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| const timerMachine = Machine({ | |
| id: 'timerMachine', | |
| initial: "paused", | |
| states: { | |
| paused: { | |
| on: { | |
| START: { | |
| target: 'running' | |
| } | |
| } | |
| }, | |
| running: { | |
| initial: 'round', | |
| invoke: { | |
| src: () => (cb) => { | |
| let timerId = setInterval(() => { | |
| cb('TICK') | |
| }, 1000) | |
| return () => clearInterval(timerId) | |
| }, | |
| }, | |
| on: { | |
| TICK: { | |
| actions: assign({ | |
| secondsLeft: (ctx) => ctx.secondsLeft - 1 | |
| }) | |
| } | |
| }, | |
| states: { | |
| round: { | |
| on: { | |
| '': { | |
| target: 'interval', | |
| cond: (ctx) => ctx.secondsLeft < 0 | |
| } | |
| } | |
| }, | |
| interval: {} | |
| }, | |
| on: { | |
| PAUSED: { | |
| target: 'paused' | |
| } | |
| } | |
| } | |
| } | |
| }) |
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