inngest/components/realtime/subscribe/StreamFanout.cjs.map

Official SDK for Inngest.com. Inngest is the reliability layer for modern applications. Inngest combines durable execution, events, and queues into a zero-infra platform with built-in observability.

{"version":3,"file":"StreamFanout.cjs","names":["#writers"],"sources":["../../../../src/components/realtime/subscribe/StreamFanout.ts"],"sourcesContent":["export class StreamFanout<TInput = unknown> {\n  #writers = new Set<WritableStreamDefaultWriter<TInput>>();\n\n  createStream<TOutput = TInput>(\n    transform?: (chunk: TInput) => TOutput,\n  ): ReadableStream<TOutput> {\n    const { readable, writable } = new TransformStream<TInput, TOutput>({\n      transform: (chunk, controller) => {\n        controller.enqueue(\n          transform ? transform(chunk) : (chunk as unknown as TOutput),\n        );\n      },\n    });\n\n    const writer = writable.getWriter();\n    this.#writers.add(writer);\n\n    // Eagerly remove the writer if the stream is closed\n    writer.closed\n      .catch(() => {}) // Suppress unhandled promise rejection to avoid noisy logs\n      .finally(() => {\n        this.#writers.delete(writer);\n      });\n\n    return readable;\n  }\n\n  write(chunk: TInput) {\n    for (const writer of this.#writers) {\n      writer.ready\n        .then(() => writer.write(chunk))\n        // Dereference the writer if we fail, as this means it's closed\n        .catch(() => this.#writers.delete(writer));\n    }\n  }\n\n  close() {\n    for (const writer of this.#writers) {\n      try {\n        void writer.close().catch(() => {\n          // Ignore errors, as the writer may already be closed.\n        });\n      } catch {\n        // Ignore errors, as we are closing the stream and the writer may\n        // already be closed, especially if the stream is closed before the\n        // writer is closed or if the stream is cancelled.\n      }\n    }\n\n    this.#writers.clear();\n  }\n\n  size() {\n    return this.#writers.size;\n  }\n}\n"],"mappings":";;AAAA,IAAa,eAAb,MAA4C;CAC1C,2BAAW,IAAI,KAA0C;CAEzD,aACE,WACyB;EACzB,MAAM,EAAE,UAAU,aAAa,IAAI,gBAAiC,EAClE,YAAY,OAAO,eAAe;AAChC,cAAW,QACT,YAAY,UAAU,MAAM,GAAI,MACjC;KAEJ,CAAC;EAEF,MAAM,SAAS,SAAS,WAAW;AACnC,QAAKA,QAAS,IAAI,OAAO;AAGzB,SAAO,OACJ,YAAY,GAAG,CACf,cAAc;AACb,SAAKA,QAAS,OAAO,OAAO;IAC5B;AAEJ,SAAO;;CAGT,MAAM,OAAe;AACnB,OAAK,MAAM,UAAU,MAAKA,QACxB,QAAO,MACJ,WAAW,OAAO,MAAM,MAAM,CAAC,CAE/B,YAAY,MAAKA,QAAS,OAAO,OAAO,CAAC;;CAIhD,QAAQ;AACN,OAAK,MAAM,UAAU,MAAKA,QACxB,KAAI;AACF,GAAK,OAAO,OAAO,CAAC,YAAY,GAE9B;UACI;AAOV,QAAKA,QAAS,OAAO;;CAGvB,OAAO;AACL,SAAO,MAAKA,QAAS"}