@tanstack/ai/dist/esm/activities/stream-generation-result.js

Type-safe TypeScript AI SDK for streaming chat, tool calling, agents, structured outputs, and multimodal generation.

import { EventType } from "@ag-ui/core";
import { toRunErrorPayload } from "./error-payload.js";
function createId(prefix) {
  return `${prefix}-${Date.now()}-${Math.random().toString(36).slice(2, 9)}`;
}
async function* streamGenerationResult(generator, options) {
  const runId = createId("run");
  const threadId = createId("thread");
  yield {
    type: EventType.RUN_STARTED,
    runId,
    threadId,
    timestamp: Date.now()
  };
  try {
    const result = await generator();
    yield {
      type: EventType.CUSTOM,
      name: "generation:result",
      value: result,
      timestamp: Date.now()
    };
    yield {
      type: EventType.RUN_FINISHED,
      runId,
      threadId,
      finishReason: "stop",
      timestamp: Date.now()
    };
  } catch (error) {
    const payload = toRunErrorPayload(error, "Generation failed");
    const codeFields = payload.code !== void 0 ? { code: payload.code } : void 0;
    yield {
      type: EventType.RUN_ERROR,
      message: payload.message,
      ...codeFields,
      // Deprecated nested form for backward compatibility
      error: {
        message: payload.message,
        ...codeFields
      },
      timestamp: Date.now()
    };
  }
}
export {
  streamGenerationResult
};
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