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as catalog from \"./catalog\";\nimport { lines } from \"./lines\";\n\nconst worker = new URL(\"./worker.ts\", import.meta.url).pathname;\n\nfunction start(id: string): void {\n\tconst log = openSync(catalog.paths(id).log, \"a\");\n\tconst child = spawn(process.execPath, [worker, id], {\n\t\tdetached: true,\n\t\tstdio: [\"ignore\", log, log],\n\t});\n\tchild.unref();\n}\n\nfunction attempt(path: string): Promise {\n\treturn new Promise((resolve, reject) => {\n\t\tconst socket = dial(path);\n\t\tsocket.once(\"connect\", () => resolve(socket));\n\t\tsocket.once(\"error\", reject);\n\t});\n}\n\n/** A connection to a channel's worker, starting the worker if the channel is dormant. */\nexport class Connection {\n\t#socket: Socket;\n\t#next = 1;\n\t#pending = new Map();\n\t#watchers = new Map void>();\n\treadonly closed: Promise;\n\n\tprivate constructor(socket: Socket) {\n\t\tthis.#socket = socket;\n\t\tlines(socket, (line) => this.#receive(JSON.parse(line)));\n\t\tthis.closed = new Promise((resolve) => socket.once(\"close\", () => resolve()));\n\t\tthis.closed.then(() => {\n\t\t\tfor (const { reject } of this.#pending.values()) {\n\t\t\t\treject(new Error(\"The channel closed the connection\"));\n\t\t\t}\n\t\t});\n\t}\n\n\tstatic async open(id: string): Promise {\n\t\tconst { socket } = catalog.paths(id);\n\t\tlet started = false;\n\t\tfor (let wait = 50; wait < 10_000; wait *= 1.5) {\n\t\t\ttry {\n\t\t\t\treturn new Connection(await attempt(socket));\n\t\t\t} catch {\n\t\t\t\tif (!started) start(id);\n\t\t\t\tstarted = true;\n\t\t\t\tawait Bun.sleep(wait);\n\t\t\t}\n\t\t}\n\t\tthrow new Error(`The channel worker did not start; see ${catalog.paths(id).log}`);\n\t}\n\n\trequest(request: Request, watch?: (event: Event) => void): Promise {\n\t\tconst id = this.#next++;\n\t\tif (watch) this.#watchers.set(id, watch);\n\t\tthis.#socket.write(`${JSON.stringify({ id, ...request })}\\n`);\n\t\treturn new Promise((resolve, reject) =>\n\t\t\tthis.#pending.set(id, { resolve: 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