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https://github.com/mogsie/xstate-plantuml

Visualization of xstate statecharts using plantuml
https://github.com/mogsie/xstate-plantuml

Last synced: 4 months ago
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Visualization of xstate statecharts using plantuml

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Visualization for xstate using plantuml
=======================================

Given an xstate definition of a statechart, this tool will
output a plantuml source rendering of the statechart.

Installation:

(global install)

npm -g install

Usage:

xstate-plantuml

or (if not installed globally)

npm run main

The code will "require" the first argument, expecting it to be a full
machine definition, and will print out a plantuml source code that
corresponds to the statechart.

Example invocation:

xstate-plantuml ./on-off

will load the ./on-off.json file and print out the PlantUML diagram source code

For example, given the following statechart:

```json
{
"initial": "Off",
"states": {
"Off": {
"on": {
"FLICK": "On"
},
"initial": "A",
"states": {
"A": {
"on": {
"FLICK": "A",
"UNBLOCK": "B"
},
"onEntry": {
"type": "startUnblockTimer",
"delay": 2000
},
"onExit": {
"type": "cancelUnblockTimer"
}
},
"B": {}
}
},
"On": {
"on": {
"FLICK": "Off"
},
"initial": "C",
"states": {
"C": {
"on": {
"UNBLOCK": "D"
},
"onEntry": {
"type": "startUnblockTimer",
"delay": 500
},
"onExit": {
"type": "cancelUnblockTimer"
}
},
"D": {
"onEntry": {
"type": "turnOn"
},
"onExit": {
"type": "turnOff"
},
"initial": "E",
"states": {
"E": {
"on": {
"UNBLOCK": "F"
},
"onEntry": {
"type": "startUnblockTimer",
"delay": 500
},
"onExit": {
"type": "cancelUnblockTimer"
},
"initial": "G",
"states": {
"G": {
"on": {
"FLICK": "G"
}
}
}
},
"F": {}
}
}
}
}
}
}
```

```plantuml
left to right direction
@startuml
[*] --> Off
state Off {
[*] --> A
Off --> On: FLICK
state A {
A --> A: FLICK
A --> B: UNBLOCK
A: onentry / startUnblockTimer
A: onexit / cancelUnblockTimer
}
state B {
}
}
state On {
[*] --> C
On --> Off: FLICK
state C {
C --> D: UNBLOCK
C: onentry / startUnblockTimer
C: onexit / cancelUnblockTimer
}
state D {
[*] --> E
D: onentry / turnOn
D: onexit / turnOff
state E {
[*] --> G
E --> F: UNBLOCK
E: onentry / startUnblockTimer
E: onexit / cancelUnblockTimer
state G {
G --> G: FLICK
}
}
state F {
}
}
}
@enduml
```

This results in the following diagram, after running it through PlantUML:

OffAonentry / startUnblockTimeronexit / cancelUnblockTimerBFLICKUNBLOCKOnConentry / startUnblockTimeronexit / cancelUnblockTimerDonentry / turnOnonexit / turnOffEonentry / startUnblockTimeronexit / cancelUnblockTimerGFLICKFUNBLOCKUNBLOCKFLICKFLICK

(Thanks to PlantText for the rendering services!)