Support for transactions

[grzegorzj]

Apologies in advance if I got something wrong, but as far as I can see, it's impossible to use PassportLocalModel's methods within a transaction. For example, PassportLocalModel's register() method doesn't take arguments/doesn't return an object that would take a session object.

Code example:

const session = await mongoose.startSession();
session.startTransaction();
const user: Document<User> = await UserModel.register({ email, active: false } as User & Document, password); // making this go into the session isn't possible as of now

How I think it should work

const session = await mongoose.startSession();
session.startTransaction();
const user: Document<User> = await UserModel.register({ email, active: false } as User & Document, password).session(session);

[hensansi]

As an alternative solution, even if the register function doesn't support transactions you can pass a user document created with a session. If something fails, it will be rolled back.

  const session = await mongoose.startSession();
  session.startTransaction();
  const [user] = await this.create([userData], { session });
  if (password) {
    await this.register(user, password);
  }
  await session.commitTransaction();
  session.endSession();