Any defined modules in the global queue, intake them now.
takeGlobalQueue();
//Make sure any remaining defQueue items get properly processed.
while (defQueue.length) {
args = defQueue.shift();
if (args[0] === null) {
return one rror(makeError('mismatch', 'Mismatched anonymous define() module: ' +
args[args.length - 1]));
} else {
//args are id, deps, factory. Should be normalized by the
//define() function.
callGetModule(args);
}
}
context.defQueueMap = {};
}
context = {
config: config,
contextName: contextName,
registry: registry,
defined: defined,
urlFetched: urlFetched,
defQueue: defQueue,
defQueueMap: {},
Module: Module,
makeModuleMap: makeModuleMap,
nextTick: req.nextTick,
one rror: one rror,
/**
* Set a configuration for the context.
* @param {Object} cfg config object to integrate.
*/
configure: function (cfg) {
//Make sure the baseUrl ends in a slash.
if (cfg.baseUrl) {
if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') {
cfg.baseUrl += '/';
}
}
// Convert old style urlArgs string to a function.
if (typeof cfg.urlArgs === 'string') {
var urlArgs = cfg.urlArgs;
cfg.urlArgs = function(id, url) {
return (url.indexOf('?') === -1 ? '?' : '&') + urlArgs;
};
}
//Save off the paths since they require special processing,
//they are additive.
var shim = config.shim,
objs = {
paths: true,
bundles: true,
config: true,
map: true
};
eachProp(cfg, function (value, prop) {
if (objs[prop]) {
if (!config[prop]) {
config[prop] = {};
}
mixin(config[prop], value, true, true);
} else {
config[prop] = value;
}
});
//Reverse map the bundles
if (cfg.bundles) {
eachProp(cfg.bundles, function (value, prop) {
each(value, function (v) {
if (v !== prop) {
bundlesMap[v] = prop;
}
});
});
}
//Merge shim
if (cfg.shim) {
eachProp(cfg.shim, function (value, id) {
//Normalize the structure
if (isArray(value)) {
value = {
deps: value
};
}
if ((value.exports || value.init) && !value.exportsFn) {
value.exportsFn = context.makeShimExports(value);
}
shim[id] = value;
});
config.shim = shim;
}
//Adjust packages if necessary.
if (cfg.packages) {
each(cfg.packages, function (pkgObj) {
var location, name;
pkgObj = typeof pkgObj === 'string' ? {name: pkgObj} : pkgObj;
name = pkgObj.name;
location = pkgObj.location;
if (location) {
config.paths[name] = pkgObj.location;
}
//Save pointer to main module ID for pkg name.
//Remove leading dot in main, so main paths are normalized,
//and remove any trailing .js, since different package
//envs have different conventions: some use a module name,
//some use a file name.
config.pkgs[name] = pkgObj.name + '/' + (pkgObj.main || 'main')
.replace(currDirRegExp, '')
.replace(jsSuffixRegExp, '');
});
}
//If there are any "waiting to execute" modules in the registry,
//update the maps for them, since their info, like URLs to load,
//may have changed.
eachProp(registry, function (mod, id) {
//If module already has init called, since it is too
//late to modify them, and ignore unnormalized ones
//since they are transient.
if (!mod.inited && !mod.map.unnormalized) {
mod.map = makeModuleMap(id, null, true);
}
});
//If a deps array or a config callback is specified, then call
//require with those args. This is useful when require is defined as a
//config object before require.js is loaded.
if (cfg.deps || cfg.callback) {
context.require(cfg.deps || [], cfg.callback);
}
},
makeShimExports: function (value) {
function fn() {
var ret;
if (value.init) {
ret = value.init.apply(global, arguments);
}
return ret || (value.exports && getGlobal(value.exports));
}
return fn;
},
makeRequire: function (relMap, options) {
options = options || {};
function localRequire(deps, callback, errback) {
var id, map, requireMod;
if (options.enableBuildCallback && callback && isFunction(callback)) {
callback.__requireJsBuild = true;
}
if (typeof deps === 'string') {
if (isFunction(callback)) {
//Invalid call
return one rror(makeError('requireargs', 'Invalid require call'), errback);
}
//If require|exports|module are requested, get the
//value for them from the special handlers. Caveat:
//this only works while module is being defined.
if (relMap && hasProp(handlers, deps)) {
return handlers[deps](registry[relMap.id]);
}
//Synchronous access to one module. If require.get is
//available (as in the Node adapter), prefer that.
if (req.get) {
return req.get(context, deps, relMap, localRequire);
}
//Normalize module name, if it contains . or ..
map = makeModuleMap(deps, relMap, false, true);
id = map.id;
if (!hasProp(defined, id)) {
return one rror(makeError('notloaded', 'Module name "' +
id +
'" has not been loaded yet for context: ' +
contextName +
(relMap ? '' : '. Use require([])')));
}
return defined[id];
}
//Grab defines waiting in the global queue.
intakeDefines();
//Mark all the dependencies as needing to be loaded.
context.nextTick(function () {
//Some defines could have been added since the
//require call, collect them.
intakeDefines();
requireMod = getModule(makeModuleMap(null, relMap));
//Store if map config should be applied to this require
//call for dependencies.
requireMod.skipMap = options.skipMap;
requireMod.init(deps, callback, errback, {
enabled: true
});
checkLoaded();
});
return localRequire;
}
mixin(localRequire, {
isBrowser: isBrowser,
/**
* Converts a module name + .extension into an URL path.
* *Requires* the use of a module name. It does not support using
* plain URLs like nameToUrl.
*/
toUrl: function (moduleNamePlusExt) {
var ext,
index = moduleNamePlusExt.lastIndexOf('.'),
segment = moduleNamePlusExt.split('/')[0],
isRelative = segment === '.' || segment === '..';
//Have a file extension alias, and it is not the
//dots from a relative path.
if (index !== -1 && (!isRelative || index > 1)) {
ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
}
return context.nameToUrl(normalize(moduleNamePlusExt,
relMap && relMap.id, true), ext, true);
},
defined: function (id) {
return hasProp(defined, makeModuleMap(id, relMap, false, true).id);
},
specified: function (id) {
id = makeModuleMap(id, relMap, false, true).id;
return hasProp(defined, id) || hasProp(registry, id);
}
});
//Only allow undef on top level require calls
if (!relMap) {
localRequire.undef = function (id) {
//Bind any waiting define() calls to this context,
//fix for #408
takeGlobalQueue();
var map = makeModuleMap(id, relMap, true),
mod = getOwn(registry, id);
mod.undefed = true;
removeScript(id);
delete defined[id];
delete urlFetched[map.url];
delete undefEvents[id];
//Clean queued defines too. Go backwards
//in array so that the splices do not
//mess up the iteration.
eachReverse(defQueue, function(args, i) {
if (args[0] === id) {
defQueue.splice(i, 1);
}
});
delete context.defQueueMap[id];
if (mod) {
//Hold on to listeners in case the
//module will be attempted to be reloaded
//using a different config.
if (mod.events.defined) {
undefEvents[id] = mod.events;
}
cleanRegistry(id);
}
};
}
return localRequire;
},
/**
* Called to enable a module if it is still in the registry
* awaiting enablement. A second arg, parent, the parent module,
* is passed in for context, when this method is overridden by
* the optimizer. Not shown here to keep code compact.
*/
enable: function (depMap) {
var mod = getOwn(registry, depMap.id);
if (mod) {
getModule(depMap).enable();
}
},
/**
* Internal method used by environment adapters to complete a load event.
* A load event could be a script load or just a load pass from a synchronous
* load call.
* @param {String} moduleName the name of the module to potentially complete.
*/
completeLoad: function (moduleName) {
var found, args, mod,
shim = getOwn(config.shim, moduleName) || {},
shExports = shim.exports;
takeGlobalQueue();
while (defQueue.length) {
args = defQueue.shift();
if (args[0] === null) {
args[0] = moduleName;
//If already found an anonymous module and bound it
//to this name, then this is some other anon module
//waiting for its completeLoad to fire.
if (found) {
break;
}
found = true;
} else if (args[0] === moduleName) {
//Found matching define call for this script!
found = true;
}
callGetModule(args);
}
context.defQueueMap = {};
//Do this after the cycle of callGetModule in case the result
//of those calls/init calls changes the registry.
mod = getOwn(registry, moduleName);
if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) {
if (config.enforceDefine && (!shExports || !getGlobal(shExports))) {
if (hasPathFallback(moduleName)) {
return;
} else {
return one rror(makeError('nodefine',
'No define call for ' + moduleName,
null,
[moduleName]));
}
} else {
//A script that does not call define(), so just simulate
//the call for it.
callGetModule([moduleName, (shim.deps || []), shim.exportsFn]);
}
}
checkLoaded();
},
/**
* Converts a module name to a file path. Supports cases where
* moduleName may actually be just an URL.
* Note that it **does not** call normalize on the moduleName,
* it is assumed to have already been normalized. This is an
* internal API, not a public one. Use toUrl for the public API.
*/
nameToUrl: function (moduleName, ext, skipExt) {
var paths, syms, i, parentModule, url,
parentPath, bundleId,
pkgMain = getOwn(config.pkgs, moduleName);
if (pkgMain) {
moduleName = pkgMain;
}
bundleId = getOwn(bundlesMap, moduleName);
if (bundleId) {
return context.nameToUrl(bundleId, ext, skipExt);
}
//If a colon is in the URL, it indicates a protocol is used and it is just
//an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
//or ends with .js, then assume the user meant to use an url and not a module id.
//The slash is important for protocol-less URLs as well as full paths.
if (req.jsExtRegExp.test(moduleName)) {
//Just a plain path, not module name lookup, so just return it.
//Add extension if it is included. This is a bit wonky, only non-.js things pass
//an extension, this method probably needs to be reworked.
url = moduleName + (ext || '');
} else {
//A module that needs to be converted to a path.
paths = config.paths;
syms = moduleName.split('/');
//For each module name segment, see if there is a path
//registered for it. Start with most specific name
//and work up from it.
for (i = syms.length; i > 0; i -= 1) {
parentModule = syms.slice(0, i).join('/');
parentPath = getOwn(paths, parentModule);
if (parentPath) {
//If an array, it means there are a few choices,
//Choose the one that is desired
if (isArray(parentPath)) {
parentPath = parentPath[0];
}
syms.splice(0, i, parentPath);
break;
}
}
//Join the path parts together, then figure out if baseUrl is needed.
url = syms.join('/');
url += (ext || (/^data\:|^blob\:|\?/.test(url) || skipExt ? '' : '.js'));
url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url;
}
return config.urlArgs && !/^blob\:/.test(url) ?
url + config.urlArgs(moduleName, url) : url;
},
//Delegates to req.load. Broken out as a separate function to
//allow overriding in the optimizer.
load: function (id, url) {
req.load(context, id, url);
},
/**
* Executes a module callback function. Broken out as a separate function
* solely to allow the build system to sequence the files in the built
* layer in the right sequence.
*
* @private
*/
execCb: function (name, callback, args, exports) {
return callback.apply(exports, args);
},
/**
* callback for script loads, used to check status of loading.
*
* @param {Event} evt the event from the browser for the script
* that was loaded.
*/
onScriptLoad: function (evt) {
//Using currentTarget instead of target for Firefox 2.0's sake. Not
//all old browsers will be supported, but this one was easy enough
//to support and still makes sense.
if (evt.type === 'load' ||
(readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) {
//Reset interactive script so a script node is not held onto for
//to long.
interactiveScript = null;
//Pull out the name of the module and the context.
var data = getScriptData(evt);
context.completeLoad(data.id);
}
},
/**
* Callback for script errors.
*/
onScriptError: function (evt) {
var data = getScriptData(evt);
if (!hasPathFallback(data.id)) {
var parents = [];
eachProp(registry, function(value, key) {
if (key.indexOf('_@r') !== 0) {
each(value.depMaps, function(depMap) {
if (depMap.id === data.id) {
parents.push(key);
return true;
}
});
}
});
return one rror(makeError('scripterror', 'Script error for "' + data.id +
(parents.length ?
'", needed by: ' + parents.join(', ') :
'"'), evt, [data.id]));
}
}
};
context.require = context.makeRequire();
return context;
}
/**
* Main entry point.
*
* If the only argument to require is a string, then the module that
* is represented by that string is fetched for the appropriate context.
*
* If the first argument is an array, then it will be treated as an array
* of dependency string names to fetch. An optional function callback can
* be specified to execute when all of those dependencies are available.
*
* Make a local req variable to help Caja compliance (it assumes things
* on a require that are not standardized), and to give a short
* name for minification/local scope use.
*/
req = requirejs = function (deps, callback, errback, optional) {
//Find the right context, use default
var context, config,
contextName = defContextName;
// Determine if have config object in the call.
if (!isArray(deps) && typeof deps !== 'string') {
// deps is a config object
config = deps;
if (isArray(callback)) {
// Adjust args if there are dependencies
deps = callback;
callback = errback;
errback = optional;
} else {
deps = [];
}
}
if (config && config.context) {
contextName = config.context;
}
context = getOwn(contexts, contextName);
if (!context) {
context = contexts[contextName] = req.s.newContext(contextName);
}
if (config) {
context.configure(config);
}
return context.require(deps, callback, errback);
};
/**
* Support require.config() to make it easier to cooperate with other
* AMD loaders on globally agreed names.
*/
req.config = function (config) {
return req(config);
};
/**
* Execute something after the current tick
* of the event loop. Override for other envs
* that have a better solution than setTimeout.
* @param {Function} fn function to execute later.
*/
req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) {
setTimeout(fn, 4);
} : function (fn) { fn(); };
/**
* Export require as a global, but only if it does not already exist.
*/
if (!require) {
require = req;
}
req.version = version;
//Used to filter out dependencies that are already paths.
req.jsExtRegExp = /^\/|:|\?|\.js$/;
req.isBrowser = isBrowser;
s = req.s = {
contexts: contexts,
newContext: newContext
};
//Create default context.
req({});
//Exports some context-sensitive methods on global require.
each([
'toUrl',
'undef',
'defined',
'specified'
], function (prop) {
//Reference from contexts instead of early binding to default context,
//so that during builds, the latest instance of the default context
//with its config gets used.
req[prop] = function () {
var ctx = contexts[defContextName];
return ctx.require[prop].apply(ctx, arguments);
};
});
if (isBrowser) {
head = s.head = document.getElementsByTagName('head')[0];
//If BASE tag is in play, using appendChild is a problem for IE6.
//When that browser dies, this can be removed. Details in this jQuery bug:
//http://dev.jquery.com/ticket/2709
baseElement = document.getElementsByTagName('base')[0];
if (baseElement) {
head = s.head = baseElement.parentNode;
}
}
/**
* Any errors that require explicitly generates will be passed to this
* function. Intercept/override it if you want custom error handling.
* @param {Error} err the error object.
*/
req.onError = defaultOnError;
/**
* Creates the node for the load command. Only used in browser envs.
*/
req.createNode = function (config, moduleName, url) {
var node = config.xhtml ?
document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
document.createElement('script');
node.type = config.scriptType || 'text/javascript';
node.charset = 'utf-8';
node.async = true;
return node;
};
/**
* Does the request to load a module for the browser case.
* Make this a separate function to allow other environments
* to override it.
*
* @param {Object} context the require context to find state.
* @param {String} moduleName the name of the module.
* @param {Object} url the URL to the module.
*/
req.load = function (context, moduleName, url) {
var config = (context && context.config) || {},
node;
if (isBrowser) {
//In the browser so use a script tag
node = req.createNode(config, moduleName, url);
node.setAttribute('data-requirecontext', context.contextName);
node.setAttribute('data-requiremodule', moduleName);
//Set up load listener. Test attachEvent first because IE9 has
//a subtle issue in its addEventListener and script onl oad firings
//that do not match the behavior of all other browsers with
//addEventListener support, which fire the onl oad event for a
//script right after the script execution. See:
//https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
//UNFORTUNATELY Opera implements attachEvent but does not follow the script
//script execution mode.
if (node.attachEvent &&
//Check if node.attachEvent is artificially added by custom script or
//natively supported by browser
//read https://github.com/requirejs/requirejs/issues/187
//if we can NOT find [native code] then it must NOT natively supported.
//in IE8, node.attachEvent does not have toString()
//Note the test for "[native code" with no closing brace, see:
//https://github.com/requirejs/requirejs/issues/273
!(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) &&
!isOpera) {
//Probably IE. IE (at least 6-8) do not fire
//script onl oad right after executing the script, so
//we cannot tie the anonymous define call to a name.
//However, IE reports the script as being in 'interactive'
//readyState at the time of the define call.
useInteractive = true;
node.attachEvent('onreadystatechange', context.onScriptLoad);
//It would be great to add an error handler here to catch
//404s in IE9+. However, onreadystatechange will fire before
//the error handler, so that does not help. If addEventListener
//is used, then IE will fire error before load, but we cannot
//use that pathway given the connect.microsoft.com issue
//mentioned above about not doing the 'script execute,
//then fire the script load event listener before execute
//next script' that other browsers do.
//Best hope: IE10 fixes the issues,
//and then destroys all installs of IE 6-9.
//node.attachEvent('onerror', context.onScriptError);
} else {
node.addEventListener('load', context.onScriptLoad, false);
node.addEventListener('error', context.onScriptError, false);
}
node.src = url;
//Calling onNodeCreated after all properties on the node have been
//set, but before it is placed in the DOM.
if (config.onNodeCreated) {
config.onNodeCreated(node, config, moduleName, url);
}
//For some cache cases in IE 6-8, the script executes before the end
//of the appendChild execution, so to tie an anonymous define
//call to the module name (which is stored on the node), hold on
//to a reference to this node, but clear after the DOM insertion.
currentlyAddingScript = node;
if (baseElement) {
head.insertBefore(node, baseElement);
} else {
head.appendChild(node);
}
currentlyAddingScript = null;
return node;
} else if (isWebWorker) {
try {
//In a web worker, use importScripts. This is not a very
//efficient use of importScripts, importScripts will block until
//its script is downloaded and evaluated. However, if web workers
//are in play, the expectation is that a build has been done so
//that only one script needs to be loaded anyway. This may need
//to be reevaluated if other use cases become common.
// Post a task to the event loop to work around a bug in WebKit
// where the worker gets garbage-collected after calling
// importScripts(): https://webkit.org/b/153317
setTimeout(function() {}, 0);
importScripts(url);
//Account for anonymous modules
context.completeLoad(moduleName);
} catch (e) {
context.onError(makeError('importscripts',
'importScripts failed for ' +
moduleName + ' at ' + url,
e,
[moduleName]));
}
}
};
function getInteractiveScript() {
if (interactiveScript && interactiveScript.readyState === 'interactive') {
return interactiveScript;
}
eachReverse(scripts(), function (script) {
if (script.readyState === 'interactive') {
return (interactiveScript = script);
}
});
return interactiveScript;
}
//Look for a data-main script attribute, which could also adjust the baseUrl.
if (isBrowser && !cfg.skipDataMain) {
//Figure out baseUrl. Get it from the script tag with require.js in it.
eachReverse(scripts(), function (script) {
//Set the 'head' where we can append children by
//using the script's parent.
if (!head) {
head = script.parentNode;
}
//Look for a data-main attribute to set main script for the page
//to load. If it is there, the path to data main becomes the
//baseUrl, if it is not already set.
dataMain = script.getAttribute('data-main');
if (dataMain) {
//Preserve dataMain in case it is a path (i.e. contains '?')
mainScript = dataMain;
//Set final baseUrl if there is not already an explicit one,
//but only do so if the data-main value is not a loader plugin
//module ID.
if (!cfg.baseUrl && mainScript.indexOf('!') === -1) {
//Pull off the directory of data-main for use as the
//baseUrl.
src = mainScript.split('/');
mainScript = src.pop();
subPath = src.length ? src.join('/') + '/' : './';
cfg.baseUrl = subPath;
}
//Strip off any trailing .js since mainScript is now
//like a module name.
mainScript = mainScript.replace(jsSuffixRegExp, '');
//If mainScript is still a path, fall back to dataMain
if (req.jsExtRegExp.test(mainScript)) {
mainScript = dataMain;
}
//Put the data-main script in the files to load.
cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript];
return true;
}
});
}
/**
* The function that handles definitions of modules. Differs from
* require() in that a string for the module should be the first argument,
* and the function to execute after dependencies are loaded should
* return a value to define the module corresponding to the first argument's
* name.
*/
define = function (name, deps, callback) {
var node, context;
//Allow for anonymous modules
if (typeof name !== 'string') {
//Adjust args appropriately
callback = deps;
deps = name;
name = null;
}
//This module may not have dependencies
if (!isArray(deps)) {
callback = deps;
deps = null;
}
//If no name, and callback is a function, then figure out if it a
//CommonJS thing with dependencies.
if (!deps && isFunction(callback)) {
deps = [];
//Remove comments from the callback string,
//look for require calls, and pull them into the dependencies,
//but only if there are function args.
if (callback.length) {
callback
.toString()
.replace(commentRegExp, commentReplace)
.replace(cjsRequireRegExp, function (match, dep) {
deps.push(dep);
});
//May be a CommonJS thing even without require calls, but still
//could use exports, and module. Avoid doing exports and module
//work though if it just needs require.
//REQUIRES the function to expect the CommonJS variables in the
//order listed below.
deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps);
}
}
//If in IE 6-8 and hit an anonymous define() call, do the interactive
//work.
if (useInteractive) {
node = currentlyAddingScript || getInteractiveScript();
if (node) {
if (!name) {
name = node.getAttribute('data-requiremodule');
}
context = contexts[node.getAttribute('data-requirecontext')];
}
}
//Always save off evaluating the def call until the script onl oad handler.
//This allows multiple modules to be in a file without prematurely
//tracing dependencies, and allows for anonymous module support,
//where the module name is not known until the script onl oad event
//occurs. If no context, use the global queue, and get it processed
//in the onscript load callback.
if (context) {
context.defQueue.push([name, deps, callback]);
context.defQueueMap[name] = true;
} else {
globalDefQueue.push([name, deps, callback]);
}
};
define.amd = {
jQuery: true
};
/**
* Executes the text. Normally just uses eval, but can be modified
* to use a better, environment-specific call. Only used for transpiling
* loader plugins, not for plain JS modules.
* @param {String} text the text to execute/evaluate.
*/
req.exec = function (text) {
/*jslint evil: true */
return eval(text);
};
//Set up with config info.
req(cfg);
}(this, (typeof setTimeout === 'undefined' ? undefined : setTimeout)));
三、sea.js源码（非压缩版）
1、AMD是提前执行，AMD中require的所有模块都会先加载完成，
2、CMD是延迟执行，CMD中require的模块再需要的时候再去执行
/**
* Sea.js @VERSION | seajs.org/LICENSE.md
*/
(function (global, undefined) {
// Avoid conflicting when `sea.js` is loaded multiple times
if (global.seajs) {
return
}
var seajs = global.seajs = {
// The current version of Sea.js being used
version: "@VERSION"
}
var data = seajs.data = {}
/**
* config.js - The configuration for the loader
*/
// The root path to use for id2uri parsing
data.base = loaderDir
// The loader directory
data.dir = loaderDir
// The current working directory
data.cwd = cwd
// The charset for requesting files
data.charset = "utf-8"
// data.alias - An object containing shorthands of module id
// data.paths - An object containing path shorthands in module id
// data.vars - The {xxx} variables in module id
// data.map - An array containing rules to map module uri
// data.debug - Debug mode. The default value is false
seajs.config = function (configData) {
for (var key in configData) {
var curr = configData[key]
var prev = data[key]
// Merge object config such as alias, vars
if (prev && isObject(prev)) {
for (var k in curr) {
prev[k] = curr[k]
}
}
else {
// Concat array config such as map
if (isArray(prev)) {
curr = prev.concat(curr)
}
// Make sure that `data.base` is an absolute path
else if (key === "base") {
// Make sure end with "/"
if (curr.slice(-1) !== "/") {
curr += "/"
}
curr = addBase(curr)
}
// Set config
data[key] = curr
}
}
emit("config", configData)
return seajs
}
/**
* module.js - The core of module loader
*/
var cachedMods = seajs.cache = {}
var anonymousMeta
var fetchingList = {}
var fetchedList = {}
var callbackList = {}
var STATUS = Module.STATUS = {
// 1 - The `module.uri` is being fetched
FETCHING: 1,
// 2 - The meta data has been saved to cachedMods
SAVED: 2,
// 3 - The `module.dependencies` are being loaded
LOADING: 3,
// 4 - The module are ready to execute
LOADED: 4,
// 5 - The module is being executed
EXECUTING: 5,
// 6 - The `module.exports` is available
EXECUTED: 6
}
function Module(uri, deps) {
this.uri = uri
this.dependencies = deps || []
this.exports = null
this.status = 0
// Who depends on me
this._waitings = {}
// The number of unloaded dependencies
this._remain = 0
}
// Resolve module.dependencies
Module.prototype.resolve = function () {
var mod = this
var ids = mod.dependencies
var uris = []
for (var i = 0, len = ids.length; i < len; i++) {
uris[i] = Module.resolve(ids[i], mod.uri)
}
return uris
}
// Load module.dependencies and fire onl oad when all done
Module.prototype.load = function () {
var mod = this
// If the module is being loaded, just wait it onl oad call
if (mod.status >= STATUS.LOADING) {
return
}
mod.status = STATUS.LOADING
// Emit `load` event for plugins such as combo plugin
var uris = mod.resolve()
emit("load", uris)
var len = mod._remain = uris.length
var m
// Initialize modules and register waitings
for (var i = 0; i < len; i++) {
m = Module.get(uris[i])
if (m.status < STATUS.LOADED) {
// Maybe duplicate: When module has dupliate dependency, it should be it's count, not 1
m._waitings[mod.uri] = (m._waitings[mod.uri] || 0) + 1
}
else {
mod._remain--
}
}
if (mod._remain === 0) {
mod.onload()
return
}
// Begin parallel loading
var requestCache = {}
for (i = 0; i < len; i++) {
m = cachedMods[uris[i]]
if (m.status < STATUS.FETCHING) {
m.fetch(requestCache)
}
else if (m.status === STATUS.SAVED) {
m.load()
}
}
// Send all requests at last to avoid cache bug in IE6-9. Issues#808
for (var requestUri in requestCache) {
if (requestCache.hasOwnProperty(requestUri)) {
requestCache[requestUri]()
}
}
}
// Call this method when module is loaded
Module.prototype.onload = function () {
var mod = this
mod.status = STATUS.LOADED
if (mod.callback) {
mod.callback()
}
// Notify waiting modules to fire onl oad
var waitings = mod._waitings
var uri, m
for (uri in waitings) {
if (waitings.hasOwnProperty(uri)) {
m = cachedMods[uri]
m._remain -= waitings[uri]
if (m._remain === 0) {
m.onload()
}
}
}
// Reduce memory taken
delete mod._waitings
delete mod._remain
}
// Fetch a module
Module.prototype.fetch = function (requestCache) {
var mod = this
var uri = mod.uri
mod.status = STATUS.FETCHING
// Emit `fetch` event for plugins such as combo plugin
var emitData = { uri: uri }
emit("fetch", emitData)
var requestUri = emitData.requestUri || uri
// Empty uri or a non-CMD module
if (!requestUri || fetchedList[requestUri]) {
mod.load()
return
}
if (fetchingList[requestUri]) {
callbackList[requestUri].push(mod)
return
}
fetchingList[requestUri] = true
callbackList[requestUri] = [mod]
// Emit `request` event for plugins such as text plugin
emit("request", emitData = {
uri: uri,
requestUri: requestUri,
onRequest: onRequest,
charset: data.charset
})
if (!emitData.requested) {
requestCache ?
requestCache[emitData.requestUri] = sendRequest :
sendRequest()
}
function sendRequest() {
seajs.request(emitData.requestUri, emitData.onRequest, emitData.charset)
}
function onRequest() {
delete fetchingList[requestUri]
fetchedList[requestUri] = true
// Save meta data of anonymous module
if (anonymousMeta) {
Module.save(uri, anonymousMeta)
anonymousMeta = null
}
// Call callbacks
var m, mods = callbackList[requestUri]
delete callbackList[requestUri]
while ((m = mods.shift())) m.load()
}
}
// Execute a module
Module.prototype.exec = function () {
var mod = this
// When module is executed, DO NOT execute it again. When module
// is being executed, just return `module.exports` too, for avoiding
// circularly calling
if (mod.status >= STATUS.EXECUTING) {
return mod.exports
}
mod.status = STATUS.EXECUTING
// Create require
var uri = mod.uri
function require(id) {
return Module.get(require.resolve(id)).exec()
}
require.resolve = function (id) {
return Module.resolve(id, uri)
}
require.async = function (ids, callback) {
Module.use(ids, callback, uri + "_async_" + cid())
return require
}
// Exec factory
var factory = mod.factory
var exports = isFunction(factory) ?
factory(require, mod.exports = {}, mod) :
factory
if (exports === undefined) {
exports = mod.exports
}
// Reduce memory leak
delete mod.factory
mod.exports = exports
mod.status = STATUS.EXECUTED
// Emit `exec` event
emit("exec", mod)
return exports
}
// Resolve id to uri
Module.resolve = function (id, refUri) {
// Emit `resolve` event for plugins such as text plugin
var emitData = { id: id, refUri: refUri }
emit("resolve", emitData)
return emitData.uri || seajs.resolve(emitData.id, refUri)
}
// Define a module
Module.define = function (id, deps, factory) {
var argsLen = arguments.length
// define(factory)
if (argsLen === 1) {
factory = id
id = undefined
}
else if (argsLen === 2) {
factory = deps
// define(deps, factory)
if (isArray(id)) {
deps = id
id = undefined
}
// define(id, factory)
else {
deps = undefined
}
}
// Parse dependencies according to the module factory code
if (!isArray(deps) && isFunction(factory)) {
deps = parseDependencies(factory.toString())
}
var meta = {
id: id,
uri: Module.resolve(id),
deps: deps,
factory: factory
}
// Try to derive uri in IE6-9 for anonymous modules
if (!meta.uri && doc.attachEvent) {
var script = getCurrentScript()
if (script) {
meta.uri = script.src
}
// NOTE: If the id-deriving methods above is failed, then falls back
// to use onl oad event to get the uri
}
// Emit `define` event, used in nocache plugin, seajs node version etc
emit("define", meta)
meta.uri ? Module.save(meta.uri, meta) :
// Save information for "saving" work in the script onl oad event
anonymousMeta = meta
}
// Save meta data to cachedMods
Module.save = function (uri, meta) {
var mod = Module.get(uri)
// Do NOT override already saved modules
if (mod.status < STATUS.SAVED) {
mod.id = meta.id || uri
mod.dependencies = meta.deps || []
mod.factory = meta.factory
mod.status = STATUS.SAVED
emit("save", mod)
}
}
// Get an existed module or create a new one
Module.get = function (uri, deps) {
return cachedMods[uri] || (cachedMods[uri] = new Module(uri, deps))
}
// Use function is equal to load a anonymous module
Module.use = function (ids, callback, uri) {
var mod = Module.get(uri, isArray(ids) ? ids : [ids])
mod.callback = function () {
var exports = []
var uris = mod.resolve()
for (var i = 0, len = uris.length; i < len; i++) {
exports[i] = cachedMods[uris[i]].exec()
}
if (callback) {
callback.apply(global, exports)
}
delete mod.callback
}
mod.load()
}
// Public API
seajs.use = function (ids, callback) {
Module.use(ids, callback, data.cwd + "_use_" + cid())
return seajs
}
Module.define.cmd = {}
global.define = Module.define
// For Developers
seajs.Module = Module
data.fetchedList = fetchedList
data.cid = cid
seajs.require = function (id) {
var mod = Module.get(Module.resolve(id))
if (mod.status < STATUS.EXECUTING) {
mod.onload()
mod.exec()
}
return mod.exports
}
var seajs = global.seajs = {
// The current version of Sea.js being used
version: "@VERSION"
}
var data = seajs.data = {}
/**
* util-deps.js - The parser for dependencies
* ref: tests/research/parse-dependencies/test.html
*/
var REQUIRE_RE = /"(?:\\"|[^"])*"|'(?:\\'|[^'])*'|\/\*[\S\s]*?\*\/|\/(?:\\\/|[^\/\r\n])+\/(?=[^\/])|\/\/.*|\.\s*require|(?:^|[^$])\brequire\s*\(\s*(["'])(.+?)\1\s*\)/g
var SLASH_RE = /\\\\/g
function parseDependencies(code) {
var ret = []
code.replace(SLASH_RE, "")
.replace(REQUIRE_RE, function (m, m1, m2) {
if (m2) {
ret.push(m2)
}
})
return ret
}
/**
* util-events.js - The minimal events support
*/
var events = data.events = {}
// Bind event
seajs.on = function (name, callback) {
var list = events[name] || (events[name] = [])
list.push(callback)
return seajs
}
// Remove event. If `callback` is undefined, remove all callbacks for the
// event. If `event` and `callback` are both undefined, remove all callbacks
// for all events
seajs.off = function (name, callback) {
// Remove *all* events
if (!(name || callback)) {
events = data.events = {}
return seajs
}
var list = events[name]
if (list) {
if (callback) {
for (var i = list.length - 1; i >= 0; i--) {
if (list[i] === callback) {
list.splice(i, 1)
}
}
}
else {
delete events[name]
}
}
return seajs
}
// Emit event, firing all bound callbacks. Callbacks receive the same
// arguments as `emit` does, apart from the event name
var emit = seajs.emit = function (name, data) {
var list = events[name], fn
if (list) {
// Copy callback lists to prevent modification
list = list.slice()
// Execute event callbacks, use index because it's the faster.
for (var i = 0, len = list.length; i < len; i++) {
list[i](data)
}
}
return seajs
}
/**
* util-lang.js - The minimal language enhancement
*/
function isType(type) {
return function (obj) {
return {}.toString.call(obj) == "[object " + type + "]"
}
}
var isObject = isType("Object")
var isString = isType("String")
var isArray = Array.isArray || isType("Array")
var isFunction = isType("Function")
var _cid = 0
function cid() {
return _cid++
}
/**
* util-path.js - The utilities for operating path such as id, uri
*/
var DIRNAME_RE = /[^?#]*\//
var DOT_RE = /\/\.\//g
var DOUBLE_DOT_RE = /\/[^/]+\/\.\.\//
var MULTI_SLASH_RE = /([^:/])\/+\//g
// Extract the directory portion of a path
// dirname("a/b/c.js?t=123#xx/zz") ==> "a/b/"
// ref: http://jsperf.com/regex-vs-split/2
function dirname(path) {
return path.match(DIRNAME_RE)[0]
}
// Canonicalize a path
// realpath("http://test.com/a//./b/../c") ==> "http://test.com/a/c"
function realpath(path) {
// /a/b/./c/./d ==> /a/b/c/d
path = path.replace(DOT_RE, "/")
/*
@author wh1100717
a//b/c ==> a/b/c
a///b/c ==> a/b/c
DOUBLE_DOT_RE matches a/b/c//../d path correctly only if replace // with / first
*/
path = path.replace(MULTI_SLASH_RE, "$1/")
// a/b/c/../../d ==> a/b/../d ==> a/d
while (path.match(DOUBLE_DOT_RE)) {
path = path.replace(DOUBLE_DOT_RE, "/")
}
return path
}
// Normalize an id
// normalize("path/to/a") ==> "path/to/a.js"
// NOTICE: substring is faster than negative slice and RegExp
function normalize(path) {
var last = path.length - 1
var lastC = path.charAt(last)
// If the uri ends with `#`, just return it without '#'
if (lastC === "#") {
return path.substring(0, last)
}
return (path.substring(last - 2) === ".js" ||
path.indexOf("?") > 0 ||
lastC === "/") ? path : path + ".js"
}
var PATHS_RE = /^([^/:]+)(\/.+)$/
var VARS_RE = /{([^{]+)}/g
function parseAlias(id) {
var alias = data.alias
return alias && isString(alias[id]) ? alias[id] : id
}
function parsePaths(id) {
var paths = data.paths
var m
if (paths && (m = id.match(PATHS_RE)) && isString(paths[m[1]])) {
id = paths[m[1]] + m[2]
}
return id
}
function parseVars(id) {
var vars = data.vars
if (vars && id.indexOf("{") > -1) {
id = id.replace(VARS_RE, function (m, key) {
return isString(vars[key]) ? vars[key] : m
})
}
return id
}
function parseMap(uri) {
var map = data.map
var ret = uri
if (map) {
for (var i = 0, len = map.length; i < len; i++) {
var rule = map[i]
ret = isFunction(rule) ?
(rule(uri) || uri) :
uri.replace(rule[0], rule[1])
// Only apply the first matched rule
if (ret !== uri) break
}
}
return ret
}
var ABSOLUTE_RE = /^\/\/.|:\//
var ROOT_DIR_RE = /^.*?\/\/.*?\//
function addBase(id, refUri) {
var ret
var first = id.charAt(0)
// Absolute
if (ABSOLUTE_RE.test(id)) {
ret = id
}
// Relative
else if (first === ".") {
ret = realpath((refUri ? dirname(refUri) : data.cwd) + id)
}
// Root
else if (first === "/") {
var m = data.cwd.match(ROOT_DIR_RE)
ret = m ? m[0] + id.substring(1) : id
}
// Top-level
else {
ret = data.base + id
}
// Add default protocol when uri begins with "//"
if (ret.indexOf("//") === 0) {
ret = location.protocol + ret
}
return ret
}
function id2Uri(id, refUri) {
if (!id) return ""
id = parseAlias(id)
id = parsePaths(id)
id = parseVars(id)
id = normalize(id)
var uri = addBase(id, refUri)
uri = parseMap(uri)
return uri
}
var doc = document
var cwd = (!location.href || location.href.indexOf('about:') === 0) ? '' : dirname(location.href)
var scripts = doc.scripts
// Recommend to add `seajsnode` id for the `sea.js` script element
var loaderScript = doc.getElementById("seajsnode") ||
scripts[scripts.length - 1]
// When `sea.js` is inline, set loaderDir to current working directory
var loaderDir = dirname(getScriptAbsoluteSrc(loaderScript) || cwd)
function getScriptAbsoluteSrc(node) {
return node.hasAttribute ? // non-IE6/7
node.src :
// see http://msdn.microsoft.com/en-us/library/ms536429(VS.85).aspx
node.getAttribute("src", 4)
}
// For Developers
seajs.resolve = id2Uri
/**
* util-request.js - The utilities for requesting script and style files
* ref: tests/research/load-js-css/test.html
*/
var head = doc.head || doc.getElementsByTagName("head")[0] || doc.documentElement
var baseElement = head.getElementsByTagName("base")[0]
var IS_CSS_RE = /\.css(?:\?|$)/i
var currentlyAddingScript
var interactiveScript
// `onload` event is not supported in WebKit < 535.23 and Firefox < 9.0
// ref:
// - https://bugs.webkit.org/show_activity.cgi?id=38995
// - https://bugzilla.mozilla.org/show_bug.cgi?id=185236
// - https://developer.mozilla.org/en/HTML/Element/link#Stylesheet_load_events
var isOldWebKit = +navigator.userAgent
.replace(/.*(?:AppleWebKit|AndroidWebKit)\/(\d+).*/, "$1") < 536
function request(url, callback, charset) {
var isCSS = IS_CSS_RE.test(url)
var node = doc.createElement(isCSS ? "link" : "script")
if (charset) {
var cs = isFunction(charset) ? charset(url) : charset
if (cs) {
node.charset = cs
}
}
addOnload(node, callback, isCSS, url)
if (isCSS) {
node.rel = "stylesheet"
node.href = url
}
else {
node.async = true
node.src = url
}
// For some cache cases in IE 6-8, the script executes IMMEDIATELY after
// the end of the insert execution, so use `currentlyAddingScript` to
// hold current node, for deriving url in `define` call
currentlyAddingScript = node
// ref: #185 & http://dev.jquery.com/ticket/2709
baseElement ?
head.insertBefore(node, baseElement) :
head.appendChild(node)
currentlyAddingScript = null
}
function addOnload(node, callback, isCSS, url) {
var supportOnload = "onload" in node
// for Old WebKit and Old Firefox
if (isCSS && (isOldWebKit || !supportOnload)) {
setTimeout(function () {
pollCss(node, callback)
}, 1) // Begin after node insertion
return
}
if (supportOnload) {
node.onload = onl oad
node.onerror = function () {
emit("error", { uri: url, node: node })
onl oad()
}
}
else {
node.onreadystatechange = function () {
if (/loaded|complete/.test(node.readyState)) {
onl oad()
}
}
}
function onl oad() {
// Ensure only run once and handle memory leak in IE
node.onload = node.onerror = node.onreadystatechange = null
// Remove the script to reduce memory leak
if (!isCSS && !data.debug) {
head.removeChild(node)
}
// Dereference the node
node = null
callback()
}
}
function pollCss(node, callback) {
var sheet = node.sheet
var isLoaded
// for WebKit < 536
if (isOldWebKit) {
if (sheet) {
isLoaded = true
}
}
// for Firefox < 9.0
else if (sheet) {
try {
if (sheet.cssRules) {
isLoaded = true
}
} catch (ex) {
// The value of `ex.name` is changed from "NS_ERROR_DOM_SECURITY_ERR"
// to "SecurityError" since Firefox 13.0. But Firefox is less than 9.0
// in here, So it is ok to just rely on "NS_ERROR_DOM_SECURITY_ERR"
if (ex.name === "NS_ERROR_DOM_SECURITY_ERR") {
isLoaded = true
}
}
}
setTimeout(function () {
if (isLoaded) {
// Place callback here to give time for style rendering
callback()
}
else {
pollCss(node, callback)
}
}, 20)
}
function getCurrentScript() {
if (currentlyAddingScript) {
return currentlyAddingScript
}
// For IE6-9 browsers, the script onl oad event may not fire right
// after the script is evaluated. Kris Zyp found that it
// could query the script nodes and the one that is in "interactive"
// mode indicates the current script
// ref: http://goo.gl/JHfFW
if (interactiveScript && interactiveScript.readyState === "interactive") {
return interactiveScript
}
var scripts = head.getElementsByTagName("script")
for (var i = scripts.length - 1; i >= 0; i--) {
var script = scripts[i]
if (script.readyState === "interactive") {
interactiveScript = script
return interactiveScript
}
}
}
// For Developers
seajs.request = request
/**
* util-request.js - The utilities for requesting script and style files
* ref: tests/research/load-js-css/test.html
*/
var head = doc.head || doc.getElementsByTagName("head")[0] || doc.documentElement
var baseElement = head.getElementsByTagName("base")[0]
var currentlyAddingScript
var interactiveScript
function request(url, callback, charset) {
var node = doc.createElement("script")
if (charset) {
var cs = isFunction(charset) ? charset(url) : charset
if (cs) {
node.charset = cs
}
}
addOnload(node, callback, url)
node.async = true
node.src = url
// For some cache cases in IE 6-8, the script executes IMMEDIATELY after
// the end of the insert execution, so use `currentlyAddingScript` to
// hold current node, for deriving url in `define` call
currentlyAddingScript = node
// ref: #185 & http://dev.jquery.com/ticket/2709
baseElement ?
head.insertBefore(node, baseElement) :
head.appendChild(node)
currentlyAddingScript = null
}
function addOnload(node, callback, url) {
var supportOnload = "onload" in node
if (supportOnload) {
node.onload = onl oad
node.onerror = function () {
emit("error", { uri: url, node: node })
onl oad()
}
}
else {
node.onreadystatechange = function () {
if (/loaded|complete/.test(node.readyState)) {
onl oad()
}
}
}
function onl oad() {
// Ensure only run once and handle memory leak in IE
node.onload = node.onerror = node.onreadystatechange = null
// Remove the script to reduce memory leak
if (!data.debug) {
head.removeChild(node)
}
// Dereference the node
node = null
callback()
}
}
function getCurrentScript() {
if (currentlyAddingScript) {
return currentlyAddingScript
}
// For IE6-9 browsers, the script onl oad event may not fire right
// after the script is evaluated. Kris Zyp found that it
// could query the script nodes and the one that is in "interactive"
// mode indicates the current script
// ref: http://goo.gl/JHfFW
if (interactiveScript && interactiveScript.readyState === "interactive") {
return interactiveScript
}
var scripts = head.getElementsByTagName("script")
for (var i = scripts.length - 1; i >= 0; i--) {
var script = scripts[i]
if (script.readyState === "interactive") {
interactiveScript = script
return interactiveScript
}
}
}
// For Developers
seajs.request = request
})(this);
//1、无注释版
module.exports =
(function (modules) {
var installedModules = {};
function __webpack_require__(moduleId) {
if (installedModules[moduleId]) {
return installedModules[moduleId].exports;
}
var module = installedModules[moduleId] = {
i: moduleId,
l: false,
exports: {}
};
modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
module.l = true;
return module.exports;
}
__webpack_require__.m = modules;
__webpack_require__.c = installedModules;
__webpack_require__.d = function (exports, name, getter) {
if (!__webpack_require__.o(exports, name)) {
Object.defineProperty(exports, name, { enumerable: true, get: getter });
}
};
__webpack_require__.r = function (exports) {
if (typeof Symbol !== 'undefined' && Symbol.toStringTag) {
Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
}
Object.defineProperty(exports, '__esModule', { value: true });
};
__webpack_require__.t = function (value, mode) {
if (mode & 1) value = __webpack_require__(value);
if (mode & 8) return value;
if ((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
var ns = Object.create(null);
__webpack_require__.r(ns);
Object.defineProperty(ns, 'default', { enumerable: true, value: value });
if (mode & 2 && typeof value != 'string') for (var key in value) __webpack_require__.d(ns, key, function (key) { return value[key]; }.bind(null, key));
return ns;
};
__webpack_require__.n = function (module) {
var getter = module && module.__esModule ?
function getDefault() { return module['default']; } :
function getModuleExports() { return module; };
__webpack_require__.d(getter, 'a', getter);
return getter;
};
__webpack_require__.o = function (object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
__webpack_require__.p = "/dist/";
return __webpack_require__(__webpack_require__.s = 124);
})({
0: (function (module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.d(__webpack_exports__, "a", function () { return normalizeComponent; });
function normalizeComponent(
scriptExports,
render,
staticRenderFns,
functionalTemplate,
injectStyles,
scopeId,
moduleIdentifier,
shadowMode
) {
var options = typeof scriptExports === 'function'
? scriptExports.options
: scriptExports
if (render) {
options.render = render
options.staticRenderFns = staticRenderFns
options._compiled = true
}
if (functionalTemplate) {
options.functional = true
}
if (scopeId) {
options._scopeId = 'data-v-' + scopeId
}
var hook
if (moduleIdentifier) {
hook = function (context) {
context =
context || (this.$vnode && this.$vnode.ssrContext) || (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext)
if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {
context = __VUE_SSR_CONTEXT__
}
if (injectStyles) {
injectStyles.call(this, context)
}
if (context && context._registeredComponents) {
context._registeredComponents.add(moduleIdentifier)
}
}
options._ssrRegister = hook
} else if (injectStyles) {
hook = shadowMode
? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }
: injectStyles
}
if (hook) {
if (options.functional) {
options._injectStyles = hook
var originalRender = options.render
options.render = function renderWithStyleInjection(h, context) {
hook.call(context)
return originalRender(h, context)
}
} else {
var existing = options.beforeCreate
options.beforeCreate = existing
? [].concat(existing, hook)
: [hook]
}
}
return {
exports: scriptExports,
options: options
}
}
}),
124: (function (module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
var tagvue_type_script_lang_js_ = ({
name: 'ElTag',
props: {
text: String,
closable: Boolean,
type: String,
hit: Boolean,
disableTransitions: Boolean,
color: String,
size: String,
effect: {
type: String,
default: 'light',
validator: function validator(val) {
return ['dark', 'light', 'plain'].indexOf(val) !== -1;
}
}
},
methods: {
handleClose: function handleClose(event) {
event.stopPropagation();
this.$emit('close', event);
},
handleClick: function handleClick(event) {
this.$emit('click', event);
}
},
computed: {
tagSize: function tagSize() {
return this.size || (this.$ELEMENT || {}).size;
}
},
render: function render(h) {
var type = this.type,
tagSize = this.tagSize,
hit = this.hit,
effect = this.effect;
var classes = ['el-tag', type ? 'el-tag--' + type : '', tagSize ? 'el-tag--' + tagSize : '', effect ? 'el-tag--' + effect : '', hit && 'is-hit'];
var tagEl = h(
'span',
{
'class': classes,
style: { backgroundColor: this.color },
on: {
'click': this.handleClick
}
},
[this.$slots.default, this.closable && h('i', {
'class': 'el-tag__close el-icon-close', on: {
'click': this.handleClose
}
})]
);
return this.disableTransitions ? tagEl : h(
'transition',
{
attrs: { name: 'el-zoom-in-center' }
},
[tagEl]
);
}
});
var src_tagvue_type_script_lang_js_ = (tagvue_type_script_lang_js_);
var componentNormalizer = __webpack_require__(0);
var render, staticRenderFns
var component = Object(componentNormalizer["a"])(
src_tagvue_type_script_lang_js_,
render,
staticRenderFns,
false,
null,
null,
null
)
if (false) { var api; }
component.options.__file = "packages/tag/src/tag.vue"
var tag = (component.exports);
tag.install = function (Vue) {
Vue.component(tag.name, tag);
};
var packages_tag = __webpack_exports__["default"] = (tag);
})
});
//2、有注释版
module.exports =
(function(modules) { // webpackBootstrap
// The module cache
var installedModules = {};
// The require function
function __webpack_require__(moduleId) {
// Check if module is in cache
if(installedModules[moduleId]) {
return installedModules[moduleId].exports;
}
// Create a new module (and put it into the cache)
var module = installedModules[moduleId] = {
i: moduleId,
l: false,
exports: {}
};
// Execute the module function
modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
// Flag the module as loaded
module.l = true;
// Return the exports of the module
return module.exports;
}
// expose the modules object (__webpack_modules__)
__webpack_require__.m = modules;
// expose the module cache
__webpack_require__.c = installedModules;
// define getter function for harmony exports
__webpack_require__.d = function(exports, name, getter) {
if(!__webpack_require__.o(exports, name)) {
Object.defineProperty(exports, name, { enumerable: true, get: getter });
}
};
// define __esModule on exports
__webpack_require__.r = function(exports) {
if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
}
Object.defineProperty(exports, '__esModule', { value: true });
};
// create a fake namespace object
// mode & 1: value is a module id, require it
// mode & 2: merge all properties of value into the ns
// mode & 4: return value when already ns object
// mode & 8|1: behave like require
__webpack_require__.t = function(value, mode) {
if(mode & 1) value = __webpack_require__(value);
if(mode & 8) return value;
if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
var ns = Object.create(null);
__webpack_require__.r(ns);
Object.defineProperty(ns, 'default', { enumerable: true, value: value });
if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
return ns;
};
// getDefaultExport function for compatibility with non-harmony modules
__webpack_require__.n = function(module) {
var getter = module && module.__esModule ?
function getDefault() { return module['default']; } :
function getModuleExports() { return module; };
__webpack_require__.d(getter, 'a', getter);
return getter;
};
// Object.prototype.hasOwnProperty.call
__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
// __webpack_public_path__
__webpack_require__.p = "/dist/";
// Load entry module and return exports
return __webpack_require__(__webpack_require__.s = 124);
})
/************************************************************************/
({
/***/ 0:
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return normalizeComponent; });
/* globals __VUE_SSR_CONTEXT__ */
// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).
// This module is a runtime utility for cleaner component module output and will
// be included in the final webpack user bundle.
function normalizeComponent (
scriptExports,
render,
staticRenderFns,
functionalTemplate,
injectStyles,
scopeId,
moduleIdentifier, /* server only */
shadowMode /* vue-cli only */
) {
// Vue.extend constructor export interop
var options = typeof scriptExports === 'function'
? scriptExports.options
: scriptExports
// render functions
if (render) {
options.render = render
options.staticRenderFns = staticRenderFns
options._compiled = true
}
// functional template
if (functionalTemplate) {
options.functional = true
}
// scopedId
if (scopeId) {
options._scopeId = 'data-v-' + scopeId
}
var hook
if (moduleIdentifier) { // server build
hook = function (context) {
// 2.3 injection
context =
context || // cached call
(this.$vnode && this.$vnode.ssrContext) || // stateful
(this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional
// 2.2 with runInNewContext: true
if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {
context = __VUE_SSR_CONTEXT__
}
// inject component styles
if (injectStyles) {
injectStyles.call(this, context)
}
// register component module identifier for async chunk inferrence
if (context && context._registeredComponents) {
context._registeredComponents.add(moduleIdentifier)
}
}
// used by ssr in case component is cached and beforeCreate
// never gets called
options._ssrRegister = hook
} else if (injectStyles) {
hook = shadowMode
? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }
: injectStyles
}
if (hook) {
if (options.functional) {
// for template-only hot-reload because in that case the render fn doesn't
// go through the normalizer
options._injectStyles = hook
// register for functioal component in vue file
var originalRender = options.render
options.render = function renderWithStyleInjection (h, context) {
hook.call(context)
return originalRender(h, context)
}
} else {
// inject component registration as beforeCreate hook
var existing = options.beforeCreate
options.beforeCreate = existing
? [].concat(existing, hook)
: [hook]
}
}
return {
exports: scriptExports,
options: options
}
}
/***/ }),
/***/ 124:
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
// CONCATENATED MODULE: ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib??vue-loader-options!./packages/tag/src/tag.vue?vue&type=script&lang=js&
/* harmony default export */ var tagvue_type_script_lang_js_ = ({
name: 'ElTag',
props: {
text: String,
closable: Boolean,
type: String,
hit: Boolean,
disableTransitions: Boolean,
color: String,
size: String,
effect: {
type: String,
default: 'light',
validator: function validator(val) {
return ['dark', 'light', 'plain'].indexOf(val) !== -1;
}
}
},
methods: {
handleClose: function handleClose(event) {
event.stopPropagation();
this.$emit('close', event);
},
handleClick: function handleClick(event) {
this.$emit('click', event);
}
},
computed: {
tagSize: function tagSize() {
return this.size || (this.$ELEMENT || {}).size;
}
},
render: function render(h) {
var type = this.type,
tagSize = this.tagSize,
hit = this.hit,
effect = this.effect;
var classes = ['el-tag', type ? 'el-tag--' + type : '', tagSize ? 'el-tag--' + tagSize : '', effect ? 'el-tag--' + effect : '', hit && 'is-hit'];
var tagEl = h(
'span',
{
'class': classes,
style: { backgroundColor: this.color },
on: {
'click': this.handleClick
}
},
[this.$slots.default, this.closable && h('i', { 'class': 'el-tag__close el-icon-close', on: {
'click': this.handleClose
}
})]
);
return this.disableTransitions ? tagEl : h(
'transition',
{
attrs: { name: 'el-zoom-in-center' }
},
[tagEl]
);
}
});
// CONCATENATED MODULE: ./packages/tag/src/tag.vue?vue&type=script&lang=js&
/* harmony default export */ var src_tagvue_type_script_lang_js_ = (tagvue_type_script_lang_js_);
// EXTERNAL MODULE: ./node_modules/vue-loader/lib/runtime/componentNormalizer.js
var componentNormalizer = __webpack_require__(0);
// CONCATENATED MODULE: ./packages/tag/src/tag.vue
var render, staticRenderFns
/* normalize component */
var component = Object(componentNormalizer["a" /* default */])(
src_tagvue_type_script_lang_js_,
render,
staticRenderFns,
false,
null,
null,
null
)
/* hot reload */
if (false) { var api; }
component.options.__file = "packages/tag/src/tag.vue"
/* harmony default export */ var tag = (component.exports);
// CONCATENATED MODULE: ./packages/tag/index.js
/* istanbul ignore next */
tag.install = function (Vue) {
Vue.component(tag.name, tag);
};
/* harmony default export */ var packages_tag = __webpack_exports__["default"] = (tag);
/***/ })
});
这篇关于9、common.js源码（非压缩版）、require.js源码（非压缩版） 、sea.js源码（非压缩版）、el-tag源码的文章就介绍到这儿，希望我们推荐的文章对大家有所帮助，也希望大家多多支持为之网！
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