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fetchMachine.ts
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fetchMachine.ts
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import { assign, fromPromise, setup } from 'xstate';
import { getGreeting } from '.';
export const fetchMachine = setup({
types: {
context: {} as {
name: string;
data: {
greeting: string;
} | null;
}
},
actors: {
fetchUser: fromPromise(({ input }: { input: { name: string } }) =>
getGreeting(input.name)
)
}
}).createMachine({
initial: 'idle',
context: {
name: 'World',
data: null
},
states: {
idle: {
on: {
FETCH: 'loading'
}
},
loading: {
invoke: {
src: 'fetchUser',
input: ({ context }) => ({ name: context.name }),
onDone: {
target: 'success',
actions: assign({
data: ({ event }) => event.output
})
},
onError: 'failure'
}
},
success: {},
failure: {
after: {
1000: 'loading'
},
on: {
RETRY: 'loading'
}
}
}
});