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Core Library

MSAL.js (@azure/msal-browser)

Wrapper Library

MSAL Node Extensions (@azure/msal-node-extensions)

Public or Confidential Client?

Confidential

Documentation Location

Jsnyhyuwm

Description

$ git clone git@github.com:username/microsoft-authentication-library-for-js.git
$ cd microsoft-authentication-library-for-js
$ git remote add upstream git@github.com:AzureAD/microsoft-authentication-library-for-js.git

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$ git clone git@github.com:username/microsoft-authentication-library-for-js.git
$ cd microsoft-authentication-library-for-js
$ git remote add upstream git@github.com:AzureAD/microsoft-authentication-library-for-js.git

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The collection interface must declare a factory method for
// producing iterators. You can declare several methods if there
// are different kinds of iteration available in your program.
interface SocialNetwork is
method createFriendsIterator(profileId):ProfileIterator
method createCoworkersIterator(profileId):ProfileIterator

// Each concrete collection is coupled to a set of concrete
// iterator classes it returns. But the client isn't, since the
// signature of these methods returns iterator interfaces.
class Facebook implements SocialNetwork is
// ... The bulk of the collection's code should go here ...

// Iterator creation code.
method createFriendsIterator(profileId) is
    return new FacebookIterator(this, profileId, "friends")
method createCoworkersIterator(profileId) is
    return new FacebookIterator(this, profileId, "coworkers")

// The common interface for all iterators.
interface ProfileIterator is
method getNext():Profile
method hasMore():bool

// The concrete iterator class.
class FacebookIterator implements ProfileIterator is
// The iterator needs a reference to the collection that it
// traverses.
private field facebook: Facebook
private field profileId, type: string

// An iterator object traverses the collection independently
// from other iterators. Therefore it has to store the
// iteration state.
private field currentPosition
private field cache: array of Profile

constructor FacebookIterator(facebook, profileId, type) is
    this.facebook = facebook
    this.profileId = profileId
    this.type = type

private method lazyInit() is
    if (cache == null)
        cache = facebook.socialGraphRequest(profileId, type)

// Each concrete iterator class has its own implementation
// of the common iterator interface.
method getNext() is
    if (hasMore())
        result = cache[currentPosition]
        currentPosition++
        return result

method hasMore() is
    lazyInit()
    return currentPosition < cache.length

// Here is another useful trick: you can pass an iterator to a
// client class instead of giving it access to a whole
// collection. This way, you don't expose the collection to the
// client.
//
// And there's another benefit: you can change the way the
// client works with the collection at runtime by passing it a
// different iterator. This is possible because the client code
// isn't coupled to concrete iterator classes.
class SocialSpammer is
method send(iterator: ProfileIterator, message: string) is
while (iterator.hasMore())
profile = iterator.getNext()
System.sendEmail(profile.getEmail(), message)

// The application class configures collections and iterators
// and then passes them to the client code.
class Application is
field network: SocialNetwork
field spammer: SocialSpammer

method config() is
    if working with Facebook
        this.network = new Facebook()
    if working with LinkedIn
        this.network = new LinkedIn()
    this.spammer = new SocialSpammer()

method sendSpamToFriends(profile) is
    iterator = network.createFriendsIterator(profile.getId())
    spammer.send(iterator, "Very important message")

method sendSpamToCoworkers(profile) is
    iterator = network.createCoworkersIterator(profile.getId())
    spammer.send(iterator, "Very important message")