async.generator.js

@globalPrivate
function next() {
}

@globalPrivate
function return() {
}

@globalPrivate
function throw() {
}

@globalPrivate
function createAsyncFromSyncIterator(syncIterator)
{
    if (!@isObject(syncIterator)) new @TypeError('Only objects can be wrapped by async-from-sync wrapper');
 
    return new @AsyncFromSyncIteratorConstructor(syncIterator)
}

@globalPrivate
@constructor
function AsyncFromSyncIteratorConstructor(syncIterator) {
    this.@syncIterator = syncIterator;
 
    this.next = @next;
    this.return = @return;
    this.throw = @throw;
}