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May 30, 2021 14:36
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const fetchData = () => | |
delay( | |
Math.floor(Math.random() * 100) % 2 === 0 ? "staged" : "scheduled", | |
1000 | |
); | |
const actionableAccountMachine = Machine( | |
{ | |
id: "root", | |
initial: "idle", | |
context: { | |
status: "idle", | |
}, | |
states: { | |
idle: { | |
on: { | |
FETCH: "loading", | |
}, | |
}, | |
loading: { | |
invoke: { | |
id: "fetch actionable data", | |
src: fetchData, | |
onDone: { | |
actions: ["setActionableStatus"], | |
target: "actionable", | |
}, | |
}, | |
}, | |
actionable: { | |
on: { | |
"": [ | |
{ target: "staged", cond: "isStaged" }, | |
{ target: "scheduled", cond: "isScheduled" }, | |
], | |
}, | |
}, | |
staged: { | |
id: "staged", | |
on: { | |
SCHEDULE: { target: "scheduled" }, | |
SKIP: "skipped", | |
}, | |
}, | |
scheduled: { | |
id: "scheduled", | |
on: { | |
CANCEL: { target: "cancelled" }, | |
PROCESS: { target: "processing" }, | |
}, | |
}, | |
processing: { | |
id: "processing", | |
on: { | |
"": [{ target: "processed" }], | |
}, | |
}, | |
processed: { id: "processed", type: "final" }, | |
cancelled: { id: "cancelled", type: "final" }, | |
skipped: { id: "skipped", type: "final" }, | |
}, | |
}, | |
{ | |
guards: { | |
isStaged: (context, event) => context.status === "staged", | |
isScheduled: (context, event) => context.status === "scheduled", | |
}, | |
actions: { | |
setActionableStatus: assign({ | |
status: (_, event) => event.data, | |
}), | |
}, | |
} | |
); | |
function delay(val, delayMs) { | |
return new Promise((resolve) => { | |
setTimeout(() => resolve(val), delayMs); | |
}); | |
} |
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