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Awesome list for Finite State Machine
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# Awesome FSM [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)



[](https://en.wikipedia.org/wiki/Finite-state_machine)



> Useful resources for creating apps that use the [finite state machine](https://en.wikipedia.org/wiki/Finite-state_machine) pattern



*Inspired by the [awesome](https://github.com/sindresorhus/awesome) list thing.*



## Préambule 🌭



Finite state machine won't save the world. This pattern address issues where you want to drive a user from a point A to Z following various state. Thus make sure you really need a state machine before using one. But also make sure you won't need one, because most of the time **you will**.

We have **four rules** that leads this design:



1. The state machine is defined by a finite number of states

2. This states are triggered by conditions

3. Each conditions shapes **transition**

4. The machine is in **only one state at a time**; we call it the current state



## Interesting reading about state machine 📖



- [FSM and event driven programming](http://www.robert-drummond.com/2015/04/21/event-driven-programming-finite-state-machines-and-nodejs/)



> FSM can be simply compared to somebody with amnesia who is constantly asking:

> Where am I?

> What just happened?

> and…

>

> So what do I do (or where do I go) next?



*Robert Drummond*



- [State design pattern](http://www.dofactory.com/javascript/state-design-pattern)



> Two other examples where the State pattern is useful include: vending machines that dispense products when a correct combination of coins is entered, and elevator logic which moves riders up or down depending on certain complex rules that attempt to minimize wait and ride times.



*dofactory*



- [Hacker news thread](https://news.ycombinator.com/item?id=2949543)



> This man has never heard of video game A.I. programming :)



*davedx*



- [gameprogrammingpatterns.com](http://gameprogrammingpatterns.com/state.html)



> There’s nothing to prevent “air jumping” — keep hammering B while she’s in the air, and she will float forever. The simple fix is to add an isJumping_ Boolean field to Heroine that tracks



*Robert Nystrom*



- [Why developers never use state machines](http://www.skorks.com/2011/09/why-developers-never-use-state-machines/)



> We Don't Need One Until We Do

> So, early on you don't feel like your objects' state machine behaviour is complex enough to warrant a **"full-blown"** state machine (YAGNI and all that jazz), but later on – **when it IS complex enough** – you feel like you've invested too much time/effort to replace it with something that has equivalent functionality



*Alan Skorkin*



- [About React and State Machine](https://facebook.github.io/react/docs/interactivity-and-dynamic-uis.html)



> React thinks of UIs as simple state machines.



## Libraries 📚



- State.js: https://github.com/steelbreeze/state.js [](https://www.npmjs.com/package/state.js)

- Machina.js: https://github.com/ifandelse/machina.js [](https://www.npmjs.com/package/machina)

- Javascript State Machine: https://github.com/jakesgordon/javascript-state-machine [](https://www.npmjs.com/package/javascript-state-machine)

- Promise State Machine: https://github.com/patbenatar/promise-state-machine [](https://www.npmjs.com/package/promise-state-machine)

- Chine: https://github.com/mtabini/chine [](https://www.npmjs.com/package/chine)

- Machineto: https://github.com/itkoren/machineto [](https://www.npmjs.com/package/machineto)

- Makina: https://github.com/atabel/makina [](https://www.npmjs.com/package/makina)

- StateJS: https://github.com/hufyhang/state-js [](https://www.npmjs.com/package/state-js)

- Mistic: https://github.com/benaston/mistic [](https://www.npmjs.com/package/mistic)

- fluent-state-machine: https://github.com/nickuraltsev/fluent-state-machine [](https://www.npmjs.com/package/fluent-state-machine)

- Bon Etat: https://github.com/gausby/bon-etat [](https://www.npmjs.com/package/bon-etat)

- Hierarchical-fsm: https://github.com/cassiozen/State-Machine [](https://www.npmjs.com/package/hierarchical-fsm)

- iFsm - jQuery: https://github.com/intersel/iFSM [](https://www.npmjs.com/package/ifsm)

- State flow: https://github.com/philipdev/stateflow [](https://www.npmjs.com/package/stateflow)



## Examples



TODO 🛠