this.then = function (onFulfilled, onRejected) {
var self = this
return new Promise(function (resolve, reject) {
return self.done(function (result) {
if (typeof onFulfilled === 'function') {
try {
return resolve(onFulfilled(result))
} catch (ex) {
return reject(ex)
}
} else {
return resolve(result)
}
}, function (error) {
if (typeof onRejected === 'function') {
try {
return resolve(onRejected(error))
} catch (ex) {
return reject(ex)
}
} else {
return reject(error)
}
})
})
}
