function Promise(resolver){
if (typeof resolver !== 'function')
throw new TypeError('Promise constructor takes a function argument');
if (this instanceof Promise === false)
throw new TypeError('Failed to construct \'Promise\': Please use the \'new\' operator, this object constructor cannot be called
as a function.');
this.then_ = [];
invokeResolver(resolver, this);
}n/a
function Promise() { [native code] }n/a
function Promise(resolver){
if (typeof resolver !== 'function')
throw new TypeError('Promise constructor takes a function argument');
if (this instanceof Promise === false)
throw new TypeError('Failed to construct \'Promise\': Please use the \'new\' operator, this object constructor cannot be called
as a function.');
this.then_ = [];
invokeResolver(resolver, this);
}n/a
all = function (promises){
var Class = this;
if (!isArray(promises))
throw new TypeError('You must pass an array to Promise.all().');
return new Class(function(resolve, reject){
var results = [];
var remaining = 0;
function resolver(index){
remaining++;
return function(value){
results[index] = value;
if (!--remaining)
resolve(results);
};
}
for (var i = 0, promise; i < promises.length; i++)
{
promise = promises[i];
if (promise && typeof promise.then === 'function')
promise.then(resolver(i), reject);
else
results[i] = promise;
}
if (!remaining)
resolve(results);
});
}...
}
};
Promise.all = function(promises){
var Class = this;
if (!isArray(promises))
throw new TypeError('You must pass an array to Promise.all().');
return new Class(function(resolve, reject){
var results = [];
var remaining = 0;
function resolver(index){
remaining++;
...race = function (promises){
var Class = this;
if (!isArray(promises))
throw new TypeError('You must pass an array to Promise.race().');
return new Class(function(resolve, reject) {
for (var i = 0, promise; i < promises.length; i++)
{
promise = promises[i];
if (promise && typeof promise.then === 'function')
promise.then(resolve, reject);
else
resolve(promise);
}
});
}...
});
};
Promise.race = function(promises){
var Class = this;
if (!isArray(promises))
throw new TypeError('You must pass an array to Promise.race().');
return new Class(function(resolve, reject) {
for (var i = 0, promise; i < promises.length; i++)
{
promise = promises[i];
if (promise && typeof promise.then === 'function')
...reject = function (reason){
var Class = this;
return new Class(function(resolve, reject){
reject(reason);
});
}n/a
resolve = function (value){
var Class = this;
if (value && typeof value === 'object' && value.constructor === Class)
return value;
return new Class(function(resolve){
resolve(value);
});
}n/a
catch = function (onRejection) {
return this.then(null, onRejection);
}...
```js
var Promise = require('es6-promise-polyfill').Promise;
var promise = new Promise(...);
```
## Usage in IE<9
`catch` is a reserved word in IE<9, meaning `promise.catch(func)` throws a syntax
error. To work around this, use a string to access the property:
```js
promise['catch'](function(err) {
// ...
});
```
...function Promise(resolver){
if (typeof resolver !== 'function')
throw new TypeError('Promise constructor takes a function argument');
if (this instanceof Promise === false)
throw new TypeError('Failed to construct \'Promise\': Please use the \'new\' operator, this object constructor cannot be called
as a function.');
this.then_ = [];
invokeResolver(resolver, this);
}...
state_: PENDING,
then_: null,
data_: undefined,
then: function(onFulfillment, onRejection){
var subscriber = {
owner: this,
then: new this.constructor(NOOP),
fulfilled: onFulfillment,
rejected: onRejection
};
if (this.state_ === FULFILLED || this.state_ === REJECTED)
{
// already resolved, call callback async
...then = function (onFulfillment, onRejection){
var subscriber = {
owner: this,
then: new this.constructor(NOOP),
fulfilled: onFulfillment,
rejected: onRejection
};
if (this.state_ === FULFILLED || this.state_ === REJECTED)
{
// already resolved, call callback async
asyncCall(invokeCallback, subscriber);
}
else
{
// subscribe
this.then_.push(subscriber);
}
return subscriber.then;
}...
// ...
});
```
Or use `.then` instead:
```js
promise.then(undefined, function(err) {
// ...
});
```
## License
Licensed under the MIT License.
...