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| const childMachine1 = Machine( | |
| { | |
| id: "child1", | |
| initial: "offline", | |
| context: { | |
| data: null, | |
| error: null, | |
| url: "https://api.ipify.org?format=json" | |
| }, | |
| states: { | |
| offline: { | |
| on: { | |
| RUN: { target: "loading" } | |
| } | |
| }, | |
| loading: { | |
| invoke: { | |
| src: "fetch", | |
| onDone: { | |
| target: "success", | |
| actions: ["setData", "notifyData"] | |
| }, | |
| onError: { | |
| target: "failure", | |
| actions: ["setError", "notifyError"] | |
| } | |
| } | |
| }, | |
| success: { | |
| entry: sendParent("COMPLETE", { | |
| delay: 2000 | |
| }) | |
| }, | |
| failure: { | |
| type: "final" | |
| } | |
| } | |
| }, | |
| { | |
| actions: { | |
| setData: assign({ data: (_, event) => event.data }), | |
| notifyData: () => {}, | |
| setError: assign({ error: (_, event) => event.data }), | |
| notifyError: () => {} | |
| }, | |
| services: { | |
| fetch: (context) => axios(context.url).then((response) => response.data) | |
| } | |
| } | |
| ); | |
| const childMachine2 = Machine( | |
| { | |
| id: "child2", | |
| initial: "offline", | |
| context: { | |
| data: null, | |
| error: null, | |
| url: "https://api.ipify.org?format=json" | |
| }, | |
| states: { | |
| offline: { | |
| on: { | |
| RUN: "loading" | |
| } | |
| }, | |
| loading: { | |
| invoke: { | |
| src: "fetch", | |
| onDone: { | |
| target: "success", | |
| actions: ["setData", "notifyData"] | |
| }, | |
| onError: { | |
| target: "failure", | |
| actions: ["setError", "notifyError"] | |
| } | |
| } | |
| }, | |
| success: { | |
| entry: sendParent("COMPLETE", { | |
| delay: 2000 | |
| }) | |
| }, | |
| failure: { | |
| type: "final" | |
| } | |
| } | |
| }, | |
| { | |
| actions: { | |
| setData: assign({ data: (_, event) => event.data }), | |
| notifyData: () => {}, | |
| setError: assign({ error: (_, event) => event.data }), | |
| notifyError: () => {} | |
| }, | |
| services: { | |
| fetch: (context) => axios(context.url).then((response) => response.data) | |
| } | |
| } | |
| ); | |
| const parentMachine = Machine( | |
| { | |
| id: "parent-machine", | |
| initial: "idle", | |
| context: { | |
| child1: null, | |
| child2: null | |
| }, | |
| states: { | |
| idle: { | |
| entry: assign({ | |
| child1: () => spawn(childMachine1), | |
| child2: () => spawn(childMachine2) | |
| }), | |
| on: { | |
| "running.start": { target: "child1" } | |
| } | |
| }, | |
| child1: { | |
| initial: "run", | |
| states: { | |
| run: { | |
| // entry: send({ type: "RUN" }, { to: (context) => context.child1 }), | |
| // entry: context.child1.send("RUN"), | |
| entry: (context) => context.child1.send("RUN"), | |
| on: { | |
| COMPLETE: { target: "completed" } | |
| } | |
| }, | |
| completed: { | |
| after: { | |
| 2000: { target: "#parent-machine.child2" } | |
| } | |
| } | |
| } | |
| }, | |
| child2: { | |
| initial: "run", | |
| states: { | |
| run: { | |
| entry: send({ type: "RUN" }, { to: (context) => context.child2 }), | |
| on: { | |
| COMPLETE: { target: "completed" } | |
| } | |
| }, | |
| completed: { | |
| after: { | |
| 2000: { target: "#parent-machine.completed" } | |
| } | |
| } | |
| } | |
| }, | |
| completed: { | |
| type: "final" | |
| } | |
| } | |
| } | |
| ); |
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