Automation in TypeScript

1import { Machine } from "@fkws/klonk";
2
3// Declare your states upfront — transitions autocomplete from these
4const machine = Machine.create<{ count: number; result?: string }>()
5  .withStates("fetch", "process", "done")
6  
7  .addState("fetch", node => node
8    .setPlaylist(p => p
9      .addTask(new FetchDataTask("data"))
10      .input((state) => ({ id: state.count }))
11    )
12    .addTransition({
13      to: "process",  // ← autocomplete works here
14      condition: async () => true,
15      weight: 1
16    })
17  , { initial: true })
18  
19  .addState("process", node => node
20    .setPlaylist(p => p
21      .addTask(new TransformTask("transform"))
22      .input((state, outputs) => {
23        // outputs["data"] is typed as Result<FetchOutput> | null
24        if (!outputs.data || outputs.data.isErr()) return null;
25        return { raw: outputs.data.data };
26      })
27      .finally((state, outputs) => {
28        if (outputs.transform && outputs.transform.isOk()) {
29          state.result = outputs.transform.data.value;
30        }
31      })
32    )
33    .addTransition({ to: "done", condition: async () => true, weight: 1 })
34  )
35  
36  .addState("done", node => node)
37  .finalize({ ident: "example-machine" });
38
39// Run it
40const finalState = await machine.run({ count: 42 }, { mode: "leaf" });
41console.log(finalState.result);