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/* | |
Retrying logic for https://egghead.io/lessons/xstate-use-xstate-null-events-and-transient-transitions-to-immediately-transition-states | |
*/ | |
const fetchMachine = Machine({ | |
id: 'fetch', | |
initial: 'idle', | |
context: { | |
tries: 0 | |
}, | |
states: { | |
idle: { | |
on: { TRY: 'trying' } | |
}, | |
trying: { | |
entry: ['incTries'], | |
on: { | |
'': [ | |
{ target: 'success', cond: 'triedEnough' }, | |
{ target: 'idle' } | |
] | |
} | |
}, | |
success: {} | |
} | |
}, | |
{ | |
actions: { | |
incTries: assign({ | |
tries: ctx => ctx.tries + 1 | |
}) | |
}, | |
guards: { | |
triedEnough: ctx => ctx.tries > 2 | |
} | |
}) |
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