import React from "react"; import { useFireproof } from "use-fireproof"; const MODES = ["ok", "throw", "hang", "race"]; const COLORS = { pending: "#b58900", running: "#268bd2", done: "#2aa198", failed: "#dc322f" }; function fmt(t) { if (!t) return "—"; const d = typeof t === "number" ? new Date(t) : new Date(t); return d.toISOString().slice(11, 23); } export default function App() { const { database, useLiveQuery } = useFireproof("jobs"); const { docs } = useLiveQuery("type", { key: "job" }); const jobs = [...docs].sort((a, b) => String(b.createdAt).localeCompare(String(a.createdAt))); const create = (mode) => database.put({ type: "job", status: "pending", input: "hello", mode, attempts: 0, createdAt: new Date().toISOString() }); return (

Job state machine

Each job is a document. The backend claims it, does the work, and a sweep picks up anything that stalls.

{MODES.map((m) => ( ))}

{["mode", "status", "attempts", "output", "created", "claimed", "done", "id"].map((h) => ( ))} {jobs.map((j) => ( ))}

{h}
{j.mode}	{j.status}	{j.attempts}	{j.output \|\| "—"}	{fmt(j.createdAt)}	{fmt(j.claimedAt)}	{fmt(j.doneAt)}	{String(j._id).slice(0, 8)}

); }