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rsvp.js
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rsvp.js
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(function(global) {
var define, requireModule, require, requirejs;
(function() {
var registry = {}, seen = {};
define = function(name, deps, callback) {
registry[name] = { deps: deps, callback: callback };
};
requirejs = require = requireModule = function(name) {
requirejs._eak_seen = registry;
if (seen[name]) { return seen[name]; }
seen[name] = {};
if (!registry[name]) {
throw new Error("Could not find module " + name);
}
var mod = registry[name],
deps = mod.deps,
callback = mod.callback,
reified = [],
exports;
for (var i=0, l=deps.length; i<l; i++) {
if (deps[i] === 'exports') {
reified.push(exports = {});
} else {
reified.push(requireModule(resolve(deps[i])));
}
}
var value = callback.apply(this, reified);
return seen[name] = exports || value;
function resolve(child) {
if (child.charAt(0) !== '.') { return child; }
var parts = child.split("/");
var parentBase = name.split("/").slice(0, -1);
for (var i=0, l=parts.length; i<l; i++) {
var part = parts[i];
if (part === '..') { parentBase.pop(); }
else if (part === '.') { continue; }
else { parentBase.push(part); }
}
return parentBase.join("/");
}
};
})();
define("rsvp/all",
["./promise","exports"],
function(__dependency1__, __exports__) {
"use strict";
var Promise = __dependency1__["default"];
__exports__["default"] = function all(array, label) {
return Promise.all(array, label);
};
});
define("rsvp/all_settled",
["./promise","./utils","exports"],
function(__dependency1__, __dependency2__, __exports__) {
"use strict";
var Promise = __dependency1__["default"];
var isArray = __dependency2__.isArray;
var isNonThenable = __dependency2__.isNonThenable;
/**
`RSVP.allSettled` is similar to `RSVP.all`, but instead of implementing
a fail-fast method, it waits until all the promises have returned and
shows you all the results. This is useful if you want to handle multiple
promises' failure states together as a set.
Returns a promise that is fulfilled when all the given promises have been
settled. The return promise is fulfilled with an array of the states of
the promises passed into the `promises` array argument.
Each state object will either indicate fulfillment or rejection, and
provide the corresponding value or reason. The states will take one of
the following formats:
```javascript
{ state: 'fulfilled', value: value }
or
{ state: 'rejected', reason: reason }
```
Example:
```javascript
var promise1 = RSVP.Promise.resolve(1);
var promise2 = RSVP.Promise.reject(new Error('2'));
var promise3 = RSVP.Promise.reject(new Error('3'));
var promises = [ promise1, promise2, promise3 ];
RSVP.allSettled(promises).then(function(array){
// array == [
// { state: 'fulfilled', value: 1 },
// { state: 'rejected', reason: Error },
// { state: 'rejected', reason: Error }
// ]
// Note that for the second item, reason.message will be "2", and for the
// third item, reason.message will be "3".
}, function(error) {
// Not run. (This block would only be called if allSettled had failed,
// for instance if passed an incorrect argument type.)
});
```
@method @allSettled
@for RSVP
@param {Array} promises;
@param {String} label - optional string that describes the promise.
Useful for tooling.
@return {Promise} promise that is fulfilled with an array of the settled
states of the constituent promises.
*/
__exports__["default"] = function allSettled(entries, label) {
return new Promise(function(resolve, reject) {
if (!isArray(entries)) {
throw new TypeError('You must pass an array to allSettled.');
}
var remaining = entries.length;
var entry;
if (remaining === 0) {
resolve([]);
return;
}
var results = new Array(remaining);
function fulfilledResolver(index) {
return function(value) {
resolveAll(index, fulfilled(value));
};
}
function rejectedResolver(index) {
return function(reason) {
resolveAll(index, rejected(reason));
};
}
function resolveAll(index, value) {
results[index] = value;
if (--remaining === 0) {
resolve(results);
}
}
for (var index = 0; index < entries.length; index++) {
entry = entries[index];
if (isNonThenable(entry)) {
resolveAll(index, fulfilled(entry));
} else {
Promise.cast(entry).then(fulfilledResolver(index), rejectedResolver(index));
}
}
}, label);
};
function fulfilled(value) {
return { state: 'fulfilled', value: value };
}
function rejected(reason) {
return { state: 'rejected', reason: reason };
}
});
define("rsvp/asap",
["exports"],
function(__exports__) {
"use strict";
__exports__["default"] = function asap(callback, arg) {
var length = queue.push([callback, arg]);
if (length === 1) {
// If length is 1, that means that we need to schedule an async flush.
// If additional callbacks are queued before the queue is flushed, they
// will be processed by this flush that we are scheduling.
scheduleFlush();
}
};
var browserGlobal = (typeof window !== 'undefined') ? window : {};
var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
// node
function useNextTick() {
return function() {
process.nextTick(flush);
};
}
function useMutationObserver() {
var iterations = 0;
var observer = new BrowserMutationObserver(flush);
var node = document.createTextNode('');
observer.observe(node, { characterData: true });
return function() {
node.data = (iterations = ++iterations % 2);
};
}
function useSetTimeout() {
return function() {
setTimeout(flush, 1);
};
}
var queue = [];
function flush() {
for (var i = 0; i < queue.length; i++) {
var tuple = queue[i];
var callback = tuple[0], arg = tuple[1];
callback(arg);
}
queue = [];
}
var scheduleFlush;
// Decide what async method to use to triggering processing of queued callbacks:
if (typeof process !== 'undefined' && {}.toString.call(process) === '[object process]') {
scheduleFlush = useNextTick();
} else if (BrowserMutationObserver) {
scheduleFlush = useMutationObserver();
} else {
scheduleFlush = useSetTimeout();
}
});
define("rsvp/config",
["./events","exports"],
function(__dependency1__, __exports__) {
"use strict";
var EventTarget = __dependency1__["default"];
var config = {
instrument: false
};
EventTarget.mixin(config);
function configure(name, value) {
if (name === 'onerror') {
// handle for legacy users that expect the actual
// error to be passed to their function added via
// `RSVP.configure('onerror', someFunctionHere);`
config.on('error', value);
return;
}
if (arguments.length === 2) {
config[name] = value;
} else {
return config[name];
}
}
__exports__.config = config;
__exports__.configure = configure;
});
define("rsvp/defer",
["./promise","exports"],
function(__dependency1__, __exports__) {
"use strict";
var Promise = __dependency1__["default"];
/**
`RSVP.defer` returns an object similar to jQuery's `$.Deferred` objects.
`RSVP.defer` should be used when porting over code reliant on `$.Deferred`'s
interface. New code should use the `RSVP.Promise` constructor instead.
The object returned from `RSVP.defer` is a plain object with three properties:
* promise - an `RSVP.Promise`.
* reject - a function that causes the `promise` property on this object to
become rejected
* resolve - a function that causes the `promise` property on this object to
become fulfilled.
Example:
```javascript
var deferred = RSVP.defer();
deferred.resolve("Success!");
defered.promise.then(function(value){
// value here is "Success!"
});
```
@method defer
@for RSVP
@param {String} label optional string for labeling the promise.
Useful for tooling.
@return {Object}
*/
__exports__["default"] = function defer(label) {
var deferred = { };
deferred.promise = new Promise(function(resolve, reject) {
deferred.resolve = resolve;
deferred.reject = reject;
}, label);
return deferred;
};
});
define("rsvp/events",
["exports"],
function(__exports__) {
"use strict";
var indexOf = function(callbacks, callback) {
for (var i=0, l=callbacks.length; i<l; i++) {
if (callbacks[i] === callback) { return i; }
}
return -1;
};
var callbacksFor = function(object) {
var callbacks = object._promiseCallbacks;
if (!callbacks) {
callbacks = object._promiseCallbacks = {};
}
return callbacks;
};
/**
//@module RSVP
//@class EventTarget
*/
__exports__["default"] = {
/**
`RSVP.EventTarget.mixin` extends an object with EventTarget methods. For
Example:
```javascript
var object = {};
RSVP.EventTarget.mixin(object);
object.on("finished", function(event) {
// handle event
});
object.trigger("finished", { detail: value });
```
`EventTarget.mixin` also works with prototypes:
```javascript
var Person = function() {};
RSVP.EventTarget.mixin(Person.prototype);
var yehuda = new Person();
var tom = new Person();
yehuda.on("poke", function(event) {
console.log("Yehuda says OW");
});
tom.on("poke", function(event) {
console.log("Tom says OW");
});
yehuda.trigger("poke");
tom.trigger("poke");
```
@method mixin
@param {Object} object object to extend with EventTarget methods
@private
*/
mixin: function(object) {
object.on = this.on;
object.off = this.off;
object.trigger = this.trigger;
object._promiseCallbacks = undefined;
return object;
},
/**
Registers a callback to be executed when `eventName` is triggered
```javascript
object.on('event', function(eventInfo){
// handle the event
});
object.trigger('event');
```
@method on
@param {String} eventName name of the event to listen for
@param {Function} callback function to be called when the event is triggered.
@private
*/
on: function(eventName, callback) {
var allCallbacks = callbacksFor(this), callbacks;
callbacks = allCallbacks[eventName];
if (!callbacks) {
callbacks = allCallbacks[eventName] = [];
}
if (indexOf(callbacks, callback) === -1) {
callbacks.push(callback);
}
},
/**
You can use `off` to stop firing a particular callback for an event:
```javascript
function doStuff() { // do stuff! }
object.on('stuff', doStuff);
object.trigger('stuff'); // doStuff will be called
// Unregister ONLY the doStuff callback
object.off('stuff', doStuff);
object.trigger('stuff'); // doStuff will NOT be called
```
If you don't pass a `callback` argument to `off`, ALL callbacks for the
event will not be executed when the event fires. For example:
```javascript
var callback1 = function(){};
var callback2 = function(){};
object.on('stuff', callback1);
object.on('stuff', callback2);
object.trigger('stuff'); // callback1 and callback2 will be executed.
object.off('stuff');
object.trigger('stuff'); // callback1 and callback2 will not be executed!
```
@method off
@param {String} eventName event to stop listening to
@param {Function} callback optional argument. If given, only the function
given will be removed from the event's callback queue. If no `callback`
argument is given, all callbacks will be removed from the event's callback
queue.
@private
*/
off: function(eventName, callback) {
var allCallbacks = callbacksFor(this), callbacks, index;
if (!callback) {
allCallbacks[eventName] = [];
return;
}
callbacks = allCallbacks[eventName];
index = indexOf(callbacks, callback);
if (index !== -1) { callbacks.splice(index, 1); }
},
/**
Use `trigger` to fire custom events. For example:
```javascript
object.on('foo', function(){
console.log('foo event happened!');
});
object.trigger('foo');
// 'foo event happened!' logged to the console
```
You can also pass a value as a second argument to `trigger` that will be
passed as an argument to all event listeners for the event:
```javascript
object.on('foo', function(value){
console.log(value.name);
});
object.trigger('foo', { name: 'bar' });
// 'bar' logged to the console
```
@method trigger
@param {String} eventName name of the event to be triggered
@param {Any} options optional value to be passed to any event handlers for
the given `eventName`
@private
*/
trigger: function(eventName, options) {
var allCallbacks = callbacksFor(this),
callbacks, callbackTuple, callback, binding;
if (callbacks = allCallbacks[eventName]) {
// Don't cache the callbacks.length since it may grow
for (var i=0; i<callbacks.length; i++) {
callback = callbacks[i];
callback(options);
}
}
}
};
});
define("rsvp/filter",
["./all","./map","./utils","exports"],
function(__dependency1__, __dependency2__, __dependency3__, __exports__) {
"use strict";
var all = __dependency1__["default"];
var map = __dependency2__["default"];
var isFunction = __dependency3__.isFunction;
var isArray = __dependency3__.isArray;
/**
`RSVP.filter` is similar to JavaScript's native `filter` method, except that it
waits for all promises to become fulfilled before running the `filterFn` on
each item in given to `promises`. `RSVP.filterFn` returns a promise that will
become fulfilled with the result of running `filterFn` on the values the
promises become fulfilled with.
For example:
```javascript
var promise1 = RSVP.resolve(1);
var promise2 = RSVP.resolve(2);
var promise3 = RSVP.resolve(3);
var filterFn = function(item){
return item > 1;
};
RSVP.filter(promises, filterFn).then(function(result){
// result is [ 2, 3 ]
});
```
If any of the `promises` given to `RSVP.filter` are rejected, the first promise
that is rejected will be given as an argument to the returned promises's
rejection handler. For example:
```javascript
var promise1 = RSVP.resolve(1);
var promise2 = RSVP.reject(new Error("2"));
var promise3 = RSVP.reject(new Error("3"));
var promises = [ promise1, promise2, promise3 ];
var filterFn = function(item){
return item > 1;
};
RSVP.filter(promises, filterFn).then(function(array){
// Code here never runs because there are rejected promises!
}, function(reason) {
// reason.message === "2"
});
```
`RSVP.filter` will also wait for any promises returned from `filterFn`.
For instance, you may want to fetch a list of users then return a subset
of those users based on some asynchronous operation:
```javascript
var alice = { name: 'alice' };
var bob = { name: 'bob' };
var users = [ alice, bob ];
var promises = users.map(function(user){
return RSVP.resolve(user);
});
var filterFn = function(user){
// Here, Alice has permissions to create a blog post, but Bob does not.
return getPrivilegesForUser(user).then(function(privs){
return privs.can_create_blog_post === true;
});
};
RSVP.filter(promises, filterFn).then(function(users){
// true, because the server told us only Alice can create a blog post.
users.length === 1;
// false, because Alice is the only user present in `users`
users[0] === bob;
});
```
@method filter
@for RSVP
@param {Array} promises
@param {Function} filterFn - function to be called on each resolved value to
filter the final results.
@param {String} label optional string describing the promise. Useful for
tooling.
@return {Promise}
*/
function filter(promises, filterFn, label) {
if (!isArray(promises)) {
throw new TypeError('You must pass an array to filter.');
}
if (!isFunction(filterFn)){
throw new TypeError("You must pass a function to filter's second argument.");
}
return all(promises, label).then(function(values){
return map(promises, filterFn, label).then(function(filterResults){
var i,
valuesLen = values.length,
filtered = [];
for (i = 0; i < valuesLen; i++){
if(filterResults[i]) filtered.push(values[i]);
}
return filtered;
});
});
}
__exports__["default"] = filter;
});
define("rsvp/hash",
["./promise","./utils","exports"],
function(__dependency1__, __dependency2__, __exports__) {
"use strict";
var Promise = __dependency1__["default"];
var isNonThenable = __dependency2__.isNonThenable;
var keysOf = __dependency2__.keysOf;
/**
`RSVP.hash` is similar to `RSVP.all`, but takes an object instead of an array
for its `promises` argument.
Returns a promise that is fulfilled when all the given promises have been
fulfilled, or rejected if any of them become rejected. The returned promise
is fulfilled with a hash that has the same key names as the `promises` object
argument. If any of the values in the object are not promises, they will
simply be copied over to the fulfilled object.
Example:
```javascript
var promises = {
myPromise: RSVP.resolve(1),
yourPromise: RSVP.resolve(2),
theirPromise: RSVP.resolve(3),
notAPromise: 4
};
RSVP.hash(promises).then(function(hash){
// hash here is an object that looks like:
// {
// myPromise: 1,
// yourPromise: 2,
// theirPromise: 3,
// notAPromise: 4
// }
});
````
If any of the `promises` given to `RSVP.hash` are rejected, the first promise
that is rejected will be given as as the first argument, or as the reason to
the rejection handler. For example:
```javascript
var promises = {
myPromise: RSVP.resolve(1),
rejectedPromise: RSVP.reject(new Error("rejectedPromise")),
anotherRejectedPromise: RSVP.reject(new Error("anotherRejectedPromise")),
};
RSVP.hash(promises).then(function(hash){
// Code here never runs because there are rejected promises!
}, function(reason) {
// reason.message === "rejectedPromise"
});
```
An important note: `RSVP.hash` is intended for plain JavaScript objects that
are just a set of keys and values. `RSVP.hash` will NOT preserve prototype
chains.
Example:
```javascript
function MyConstructor(){
this.example = RSVP.resolve("Example");
}
MyConstructor.prototype = {
protoProperty: RSVP.resolve("Proto Property")
};
var myObject = new MyConstructor();
RSVP.hash(myObject).then(function(hash){
// protoProperty will not be present, instead you will just have an
// object that looks like:
// {
// example: "Example"
// }
//
// hash.hasOwnProperty('protoProperty'); // false
// 'undefined' === typeof hash.protoProperty
});
```
@method hash
@for RSVP
@param {Object} promises
@param {String} label - optional string that describes the promise.
Useful for tooling.
@return {Promise} promise that is fulfilled when all properties of `promises`
have been fulfilled, or rejected if any of them become rejected.
*/
__exports__["default"] = function hash(object, label) {
return new Promise(function(resolve, reject){
var results = {};
var keys = keysOf(object);
var remaining = keys.length;
var entry, property;
if (remaining === 0) {
resolve(results);
return;
}
function fulfilledTo(property) {
return function(value) {
results[property] = value;
if (--remaining === 0) {
resolve(results);
}
};
}
function onRejection(reason) {
remaining = 0;
reject(reason);
}
for (var i = 0; i < keys.length; i++) {
property = keys[i];
entry = object[property];
if (isNonThenable(entry)) {
results[property] = entry;
if (--remaining === 0) {
resolve(results);
}
} else {
Promise.cast(entry).then(fulfilledTo(property), onRejection);
}
}
});
};
});
define("rsvp/instrument",
["./config","./utils","exports"],
function(__dependency1__, __dependency2__, __exports__) {
"use strict";
var config = __dependency1__.config;
var now = __dependency2__.now;
__exports__["default"] = function instrument(eventName, promise, child) {
// instrumentation should not disrupt normal usage.
try {
config.trigger(eventName, {
guid: promise._guidKey + promise._id,
eventName: eventName,
detail: promise._detail,
childGuid: child && promise._guidKey + child._id,
label: promise._label,
timeStamp: now(),
stack: new Error(promise._label).stack
});
} catch(error) {
setTimeout(function(){
throw error;
}, 0);
}
};
});
define("rsvp/map",
["./promise","./all","./utils","exports"],
function(__dependency1__, __dependency2__, __dependency3__, __exports__) {
"use strict";
var Promise = __dependency1__["default"];
var all = __dependency2__["default"];
var isArray = __dependency3__.isArray;
var isFunction = __dependency3__.isFunction;
/**
`RSVP.map` is similar to JavaScript's native `map` method, except that it
waits for all promises to become fulfilled before running the `mapFn` on
each item in given to `promises`. `RSVP.map` returns a promise that will
become fulfilled with the result of running `mapFn` on the values the promises
become fulfilled with.
For example:
```javascript
var promise1 = RSVP.resolve(1);
var promise2 = RSVP.resolve(2);
var promise3 = RSVP.resolve(3);
var promises = [ promise1, promise2, promise3 ];
var mapFn = function(item){
return item + 1;
};
RSVP.map(promises, mapFn).then(function(result){
// result is [ 2, 3, 4 ]
});
```
If any of the `promises` given to `RSVP.map` are rejected, the first promise
that is rejected will be given as an argument to the returned promises's
rejection handler. For example:
```javascript
var promise1 = RSVP.resolve(1);
var promise2 = RSVP.reject(new Error("2"));
var promise3 = RSVP.reject(new Error("3"));
var promises = [ promise1, promise2, promise3 ];
var mapFn = function(item){
return item + 1;
};
RSVP.map(promises, mapFn).then(function(array){
// Code here never runs because there are rejected promises!
}, function(reason) {
// reason.message === "2"
});
```
`RSVP.map` will also wait if a promise is returned from `mapFn`. For example,
say you want to get all comments from a set of blog posts, but you need
the blog posts first becuase they contain a url to those comments.
```javscript
var mapFn = function(blogPost){
// getComments does some ajax and returns an RSVP.Promise that is fulfilled
// with some comments data
return getComments(blogPost.comments_url);
};
// getBlogPosts does some ajax and returns an RSVP.Promise that is fulfilled
// with some blog post data
RSVP.map(getBlogPosts(), mapFn).then(function(comments){
// comments is the result of asking the server for the comments
// of all blog posts returned from getBlogPosts()
});
```
@method map
@for RSVP
@param {Array} promises
@param {Function} mapFn function to be called on each fulfilled promise.
@param {String} label optional string for labeling the promise.
Useful for tooling.
@return {Promise} promise that is fulfilled with the result of calling
`mapFn` on each fulfilled promise or value when they become fulfilled.
The promise will be rejected if any of the given `promises` become rejected.
*/
__exports__["default"] = function map(promises, mapFn, label) {
if (!isArray(promises)) {
throw new TypeError('You must pass an array to map.');
}
if (!isFunction(mapFn)){
throw new TypeError("You must pass a function to map's second argument.");
}
return all(promises, label).then(function(results){
var resultLen = results.length,
mappedResults = [],
i;
for (i = 0; i < resultLen; i++){
mappedResults.push(mapFn(results[i]));
}
return all(mappedResults, label);
});
};
});
define("rsvp/node",
["./promise","exports"],
function(__dependency1__, __exports__) {
"use strict";
var Promise = __dependency1__["default"];
var slice = Array.prototype.slice;
function makeNodeCallbackFor(resolve, reject) {
return function (error, value) {
if (error) {
reject(error);
} else if (arguments.length > 2) {
resolve(slice.call(arguments, 1));
} else {
resolve(value);
}
};
}
/**
`RSVP.denodeify` takes a "node-style" function and returns a function that
will return an `RSVP.Promise`. You can use `denodeify` in Node.js or the
browser when you'd prefer to use promises over using callbacks. For example,
`denodeify` transforms the following:
```javascript
var fs = require('fs');
fs.readFile('myfile.txt', function(err, data){
if (err) return handleError(err);
handleData(data);
});
```
into:
```javascript
var fs = require('fs');
var readFile = RSVP.denodeify(fs.readFile);
readFile('myfile.txt').then(handleData, handleError);
```
Using `denodeify` makes it easier to compose asynchronous operations instead
of using callbacks. For example, instead of:
```javascript
var fs = require('fs');
var log = require('some-async-logger');
fs.readFile('myfile.txt', function(err, data){
if (err) return handleError(err);
fs.writeFile('myfile2.txt', data, function(err){
if (err) throw err;
log('success', function(err) {
if (err) throw err;
});
});
});
```
You can chain the operations together using `then` from the returned promise:
```javascript
var fs = require('fs');
var denodeify = RSVP.denodeify;
var readFile = denodeify(fs.readFile);
var writeFile = denodeify(fs.writeFile);
var log = denodeify(require('some-async-logger'));
readFile('myfile.txt').then(function(data){
return writeFile('myfile2.txt', data);
}).then(function(){
return log('SUCCESS');
}).then(function(){
// success handler
}, function(reason){
// rejection handler
});
```
@method denodeify
@for RSVP
@param {Function} nodeFunc a "node-style" function that takes a callback as
its last argument. The callback expects an error to be passed as its first