effection

MiniEffection

This is a reimplementation of Effection with some of the lessons learned from Effection incorporated and with some new ideas. In many ways it is a simplification of Effection.

Unlike Effection proper, MiniEffection embraces Promise as its core primitive. Both tasks and controllers are promises and are useable as such. The leaf-nodes of an effection tree are always promises. This makes it possible to leverage async/await for the implementation which makes the code much easier to understand and work with, rather than the explicit state machines in Effection.

This also means that all yield points function as suspend points, just like all await points function like suspend points in async/await. This makes it easier to reason about Effection code. The downside is that we can no-longer rely on synchronous yield points to prevent the event loop from ticking. To prevent race conditions, task spawning is not an operation. Instead, operation generator functions receive the task as a parameter, and spawning is just a method.

Additionally, there is at the moment, no equivalent to fork. Tasks may not outlive their parents, but they also cannot block their parent unless they are explicitly made to.

Also, the concept of resources no longer exists. To create a resource like object, it should explicitly be given a Task, it can then use this task to spawn new operations.