feat: dynamic-workflow 来了 (#1271)

* feat(workflow): add workflow engine, /workflows panel, /ultracode skill

将 feat/sdk-backend 分支中 workflow 相关的 20 个 commit 压缩为单 commit:

- 工作流引擎核心:phase / agent / parallel / pipeline 编排原语(packages/workflow-engine/)
- /workflows 面板:三区焦点布局(顶部 run tabs + 左侧 phase 侧栏 + 右侧 agent 列表)
- /ultracode skill:多 agent workflow 编排入口
- 进度存储 / journal / notification 系统
- WorkflowService 生命周期管理 + SentryErrorBoundary
- 脚本沙箱:禁用 dynamic import()、JSON args 防御性归一化
- journal 与 named-workflow 路径统一在 projectRoot
- 错误处理:parallel/pipeline hooks 错误日志、failure routing、semaphore abort
- workflow 工具升级为 core 工具 + PascalCase 命名

Co-Authored-By: glm-5.1 <zai-org@claude-code-best.win>

* feat(workflow): 复刻 ultracode 手册并修复 worktree/inline/opt-in 三处缺口

围绕 ultracode skill 审查 agent 系统一致性后:
- ultracode.ts: 用系统提示版完整 Workflow 编排手册替换中文精简版
- HIGH#1 isolation:'worktree': claudeCodeBackend.run() 用 createAgentWorktree +
  runWithCwdOverride 包裹 runAgent + finally 清理实现真正的 cwd 隔离;slug 用
  sha256(runId:agentId) 派生以匹配 cleanupStaleAgentWorktrees 清理正则
  (修 runId 为 w+base36 非 UUID 导致的泄漏盲区);worktree.ts 注释同步修正
- HIGH#2 inline 持久化: 新增 persistInlineScript,WorkflowTool + service 两条
  inline 路径对称持久化到 .claude/workflow-runs/<runId>/script.js,返回可复用
  scriptPath(闭环 inline→编辑→scriptPath 重提迭代循环)
- HIGH#3 opt-in 分工: ultracode/WorkflowTool/effort 注明 session reminder 由
  harness 注入,repo 内无 ultracode 信号,保持 feature('WORKFLOW_SCRIPTS') +
  isEnabled 两层 gate,不自造注入
- 测试: 新增 persistInline.test.ts;扩展 claudeCodeBackend(isolation 4 用例)/
  WorkflowTool(inline)/service(scriptPath)/ultracode(harness)

含配套 workflow engine/panel 完善与 run-state-persistence design doc。

Co-Authored-By: Claude <noreply@anthropic.com>

* feat(workflow): run 终态落盘 state.json 支持跨重启恢复

终态 RunProgress(含 returnValue/error)此前只在内存 ProgressStore,进程
重启即丢失。本次让其落盘到 .claude/workflow-runs/<runId>/state.json,使
(a) 重启后可按 runId 取 return、(b) /workflows 面板跨重启展示历史 run。
跨进程 resume 明确不在范围。

- persistence.ts: getRunsDir/writeRunState/readRunState/listPersistedRuns
  + attachRunStatePersistence;原子覆盖写(tmp+rename),读容错(缺文件/
  损坏/schemaVersion 不符 → null),写 best-effort(IO 失败只 log warn)
- progress/store.ts: 加 hydrate(run) 直接注入磁盘 run(已存在 runId 跳过,
  内存优先)
- service.ts: getWorkflowService() 接线 attachRunStatePersistence(bus,
  store) 订阅 run_done(completed/failed/killed 三态共用,shutdown-kill
  也走同路径,无需额外钩子);WorkflowService 加 getRunAsync(id) 内存
  miss→读盘 fallback(不注入内存)+ loadPersistedRuns() 扫盘 hydrate
  (persistedLoaded flag 守护幂等)
- panel/WorkflowsPanel.tsx: mount 时调一次 loadPersistedRuns(重 mount
  不重复)
- ports.ts: runsDir 改用 getRunsDir() 消除拼接重复
- 测试: persistence.test.ts(11)/runStatePersistence.test.ts(5)/
  progressStore(2)/service(5)/WorkflowsPanel(1) 共 24 个新测试;
  precheck 5629 pass / 0 fail

设计偏离: 计划原写 monkey-patch getRunsDir 指向 tmpdir,Bun ESM namespace
不可变不可行;改用可选 runsDirProvider 参数(默认 getRunsDir)DI 注入,
加到 attachRunStatePersistence 与 makeService(cwdOverride 之后第 4 参),
与现有 cwdOverride 模式一致。makeService 的 cwdOverride 保持不变,不破坏
inline 持久化特性。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(workflow): 默认并发降为 3 并支持 per-run maxConcurrency 注入

- DEFAULT_MAX_CONCURRENCY=3 替代旧的 min(16, cores-2);MAX_CONCURRENCY_CAP=16 保留为用户输入的绝对上限
- 新增 clampMaxConcurrency() 处理 undefined/<1/>CAP 边界
- WorkflowInput schema 新增 maxConcurrency: number.int().min(1).max(16).optional()
- 引擎层 context/runWorkflow 全链路透传:semaphore 容量来自 per-run 入参
- WorkflowTool prompt 增加指引:fan-out 场景先用 AskUserQuestion 与用户确认并发再启动
- 同步 ultracode skill + audit workflow spec 的并发文字(删 cpu-cores 公式)
- 同步 docs/features/workflow-scripts.md 旧公式

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(workflow): 面板 UI 字符串英文化

WorkflowsPanel 中 4 处面向用户的中文(onDone 错误消息、键位提示行)
改为英文;其他面板组件(AgentList/TabsBar)原本已是英文。代码注释
保留中文,与 workflow 模块惯例一致。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(workflow): 中断系统(x 杀单 agent / K 杀整个 workflow,Dialog 二次确认)

- claudeCodeBackend 桥接 ctx.signal → runAgent.override.abortController(修 'x' 无效根因:abort 到不了内部 fetch)
- AbortError 识别为 throw WorkflowAbortedError(不再吞成 dead,workflow 能感知被 kill)
- ports.taskRegistrar 加 registerAgentAbort/unregisterAgentAbort/killAgent;service.killAgent(runId, agentId) 精确中断
- 面板键位:'x' 杀当前 agent(agents 列聚焦时) / 'K' 杀整个 workflow;Dialog 二次确认 + confirm 模式吞导航键防误触
- 新增测试 8 项(backend signal bridge / hooks inject / ports killAgent / service killAgent)

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* docs(workflow): ultracode skill 加 model tier 选择指引(haiku/sonnet/opus/best 场景匹配)

补足 agent() 已有 model 参数缺的判断依据:列出 4 个 tier 的成本/延迟量级和典型场景,
明确"无法 articulate 为什么换 tier 就 omit"的 rule of thumb。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(workflow): maxConcurrency≠3 必须先 AskUserQuestion(默认 3 推荐值)

把 fan-out 时才问改成任何 maxConcurrency≠3 都必须问。
唯一例外:用户在当前会话已明确说过并发数("use 6" / "maxConcurrency 9")。
prompt (WorkflowTool.ts) + skill (ultracode.ts) + audit spec 三处同步。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(workflow): agent 失败自动重试一次(dead 或非 abort throw)

- hooks.agent 包装 invokeBackend:第一次 dead 或非 abort throw → 重试一次
- WorkflowAbortedError(kill)不重试——是用户意图
- registry.resolve 配置错(AdapterNotFoundError 等)在 try 外直接上抛,不走重试——
  配置问题重试无意义且掩盖 bug
- 重试仍失败:dead 保持 dead;throw 降级 dead(不击穿 workflow,
  与 parallel/pipeline null-on-error 契约一致)
- budget 不重复扣:dead 不 addOutputTokens,重试 ok 才扣一次
- 新增 7 项 hooks 层重试测试 + 1 项 service 层降级测试

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(workflow): 面板 label 截断保留 #数字 后缀(同 dim 多 finding 可区分)

audit workflow 用 verify:\${dim}#\${findingIdx} 命名 verify agent。
旧逻辑 slice(0, 18) 从右切把 #idx 全吃了——同 dimension 多 finding
肉眼无法区分。新逻辑:含 #数字 后缀时保留后缀,前缀截断 + … 省略号。

例:verify:correctness#0 → verify:correctn…#0
   verify:architecture#15 → verify:archite…#15

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(workflow): kill 整个 workflow 后立即回主 chat

run_done→store→notifications.ts 的通知路径已有,但 confirmYes 后面板继续
挂着挡住主 chat,用户看不到"已停止"反馈。kill 后调 onDone() 立即退出面板,
让主 chat 的 `Workflow "<name>" was stopped` 通知直接可见。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(workflow): agent dead 带 reason/detail + prompt 加压 StructuredOutput

12 agent audit workflow 8 个 dead,journal 只记 {kind:"dead"} 无信息,
事后无法区分 "agent 没产 StructuredOutput" vs "runAgent 抛错"。
证据指向主因:sonnet 长 tool chain 后忘记调 StructuredOutput,
extractStructuredOutput 返回 null 即降级 dead。

- types.ts: AgentRunResult.dead 加可选 reason/detail 字段
  (no-structured-output / runagent-threw / worktree-failed / unknown)
  兼容旧 journal(均 optional)。
- claudeCodeBackend.ts: 三处 dead 填 reason + detail;
  no-structured-output 把 finalized 文本前 200 字符做 detail,
  让日志/面板能立刻看到 agent 最后说了什么。
- claudeCodeBackend.ts: schema 模式 prompt 首尾各放一次
  StructuredOutput 强制要求,针对 sonnet 长 tool chain 后忘记收尾。
- hooks.ts: retry 日志带 reason;retry 仍 throw 时降级 dead 也填
  reason=runagent-threw + detail。
- types.test.ts: 加 reason JSON 往返 + 旧 journal 兼容测试。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(workflow): schema 模式弃用 StructuredOutput 工具契约,改鲁棒 JSON 文本解析

上一轮 70a2f76 把"agent 长 tool chain 后忘调 StructuredOutput"当作死因,
加 prompt 头尾双强制。但实测跑 5 个 review agent 4 个 dead,detail 全是
"StructuredOutput tool is not available as a deferred tool"——根因是
该工具从未注入 workflow sub-agent 的工具集(assembleToolPool 默认池不含,
只有 stop_hook 路径 execAgentHook.ts 显式 createStructuredOutputTool())。
prompt 反复要求调一个不可达的工具,agent 困扰、长篇辩解、最终没产 JSON。

- claudeCodeBackend.ts:
  - extractStructuredOutput 重写:括号栈扫描替代 indexOf/lastIndexOf,
    处理嵌套对象、字符串内的括号、转义符;新增 fenced code block
    优先路径(```json / ```),多 JSON 块取第一个 parse 成功的;
    只返回 plain object(拒 array/number/string/null)。不做语法修复
    (尾逗号/单引号/注释)——避免在字符串内误改(如 "http://" 被 // 注释正则吃)。
  - schema 模式 prompt 简化:删首尾双 STRUCTURED OUTPUT 强制(600+ token),
    改成指示 agent 在最后文本块 emit raw JSON;明确告知"StructuredOutput
    is not available in this environment",消除调用幻觉。
- hooks.ts: detail.slice 用 typeof === 'string' 守卫;catch 块用
  e instanceof Error ? e.message : String(e)(旧 journal / 第三方 adapter
  可能写非 string detail,直接 .slice 会抛 TypeError 击穿日志)。
- claudeCodeBackend.test.ts: +9 测试覆盖 fenced / 嵌套 / 字符串内括号 /
  转义引号 / 多块取首 / 类型守卫 / 损坏 JSON。

precheck: 5663 pass / 0 fail。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* docs(effort): 新增 /effort 交互面板设计 spec

设计要点:
- /effort 无参 → 横向 slider 面板(low/medium/high/xhigh/max/ultracode)
- ←/→ 移动光标,Enter 确认,Esc 取消
- ultracode 仅视觉占位,确认后提示走 /ultracode <context>
- env override 时双标记 + 顶部警告
- 模型不支持时面板禁用
- 两阶段交付:先基础面板 commit,再做 ultracode 波纹动画

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* docs(effort): 新增 EffortPanel 基础面板实施计划(第一阶段)

按 TDD 分 6 个 task:纯函数状态 → keybinding 注册 → 组件 → 命令挂载 → 分支测试 → precheck。
波纹动画在第二阶段单独 commit。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* docs(effort): plan 补 q/ctrl+c 取消绑定,对齐 spec §5 状态机

verifier 抓到的 gap:spec §5 写明 Esc / Ctrl+C / q 都是取消事件,
但 plan Task 2.3 只绑了 escape。补上 q 和 ctrl+c → effortPanel:cancel。
同时把 Step 2.2 直接写成 6 个 action 版本(home/end),删除迂回表达。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* docs(effort): plan 修订执行前 review 发现的 5 处 gap

- Task 3.3 EffortPanel.tsx 草稿:Faster/Smarter padEnd 语法错乱重写;
  useKeybindings import 路径从 @anthropic/ink 修正为 ../../keybindings/useKeybinding.js;
  移除冗余 renderSeparatorLine;保留 renderPaddedLine
- Task 5.2 computeConfirmOutcome 改为注入 ApplyFn 模式:
  避免 effortPanelState → effort.tsx → EffortPanel 循环依赖;
  测试可注入 mockApply,无需 mock settings
- Step 5.3 测试代码对齐注入版签名

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): 新增 EffortPanel 纯函数状态模块(PanelPosition + 移动/初始光标)

仅含纯函数与类型,无 React/Ink 依赖,便于单测。
- PANEL_POSITIONS:low → medium → high → xhigh → max → ultracode
- moveLeft/moveRight:边界钳制(low 不再左移、ultracode 不再右移)
- getInitialCursor:env override > displayed level

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(keybindings): 注册 EffortPanel context 与 6 个 action

绑定 ←/→/h/l/home/end/enter/escape/q/ctrl+c 到 effortPanel:* action。
与 ModelPicker context 范式一致,避免左右键被全局 keybinding 拦截。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): 实现 EffortPanel 组件主体(渲染 + 键盘交互 + 确认/取消分支)

- 横向 slider 布局:Faster ↔ Smarter 两极,6 档刻度
- useKeybindings 注册 EffortPanel context(←/→/h/l/home/end/enter/escape/q/ctrl+c)
- Enter 在 5 档之一 → 调 executeEffort 写 settings + AppState
- Enter 在 ultracode → 输出引导文案,不写状态
- Esc/q → "Effort unchanged."
- env override 时顶部黄色警告
- computeConfirmOutcome 注入 ApplyFn,便于测试(Task 5 补测试)

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): /effort 无参时挂载 EffortPanel 交互面板

- 无参 → <EffortPanelWrapper> 透传 AppState.effortValue
- current/status → 仍显示文本(不变)
- 有参 → 直跳 executeEffort(不变)
- help/-h/--help → 不变

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* test(effort): 补 computeConfirmOutcome 分支测试(注入 mockApply)

- ultracode → kind=ultracode-hint,不调 applyFn
- low → kind=apply,message/effortUpdate 来自 applyFn
- applyFn 返回无 effortUpdate 时 outcome.effortUpdate 为 undefined
- CANCEL_MESSAGE / ULTRACODE_HINT 常量

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(effort): 测试里 cursor cast 为 EffortValue,避免 PanelPosition 含 ultracode 触发 TS 错误

computeConfirmOutcome 的 ApplyFn 契约要求 EffortValue,但测试 mockApply 接收 PanelPosition。
实际运行时 computeConfirmOutcome 在 ultracode 档位走 hint 分支不会调 applyFn,
cast 安全。precheck 全量通过:5688 tests / 0 fail。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(effort): 面板对齐与配色修复

- 对齐:用 Box width={SEGMENT} + justifyContent="center" 让 ▲ 与档位名严格居中对齐,
  替代之前 string padEnd(11) 与 SEGMENT=12 不一致导致的 1 列偏移
- 配色:所有面板文字改用 theme.claude(Claude Orange rgb(215,119,87)),
  替代终端默认紫;分隔线/副标签/底栏用 theme.subtle;env 警告用 theme.warning
- 光标档位的档位名也加粗,强化视觉焦点

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(effort): 面板文字改紫色,ULTRACODE_HINT 英文化

- 颜色:theme.claude(橙)→ theme.purple_FOR_SUBAGENTS_ONLY(Purple 600, rgb(147,51,234)),
  覆盖标题、Faster/Smarter、▲、档位名
- ULTRACODE_HINT:中文 → 英文
  "ultracode is not an effort level. Use /ultracode <context> to start a multi-agent workflow."

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(effort): 统一用色版——选中 suggestion(蓝),未选中 subtle(灰)

弃用 purple_FOR_SUBAGENTS_ONLY(subagent 专用)。改与项目其他面板一致:
- 选中档位 + ▲:color="suggestion"(Medium blue rgb(87,105,247))+ bold
- 未选中档位 + 空 ▲ 占位:color="subtle"(Light gray rgb(175,175,175))
- 标题 / Faster / Smarter:color="suggestion"
- 分隔线 / 副标签 / 底栏:color="subtle"

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(workflow): 终态前补发 phase_done,面板自动退出 running→terminal 转换

runWorkflow:脚本结束时 hook.phase 不会触发最后一个 phase 的 phase_done,
UI 左栏会永远显示 running。三路径(completed/killed/failed)统一在 run_done
之前补发 emitTerminalPhaseDone。

WorkflowsPanel:抽 isRunTerminatedTransition 纯函数判定 running → terminal,
面板 useEffect 检测到转换后自动退出聚焦。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): 波纹动画纯函数 pickChar/computeRippleLine/mergeLayers + 18 测试

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): useRippleFrame hook 包装 useAnimationFrame,按需订阅时钟

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): EffortPanel 集成波纹背景——cursor 停在 ultracode 时切换波纹模式

仅在 cursor === 'ultracode' 时启用 useRippleFrame,渲染 5 行波纹背景
+ overlay 文字(Faster/Smarter、分隔线、▲、档位名、副标签)。
其余档位保持原 PlainContent 渲染路径不动。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* refactor(effort): 波纹动画从字符密度改为颜色渐变

按原版风格把波纹背景从 INTENSITY_CHARS 密度字符('·∙░▒▓')改为
suggestion 系颜色渐变(transparent → 暗深紫蓝 → suggestion → 高光):

rippleAnimation.ts:
- 删除 pickChar / INTENSITY_CHARS / WAVE_PEAK_CHARS / mergeLayers
- 新增 intensityToColor(intensity) → 'transparent' | '#xxxxxx'
- 新增 computeRippleCells 返回 Cell[](每位置 char+color)
- 新增 applyOverlaysToCells(cells, overlays) 替代 mergeLayers
- 新增 cellsToSegments(cells) 合并相邻同色段(减少 Text 节点)

EffortPanel.tsx:
- RippleContent 用 cells→segments→tokens 渲染
- 空格段用 BaseText backgroundColor 染色块(纯色块视觉)
- 文字段用 Text color 染色(亮色突出)
- tokens 按空格/文字二次拆分,避免混合段渲染歧义

测试: 29 个 rippleAnimation 测试覆盖 intensityToColor 边界、
computeRippleCells 长度/震源/衰减、applyOverlaysToCells 覆盖/截断/
防御式拷贝、cellsToSegments 合并逻辑。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(effort): 波纹参数调优——铺满左侧 + 速度调慢 + 全面板有底色

用户反馈三个问题:
1. "低峰部分没有颜色变化" → intensity ≤ 0.1 返回 transparent 导致波谷
   位置看不见。改为永不返回 transparent,最低档 #0a0d1a 作为面板
   底色(暗紫黑海洋),波峰在底色上流动。
2. "波浪速度太快" → time 系数 0.012 → 0.004(约 1/3 速)。波峰移动
   速度从 34 cell/s 降到 11 cell/s,每帧颜色变化从 45% 降到 36%。
3. "波浪只到中间部分,没覆盖左侧" → falloff 覆盖半径 40 → 90。
   震源 x=65,左侧 dist=65 < 90,波纹可达最左端(约 30-50% 覆盖)。

色阶调整:
- 删除 transparent 档,新增 #0a0d1a 作最暗档(底色)
- 最高档从 #8aa0ff(高光)改为 #5769F7(suggestion),避免与
  文字 overlay 同色互相吞噬
- 7 档颜色:#0a0d1a → #15182b → #1f2543 → #2a3360 →
  #3a4582 → #4a5bb0 → #5769F7

测试:删除 transparent 期望,改为期望具体颜色(#0a0d1a 等)。
新增"覆盖半径扩大"测试验证 dist=65 仍有非最暗颜色。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* fix(effort): 波纹 v3 — 去黑边 + 删中心高频涟漪 + y 轴覆盖快捷键行

用户反馈三个问题:
1. "黑色边感觉不太对" — 最暗档 #0a0d1a (rgb 10,13,26) 太接近纯黑,
   远端波谷看起来像硬黑边。改为 #1a1f3a (rgb 26,31,58),紫蓝感
   更强而非纯黑。
2. "中心的快速波纹有点奇怪" — 删除震源附近 dist<6 的高频涟漪叠加
   (time*0.02,5 倍主波纹频率)。原本想让震源附近"水波感"更强,
   实际效果像"快速闪烁"反而突兀。主波纹已经足够,无需叠加。
3. "y 方向覆盖快捷键" — RippleContent 新增 y=2 行渲染快捷键 overlay
   ("←/→ adjust · Enter confirm · Esc cancel")。PlainContent 路径
   保持原 Box marginTop=1 + Text 渲染。

色阶调整(紫蓝感更强):
- #1a1f3a (原 #0a0d1a) — 最暗档
- #1f2543 / #252c55 / #2e3870 / #3a4582 / #4a5bb0 / #5769F7
  (中间档略调亮度,保持平滑过渡)

测试:震源点测试更新为"time=0 时波谷最暗,time 推进后扫过波峰变亮",
反映删除高频涟漪后的纯主波纹行为。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* chore(workflow): 工作流相关代码中文文案全部英文化

源码(src/workflow/ + packages/workflow-engine/src/)的中文注释、
用户可见错误消息、字符串字面量;测试文件的标题与注释;同步 6 条
硬编码断言到英文化后的错误消息。

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* feat(effort): 波纹 v4 — 平滑波 + 全色环旋转 + 淡入淡出 + 宽度自适应

- 波函数改 (sin+1)/2:消除 max(0,sin) 平直暗带(约 6 行宽)
- 主色相连续旋转(0.03°/ms,12s/圈全色环):蓝→紫→品红→红→橙→黄→绿→青
- 文字 overlay 同步色相旋转(rotateHue 应用到 Faster/▲/档位名/分隔线/副标签)
- 淡入淡出动画:fadeColor/fadeCells + fade 状态机 ~300ms 进出过渡
- 副标签固定 ultracode 段下方,不跟随光标移动
- 顶部/底部各加一行纯波纹行,视觉一致
- 宽度自适应终端列数:窄则 72,宽则铺满(computeSegment/computeRippleSourceX)
- 快捷键改 plain Text,不参与波纹背景渲染
- 新增 18 测试(fadeColor/fadeCells/rotateHue/getHueShiftAtTime)

Co-Authored-By: glm-5.2 <zai-org@claude-code-best.win>

* refactor: remove CYBER_RISK_MITIGATION_REMINDER from FileReadTool

Co-Authored-By: deepseek-v4-pro <deepseek-ai@claude-code-best.win>

* fix: prevent ReDoS in extractMeta regex by anchoring to splice boundary

Co-Authored-By: deepseek-v4-pro <deepseek-ai@claude-code-best.win>

* chore: 更新脚本

---------

Co-authored-by: glm-5.1 <zai-org@claude-code-best.win>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: deepseek-v4-pro <deepseek-ai@claude-code-best.win>
This commit is contained in:
claude-code-best
2026-06-14 18:13:49 +08:00
committed by GitHub
parent 3e3e1de81b
commit 58ee6419b1
130 changed files with 23347 additions and 885 deletions

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/**
* registry 多后端路由演示mock adapter无需 API key
*
* 两个 adapterstrong被 researcher 路由命中)+ fast默认
* 脚本里 agent({agentType:'researcher'}) → strong其余 → fast。
* 证明 agent 后端可通过 AgentAdapterRegistry 插拔 + 路由,引擎不关心实现。
*
* 用法bun run packages/workflow-engine/examples/registry-demo.ts
*/
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import {
AgentAdapterRegistry,
createFileJournalStore,
createHostHandle,
runWorkflow,
type AgentAdapter,
type AgentRunParams,
type AgentRunResult,
type WorkflowPorts,
} from '@claude-code-best/workflow-engine'
const strongAdapter: AgentAdapter = {
id: 'strong',
capabilities: { structuredOutput: true, tools: true },
async run(p: AgentRunParams): Promise<AgentRunResult> {
return {
kind: 'ok',
output: `[strong] ← ${p.prompt}`,
usage: { outputTokens: 1 },
}
},
}
const fastAdapter: AgentAdapter = {
id: 'fast',
capabilities: { structuredOutput: false },
async run(p: AgentRunParams): Promise<AgentRunResult> {
return {
kind: 'ok',
output: `[fast] ← ${p.prompt}`,
usage: { outputTokens: 1 },
}
},
}
const registry = new AgentAdapterRegistry()
.register(strongAdapter)
.register(fastAdapter)
.route({ kind: 'agentType', agentType: 'researcher', adapter: 'strong' })
.default('fast')
const SCRIPT = `
export const meta = { name: 'registry-demo', description: 'multi-adapter routing' }
phase('Route')
const research = await agent('深度调研任务', { agentType: 'researcher', label: 'research' })
const quick = await agent('快速小任务', { label: 'quick' })
return { research, quick }
`
function makePorts(runsDir: string): WorkflowPorts {
return {
// registry 优先agentRunner 仅作形状占位(不会被调到)
agentRunner: { runAgentToResult: async () => ({ kind: 'dead' }) },
agentAdapterRegistry: registry,
progressEmitter: {
emit: e => {
if (e.type === 'phase_started') console.log(`\n━ phase: ${e.phase}`)
else if (e.type === 'agent_done') {
const out =
e.result.kind === 'ok'
? String(e.result.output)
: `[${e.result.kind}]`
console.log(`${e.label}${out}`)
}
},
},
taskRegistrar: {
register: () => ({
runId: 'demo',
signal: new AbortController().signal,
}),
complete() {},
fail() {},
kill() {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(runsDir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: process.cwd(),
budgetTotal: null,
}),
}
}
if (import.meta.main) {
await registry.initializeAll()
try {
const result = await runWorkflow({
script: SCRIPT,
runId: `demo-${Date.now()}`,
ports: makePorts(join(tmpdir(), 'wf-registry-demo')),
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: process.cwd(),
budgetTotal: null,
})
console.log(`\n■ ${result.status}`)
if (result.status === 'completed') {
const ret = result.returnValue as { research: string; quick: string }
console.log(
`research(agentType:researcher) → ${ret.research.startsWith('[strong]') ? 'strong adapter ✓' : '??'}`,
)
console.log(
`quick(默认) → ${ret.quick.startsWith('[fast]') ? 'fast adapter ✓' : '??'}`,
)
}
} finally {
await registry.disposeAll()
}
}

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# research-report —— 库优先运行示例
`@claude-code-best/workflow-engine` **直接**运行一个 workflow绕开 Workflow 工具与核心 `runAgent`
## 状态
- **引擎层**:完整且测试覆盖 **99.65% 行 / 99.20% 函数**workflow-engine 包 112 个 mock 测试全绿)。
- **本 example**:编排逻辑(`parallel` / `pipeline` / `schema` / `args`)经 mock 端到端验证;**真实 LLM 已跑通**(直连 Anthropic SDK
- **定位**:库 API 与引擎逻辑的**参考实现 + 冒烟示范**,不是生产服务——见下方「生产就绪」。
## 它演示了什么
- **库可独立使用**`run.ts``import { runWorkflow, ... } from '@claude-code-best/workflow-engine'`,自己组装 7 个端口,不依赖 `src/` 任何核心模块。
- **agent 后端直连 Anthropic SDK**`agentRunner``client.messages.create`,子 agent = 一次模型调用(不经核心 `runAgent`、不经 Workflow 工具)。
- **真实 LLM + 结构化输出**`agent(schema)` → prompt 追加 JSON 指令 → 提取 JSON → `validateAgainstSchema`Ajv校验失败回退 `dead`
- **引擎能力全覆盖**`parallel`(屏障,多角度 fan-out`pipeline`(无屏障,逐条深挖)→ `phase` / `log` / `args`
## 运行
```bash
ANTHROPIC_API_KEY=sk-... \
bun run packages/workflow-engine/examples/research-report/run.ts "Edge Computing"
```
环境变量:
- `ANTHROPIC_API_KEY`(必填)
- `ANTHROPIC_MODEL`:默认 `claude-sonnet-4-5`
- `WORKFLOW_API_CONCURRENCY`API 并发上限,默认 `3`(见下)。低 tier 可设 `1` 串行
- `RESEARCH_RUNS_DIR`journal 目录,默认 `~/.claude/workflow-runs`resume 时复用)
## 健壮性与排错
runner 内置了几项让真实 API 跑得稳的处理:
- **API 并发限制**`llmAgent` 经独立信号量限并发(默认 3**独立于引擎的 CPU 级 semaphore**——LLM API 对并发远比 CPU 敏感,按 cores可能 14放并发会触发 429。用 `WORKFLOW_API_CONCURRENCY` 调。
- **429/5xx 重试**指数退避500ms → 1s → 2s → 4s最多 4 次);连接/超时错误也重试。
- **SDK 日志关闭**`new Anthropic({ logLevel: 'off' })`options 优先级最高,压过 `ANTHROPIC_LOG` env。否则 SDK 会打 `[log_xxxxx] sending request {…}` 这种完整请求 JSON。
- **错误摘要精简**:失败只打 `HTTP 429 rate_limit_error` 这种短行,不打印含 request body 的整段 message。
- **synthesize 防 JSON**prompt 明确禁止把输入的 `deepFindings` JSON 原样粘进报告。
排错速查:
| 现象 | 原因 / 处理 |
|------|------|
| `HTTP 429 ...` 频繁 | 降 `WORKFLOW_API_CONCURRENCY=1`(或 2 |
| agent `✗ [dead]` 多 | 模型未按 schema 返回 JSON换更强模型或放宽 schema |
| `[log_xxx] sending request` 刷屏 | 不应再出现(已 `logLevel:'off'`);若仍出现检查 env 是否覆盖 |
| 报告被截断 | synthesize 已 `maxTokens:8192`;仍不够可改 workflow 脚本 |
## 文件
| 文件 | 作用 |
|------|------|
| `research-report.workflow.mjs` | workflow 脚本(编排逻辑,纯 JS引擎沙箱执行 |
| `run.ts` | runner组装端口 + 直连 SDK + 运行 + 终端进度 |
| (同级 `../smoke.ts` | 最小冒烟入口3 次调用,秒级验证通路) |
## 扩展点
- **联网调研**:给 `llmAgent``messages.create``tools: [{ type: 'web_search_20250305' }]`Anthropic server-side web searchresearch 角度即可联网。
- **命名命令复用**:把 `research-report.workflow.mjs` 复制到项目 `.claude/workflows/research-report.mjs`,即可通过 `/research-report` 或 Workflow 工具运行(同一脚本,两种入口)。
- **token 预算**`runWorkflow({ budgetTotal: 200000 })` 设上限;脚本内用 `budget.remaining()` 自适应规模。
- **resume**:同 `runId` + `resume: true` 重放 journal已完成的 agent 不重跑。
## 生产就绪(诚实)
本 example 验证的是**库的 API 与引擎编排逻辑**,不是生产服务。要上生产还差:
- **真实 LLM 压测**:长 workflow、大量并发、中断/resume 的真实场景验证mock 覆盖不到模型行为)。
- **核心 adapter 的 v1 延期项**`budgetTotal` 注入、skip/retry UI、worktree 隔离、StructuredOutput 完整接入(本 example 用 prompt+JSON 解析,比核心真实路径弱)。
- **错误恢复**journal resume 只在 mock 验证过;真实中途崩溃的重放正确性未压测。
引擎核心逻辑(并发 / 预算 / journal / schema有 99.65% 覆盖的 mock 测试兜底,可作为基础继续建。

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// research-report.workflow.mjs
// 技术研究报告 workflow。
// 由 run.ts 通过 @claude-code-best/workflow-engine 的 runWorkflow() 直接执行——
// 不经 Workflow 工具、不经核心 runAgent。脚本内的 agent / parallel / pipeline /
// phase / log / args 均为引擎运行时注入的全局(见 src/engine/script.ts 的沙箱)。
//
// 编排多角度并行调研parallel 屏障)→ 逐条深挖pipeline 无屏障)→ 综合成报告。
export const meta = {
name: 'research-report',
description:
'Multi-angle tech research → deep-read → synthesize into a Markdown report',
whenToUse: '调研一个技术主题:从多个角度并行研究、逐条深挖、综合成结构化报告',
phases: [
{ title: 'Research', detail: '多角度并行调研parallel 屏障)' },
{ title: 'DeepRead', detail: '逐条深挖pipeline 无屏障)' },
{ title: 'Synthesize', detail: '综合成 Markdown 报告' },
],
}
// agent(schema) 让子 agent 返回「校验对象」而非纯文本。
const ANGLE_SCHEMA = {
type: 'object',
required: ['angle', 'findings'],
properties: {
angle: { type: 'string', description: '本次调研的角度名' },
findings: {
type: 'array',
items: {
type: 'object',
required: ['claim', 'evidence'],
properties: {
claim: { type: 'string', description: '一句话结论' },
evidence: { type: 'string', description: '依据/来源/理由' },
},
},
},
},
}
const DEEP_SCHEMA = {
type: 'object',
required: ['claim', 'analysis', 'confidence'],
properties: {
claim: { type: 'string' },
analysis: { type: 'string', description: '机理/前提/边界/反例' },
confidence: { type: 'string', enum: ['high', 'medium', 'low'] },
},
}
// ---- 输入(由 run.ts 通过 args 透传)----
const topic = args.topic
if (typeof topic !== 'string' || topic.length === 0) {
throw new Error('research-report 需要 args.topic研究主题字符串')
}
const angles =
Array.isArray(args.angles) && args.angles.length > 0
? args.angles
: ['核心概念与原理', '主流方案与对比', '工程实践与权衡', '生态与趋势']
// ---- Phase 1多角度并行调研。parallel = 屏障,等所有角度完成后才继续。----
phase('Research')
log(`主题「${topic}」:${angles.length} 个角度并行调研中`)
const researched = await parallel(
angles.map(
a => () =>
agent(
`你是资深技术研究分析师。针对技术主题「${topic}」,从「${a}」角度调研,给出该角度下 2-4 条最关键的技术发现,每条须附依据。`,
{ label: `research:${a}`, phase: 'Research', schema: ANGLE_SCHEMA },
),
),
)
// parallel 返回 (object|null)[]skipped/dead 的角度为 null过滤后展平
const allFindings = researched
.filter(Boolean)
.flatMap(r => r.findings.map(f => ({ ...f, angle: r.angle })))
log(`收集到 ${allFindings.length} 条发现,进入深挖`)
if (allFindings.length === 0) {
return {
topic,
report: '(所有角度调研均失败,无可用发现)',
anglesCovered: 0,
findingsDeepened: 0,
}
}
// ---- Phase 2逐条深挖。pipeline = 无屏障,每条发现独立跑完所有 stage互不等待。----
phase('DeepRead')
const deepened = await pipeline(
allFindings,
f =>
agent(
`针对以下技术发现,深入分析其机理、成立前提、适用边界与可能的反例:\n结论:${f.claim}\n依据:${f.evidence}\n角度:${f.angle}`,
{ label: `deep:${f.angle}`, phase: 'DeepRead', schema: DEEP_SCHEMA },
),
// 第二个 stage按置信度标注交叉价值演示多 stage pipeline 链式传递)。
// stage-1 若 dead 返回 null这里显式守卫——避免对 null 取属性(否则被 pipeline
// 的 per-item catch 吞掉、整条静默丢失)。
d =>
d
? {
...d,
crossCutting:
d.confidence === 'high' ? '可作为报告主干' : '需谨慎引用或佐证',
}
: null,
)
const deepFindings = deepened.filter(Boolean)
log(`深挖完成 ${deepFindings.length}/${allFindings.length}`)
// ---- Phase 3综合成 Markdown 报告(无 schema → 返回纯文本)----
phase('Synthesize')
const report = await agent(
`你是首席技术分析师。基于以下经深挖的技术发现,综合一份结构化研究报告(纯 Markdown 叙述)。\n要求:含摘要、分角度分析、关键结论、落地建议与风险;用自然语言陈述每条发现并标注 confidence。\n禁止:在报告中粘贴 JSON 代码块或原样引用下方输入数据。\n\n主题:${topic}\n\n深度发现JSON仅供你理解不要原样输出\n${JSON.stringify(deepFindings)}`,
{ label: 'synthesize', phase: 'Synthesize', maxTokens: 8192 },
)
return {
topic,
report,
anglesCovered: angles.length,
findingsDeepened: deepFindings.length,
}

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/**
* research-report runner —— 直接用 @claude-code-best/workflow-engine 运行 workflow
* 完全绕开 Workflow 工具与核心 runAgent。agent() 后端直连 Anthropic SDK
* @anthropic-ai/sdk子 agent = 一次 messages.create。
*
* 用法:
* ANTHROPIC_API_KEY=sk-... \
* bun run packages/workflow-engine/examples/research-report/run.ts "Edge Computing"
*
* 可选环境变量:
* ANTHROPIC_MODEL 模型名,默认 claude-sonnet-4-5
* RESEARCH_RUNS_DIR journal 目录,默认 ~/.claude/workflow-runsresume 复用)
*/
import Anthropic from '@anthropic-ai/sdk'
import { readFile } from 'node:fs/promises'
import { homedir } from 'node:os'
import { join } from 'node:path'
import {
createFileJournalStore,
createHostHandle,
runWorkflow,
Semaphore,
validateAgainstSchema,
type AgentRunParams,
type AgentRunResult,
type ProgressEvent,
type WorkflowPorts,
} from '@claude-code-best/workflow-engine'
const SCRIPT_FILE = `${import.meta.dir}/research-report.workflow.mjs`
const DEFAULT_MODEL = process.env.ANTHROPIC_MODEL ?? 'claude-sonnet-4-5'
const MAX_TOKENS = 4096
// 终端着色(无第三方依赖)
const paint = {
dim: (s: string) => `\x1b[2m${s}\x1b[0m`,
cyan: (s: string) => `\x1b[36m${s}\x1b[0m`,
green: (s: string) => `\x1b[32m${s}\x1b[0m`,
yellow: (s: string) => `\x1b[33m${s}\x1b[0m`,
red: (s: string) => `\x1b[31m${s}\x1b[0m`,
bold: (s: string) => `\x1b[1m${s}\x1b[0m`,
}
// client 由 main() 构造llmAgent 闭包引用。null 守卫使 import 时不触发真实调用。
const clientRef: { client: Anthropic | null } = { client: null }
// API 并发上限(独立于引擎的 CPU semaphore——LLM API 对并发远比 CPU 敏感,默认 3
// 用 WORKFLOW_API_CONCURRENCY 调整。
const apiSem = new Semaphore(
Math.max(1, Number(process.env.WORKFLOW_API_CONCURRENCY) || 3),
)
/** 429/5xx/连接错误指数退避重试500ms → 1s → 2s → 4s最多 4 次。 */
async function withRetry<T>(fn: () => Promise<T>, retries = 4): Promise<T> {
for (let attempt = 0; ; attempt++) {
try {
return await fn()
} catch (e) {
if (!isRetryable(e) || attempt >= retries) throw e
const wait = Math.min(500 * 2 ** attempt, 8000)
await new Promise(r => {
setTimeout(r, wait)
})
}
}
}
function isRetryable(e: unknown): boolean {
const err = e as { status?: number; name?: string }
if (err.status === 429) return true
if (typeof err.status === 'number' && err.status >= 500) return true
if (typeof err.name === 'string' && /Connection|Timeout/i.test(err.name)) {
return true
}
return false
}
/** 精简错误摘要(避免打印整个含 request body 的 message。 */
function errSummary(e: unknown): string {
const err = e as {
status?: number
error?: { type?: string }
message?: string
}
if (err.status) return `HTTP ${err.status} ${err.error?.type ?? ''}`.trim()
return (err.message ?? 'unknown').slice(0, 120)
}
/**
* 真实 LLM agentRunner一次 messages.create经 API 并发信号量 + 重试)。
* schema 模式prompt 追加 JSON 指令 → 取文本 → 提取 JSON → Ajv 校验 → 失败返回 dead。
* 非 schema返回纯文本。
*/
async function llmAgent(params: AgentRunParams): Promise<AgentRunResult> {
const client = clientRef.client
if (client === null) return { kind: 'dead' }
const schemaInstruction = params.schema
? '\n\n你必须以一个【单独的 JSON 对象】作为整段回答(不要 Markdown 代码围栏、不要任何解释),该对象须匹配如下 JSON Schema\n' +
JSON.stringify(params.schema)
: ''
const release = await apiSem.acquire()
try {
const resp = await withRetry(() =>
client.messages.create({
model: params.model ?? DEFAULT_MODEL,
max_tokens: params.maxTokens ?? MAX_TOKENS,
messages: [
{ role: 'user', content: params.prompt + schemaInstruction },
],
}),
)
const outputTokens = resp.usage.output_tokens
const truncated = resp.stop_reason === 'max_tokens'
if (params.schema) {
// 截断的 JSON 几乎必然不完整 → 直接判 dead而非让解析模糊失败
if (truncated) return { kind: 'dead' }
const text = resp.content
.map(block => (block.type === 'text' ? block.text : ''))
.join('')
.trim()
const parsed = extractJsonObject(text)
if (parsed === null) return { kind: 'dead' }
const { valid } = validateAgainstSchema(parsed, params.schema)
if (!valid) return { kind: 'dead' }
return { kind: 'ok', output: parsed as object, usage: { outputTokens } }
}
const text = resp.content
.map(block => (block.type === 'text' ? block.text : ''))
.join('')
.trim()
if (truncated) {
console.error(
paint.yellow(` ⚠ 输出被 max_tokens 截断(${outputTokens} tokens`),
)
}
return { kind: 'ok', output: text, usage: { outputTokens } }
} catch (e) {
console.error(paint.red(`${errSummary(e)}`))
return { kind: 'dead' }
} finally {
release()
}
}
/**
* 容错 JSON 提取:去代码围栏 → 从首个 { 起做括号深度匹配(跳过字符串字面量与
* 转义,仿 src/engine/script.ts 的 extractMeta取配对的 {…} → JSON.parse。
* 比 lastIndexOf('}') 稳健:正确处理 JSON 后散文里含 }、第二个对象、字符串内 }。
*/
function extractJsonObject(text: string): unknown | null {
const stripped = text.replace(/```(?:json)?/gi, '').trim()
const start = stripped.indexOf('{')
if (start < 0) {
try {
return JSON.parse(stripped)
} catch {
return null
}
}
let depth = 0
let inStr: string | null = null
for (let i = start; i < stripped.length; i++) {
const ch = stripped[i]
if (inStr) {
if (ch === '\\') i++
else if (ch === inStr) inStr = null
continue
}
if (ch === '"' || ch === "'" || ch === '`') inStr = ch
else if (ch === '{') depth++
else if (ch === '}') {
depth--
if (depth === 0) {
try {
return JSON.parse(stripped.slice(start, i + 1))
} catch {
return null
}
}
}
}
return null
}
/** 内存版 taskRegistrar不经核心 LocalWorkflowTask仅维护 runId → AbortController。 */
function makeTaskRegistrar(): WorkflowPorts['taskRegistrar'] {
const controllers = new Map<string, AbortController>()
return {
register(opts) {
const ac = new AbortController()
const runId = opts.runId ?? `research-${controllers.size + 1}`
controllers.set(runId, ac)
return { runId, signal: ac.signal }
},
complete() {},
fail() {},
kill(runId) {
controllers.get(runId)?.abort()
},
pendingAction() {
return null
},
}
}
/** 进度事件 → 终端实时打印。 */
function printProgress(e: ProgressEvent): void {
switch (e.type) {
case 'run_started':
console.log(paint.bold(paint.cyan(`\n▶ ${e.workflowName}`)))
break
case 'phase_started':
console.log(paint.cyan(`\n━ phase: ${e.phase}`))
break
case 'phase_done':
break
case 'agent_started':
console.log(` ${paint.dim('→')} ${e.label ?? 'agent'}`)
break
case 'agent_done': {
const tag =
e.result.kind === 'ok'
? paint.green('✓')
: e.result.kind === 'skipped'
? paint.yellow('⊘')
: paint.red('✗')
console.log(
` ${tag} ${e.label ?? 'agent'} ${paint.dim(`[${e.result.kind}]`)}`,
)
break
}
case 'log':
console.log(` ${paint.dim('·')} ${e.message}`)
break
case 'run_done':
console.log(paint.bold(`\n■ ${e.status}`))
break
}
}
/** 组装端口agent 后端直连 SDK其余为自包含实现不触达核心层。 */
function makePorts(runsDir: string): WorkflowPorts {
return {
agentRunner: { runAgentToResult: llmAgent },
progressEmitter: { emit: printProgress },
taskRegistrar: makeTaskRegistrar(),
journalStore: createFileJournalStore(runsDir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: process.cwd(),
budgetTotal: null,
}),
}
}
async function main(): Promise<void> {
const topic = process.argv[2]
if (!topic) {
console.error(paint.red('✗ 用法run.ts <研究主题>'))
console.error(paint.dim(' 例bun run run.ts "Edge Computing"'))
process.exit(1)
}
clientRef.client = new Anthropic({ logLevel: 'off' })
const runsDir =
process.env.RESEARCH_RUNS_DIR ?? join(homedir(), '.claude', 'workflow-runs')
const script = await readFile(SCRIPT_FILE, 'utf-8')
const result = await runWorkflow({
script,
args: { topic },
runId: `research-${Date.now()}`,
ports: makePorts(runsDir),
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: process.cwd(),
budgetTotal: null,
})
if (result.status !== 'completed') {
console.error(
paint.red(`✗ workflow ${result.status}${result.error ?? ''}`),
)
process.exit(1)
}
const ret = result.returnValue as {
report?: string
topic?: string
anglesCovered?: number
findingsDeepened?: number
}
console.log(
paint.bold(
paint.green(`\n════════ 技术研究报告:${ret.topic ?? topic} ════════`),
),
)
console.log(
paint.dim(
`角度数=${ret.anglesCovered ?? '?'} 深挖=${ret.findingsDeepened ?? '?'}`,
),
)
console.log(ret.report ?? '(无报告输出)')
}
// 仅作为脚本直接运行时启动import 不触发,便于冒烟/复用端口工厂)
if (import.meta.main) {
await main()
}

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@@ -0,0 +1,251 @@
/**
* 冒烟端到端入口 —— 真实 SDK + 引擎,最小验证端到端通路。
* 3 次模型调用2 角度并行 schema + 1 综合),秒级完成、低成本。
* 覆盖runWorkflow、parallel屏障、agent(schema) 结构化、agent 文本、进度事件。
*
* 用法:
* ANTHROPIC_API_KEY=sk-... \
* bun run packages/workflow-engine/examples/smoke.ts
*
* 可选ANTHROPIC_MODEL默认 claude-sonnet-4-5
*/
import Anthropic from '@anthropic-ai/sdk'
import { homedir } from 'node:os'
import { join } from 'node:path'
import {
createFileJournalStore,
createHostHandle,
runWorkflow,
Semaphore,
validateAgainstSchema,
type AgentRunParams,
type AgentRunResult,
type ProgressEvent,
type WorkflowPorts,
} from '@claude-code-best/workflow-engine'
const DEFAULT_MODEL = process.env.ANTHROPIC_MODEL ?? 'claude-sonnet-4-5'
const clientRef: { client: Anthropic | null } = { client: null }
const POINT_SCHEMA = {
type: 'object',
required: ['point'],
properties: { point: { type: 'string' } },
}
// 最小 workflow2 角度并行schema 结构化)→ 综合(文本)。脚本内用 + 拼接避免 ${}。
const SMOKE_SCRIPT =
`
export const meta = { name: 'smoke', description: 'minimal end-to-end smoke' }
phase('Smoke')
const angles = ['一句话定义', '一个最核心价值']
const points = await parallel(
angles.map(a => () =>
agent('用简短一句话30 字内)说明 workflow 编排的「' + a + '」。', {
label: 'p:' + a,
schema: ` +
JSON.stringify(POINT_SCHEMA) +
`,
}),
),
)
const clean = points.filter(Boolean)
const joined = clean.map(p => p.point).join('')
const summary = await agent('把以下要点综合成一句中文结论。要点:' + joined, {
label: 'summary',
})
return { points: clean, summary }
`
// API 并发上限(独立于引擎的 CPU semaphore——LLM API 对并发远比 CPU 敏感,默认 3
const apiSem = new Semaphore(
Math.max(1, Number(process.env.WORKFLOW_API_CONCURRENCY) || 3),
)
/** 429/5xx/连接错误指数退避重试,最多 4 次。 */
async function withRetry<T>(fn: () => Promise<T>, retries = 4): Promise<T> {
for (let attempt = 0; ; attempt++) {
try {
return await fn()
} catch (e) {
if (!isRetryable(e) || attempt >= retries) throw e
const wait = Math.min(500 * 2 ** attempt, 8000)
await new Promise(r => {
setTimeout(r, wait)
})
}
}
}
function isRetryable(e: unknown): boolean {
const err = e as { status?: number; name?: string }
if (err.status === 429) return true
if (typeof err.status === 'number' && err.status >= 500) return true
if (typeof err.name === 'string' && /Connection|Timeout/i.test(err.name)) {
return true
}
return false
}
function errSummary(e: unknown): string {
const err = e as {
status?: number
error?: { type?: string }
message?: string
}
if (err.status) return `HTTP ${err.status} ${err.error?.type ?? ''}`.trim()
return (err.message ?? 'unknown').slice(0, 120)
}
async function llmAgent(params: AgentRunParams): Promise<AgentRunResult> {
const client = clientRef.client
if (client === null) return { kind: 'dead' }
const schemaInstruction = params.schema
? '\n\n以单独 JSON 对象回答(无围栏无解释),匹配 schema\n' +
JSON.stringify(params.schema)
: ''
const release = await apiSem.acquire()
try {
const resp = await withRetry(() =>
client.messages.create({
model: params.model ?? DEFAULT_MODEL,
max_tokens: params.maxTokens ?? 1024,
messages: [
{ role: 'user', content: params.prompt + schemaInstruction },
],
}),
)
const outputTokens = resp.usage.output_tokens
if (resp.stop_reason === 'max_tokens') return { kind: 'dead' }
const text = resp.content
.map(block => (block.type === 'text' ? block.text : ''))
.join('')
.trim()
if (params.schema) {
const parsed = extractJsonObject(text)
if (parsed === null) return { kind: 'dead' }
if (!validateAgainstSchema(parsed, params.schema).valid) {
return { kind: 'dead' }
}
return { kind: 'ok', output: parsed as object, usage: { outputTokens } }
}
return { kind: 'ok', output: text, usage: { outputTokens } }
} catch (e) {
console.error(`${errSummary(e)}`)
return { kind: 'dead' }
} finally {
release()
}
}
function extractJsonObject(text: string): unknown | null {
const stripped = text.replace(/```(?:json)?/gi, '').trim()
const start = stripped.indexOf('{')
if (start < 0) {
try {
return JSON.parse(stripped)
} catch {
return null
}
}
let depth = 0
let inStr: string | null = null
for (let i = start; i < stripped.length; i++) {
const ch = stripped[i]
if (inStr) {
if (ch === '\\') i++
else if (ch === inStr) inStr = null
continue
}
if (ch === '"' || ch === "'" || ch === '`') inStr = ch
else if (ch === '{') depth++
else if (ch === '}') {
depth--
if (depth === 0) {
try {
return JSON.parse(stripped.slice(start, i + 1))
} catch {
return null
}
}
}
}
return null
}
function makePorts(runsDir: string): WorkflowPorts {
return {
agentRunner: { runAgentToResult: llmAgent },
progressEmitter: {
emit: (e: ProgressEvent) => {
if (e.type === 'phase_started') console.log(`\n━ phase: ${e.phase}`)
else if (e.type === 'agent_started')
console.log(`${e.label ?? 'agent'}`)
else if (e.type === 'agent_done')
console.log(
` ${e.result.kind === 'ok' ? '✓' : '✗'} ${e.label ?? ''} [${e.result.kind}]`,
)
else if (e.type === 'log') console.log(` · ${e.message}`)
},
},
taskRegistrar: {
register: () => ({
runId: 'smoke',
signal: new AbortController().signal,
}),
complete() {},
fail() {},
kill() {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(runsDir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: process.cwd(),
budgetTotal: null,
}),
}
}
async function main(): Promise<void> {
const apiKey = process.env.ANTHROPIC_API_KEY
if (!apiKey) {
console.error('✗ 缺少 ANTHROPIC_API_KEY 环境变量')
process.exit(1)
}
clientRef.client = new Anthropic({ apiKey, logLevel: 'off' })
const runsDir =
process.env.RESEARCH_RUNS_DIR ?? join(homedir(), '.claude', 'workflow-runs')
const result = await runWorkflow({
script: SMOKE_SCRIPT,
args: {},
runId: `smoke-${Date.now()}`,
ports: makePorts(runsDir),
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: process.cwd(),
budgetTotal: null,
})
if (result.status !== 'completed') {
console.error(`\n✗ FAIL${result.status} ${result.error ?? ''}`)
process.exit(1)
}
const ret = result.returnValue as {
points: Array<{ point: string }>
summary: string
}
console.log('\n━━━━━━━━ 冒烟结果 ━━━━━━━━')
for (const p of ret.points) console.log(`${p.point}`)
console.log(`\n综合${ret.summary}`)
console.log(
`\n✓ PASS端到端通路正常${ret.points.length} 要点 + 综合3 次模型调用)`,
)
}
if (import.meta.main) {
await main()
}

View File

@@ -0,0 +1,19 @@
{
"name": "@claude-code-best/workflow-engine",
"version": "0.1.0",
"private": true,
"type": "module",
"main": "./src/index.ts",
"types": "./src/index.ts",
"exports": {
".": "./src/index.ts",
"./package.json": "./package.json"
},
"dependencies": {
"ajv": "^8.18.0",
"zod": "^4.3.6"
},
"devDependencies": {
"@anthropic-ai/sdk": "^0.81.0"
}
}

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@@ -0,0 +1,527 @@
import { expect, test } from 'bun:test'
import { mkdtemp, mkdir, readFile, rm, writeFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { createWorkflowTool } from '../tool/WorkflowTool.js'
import { createHostHandle, type WorkflowPorts } from '../ports.js'
import type { AgentRunParams, AgentRunResult, ProgressEvent } from '../types.js'
function mockPorts(
runsDir: string,
results: Map<string, AgentRunResult>,
): {
ports: WorkflowPorts
events: ProgressEvent[]
runStatus: Map<string, string>
} {
const events: ProgressEvent[] = []
const runStatus = new Map<string, string>()
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async (p: AgentRunParams) =>
results.get(p.prompt) ?? { kind: 'dead' },
},
progressEmitter: { emit: e => void events.push(e) },
taskRegistrar: {
register: () => ({
runId: 'run-x',
signal: new AbortController().signal,
}),
complete: id => void runStatus.set(id, 'completed'),
fail: id => void runStatus.set(id, 'failed'),
kill: id => void runStatus.set(id, 'killed'),
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: runsDir,
budgetTotal: null,
}),
}
return { ports, events, runStatus }
}
test('call returns launch message and completes in background', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const { ports, runStatus } = mockPorts(
dir,
new Map([
['compute', { kind: 'ok', output: '42', usage: { outputTokens: 1 } }],
]),
)
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ script: `return agent('compute')` },
undefined,
undefined,
undefined,
)
expect(res.data.output).toContain('run_id: run-x')
await new Promise(r => {
setTimeout(r, 50)
})
expect(runStatus.get('run-x')).toBe('completed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('inline script persists to run directory, returns real scriptPath', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const { ports } = mockPorts(
dir,
new Map([['x', { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }]]),
)
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ script: `return agent('x')` },
undefined,
undefined,
undefined,
)
const expectedPath = join(
dir,
'.claude',
'workflow-runs',
'run-x',
'script.js',
)
expect(res.data.output).toContain(expectedPath)
expect(await readFile(expectedPath, 'utf-8')).toBe(`return agent('x')`)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('missing script/name/scriptPath → returns error (does not enter background)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const { ports, runStatus } = mockPorts(dir, new Map())
const tool = createWorkflowTool(ports)
const res = await tool.call({}, undefined, undefined, undefined)
expect(res.data.output).toMatch(/^Error:/)
expect(runStatus.size).toBe(0)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('script syntax error → returns validation error (does not enter background)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const { ports, runStatus } = mockPorts(dir, new Map())
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ script: `return ((` },
undefined,
undefined,
undefined,
)
expect(res.data.output).toMatch(/validation failed|Error/i)
expect(runStatus.size).toBe(0)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('name resolves to .claude/workflows/<name>.ts', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
await mkdir(join(dir, '.claude', 'workflows'), { recursive: true })
await writeFile(
join(dir, '.claude', 'workflows', 'release.ts'),
`return agent('compute')`,
)
const { ports, runStatus } = mockPorts(
dir,
new Map([
['compute', { kind: 'ok', output: 'done', usage: { outputTokens: 1 } }],
]),
)
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ name: 'release' },
undefined,
undefined,
undefined,
)
expect(res.data.output).toContain('run_id')
await new Promise(r => {
setTimeout(r, 50)
})
expect(runStatus.get('run-x')).toBe('completed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('renderToolUseMessage / mapToolResultToToolResultBlockParam', () => {
const dir = '/tmp'
const { ports } = mockPorts(dir, new Map())
const tool = createWorkflowTool(ports)
expect(tool.renderToolUseMessage({ name: 'release' })).toBe(
'Workflow: release',
)
const block = tool.mapToolResultToToolResultBlockParam(
{ output: 'hi' },
'tu-1',
)
expect(block.tool_use_id).toBe('tu-1')
expect(block.type).toBe('tool_result')
expect(block.content[0]!.text).toBe('hi')
})
test('scriptPath resolves to file content and runs in background', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const scriptFile = join(dir, 'external.ts')
await writeFile(scriptFile, `return agent('compute')`)
const { ports, runStatus } = mockPorts(
dir,
new Map([
['compute', { kind: 'ok', output: 'done', usage: { outputTokens: 1 } }],
]),
)
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ scriptPath: scriptFile },
undefined,
undefined,
undefined,
)
expect(res.data.output).toContain('run_id')
expect(res.data.output).toContain('external.ts')
await new Promise(r => {
setTimeout(r, 50)
})
expect(runStatus.get('run-x')).toBe('completed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('script runtime failure → onFinish routes to fail', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const { ports, runStatus } = mockPorts(dir, new Map())
const tool = createWorkflowTool(ports)
await tool.call(
{ script: `throw new Error('boom')` },
undefined,
undefined,
undefined,
)
await new Promise(r => {
setTimeout(r, 50)
})
expect(runStatus.get('run-x')).toBe('failed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('metadata methods: description/prompt/renderToolUseMessage', async () => {
const { ports } = mockPorts('/tmp', new Map())
const tool = createWorkflowTool(ports)
expect(tool.isEnabled()).toBe(true)
expect(tool.isReadOnly({})).toBe(false)
expect(await tool.description()).toBeTruthy()
expect(await tool.prompt()).toContain('Workflow')
expect(tool.renderToolUseMessage({})).toBe('Workflow: unknown')
expect(tool.renderToolUseMessage({ resumeFromRunId: 'r1' })).toBe(
'Workflow resume: r1',
)
})
test('prompt includes default concurrency 3 + AskUserQuestion guidance', async () => {
const { ports } = mockPorts('/tmp', new Map())
const tool = createWorkflowTool(ports)
const p = await tool.prompt()
expect(p).toMatch(/default is 3/i)
expect(p).toMatch(/maxConcurrency/i)
expect(p).toMatch(/AskUserQuestion/i)
})
test('name does not exist → returns error (does not enter background)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
await mkdir(join(dir, '.claude', 'workflows'), { recursive: true })
const { ports, runStatus } = mockPorts(dir, new Map())
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ name: 'nope' },
undefined,
undefined,
undefined,
)
expect(res.data.output).toMatch(/^Error:/)
expect(runStatus.size).toBe(0)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('workflow aborted → onFinish routes to kill', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const runStatus = new Map<string, string>()
const ac = new AbortController()
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async () => ({
kind: 'ok',
output: 'x',
usage: { outputTokens: 1 },
}),
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'run-x', signal: ac.signal }),
complete: id => void runStatus.set(id, 'completed'),
fail: id => void runStatus.set(id, 'failed'),
kill: id => void runStatus.set(id, 'killed'),
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
ac.abort()
const tool = createWorkflowTool(ports)
await tool.call(
{ script: `return agent('x')` },
undefined,
undefined,
undefined,
)
await new Promise(r => {
setTimeout(r, 50)
})
expect(runStatus.get('run-x')).toBe('killed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('args defensively parses when a JSON-stringified object (backward compatible with old z.string() contract)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const capturedPrompts: unknown[] = []
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async (p: AgentRunParams) => {
capturedPrompts.push(p.prompt)
return { kind: 'ok', output: 'done', usage: { outputTokens: 1 } }
},
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({
runId: 'run-x',
signal: new AbortController().signal,
}),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
const tool = createWorkflowTool(ports)
await tool.call(
{
script: `return agent(args.commit)`,
// simulate stringified JSON sent by model under old contract
args: '{"commit":"abc123"}',
},
undefined,
undefined,
undefined,
)
await new Promise(r => {
setTimeout(r, 50)
})
// if args not normalized: args.commit === undefined (string has no commit property)
// if args normalized: args.commit === 'abc123'
expect(capturedPrompts).toContain('abc123')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('args keeps original value for non-legal JSON string without throwing', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const capturedPrompts: unknown[] = []
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async (p: AgentRunParams) => {
capturedPrompts.push(p.prompt)
return { kind: 'ok', output: 'ok', usage: { outputTokens: 1 } }
},
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({
runId: 'run-x',
signal: new AbortController().signal,
}),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
const tool = createWorkflowTool(ports)
await tool.call(
{
// script uses args as a string: agent(args) → agent('hello')
script: `return agent(args)`,
args: 'hello',
},
undefined,
undefined,
undefined,
)
await new Promise(r => {
setTimeout(r, 50)
})
// 'hello' is not valid JSON, should be kept as a string
expect(capturedPrompts).toContain('hello')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('scriptPath out of bounds (resolved outside cwd) → rejected with error (prevents arbitrary file read)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const subDir = join(dir, 'sub')
await mkdir(subDir, { recursive: true })
// place a script outside subDir (inside dir)
const outsideScript = join(dir, 'outside.ts')
await writeFile(outsideScript, `return agent('x')`)
// host.cwd = subDir, scriptPath is an absolute path outside subDir
const { ports, runStatus } = mockPorts(subDir, new Map())
const tool = createWorkflowTool(ports)
const res = await tool.call(
{ scriptPath: outsideScript },
undefined,
undefined,
undefined,
)
expect(res.data.output).toMatch(/^Error:/)
expect(res.data.output).toMatch(/out of bounds|outside|not within/i)
expect(runStatus.size).toBe(0)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('name contains ".." path segment → rejected (prevents path traversal escaping workflowDir)', async () => {
const outer = await mkdtemp(join(tmpdir(), 'wf-outer-'))
try {
// place evil.ts at outer root (outside .claude/workflows)
await writeFile(join(outer, 'evil.ts'), `return agent('x')`)
await mkdir(join(outer, '.claude', 'workflows'), { recursive: true })
const { ports, runStatus } = mockPorts(outer, new Map())
const tool = createWorkflowTool(ports)
// name = '../../evil' → after join escapes the workflows directory to outer/evil.ts
const res = await tool.call(
{ name: '../../evil' },
undefined,
undefined,
undefined,
)
expect(res.data.output).toMatch(/^Error:/)
expect(runStatus.size).toBe(0)
} finally {
await rm(outer, { recursive: true, force: true })
}
})
test('name contains path separators or is absolute → rejected', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
await mkdir(join(dir, '.claude', 'workflows'), { recursive: true })
const { ports } = mockPorts(dir, new Map())
const tool = createWorkflowTool(ports)
for (const badName of ['foo/bar', '/etc/passwd', '..', '.']) {
const res = await tool.call(
{ name: badName },
undefined,
undefined,
undefined,
)
expect(res.data.output).toMatch(/^Error:/)
}
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('returnValue is an object → complete (formatValue takes JSON branch)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-tool-'))
try {
const { ports, runStatus } = mockPorts(
dir,
new Map([['x', { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }]]),
)
const tool = createWorkflowTool(ports)
await tool.call(
{
script: `await agent('x')\nreturn { ok: true, n: 1 }`,
},
undefined,
undefined,
undefined,
)
await new Promise(r => {
setTimeout(r, 50)
})
expect(runStatus.get('run-x')).toBe('completed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})

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import { expect, test } from 'bun:test'
import {
AgentAdapterRegistry,
AdapterNotFoundError,
type AgentAdapter,
} from '../agentAdapter.js'
import { createHostHandle } from '../ports.js'
import type { AgentRunParams, AgentRunResult } from '../types.js'
function makeAdapter(
id: string,
result: AgentRunResult = {
kind: 'ok',
output: `out-${id}`,
usage: { outputTokens: 1 },
},
): AgentAdapter {
return {
id,
capabilities: { structuredOutput: true },
async run() {
return result
},
}
}
const P = (over: Partial<AgentRunParams> = {}): AgentRunParams => ({
prompt: 'p',
...over,
})
const CTX = {
host: createHostHandle(null),
signal: new AbortController().signal,
runId: 'r',
agentId: 1,
}
test('resolve goes to default adapter, run returns result', async () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('a'))
.register(makeAdapter('b'))
.default('a')
expect(reg.resolve(P()).id).toBe('a')
const r = await reg.resolve(P()).run(P(), CTX)
expect(r.kind).toBe('ok')
})
test('route agentType hit takes priority over default', () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('default'))
.register(makeAdapter('research'))
.route({ kind: 'agentType', agentType: 'researcher', adapter: 'research' })
.default('default')
expect(reg.resolve(P({ agentType: 'researcher' })).id).toBe('research')
expect(reg.resolve(P({ agentType: 'other' })).id).toBe('default')
})
test('route model prefix match', () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('cheap'))
.register(makeAdapter('strong'))
.route({ kind: 'model', pattern: 'claude-opus', adapter: 'strong' })
.default('cheap')
expect(reg.resolve(P({ model: 'claude-opus-4' })).id).toBe('strong')
expect(reg.resolve(P({ model: 'claude-sonnet-4' })).id).toBe('cheap')
expect(reg.resolve(P()).id).toBe('cheap') // no model → default
})
test('route custom predicate', () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('main'))
.register(makeAdapter('special'))
.route({
kind: 'custom',
match: p => p.prompt.includes('VIP'),
adapter: 'special',
})
.default('main')
expect(reg.resolve(P({ prompt: 'handle VIP case' })).id).toBe('special')
expect(reg.resolve(P({ prompt: 'normal' })).id).toBe('main')
})
test('rules match in order (first hit wins)', () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('a'))
.register(makeAdapter('b'))
.route({ kind: 'agentType', agentType: 'x', adapter: 'a' })
.route({ kind: 'agentType', agentType: 'x', adapter: 'b' })
expect(reg.resolve(P({ agentType: 'x' })).id).toBe('a')
})
test('rule-matched adapter not registered → skip that rule and continue matching', () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('real'))
.route({ kind: 'agentType', agentType: 'x', adapter: 'ghost' })
.route({ kind: 'agentType', agentType: 'x', adapter: 'real' })
expect(reg.resolve(P({ agentType: 'x' })).id).toBe('real')
})
test('no match and no default → AdapterNotFoundError', () => {
const reg = new AgentAdapterRegistry().register(makeAdapter('a'))
expect(() => reg.resolve(P())).toThrow(AdapterNotFoundError)
})
test('default points to an unregistered adapter → still throws (no silent fallback)', () => {
const reg = new AgentAdapterRegistry()
.register(makeAdapter('a'))
.default('missing')
expect(() => reg.resolve(P())).toThrow(AdapterNotFoundError)
})
test('has / get', () => {
const reg = new AgentAdapterRegistry().register(makeAdapter('a'))
expect(reg.has('a')).toBe(true)
expect(reg.has('b')).toBe(false)
expect(reg.get('a')?.id).toBe('a')
expect(reg.get('b')).toBeUndefined()
})
test('initializeAll / disposeAll triggers lifecycle (skips unimplemented)', async () => {
const events: string[] = []
const withLifecycle: AgentAdapter = {
id: 'a',
capabilities: { structuredOutput: false },
async run() {
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
async initialize() {
events.push('init-a')
},
async dispose() {
events.push('dispose-a')
},
}
const noLifecycle = makeAdapter('b') // no initialize/dispose
const reg = new AgentAdapterRegistry()
.register(withLifecycle)
.register(noLifecycle)
await reg.initializeAll()
await reg.disposeAll()
expect(events).toEqual(['init-a', 'dispose-a'])
})
test('capabilities declaration is readable', () => {
const adapter: AgentAdapter = {
id: 'a',
capabilities: { structuredOutput: true, tools: true, stream: false },
async run() {
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
}
expect(adapter.capabilities.structuredOutput).toBe(true)
expect(adapter.capabilities.tools).toBe(true)
expect(adapter.capabilities.stream).toBe(false)
})

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import { expect, test } from 'bun:test'
import { createEngineContext } from '../engine/context.js'
import { makeHooks } from '../engine/hooks.js'
import { createBufferingEmitter } from '../progress/events.js'
import { createHostHandle, type WorkflowPorts } from '../ports.js'
import type { AgentRunParams, AgentRunResult } from '../types.js'
function build(results: Map<string, AgentRunResult>) {
const { emitter, events } = createBufferingEmitter()
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async (p: AgentRunParams) =>
results.get(p.prompt) ?? { kind: 'dead' },
},
progressEmitter: emitter,
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
signal: new AbortController().signal,
cwd: '/tmp',
budgetTotal: null,
}),
}
const ctx = createEngineContext({
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
runId: 'r',
workflowName: 'w',
cwd: '/tmp',
budgetTotal: null,
})
return { ctx, events, hooks: makeHooks(ctx, async () => null) }
}
test('concurrent agents each get a unique agentId, started/done are paired', async () => {
const ok = (out: string): AgentRunResult => ({
kind: 'ok',
output: out,
usage: { outputTokens: 1 },
})
const { ctx, events, hooks } = build(
new Map([
['a', ok('1')],
['b', ok('2')],
]),
)
await hooks.parallel([() => hooks.agent('a'), () => hooks.agent('b')])
const started = events.filter(e => e.type === 'agent_started')
const done = events.filter(e => e.type === 'agent_done')
expect(started).toHaveLength(2)
expect(done).toHaveLength(2)
const ids = started.map(e => (e as { agentId: number }).agentId)
expect(new Set(ids).size).toBe(2)
for (const d of done as Array<{ agentId: number }>) {
expect(ids).toContain(d.agentId)
}
expect(ctx.resources.agentIdSeq.value).toBe(2)
})
test('agentId increases monotonically', async () => {
const ok = (out: string): AgentRunResult => ({
kind: 'ok',
output: out,
usage: { outputTokens: 1 },
})
const { events, hooks } = build(
new Map([
['a', ok('1')],
['b', ok('2')],
['c', ok('3')],
]),
)
await hooks.agent('a')
await hooks.agent('b')
await hooks.agent('c')
const ids = events
.filter(e => e.type === 'agent_started')
.map(e => (e as { agentId: number }).agentId)
expect(ids).toEqual([0, 1, 2])
})

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import { expect, test } from 'bun:test'
import { Budget, BudgetExhaustedError } from '../engine/budget.js'
test('total=null means unlimited', () => {
const b = new Budget(null)
expect(b.total).toBeNull()
expect(b.remaining()).toBe(Infinity)
b.addOutputTokens(999999)
expect(b.spent()).toBe(999999)
expect(() => b.assertCanSpend()).not.toThrow()
})
test('accumulates and throws when cap exceeded', () => {
const b = new Budget(100)
expect(b.remaining()).toBe(100)
b.addOutputTokens(40)
expect(b.spent()).toBe(40)
expect(b.remaining()).toBe(60)
expect(() => b.assertCanSpend()).not.toThrow()
b.addOutputTokens(60)
expect(b.spent()).toBe(100)
expect(() => b.assertCanSpend()).toThrow(BudgetExhaustedError)
})
test('addOutputTokens ignores negative values', () => {
const b = new Budget(100)
b.addOutputTokens(-50)
expect(b.spent()).toBe(0)
})

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import { expect, test } from 'bun:test'
import {
clampMaxConcurrency,
Semaphore,
maxConcurrency,
} from '../engine/concurrency.js'
import { DEFAULT_MAX_CONCURRENCY, MAX_CONCURRENCY_CAP } from '../constants.js'
test('Semaphore limits concurrency, permit transfer does not leak', async () => {
const sem = new Semaphore(2)
let active = 0
let peak = 0
const task = async (): Promise<void> => {
const release = await sem.acquire()
active++
peak = Math.max(peak, active)
await new Promise(r => {
setTimeout(r, 10)
})
active--
release()
}
await Promise.all(Array.from({ length: 6 }, () => task()))
expect(peak).toBe(2) // never exceeds permits
})
test('maxConcurrency returns DEFAULT_MAX_CONCURRENCY (=3)', () => {
expect(maxConcurrency()).toBe(DEFAULT_MAX_CONCURRENCY)
expect(maxConcurrency()).toBe(3)
})
test('clampMaxConcurrency: undefined/NaN→DEFAULT; <1→1; >CAP→CAP; normal value kept', () => {
expect(clampMaxConcurrency(undefined)).toBe(DEFAULT_MAX_CONCURRENCY)
expect(clampMaxConcurrency(Number.NaN)).toBe(DEFAULT_MAX_CONCURRENCY)
expect(clampMaxConcurrency(0)).toBe(1)
expect(clampMaxConcurrency(-3)).toBe(1)
expect(clampMaxConcurrency(MAX_CONCURRENCY_CAP + 100)).toBe(
MAX_CONCURRENCY_CAP,
)
expect(clampMaxConcurrency(5)).toBe(5)
expect(clampMaxConcurrency(1)).toBe(1)
expect(clampMaxConcurrency(MAX_CONCURRENCY_CAP)).toBe(MAX_CONCURRENCY_CAP)
// decimal truncation (Semaphore already does Math.max(1, Math.floor); clampMaxConcurrency explicitly truncs)
expect(clampMaxConcurrency(2.9)).toBe(2)
})
test('Semaphore(0) has at least 1 permit, acquire does not block', async () => {
const sem = new Semaphore(0)
const release = await sem.acquire()
expect(release).toBeTypeOf('function')
release()
})
test('Semaphore wakes up in FIFO order', async () => {
const sem = new Semaphore(1)
const order: string[] = []
const first = await sem.acquire()
const p1 = sem.acquire().then(r => {
order.push('p1')
return r
})
const p2 = sem.acquire().then(r => {
order.push('p2')
return r
})
await new Promise(r => {
setTimeout(r, 5)
})
expect(order).toEqual([])
first()
await new Promise(r => {
setTimeout(r, 5)
})
expect(order).toEqual(['p1'])
;(await p1)()
await new Promise(r => {
setTimeout(r, 5)
})
expect(order).toEqual(['p1', 'p2'])
;(await p2)()
})
test('Semaphore.acquire with an aborted signal → immediately rejects, no permit consumed', async () => {
// Fix L: a queued waiter on abort must reject immediately instead of waiting for a permit.
// Otherwise a cancelled agent blocks on acquire(), the permit is consumed (transferred to a dead waiter),
// reducing actual concurrency capacity; in the worst case all waiters are cancelled while the semaphore still queues for dead waiters.
const sem = new Semaphore(1)
const ac = new AbortController()
// occupy the only permit
const first = await sem.acquire()
// queued waiter
const queued = sem.acquire(ac.signal)
await new Promise(r => {
setTimeout(r, 5)
})
// abort → waiter should reject immediately
ac.abort()
await expect(queued).rejects.toThrow()
// no permit leak: after releasing first, a new acquire should get it immediately (no stale waiter preemption)
first()
const third = await sem.acquire()
expect(third).toBeTypeOf('function')
third()
})
test('Semaphore.acquire with an already aborted signal → synchronous reject', async () => {
const sem = new Semaphore(1)
const ac = new AbortController()
ac.abort()
// signal already aborted, should not acquire even if a permit is available (semantics: caller already cancelled)
// Note: current implementation checks available first and may return directly. This test locks "check abort first".
// If the implementation chose "prefer granting when permit available", this test would change to: acquire succeeds, caller checks abort later.
// Current implementation chose the former: aborted signal throws immediately, preventing dead agents from grabbing permits.
await expect(sem.acquire(ac.signal)).rejects.toThrow()
})

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import { expect, test } from 'bun:test'
import { createBufferingEmitter } from '../progress/events.js'
import {
createEngineContext,
createSharedResources,
} from '../engine/context.js'
import { WorkflowError } from '../engine/errors.js'
import { createHostHandle, type WorkflowPorts } from '../ports.js'
function mockPorts(): WorkflowPorts {
return {
agentRunner: { runAgentToResult: async () => ({ kind: 'dead' }) },
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: '/tmp',
budgetTotal: null,
}),
}
}
test('createSharedResources initializes budget and counts', () => {
const r = createSharedResources(100)
expect(r.budget.total).toBe(100)
expect(r.agentCountBox.value).toBe(0)
expect(r.depth).toBe(0)
})
test('createSharedResources: maxConcurrency controls semaphore permits', async () => {
// default permits = DEFAULT_MAX_CONCURRENCY = 3: after 4 acquires the 4th is pending
const r1 = createSharedResources(null)
const releases1: Array<() => void> = []
for (let i = 0; i < 3; i++) releases1.push(await r1.semaphore.acquire())
let fourthResolved = false
const pending = r1.semaphore.acquire().then(r => {
fourthResolved = true
return r
})
await new Promise(res => {
setTimeout(res, 5)
})
expect(fourthResolved).toBe(false)
releases1[0]!() // release one, the fourth should be woken up
releases1.push(await pending)
for (const rel of releases1) rel()
// explicit maxConcurrency=2: the 3rd acquire is pending
const r2 = createSharedResources(null, 2)
const releases2: Array<() => void> = []
releases2.push(await r2.semaphore.acquire())
releases2.push(await r2.semaphore.acquire())
let thirdResolved = false
const pending2 = r2.semaphore.acquire().then(r => {
thirdResolved = true
return r
})
await new Promise(res => {
setTimeout(res, 5)
})
expect(thirdResolved).toBe(false)
releases2[0]!()
releases2.push(await pending2)
for (const rel of releases2) rel()
})
test('createEngineContext passes maxConcurrency through to resources.semaphore', async () => {
const ctx = createEngineContext({
ports: mockPorts(),
host: createHostHandle(null),
signal: new AbortController().signal,
runId: 'r-mc',
workflowName: 'w',
cwd: '/tmp',
budgetTotal: null,
maxConcurrency: 1,
})
// maxConcurrency=1: the second acquire should be pending
const first = await ctx.resources.semaphore.acquire()
let secondResolved = false
const pending = ctx.resources.semaphore.acquire().then(r => {
secondResolved = true
return r
})
await new Promise(res => {
setTimeout(res, 5)
})
expect(secondResolved).toBe(false)
first()
await pending
})
test('createEngineContext copies journal and resets cursor', () => {
const journal = [
{
key: 'k',
seq: 0,
result: { kind: 'ok' as const, output: 'x', usage: { outputTokens: 1 } },
},
]
const ctx = createEngineContext({
ports: mockPorts(),
host: createHostHandle(null),
signal: new AbortController().signal,
runId: 'r1',
workflowName: 'w',
cwd: '/tmp',
budgetTotal: null,
journal,
})
expect(ctx.journal).toHaveLength(1)
expect(ctx.journalIndex).toBe(0)
expect(ctx.journalInvalidated).toBe(false)
})
test('createBufferingEmitter collects events', () => {
const { emitter, events } = createBufferingEmitter()
emitter.emit({ type: 'log', runId: 'r', message: 'hi' })
expect(events).toHaveLength(1)
})
test('WorkflowError is recognizable', () => {
const e = new WorkflowError('boom')
expect(e).toBeInstanceOf(Error)
expect(e.message).toBe('boom')
})

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import { expect, test } from 'bun:test'
import { WorkflowError, WorkflowAbortedError } from '../engine/errors.js'
test('WorkflowError carries message and name', () => {
const e = new WorkflowError('script error')
expect(e).toBeInstanceOf(Error)
expect(e.message).toBe('script error')
expect(e.name).toBe('WorkflowError')
})
test('WorkflowAbortedError is a recognizable cancellation error', () => {
const e = new WorkflowAbortedError()
expect(e).toBeInstanceOf(Error)
expect(e.name).toBe('WorkflowAbortedError')
expect(e.message).toBeTruthy()
})
test('the two error types can be distinguished by instanceof (not confused)', () => {
const a = new WorkflowError('x')
const b = new WorkflowAbortedError()
expect(a).toBeInstanceOf(WorkflowError)
expect(a).not.toBeInstanceOf(WorkflowAbortedError)
expect(b).toBeInstanceOf(WorkflowAbortedError)
expect(b).not.toBeInstanceOf(WorkflowError)
})
test('can be caught as a plain Error in a catch block', () => {
const throwIt = (): never => {
throw new WorkflowAbortedError()
}
let caught: unknown = null
try {
throwIt()
} catch (e) {
caught = e
}
expect(caught).toBeInstanceOf(Error)
expect(caught).toBeInstanceOf(WorkflowAbortedError)
})

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import { expect, test } from 'bun:test'
import {
createBufferingEmitter,
createProgressEmitter,
} from '../progress/events.js'
import type { ProgressEvent } from '../types.js'
const log = (message: string): ProgressEvent =>
({ type: 'log', runId: 'r', message }) as ProgressEvent
const phase = (p: string): ProgressEvent =>
({ type: 'phase_started', runId: 'r', phase: p }) as ProgressEvent
test('createBufferingEmitter collects all events in order', () => {
const { emitter, events } = createBufferingEmitter()
emitter.emit(log('a'))
emitter.emit(phase('P'))
expect(events).toHaveLength(2)
expect(events[0]).toEqual(log('a'))
expect(events[1]).toEqual(phase('P'))
})
test('createBufferingEmitter emit returns void (no return value)', () => {
const { emitter } = createBufferingEmitter()
expect(emitter.emit(log('x'))).toBeUndefined()
})
test('createBufferingEmitter instances are independent (no shared buffer)', () => {
const a = createBufferingEmitter()
const b = createBufferingEmitter()
a.emitter.emit(log('1'))
expect(a.events).toHaveLength(1)
expect(b.events).toHaveLength(0)
})
test('createProgressEmitter forwards events to callback (in order, no buffering)', () => {
const received: ProgressEvent[] = []
const emitter = createProgressEmitter(e => void received.push(e))
emitter.emit(log('a'))
emitter.emit(log('b'))
expect(received).toEqual([log('a'), log('b')])
})
test('createProgressEmitter triggers callback synchronously', () => {
let seen = ''
const emitter = createProgressEmitter(e => {
seen = (e as { message: string }).message
})
emitter.emit(log('sync'))
// callback already executed before emit returns
expect(seen).toBe('sync')
})

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import { expect, test } from 'bun:test'
import { AgentAdapterRegistry } from '../agentAdapter.js'
import { createEngineContext } from '../engine/context.js'
import { maxConcurrency, Semaphore } from '../engine/concurrency.js'
import { agentCallKey } from '../engine/journal.js'
import { makeHooks, type SubWorkflowRunner } from '../engine/hooks.js'
import { WorkflowError, WorkflowAbortedError } from '../engine/errors.js'
import { createBufferingEmitter } from '../progress/events.js'
import { createHostHandle, type WorkflowPorts } from '../ports.js'
import type {
AgentRunParams,
AgentRunResult,
JournalEntry,
ProgressEvent,
} from '../types.js'
type CtxOverrides = Partial<{
agentResults: Map<string, AgentRunResult>
runner: (params: AgentRunParams) => Promise<AgentRunResult>
pending: { kind: 'skip' | 'retry' } | null
journal: JournalEntry[]
budgetTotal: number | null
signal: AbortSignal
truncated: string[]
agentAdapterRegistry: AgentAdapterRegistry
loggerWarn: (msg: string) => void
// taskRegistrar agent-level abort binding (agent kill bridge).
// When provided, buildCtx injects it into ports.taskRegistrar; hooks.agent pushes the closure into adapterCtx.
registerAgentAbort: (
runId: string,
agentId: number,
ac: AbortController,
) => void
unregisterAgentAbort: (runId: string, agentId: number) => void
}>
function buildCtx(overrides: CtxOverrides = {}): {
ctx: ReturnType<typeof createEngineContext>
events: ProgressEvent[]
hooks: ReturnType<typeof makeHooks>
} {
const { emitter, events } = createBufferingEmitter()
const results = overrides.agentResults ?? new Map<string, AgentRunResult>()
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: overrides.runner
? overrides.runner
: async (params: AgentRunParams) =>
results.get(params.prompt) ?? { kind: 'dead' },
},
...(overrides.agentAdapterRegistry
? { agentAdapterRegistry: overrides.agentAdapterRegistry }
: {}),
progressEmitter: emitter,
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => overrides.pending ?? null,
...(overrides.registerAgentAbort
? { registerAgentAbort: overrides.registerAgentAbort }
: {}),
...(overrides.unregisterAgentAbort
? { unregisterAgentAbort: overrides.unregisterAgentAbort }
: {}),
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async (id: string) => {
overrides.truncated?.push(id)
},
},
permissionGate: { isAborted: () => false },
logger: {
debug: () => {},
event: () => {},
...(overrides.loggerWarn ? { warn: overrides.loggerWarn } : {}),
},
hostFactory: () => ({
handle: createHostHandle(null),
cwd: '/tmp',
budgetTotal: null,
}),
}
const ctx = createEngineContext({
ports,
host: createHostHandle(null),
signal: overrides.signal ?? new AbortController().signal,
runId: 'r1',
workflowName: 'w',
cwd: '/tmp',
budgetTotal: overrides.budgetTotal ?? null,
journal: overrides.journal,
})
const noopSub: SubWorkflowRunner = async () => null
return { ctx, events, hooks: makeHooks(ctx, noopSub) }
}
test('agent returns text result and counts', async () => {
const { ctx, hooks } = buildCtx({
agentResults: new Map([
['hi', { kind: 'ok', output: 'hello', usage: { outputTokens: 5 } }],
]),
})
const out = await hooks.agent('hi')
expect(out).toBe('hello')
expect(ctx.resources.agentCountBox.value).toBe(1)
})
test('agent skipped → null and not counted', async () => {
const { hooks } = buildCtx({
agentResults: new Map([['hi', { kind: 'skipped' }]]),
})
expect(await hooks.agent('hi')).toBeNull()
})
test('agent dead → null', async () => {
const { hooks } = buildCtx({
agentResults: new Map([['hi', { kind: 'dead' }]]),
})
expect(await hooks.agent('hi')).toBeNull()
})
// Retry: dead or non-abort throw both get one retry chance; WorkflowAbortedError (kill) is not retried.
// Retry still fails: dead stays dead; throw degrades to dead (does not break the workflow, hooks.agent returns null).
test('agent dead → retry once succeeds → ok', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
return calls === 1
? { kind: 'dead' as const }
: {
kind: 'ok' as const,
output: 'recovered',
usage: { outputTokens: 5 },
}
},
})
expect(await hooks.agent('p')).toBe('recovered')
expect(calls).toBe(2)
})
test('agent dead → retry still dead → final null (dead stays dead)', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
return { kind: 'dead' as const }
},
loggerWarn: () => {},
})
expect(await hooks.agent('p')).toBeNull()
expect(calls).toBe(2)
})
test('agent non-abort throw → retry once succeeds → ok', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
if (calls === 1) throw new Error('transient network')
return {
kind: 'ok' as const,
output: 'recovered',
usage: { outputTokens: 3 },
}
},
loggerWarn: () => {},
})
expect(await hooks.agent('p')).toBe('recovered')
expect(calls).toBe(2)
})
test('agent non-abort throw → retry still throws → degrade to dead (returns null, does not break workflow)', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
throw new Error('persistent')
},
loggerWarn: () => {},
})
expect(await hooks.agent('p')).toBeNull()
expect(calls).toBe(2)
})
test('agent throw WorkflowAbortedError → no retry, rethrow directly (kill does not allow retry)', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
throw new WorkflowAbortedError()
},
})
await expect(hooks.agent('p')).rejects.toBeInstanceOf(WorkflowAbortedError)
expect(calls).toBe(1)
})
test('agent ok → no retry (calls=1, saves a backend round-trip)', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
return {
kind: 'ok' as const,
output: 'first-try',
usage: { outputTokens: 1 },
}
},
})
expect(await hooks.agent('p')).toBe('first-try')
expect(calls).toBe(1)
})
test('agent skipped → no retry (user actively skips, no retry)', async () => {
let calls = 0
const { hooks } = buildCtx({
runner: async () => {
calls++
return { kind: 'skipped' as const }
},
})
expect(await hooks.agent('p')).toBeNull()
expect(calls).toBe(1)
})
test('agent journal hit does not call runner', async () => {
let called = 0
const { emitter } = createBufferingEmitter()
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async () => {
called++
return { kind: 'ok', output: 'live', usage: { outputTokens: 1 } }
},
},
progressEmitter: emitter,
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: '/tmp',
budgetTotal: null,
}),
}
const key = agentCallKey('hi', { prompt: 'hi' })
const ctx = createEngineContext({
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
runId: 'r1',
workflowName: 'w',
cwd: '/tmp',
budgetTotal: null,
journal: [
{
key,
seq: 0,
result: { kind: 'ok', output: 'cached', usage: { outputTokens: 1 } },
},
],
})
const hooks = makeHooks(ctx, async () => null)
expect(await hooks.agent('hi')).toBe('cached')
expect(called).toBe(0)
})
test('agent exceeding total cap throws', async () => {
const { hooks, ctx } = buildCtx()
ctx.resources.agentCountBox.value = 1000
await expect(hooks.agent('hi')).rejects.toThrow(WorkflowError)
})
test('parallel single item throws → null, others kept', async () => {
const { hooks } = buildCtx()
const out = await hooks.parallel([
async () => 'a',
async () => {
throw new Error('x')
},
async () => 'c',
])
expect(out).toEqual(['a', null, 'c'])
})
test('parallel single item throws → logger.warn records the failure reason', async () => {
const warns: string[] = []
const { hooks } = buildCtx({ loggerWarn: msg => warns.push(msg) })
await hooks.parallel([
async () => 'a',
async () => {
throw new Error('boom-x')
},
async () => 'c',
])
expect(warns.length).toBe(1)
expect(warns[0]).toMatch(/boom-x/)
})
test('pipeline chains stage by stage, stage throws → null', async () => {
const { hooks } = buildCtx()
const out = await hooks.pipeline(
[1, 2],
n => Promise.resolve((n as number) + 1),
m => Promise.resolve((m as number) * 10),
)
expect(out).toEqual([20, 30])
const out2 = await hooks.pipeline(
[1],
() => Promise.reject(new Error('boom')),
m => Promise.resolve(m),
)
expect(out2).toEqual([null])
})
test('pipeline stage throws → logger.warn records the failure reason', async () => {
const warns: string[] = []
const { hooks } = buildCtx({ loggerWarn: msg => warns.push(msg) })
await hooks.pipeline(
[1],
() => Promise.reject(new Error('stage-boom')),
m => Promise.resolve(m),
)
expect(warns.length).toBe(1)
expect(warns[0]).toMatch(/stage-boom/)
})
test('pipeline over 4096 throws', async () => {
const { hooks } = buildCtx()
await expect(
hooks.pipeline(Array(4097), () => Promise.resolve(1)),
).rejects.toThrow(WorkflowError)
})
test('phase switch emits phase_started/done; log emits log', () => {
const { hooks, events } = buildCtx()
hooks.phase('A')
hooks.log('hello')
hooks.phase('B')
expect(events.some(e => e.type === 'phase_started' && e.phase === 'A')).toBe(
true,
)
expect(events.some(e => e.type === 'phase_done' && e.phase === 'A')).toBe(
true,
)
expect(events.some(e => e.type === 'log' && e.message === 'hello')).toBe(true)
expect(events.some(e => e.type === 'phase_started' && e.phase === 'B')).toBe(
true,
)
})
// ---- boundary and error paths ----
test('agent dead also counts in agentCountBox', async () => {
const { hooks, ctx } = buildCtx({
agentResults: new Map([['x', { kind: 'dead' }]]),
})
await hooks.agent('x')
expect(ctx.resources.agentCountBox.value).toBe(1)
})
test('agent pendingAction=skip → null, does not call runner, not counted', async () => {
let called = 0
const { hooks, ctx } = buildCtx({
pending: { kind: 'skip' },
runner: async () => {
called++
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
})
expect(await hooks.agent('x')).toBeNull()
expect(called).toBe(0)
expect(ctx.resources.agentCountBox.value).toBe(0)
})
test('agent journal key diverges → invalidate and truncate', async () => {
const truncated: string[] = []
const { hooks, ctx } = buildCtx({
runner: async () => ({
kind: 'ok',
output: 'live',
usage: { outputTokens: 1 },
}),
journal: [
{
key: 'stale-key',
seq: 0,
result: { kind: 'ok', output: 'old', usage: { outputTokens: 1 } },
},
],
truncated,
})
const out = await hooks.agent('different-prompt')
expect(out).toBe('live')
expect(truncated).toContain('r1')
expect(ctx.journalInvalidated).toBe(true)
})
test('agent throws when budget exhausted', async () => {
const { hooks, ctx } = buildCtx({
budgetTotal: 10,
runner: async () => ({
kind: 'ok',
output: 'x',
usage: { outputTokens: 1 },
}),
})
ctx.resources.budget.addOutputTokens(10)
await expect(hooks.agent('x')).rejects.toThrow()
})
test('agent budget check inside semaphore critical section (queued waiter sees latest spent)', async () => {
// When semaphore capacity < parallel agent count, some agents will queue.
// Old bug: assertCanSpend was before acquire, all waiters entered the queue with spent=0 and passed the check;
// after permits released waiters ran the runner and deducted the budget without re-checking → all over-spent.
// Fix: assertCanSpend moved into the critical section; waiters check spent after being woken before deciding to run.
// Force capacity=1 (serializing semaphore) to ensure N>1 agents must queue.
const { hooks, ctx } = buildCtx({
budgetTotal: 10,
runner: async () => {
// make the runner a bit slow to ensure waiters truly queue
await new Promise(r => {
setTimeout(r, 5)
})
return {
kind: 'ok',
output: 'x',
usage: { outputTokens: 6 }, // 6 tokens each, 2 runs exceed 10
}
},
})
// replace the default semaphore with a single-permit one, forcing serialization
ctx.resources.semaphore = new Semaphore(1)
const results = await hooks.parallel([
() => hooks.agent('a'),
() => hooks.agent('b'),
() => hooks.agent('c'),
() => hooks.agent('d'),
])
// at least 1 agent is caught as null by parallel (assertCanSpend throws)
expect(results.some(r => r === null)).toBe(true)
// not all 4 should run and spend 24; the cap is at-most-one-over (first two spend 12, last two blocked)
expect(ctx.resources.budget.spent()).toBeLessThanOrEqual(12)
})
test('agent signal aborted → WorkflowAbortedError', async () => {
const ac = new AbortController()
ac.abort()
const { hooks } = buildCtx({
signal: ac.signal,
runner: async () => ({
kind: 'ok',
output: 'x',
usage: { outputTokens: 1 },
}),
})
await expect(hooks.agent('x')).rejects.toThrow(WorkflowAbortedError)
})
test('parallel over 4096 items throws', async () => {
const { hooks } = buildCtx()
await expect(
hooks.parallel(Array.from({ length: 4097 }, () => async () => 1)),
).rejects.toThrow(WorkflowError)
})
test('workflow() nesting beyond one level throws', async () => {
const { hooks, ctx } = buildCtx()
ctx.resources.depth = 1
await expect(hooks.workflow('child')).rejects.toThrow(WorkflowError)
})
test('agent concurrency bounded by semaphore (does not exceed maxConcurrency)', async () => {
let active = 0
let peak = 0
const { hooks } = buildCtx({
runner: async () => {
active++
peak = Math.max(peak, active)
await new Promise(r => {
setTimeout(r, 5)
})
active--
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
})
await hooks.parallel(Array.from({ length: 32 }, () => () => hooks.agent('p')))
expect(peak).toBeLessThanOrEqual(maxConcurrency())
})
test('agentAdapterRegistry takes priority over agentRunner (dispatched to adapter by route)', async () => {
const called: string[] = []
const registry = new AgentAdapterRegistry()
.register({
id: 'ad',
capabilities: { structuredOutput: true },
async run() {
called.push('adapter')
return {
kind: 'ok',
output: 'from-adapter',
usage: { outputTokens: 1 },
}
},
})
.default('ad')
const { hooks } = buildCtx({
agentAdapterRegistry: registry,
runner: async () => {
called.push('runner')
return { kind: 'ok', output: 'from-runner', usage: { outputTokens: 1 } }
},
})
expect(await hooks.agent('x')).toBe('from-adapter')
expect(called).toEqual(['adapter'])
})
test('agentAdapterRegistry resolve throws → agent rethrows (workflow failed)', async () => {
const registry = new AgentAdapterRegistry().default('missing') // not registered
const { hooks } = buildCtx({
agentAdapterRegistry: registry,
runner: async () => ({
kind: 'ok',
output: 'x',
usage: { outputTokens: 1 },
}),
})
await expect(hooks.agent('x')).rejects.toThrow()
})
// service.kill(runId, agentId) bridge: hooks.agent must inject taskRegistrar's
// registerAgentAbort/unregisterAgentAbort into adapterCtx (bound to the current runId).
// The backend puts the agentAbort controller into a Map based on this; service.kill aborts precisely by agentId.
test('agentAdapter ctx injects registerAgentAbort/unregisterAgentAbort (bound to runId, forwards to taskRegistrar)', async () => {
const registered: Array<{
runId: string
agentId: number
controller: AbortController
}> = []
const unregistered: Array<{ runId: string; agentId: number }> = []
// capture the ctx hooks pass to the adapter (verify register/unregister are injected and bound to runId)
let capturedCtx: {
registerAgentAbort?: (id: number, ac: AbortController) => void
unregisterAgentAbort?: (id: number) => void
agentId: number
runId: string
} | null = null
const registry = new AgentAdapterRegistry()
.register({
id: 'ad',
capabilities: { structuredOutput: true },
async run(_params, ctx) {
capturedCtx = ctx
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
})
.default('ad')
const { hooks } = buildCtx({
agentAdapterRegistry: registry,
registerAgentAbort: (runId, agentId, controller) =>
registered.push({ runId, agentId, controller }),
unregisterAgentAbort: (runId, agentId) =>
unregistered.push({ runId, agentId }),
})
await hooks.agent('x')
// ctx contains register/unregister (closure bound to runId='r1')
expect(capturedCtx).not.toBeNull()
expect(typeof capturedCtx!.registerAgentAbort).toBe('function')
expect(typeof capturedCtx!.unregisterAgentAbort).toBe('function')
// simulate backend call: the injected closure forwards (agentId, controller) to taskRegistrar,
// and auto-fills runId='r1' (backend does not need to know runId)
const ac = new AbortController()
capturedCtx!.registerAgentAbort!(7, ac)
capturedCtx!.unregisterAgentAbort!(7)
expect(registered).toEqual([{ runId: 'r1', agentId: 7, controller: ac }])
expect(unregistered).toEqual([{ runId: 'r1', agentId: 7 }])
})
test('taskRegistrar does not provide registerAgentAbort → adapterCtx also lacks it (hooks do not error)', async () => {
// without registerAgentAbort/unregisterAgentAbort overrides → buildCtx does not inject taskRegistrar either
// hooks skip via optional chaining; adapterCtx lacks these two fields
let capturedCtx: object | null = null
const registry = new AgentAdapterRegistry()
.register({
id: 'ad',
capabilities: { structuredOutput: true },
async run(_params, ctx) {
capturedCtx = ctx
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
})
.default('ad')
const { hooks } = buildCtx({ agentAdapterRegistry: registry })
await hooks.agent('x')
expect(capturedCtx).not.toBeNull()
expect(
(capturedCtx! as Record<string, unknown>).registerAgentAbort,
).toBeUndefined()
})

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import { expect, test } from 'bun:test'
import * as wf from '../index.js'
test('engine core API fully exported', () => {
expect(typeof wf.runWorkflow).toBe('function')
expect(typeof wf.parseScript).toBe('function')
expect(typeof wf.extractMeta).toBe('function')
expect(typeof wf.makeHooks).toBe('function')
expect(typeof wf.createEngineContext).toBe('function')
expect(typeof wf.createSharedResources).toBe('function')
})
test('ports / host API fully exported', () => {
expect(typeof wf.createHostHandle).toBe('function')
expect(typeof wf.isHostHandle).toBe('function')
expect(typeof wf.unwrapHostHandle).toBe('function')
})
test('persistence / structured output / named workflow / progress API fully exported', () => {
expect(typeof wf.createFileJournalStore).toBe('function')
expect(typeof wf.agentCallKey).toBe('function')
expect(typeof wf.validateAgainstSchema).toBe('function')
expect(typeof wf.resolveNamedWorkflow).toBe('function')
expect(typeof wf.listNamedWorkflows).toBe('function')
expect(typeof wf.createBufferingEmitter).toBe('function')
expect(typeof wf.createProgressEmitter).toBe('function')
})
test('concurrency / budget / error classes fully exported', () => {
expect(typeof wf.Semaphore).toBe('function')
expect(typeof wf.maxConcurrency).toBe('function')
expect(typeof wf.clampMaxConcurrency).toBe('function')
expect(typeof wf.Budget).toBe('function')
expect(typeof wf.BudgetExhaustedError).toBe('function')
expect(typeof wf.WorkflowError).toBe('function')
expect(typeof wf.WorkflowAbortedError).toBe('function')
expect(typeof wf.ScriptError).toBe('function')
})
test('tool descriptor and input schema exported', () => {
expect(typeof wf.createWorkflowTool).toBe('function')
expect(typeof wf.workflowInputSchema).toBe('object')
expect(wf.WORKFLOW_TOOL_NAME).toBe('Workflow')
})
test('engine constant values are stable', () => {
expect(wf.WORKFLOW_DIR_NAME).toBe('.claude/workflows')
expect(wf.WORKFLOW_RUNS_DIR).toBe('.claude/workflow-runs')
expect(wf.WORKFLOW_TOOL_NAME).toBe('Workflow')
expect(wf.MAX_TOTAL_AGENTS).toBe(1000)
expect(wf.MAX_ITEMS_PER_CALL).toBe(4096)
expect(wf.MAX_CONCURRENCY_CAP).toBe(16)
expect(wf.DEFAULT_MAX_CONCURRENCY).toBe(3)
expect(wf.WORKFLOW_SCRIPT_EXTENSIONS).toEqual(['.ts', '.js', '.mjs'])
})
test('createWorkflowTool returns complete descriptor shape', () => {
const tool = wf.createWorkflowTool({
agentRunner: { runAgentToResult: async () => ({ kind: 'dead' }) },
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete() {},
fail() {},
kill() {},
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: wf.createHostHandle(null),
cwd: '/tmp',
budgetTotal: null,
}),
})
expect(tool.name).toBe('Workflow')
expect(tool.isEnabled()).toBe(true)
expect(tool.isReadOnly({})).toBe(false)
expect(typeof tool.call).toBe('function')
expect(typeof tool.description).toBe('function')
expect(typeof tool.prompt).toBe('function')
expect(typeof tool.renderToolUseMessage).toBe('function')
expect(typeof tool.mapToolResultToToolResultBlockParam).toBe('function')
})

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/**
* Integration test: runs the canonical workflow script (canonical pattern from the Workflow tool definition:
* pipeline without barrier + parallel barrier + agent(schema) + phase) with a faithful mock adapter.
* Verifies the engine is semantically compatible with real workflow scripts.
*/
import { expect, test } from 'bun:test'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { runWorkflow } from '../engine/runWorkflow.js'
import { createFileJournalStore } from '../engine/journal.js'
import { createHostHandle, type WorkflowPorts } from '../ports.js'
import { createBufferingEmitter } from '../progress/events.js'
import type { AgentRunParams, AgentRunResult, ProgressEvent } from '../types.js'
function canonicalPorts(runsDir: string): {
ports: WorkflowPorts
events: ProgressEvent[]
agentCalls: AgentRunParams[]
} {
const { emitter, events } = createBufferingEmitter()
const agentCalls: AgentRunParams[] = []
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async (
params: AgentRunParams,
): Promise<AgentRunResult> => {
agentCalls.push(params)
const p = params.prompt
if (p.startsWith('review-')) {
return {
kind: 'ok',
output: { findings: [{ title: `${p}-finding`, file: 'a.ts' }] },
usage: { outputTokens: 5 },
}
}
if (p.startsWith('verify')) {
return {
kind: 'ok',
output: { isReal: true },
usage: { outputTokens: 2 },
}
}
return { kind: 'dead' }
},
},
progressEmitter: emitter,
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(runsDir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: runsDir,
budgetTotal: null,
}),
}
return { ports, events, agentCalls }
}
// canonical review pattern (pipeline→parallel→verify→synthesize), verbatim from the Workflow tool definition.
const CANONICAL_REVIEW_SCRIPT = `
export const meta = {
name: 'review-changes',
description: 'Review changed files across dimensions, verify each finding',
phases: [{ title: 'Review' }, { title: 'Verify' }],
}
const DIMENSIONS = [
{ key: 'bugs', prompt: 'review-bugs' },
{ key: 'perf', prompt: 'review-perf' },
]
const FINDINGS_SCHEMA = { type: 'object' }
const VERDICT_SCHEMA = { type: 'object' }
phase('Review')
const results = await pipeline(
DIMENSIONS,
d => agent(d.prompt, { label: 'review:' + d.key, phase: 'Review', schema: FINDINGS_SCHEMA }),
review => parallel(
review.findings.map(f => () =>
agent('verify: ' + f.title, { label: 'verify:' + f.file, phase: 'Verify', schema: VERDICT_SCHEMA })
.then(v => ({ ...f, verdict: v }))
)
)
)
const all = results.flat().filter(Boolean)
const confirmed = all.filter(f => f.verdict && f.verdict.isReal)
return { confirmed, total: all.length }
`
test('canonical review script end-to-end compatibility', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-int-'))
try {
const { ports, events, agentCalls } = canonicalPorts(dir)
const result = await runWorkflow({
script: CANONICAL_REVIEW_SCRIPT,
runId: 'int-1',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('completed')
const ret = result.returnValue as { confirmed: unknown[]; total: number }
// 2 dimensions × 1 finding, all isReal=true → confirmed=2, total=2
expect(ret.total).toBe(2)
expect(ret.confirmed).toHaveLength(2)
// 2 review agents + 2 verify agents = 4
expect(agentCalls).toHaveLength(4)
expect(agentCalls.filter(c => c.prompt.startsWith('review-'))).toHaveLength(
2,
)
expect(agentCalls.filter(c => c.prompt.startsWith('verify'))).toHaveLength(
2,
)
// progress events: run_started/done + phase Review/Verify + agent started/done
expect(
events.some(
e => e.type === 'run_started' && e.workflowName === 'review-changes',
),
).toBe(true)
expect(
events.some(e => e.type === 'run_done' && e.status === 'completed'),
).toBe(true)
// script explicitly calls phase('Review') once; the verify agent's phase:'Verify' is a display label, does not emit phase_started
expect(
events.filter(e => e.type === 'phase_started' && e.phase === 'Review'),
).toHaveLength(1)
expect(events.filter(e => e.type === 'agent_started')).toHaveLength(4)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('loop-until-dry pattern: two consecutive rounds with no new findings converges', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-int-'))
try {
let round = 0
const { emitter, events } = createBufferingEmitter()
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async (
p: AgentRunParams,
): Promise<AgentRunResult> => {
round++
// rounds 1-2 return findings, round 3+ returns empty → converges
const found = round <= 2 ? [{ b: round }] : []
return {
kind: 'ok',
output: { bugs: found },
usage: { outputTokens: 1 },
}
},
},
progressEmitter: emitter,
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(dir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
const script = `
const seen = []
const confirmed = []
let dry = 0
while (dry < 2) {
const found = (await agent('find bugs')).bugs
const fresh = found.filter(b => !seen.includes(b.b))
if (fresh.length === 0) { dry++; continue }
dry = 0
for (const b of fresh) seen.push(b.b)
confirmed.push(...fresh)
}
return { confirmed }
`
const result = await runWorkflow({
script,
runId: 'int-2',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('completed')
const ret = result.returnValue as { confirmed: { b: number }[] }
// round1 finds {b:1}, round2 finds {b:2} (fresh, since seen=[1]), round3 found{b:3}?
// mock counts by round: round1→{b:1}, round2→{b:2}, round3→[] (found empty)
// but round2 found=[{b:2}], seen=[1], fresh=[{b:2}] → confirmed=[{b:1},{b:2}], dry=0
// round3 found=[] → fresh=[] → dry=1; round4 found=[] → dry=2 → exits
expect(ret.confirmed).toHaveLength(2)
expect(
events.some(e => e.type === 'run_done' && e.status === 'completed'),
).toBe(true)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('resume compatibility: second run hits journal, agents do not re-run', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-int-'))
try {
let calls = 0
const makePorts = (): WorkflowPorts => ({
agentRunner: {
runAgentToResult: async () => {
calls++
return { kind: 'ok', output: 'live', usage: { outputTokens: 1 } }
},
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(dir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
})
const script = `
phase('A')
const a = await agent('do-a')
const b = await agent('do-b')
return { a, b }
`
// first run: 2 agents run live
const first = await runWorkflow({
script,
runId: 'int-3',
ports: makePorts(),
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(first.status).toBe('completed')
expect(calls).toBe(2)
// resume same runId: journal hit, no re-run
calls = 0
const resumed = await runWorkflow({
script,
runId: 'int-3',
ports: makePorts(),
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
resume: true,
})
expect(resumed.status).toBe('completed')
expect(calls).toBe(0)
} finally {
await rm(dir, { recursive: true, force: true })
}
})

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import { expect, test } from 'bun:test'
import { mkdtemp, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { agentCallKey, createFileJournalStore } from '../engine/journal.js'
import type { AgentRunParams } from '../types.js'
const base: AgentRunParams = { prompt: 'do something' }
test('agentCallKey stable for same prompt+params', () => {
expect(agentCallKey('p', base)).toBe(agentCallKey('p', base))
})
test('agentCallKey varies with prompt', () => {
expect(agentCallKey('p1', base)).not.toBe(agentCallKey('p2', base))
})
test('agentCallKey ignores display-only fields label/phase', () => {
const a = agentCallKey('p', { ...base, label: 'A', phase: 'ph1' })
const b = agentCallKey('p', { ...base, label: 'B', phase: 'ph2' })
expect(a).toBe(b)
})
test('FileJournalStore append → read preserves order, truncate clears', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-journal-'))
try {
const store = createFileJournalStore(dir)
const e1 = {
key: 'k1',
seq: 0,
result: { kind: 'ok' as const, output: 'x', usage: { outputTokens: 1 } },
}
const e2 = { key: 'k2', seq: 1, result: { kind: 'dead' as const } }
await store.append('run-1', e1)
await store.append('run-1', e2)
const got = await store.read('run-1')
expect(got).toHaveLength(2)
expect(got[0]!.key).toBe('k1')
expect(got[1]!.result.kind).toBe('dead')
await store.truncate('run-1')
expect(await store.read('run-1')).toEqual([])
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('FileJournalStore read sorts by seq — resume stable when parallel completion order ≠ call order', async () => {
// Concurrent completion order is non-deterministic: append-to-disk = completion order; on resume, key matching uses call order.
// Without seq sorting → different runs have different key orders → nearly all keys mismatch →
// everything re-runs, journal becomes useless. Fix: read() re-orders by ascending seq before returning.
const dir = await mkdtemp(join(tmpdir(), 'wf-journal-sort-'))
try {
const store = createFileJournalStore(dir)
await store.append('r1', {
key: 'late',
seq: 2,
result: { kind: 'ok', output: 'late', usage: { outputTokens: 1 } },
})
await store.append('r1', {
key: 'first',
seq: 0,
result: { kind: 'ok', output: 'first', usage: { outputTokens: 1 } },
})
await store.append('r1', {
key: 'mid',
seq: 1,
result: { kind: 'ok', output: 'mid', usage: { outputTokens: 1 } },
})
const got = await store.read('r1')
expect(got.map(e => e.key)).toEqual(['first', 'mid', 'late'])
expect(got.map(e => e.seq)).toEqual([0, 1, 2])
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('agentCallKey varies with schema', () => {
const k0 = agentCallKey('p', { prompt: 'p' })
const k1 = agentCallKey('p', { prompt: 'p', schema: { type: 'object' } })
const k2 = agentCallKey('p', { prompt: 'p', schema: { type: 'array' } })
expect(k1).not.toBe(k0)
expect(k1).not.toBe(k2)
})
test('agentCallKey varies with model', () => {
expect(agentCallKey('p', { prompt: 'p', model: 'sonnet' })).not.toBe(
agentCallKey('p', { prompt: 'p', model: 'opus' }),
)
})
test('agentCallKey stable across params field order (canonical sort)', () => {
const a = agentCallKey('p', {
prompt: 'p',
model: 'm',
schema: { type: 'object' },
})
const b = agentCallKey('p', {
schema: { type: 'object' },
prompt: 'p',
model: 'm',
})
expect(a).toBe(b)
})
test('FileJournalStore read for non-existent run → []', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-journal-'))
try {
const store = createFileJournalStore(dir)
expect(await store.read('never-existed')).toEqual([])
} finally {
await rm(dir, { recursive: true, force: true })
}
})

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import { expect, test } from 'bun:test'
import { mkdtemp, rm, writeFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import {
listNamedWorkflows,
resolveNamedWorkflow,
} from '../engine/namedWorkflows.js'
test('resolves named workflow by extension priority', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-named-'))
try {
await writeFile(
join(dir, 'a.ts'),
'export const meta = { name: "a", description: "d" }\nreturn 1',
)
await writeFile(join(dir, 'b.js'), 'return 2')
await writeFile(join(dir, 'c.mjs'), 'return 3')
await writeFile(join(dir, 'ignore.md'), '# not a workflow')
const a = await resolveNamedWorkflow(dir, 'a')
expect(a?.path.endsWith('a.ts')).toBe(true)
expect(a?.content).toContain('meta')
expect(await resolveNamedWorkflow(dir, 'missing')).toBeNull()
const names = await listNamedWorkflows(dir)
expect(names).toEqual(['a', 'b', 'c']) // excludes .md
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('listNamedWorkflows returns empty array for non-existent directory', async () => {
expect(
await listNamedWorkflows(join(tmpdir(), 'wf-nope-' + Date.now())),
).toEqual([])
})
test('resolveNamedWorkflow falls back to .js/.mjs when .ts is missing', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-named-'))
try {
await writeFile(join(dir, 'onlyjs.js'), 'return 1')
await writeFile(join(dir, 'onlymjs.mjs'), 'return 2')
expect(
(await resolveNamedWorkflow(dir, 'onlyjs'))?.path.endsWith('onlyjs.js'),
).toBe(true)
expect(
(await resolveNamedWorkflow(dir, 'onlymjs'))?.path.endsWith(
'onlymjs.mjs',
),
).toBe(true)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('listNamedWorkflows returns sorted names', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-named-'))
try {
await writeFile(join(dir, 'zeta.ts'), 'return 1')
await writeFile(join(dir, 'alpha.js'), 'return 2')
await writeFile(join(dir, 'mid.mjs'), 'return 3')
expect(await listNamedWorkflows(dir)).toEqual(['alpha', 'mid', 'zeta'])
} finally {
await rm(dir, { recursive: true, force: true })
}
})

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import { expect, test } from 'bun:test'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { containsPath, sanitizeWorkflowName } from '../engine/paths.js'
test('containsPath: target equals base → true', () => {
const base = join(tmpdir(), 'a')
expect(containsPath(base, base)).toBe(true)
})
test('containsPath: target inside base → true', () => {
const base = join(tmpdir(), 'a')
const target = join(base, 'b', 'c.ts')
expect(containsPath(base, target)).toBe(true)
})
test('containsPath: target outside base (prefix false positive) → false', () => {
// /tmp/foobar should not be considered a subpath of /tmp/foo
const base = join(tmpdir(), 'foo')
const target = join(tmpdir(), 'foobar', 'x.ts')
expect(containsPath(base, target)).toBe(false)
})
test('containsPath: target using .. out of bounds → false', () => {
const base = join(tmpdir(), 'a', 'b')
const target = join(base, '..', 'outside.ts')
expect(containsPath(base, target)).toBe(false)
})
test('containsPath: relative target resolved against base', () => {
const base = join(tmpdir(), 'a')
expect(containsPath(base, 'sub/file.ts')).toBe(true)
expect(containsPath(base, '../b/file.ts')).toBe(false)
})
test('sanitizeWorkflowName: valid identifier → original value', () => {
expect(sanitizeWorkflowName('release')).toBe('release')
expect(sanitizeWorkflowName('my-workflow')).toBe('my-workflow')
expect(sanitizeWorkflowName('my_workflow_2')).toBe('my_workflow_2')
})
test('sanitizeWorkflowName: contains path separators → null', () => {
expect(sanitizeWorkflowName('foo/bar')).toBeNull()
expect(sanitizeWorkflowName('foo\\bar')).toBeNull()
expect(sanitizeWorkflowName('/abs/path')).toBeNull()
})
test('sanitizeWorkflowName: . / .. / empty → null', () => {
expect(sanitizeWorkflowName('.')).toBeNull()
expect(sanitizeWorkflowName('..')).toBeNull()
expect(sanitizeWorkflowName('')).toBeNull()
})
test('sanitizeWorkflowName: contains null byte → null', () => {
expect(sanitizeWorkflowName('evil\0.ts')).toBeNull()
})

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import { expect, test } from 'bun:test'
import { mkdtemp, readFile, rm } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { persistInlineScript } from '../tool/persistInline.js'
test('persists to <cwd>/.claude/workflow-runs/<runId>/script.js and returns path', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-pi-'))
try {
const path = await persistInlineScript('return 1', 'r1', dir)
expect(path).toBe(join(dir, '.claude', 'workflow-runs', 'r1', 'script.js'))
expect(await readFile(path, 'utf-8')).toBe('return 1')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('same runId repeated writes overwrite (mkdir idempotent, no error)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-pi-'))
try {
await persistInlineScript('first', 'r2', dir)
const path = await persistInlineScript('second', 'r2', dir)
expect(await readFile(path, 'utf-8')).toBe('second')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('different runId do not interfere (independent subdirectories)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-pi-'))
try {
const p1 = await persistInlineScript('a', 'run-a', dir)
const p2 = await persistInlineScript('b', 'run-b', dir)
expect(p1).not.toBe(p2)
expect(await readFile(p1, 'utf-8')).toBe('a')
expect(await readFile(p2, 'utf-8')).toBe('b')
} finally {
await rm(dir, { recursive: true, force: true })
}
})

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import { expect, test } from 'bun:test'
import { createHostHandle, isHostHandle, unwrapHostHandle } from '../ports.js'
test('createHostHandle wraps any bundle and is opaque externally', () => {
const bundle = { secret: 'ctx', nested: { a: 1 } }
const handle = createHostHandle(bundle)
expect(isHostHandle(handle)).toBe(true)
// bundle is not exposed externally — handle only has a symbol marker
expect(Object.keys(handle)).toHaveLength(0)
})
test('plain object is not a HostHandle', () => {
expect(isHostHandle({} as unknown)).toBe(false)
expect(isHostHandle(null)).toBe(false)
})
test('ports object satisfies the minimal shape', () => {
// compile-time shape validation: the assignment below passing means the ports contract is self-consistent
const noop = (): void => {}
const ports = {
agentRunner: { runAgentToResult: noop },
progressEmitter: { emit: noop },
taskRegistrar: {
register: () => ({
runId: 'run-1',
signal: new AbortController().signal,
}),
complete: noop,
fail: noop,
kill: noop,
pendingAction: () => null,
},
journalStore: {
read: async () => [],
append: async () => {},
truncate: async () => {},
},
permissionGate: { isAborted: () => false },
logger: { debug: noop, event: noop },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: '/tmp',
budgetTotal: null,
toolUseId: 'tu-1',
}),
}
expect(ports.taskRegistrar.register().runId).toBe('run-1')
expect(ports.hostFactory().toolUseId).toBe('tu-1')
})
test('unwrapHostHandle retrieves the original bundle (same reference)', () => {
const bundle = { secret: 'ctx', nested: { a: 1 } }
const handle = createHostHandle(bundle)
expect(unwrapHostHandle(handle)).toBe(bundle)
})
test('createHostHandle(null) is opaque and unwraps to null', () => {
const handle = createHostHandle(null)
expect(isHostHandle(handle)).toBe(true)
expect(unwrapHostHandle(handle)).toBeNull()
})

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import { expect, test } from 'bun:test'
import { mkdtemp, mkdir, rm, writeFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { runWorkflow } from '../engine/runWorkflow.js'
import { agentCallKey, createFileJournalStore } from '../engine/journal.js'
import { createHostHandle, type WorkflowPorts } from '../ports.js'
import type { AgentRunParams, AgentRunResult, ProgressEvent } from '../types.js'
function portsWith(
runsDir: string,
results: Map<string, AgentRunResult>,
): WorkflowPorts {
return {
agentRunner: {
runAgentToResult: async (p: AgentRunParams) =>
results.get(p.prompt) ?? { kind: 'dead' },
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(runsDir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: runsDir,
budgetTotal: null,
}),
}
}
function portsWithEvents(
runsDir: string,
results: Map<string, AgentRunResult>,
): { ports: WorkflowPorts; events: ProgressEvent[] } {
const events: ProgressEvent[] = []
return {
events,
ports: {
agentRunner: {
runAgentToResult: async (p: AgentRunParams) =>
results.get(p.prompt) ?? { kind: 'dead' },
},
progressEmitter: { emit: e => void events.push(e) },
taskRegistrar: {
register: () => ({
runId: 'r',
signal: new AbortController().signal,
}),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(runsDir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: runsDir,
budgetTotal: null,
}),
},
}
}
test('end-to-end: script returns agent result, status completed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const ports = portsWith(
dir,
new Map([
['compute', { kind: 'ok', output: '42', usage: { outputTokens: 3 } }],
]),
)
const result = await runWorkflow({
script: `export const meta = { name: 't', description: 'd' }\nreturn agent('compute')`,
runId: 'run-1',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('completed')
expect(result.returnValue).toBe('42')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('script syntax error → failed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const ports = portsWith(dir, new Map())
const result = await runWorkflow({
script: `export const meta = { name: 't', description: 'd' }\nreturn ((`,
runId: 'run-2',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('failed')
expect(result.error).toBeTruthy()
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('resume: journal hit skips runner call', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
let called = 0
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async () => {
called++
return { kind: 'ok', output: 'live', usage: { outputTokens: 1 } }
},
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(dir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
const key = agentCallKey('compute', { prompt: 'compute' })
await ports.journalStore.append('run-3', {
key,
seq: 0,
result: { kind: 'ok', output: 'cached', usage: { outputTokens: 1 } },
})
const result = await runWorkflow({
script: `return agent('compute')`,
runId: 'run-3',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
resume: true,
})
expect(result.status).toBe('completed')
expect(result.returnValue).toBe('cached')
expect(called).toBe(0)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('abort → killed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const ports = portsWith(
dir,
new Map([['x', { kind: 'ok', output: '1', usage: { outputTokens: 1 } }]]),
)
const ac = new AbortController()
ac.abort()
const result = await runWorkflow({
script: `return agent('x')`,
runId: 'run-4',
ports,
host: createHostHandle(null),
signal: ac.signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('killed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('workflow() nesting (one level) shares counts', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
await mkdir(join(dir, '.claude', 'workflows'), { recursive: true })
await writeFile(
join(dir, '.claude', 'workflows', 'child.ts'),
`return agent('child')\n// child workflow`,
)
const ports = portsWith(
dir,
new Map([
[
'child',
{ kind: 'ok', output: 'child-out', usage: { outputTokens: 1 } },
],
]),
)
const result = await runWorkflow({
script: `return workflow('child')`,
runId: 'run-5',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('completed')
expect(result.returnValue).toBe('child-out')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
// ---- boundary and events ----
test('scriptChanged=true → truncate journal and run all live', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
let called = 0
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async () => {
called++
return { kind: 'ok', output: 'live', usage: { outputTokens: 1 } }
},
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(dir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
const key = agentCallKey('compute', { prompt: 'compute' })
await ports.journalStore.append('run-chg', {
key,
seq: 0,
result: { kind: 'ok', output: 'cached', usage: { outputTokens: 1 } },
})
const result = await runWorkflow({
script: `return agent('compute')`,
runId: 'run-chg',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
resume: true,
scriptChanged: true,
})
expect(result.status).toBe('completed')
expect(result.returnValue).toBe('live')
expect(called).toBe(1)
// truncate cleared the old cached journal, live agent appends a new entry
const final = await ports.journalStore.read('run-chg')
expect(final).toHaveLength(1)
expect((final[0]!.result as { output: string }).output).toBe('live')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('script runtime throw (non-syntax error) → failed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const ports = portsWith(dir, new Map())
const result = await runWorkflow({
script: `throw new Error('boom at runtime')`,
runId: 'run-throw',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('failed')
expect(result.error).toMatch(/boom/)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('emits run_started (with workflowName) and run_done events', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const { ports, events } = portsWithEvents(
dir,
new Map([['x', { kind: 'ok', output: '1', usage: { outputTokens: 1 } }]]),
)
await runWorkflow({
script: `return agent('x')`,
runId: 'run-ev',
workflowName: 'my-wf',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(
events.some(e => e.type === 'run_started' && e.workflowName === 'my-wf'),
).toBe(true)
expect(
events.some(e => e.type === 'run_done' && e.status === 'completed'),
).toBe(true)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
// Emit phase_done for currentPhase before terminal state: hook.phase only emits the previous phase's done on switch,
// the last phase has no subsequent switch → the UI left panel would show running forever. Verify all three paths re-emit.
test('re-emit phase_done for currentPhase before terminal state (completed path)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const { ports, events } = portsWithEvents(
dir,
new Map([['x', { kind: 'ok', output: '1', usage: { outputTokens: 1 } }]]),
)
await runWorkflow({
script: `phase('Review')\nreturn agent('x')`,
runId: 'run-phase-done',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
// Both phase_started and phase_done for Review should be present (done from re-emit before terminal)
expect(
events.some(e => e.type === 'phase_started' && e.phase === 'Review'),
).toBe(true)
expect(
events.some(e => e.type === 'phase_done' && e.phase === 'Review'),
).toBe(true)
// Order: phase_done must precede run_done (reducer is order-independent, but the event stream is clearer this way)
const lastPhaseDone = Math.max(
0,
...events.map((e, i) => (e.type === 'phase_done' ? i : -1)),
)
const runDoneIdx = events.findIndex(e => e.type === 'run_done')
expect(runDoneIdx).toBeGreaterThan(0)
expect(lastPhaseDone).toBeLessThan(runDoneIdx)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('re-emit phase_done for currentPhase before terminal state (killed path)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const { ports, events } = portsWithEvents(
dir,
new Map([['x', { kind: 'ok', output: '1', usage: { outputTokens: 1 } }]]),
)
const ac = new AbortController()
ac.abort()
await runWorkflow({
script: `phase('Run')\nreturn agent('x')`,
runId: 'run-kill-phase',
ports,
host: createHostHandle(null),
signal: ac.signal,
cwd: dir,
budgetTotal: null,
})
expect(events.some(e => e.type === 'phase_done' && e.phase === 'Run')).toBe(
true,
)
expect(
events.some(e => e.type === 'run_done' && e.status === 'killed'),
).toBe(true)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('no phase() call → terminal does not re-emit phase_done (currentPhase is null)', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const { ports, events } = portsWithEvents(
dir,
new Map([['x', { kind: 'ok', output: '1', usage: { outputTokens: 1 } }]]),
)
await runWorkflow({
script: `return agent('x')`,
runId: 'run-no-phase',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
// No phase() → currentPhase is null → terminal does not re-emit phase_done
expect(events.some(e => e.type === 'phase_done')).toBe(false)
expect(events.some(e => e.type === 'phase_started')).toBe(false)
expect(
events.some(e => e.type === 'run_done' && e.status === 'completed'),
).toBe(true)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('derives workflowName from meta.name when not passed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const { ports, events } = portsWithEvents(dir, new Map())
await runWorkflow({
script: `export const meta = { name: 'from-meta', description: 'd' }\nreturn 1`,
runId: 'run-meta',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(
events.some(
e => e.type === 'run_started' && e.workflowName === 'from-meta',
),
).toBe(true)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('budgetTotal exhausted → failed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const ports = portsWith(
dir,
new Map([
['a', { kind: 'ok', output: '1', usage: { outputTokens: 5 } }],
['b', { kind: 'ok', output: '2', usage: { outputTokens: 5 } }],
]),
)
const result = await runWorkflow({
script: `await agent('a')\nreturn agent('b')`,
runId: 'run-budget',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: 5,
})
expect(result.status).toBe('failed')
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('maxConcurrency passthrough: parallel agents bounded by run-level concurrency slots', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
let active = 0
let peak = 0
const ports: WorkflowPorts = {
agentRunner: {
runAgentToResult: async () => {
active++
peak = Math.max(peak, active)
await new Promise(r => {
setTimeout(r, 8)
})
active--
return { kind: 'ok', output: 'x', usage: { outputTokens: 1 } }
},
},
progressEmitter: { emit: () => {} },
taskRegistrar: {
register: () => ({ runId: 'r', signal: new AbortController().signal }),
complete: () => {},
fail: () => {},
kill: () => {},
pendingAction: () => null,
},
journalStore: createFileJournalStore(dir),
permissionGate: { isAborted: () => false },
logger: { debug: () => {}, event: () => {} },
hostFactory: () => ({
handle: createHostHandle(null),
cwd: dir,
budgetTotal: null,
}),
}
const result = await runWorkflow({
script: `return parallel(Array.from({length: 8}, () => () => agent('p')))`,
runId: 'run-mc',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
maxConcurrency: 2,
})
expect(result.status).toBe('completed')
expect(peak).toBeLessThanOrEqual(2)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('workflow() references a syntactically broken sub-script → failed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
await mkdir(join(dir, '.claude', 'workflows'), { recursive: true })
await writeFile(join(dir, '.claude', 'workflows', 'broken.ts'), `return ((`)
const ports = portsWith(dir, new Map())
const result = await runWorkflow({
script: `return workflow('broken')`,
runId: 'run-sub-err',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('failed')
expect(result.error).toMatch(/Sub-workflow|script error/i)
} finally {
await rm(dir, { recursive: true, force: true })
}
})
test('workflow() references a non-existent name → failed', async () => {
const dir = await mkdtemp(join(tmpdir(), 'wf-run-'))
try {
const ports = portsWith(dir, new Map())
const result = await runWorkflow({
script: `return workflow('ghost')`,
runId: 'run-sub-missing',
ports,
host: createHostHandle(null),
signal: new AbortController().signal,
cwd: dir,
budgetTotal: null,
})
expect(result.status).toBe('failed')
expect(result.error).toMatch(/Sub-workflow|not found/i)
} finally {
await rm(dir, { recursive: true, force: true })
}
})

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@@ -0,0 +1,62 @@
import { expect, test } from 'bun:test'
import { workflowInputSchema } from '../tool/schema.js'
test('empty object passes (all fields optional)', () => {
expect(workflowInputSchema.safeParse({}).success).toBe(true)
})
test('all known fields can be filled', () => {
const r = workflowInputSchema.safeParse({
script: 'return 1',
name: 'release',
scriptPath: '/abs/x.ts',
args: { n: 1 },
resumeFromRunId: 'run-1',
description: 'do thing',
title: 'T',
maxConcurrency: 3,
})
expect(r.success).toBe(true)
})
test('args accepts any JSON value (object/array/string/number/boolean/null)', () => {
for (const args of [{ a: 1 }, [1, 2], 's', 42, true, null]) {
expect(workflowInputSchema.safeParse({ args }).success).toBe(true)
}
})
test('type errors rejected (script/name/scriptPath not strings)', () => {
expect(workflowInputSchema.safeParse({ script: 123 }).success).toBe(false)
expect(workflowInputSchema.safeParse({ name: 42 }).success).toBe(false)
expect(workflowInputSchema.safeParse({ scriptPath: {} }).success).toBe(false)
})
test('resumeFromRunId/description/title must be strings', () => {
expect(workflowInputSchema.safeParse({ resumeFromRunId: 1 }).success).toBe(
false,
)
expect(workflowInputSchema.safeParse({ description: 1 }).success).toBe(false)
expect(workflowInputSchema.safeParse({ title: 1 }).success).toBe(false)
})
test('unknown fields are stripped (zod default non-strict, safeParse succeeds)', () => {
const r = workflowInputSchema.safeParse({ script: 'x', extra: 1 })
expect(r.success).toBe(true)
})
test('maxConcurrency: integers 1-16 valid; 0/17/decimal/non-number rejected', () => {
for (const n of [1, 3, 5, 16]) {
expect(workflowInputSchema.safeParse({ maxConcurrency: n }).success).toBe(
true,
)
}
for (const bad of [0, -1, 17, 100, 1.5, '3', NaN]) {
expect(workflowInputSchema.safeParse({ maxConcurrency: bad }).success).toBe(
false,
)
}
})
test('maxConcurrency optional (safeParse succeeds when omitted)', () => {
expect(workflowInputSchema.safeParse({ script: 'x' }).success).toBe(true)
})

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import { expect, test } from 'bun:test'
import {
ScriptError,
extractMeta,
parseScript,
type WorkflowHooks,
} from '../engine/script.js'
const stubHooks: WorkflowHooks = {
agent: async () => 'agent-result',
parallel: async thunks =>
Promise.all(
thunks.map(async t => {
try {
return await t()
} catch {
return null
}
}),
),
pipeline: async () => [],
phase: () => {},
log: () => {},
workflow: async () => null,
}
test('extractMeta extracts plain literals and strips the statement', () => {
const src = `export const meta = { name: 'x', description: 'y' }\nreturn 1`
const { meta, body } = extractMeta(src)
expect(meta?.name).toBe('x')
expect(meta?.description).toBe('y')
expect(body).not.toContain('export const meta')
expect(body).toContain('return 1')
})
test('extractMeta returns null when no meta and body unchanged', () => {
const src = `return 42`
const { meta, body } = extractMeta(src)
expect(meta).toBeNull()
expect(body).toBe(src)
})
test('extractMeta rejects non-plain literals (variable references)', () => {
const src = `const x = 1\nexport const meta = { name: 'x', description: y }\nreturn 1`
expect(() => extractMeta(src)).toThrow(ScriptError)
})
test('parseScript executes top-level return of body', async () => {
const { execute } = parseScript(`return args.n + 1`)
const out = await execute(stubHooks, { n: 41 }, { total: null })
expect(out).toBe(42)
})
test('Date.now() in script throws non-determinism error', async () => {
const { execute } = parseScript(`return Date.now()`)
await expect(execute(stubHooks, {}, { total: null })).rejects.toThrow(
/Date\.now/,
)
})
test('Math.random() in script throws non-determinism error', async () => {
const { execute } = parseScript(`return Math.random()`)
await expect(execute(stubHooks, {}, { total: null })).rejects.toThrow(
/Math\.random/,
)
})
test('no-arg new Date() throws, but new Date(arg) is allowed', async () => {
const bad = parseScript(`return new Date()`)
await expect(bad.execute(stubHooks, {}, { total: null })).rejects.toThrow(
/new Date/,
)
const good = parseScript(
`return new Date('2020-06-12T00:00:00Z').getUTCFullYear()`,
)
await expect(good.execute(stubHooks, {}, { total: null })).resolves.toBe(2020)
})
// ---- meta validation error branches and nesting ----
test('extractMeta meta is array → ScriptError', () => {
expect(() => extractMeta('export const meta = [1, 2]\nreturn 1')).toThrow(
ScriptError,
)
})
test('extractMeta meta missing name → ScriptError', () => {
expect(() =>
extractMeta('export const meta = { description: "d" }\nreturn 1'),
).toThrow(ScriptError)
})
test('extractMeta meta missing description → ScriptError', () => {
expect(() =>
extractMeta('export const meta = { name: "n" }\nreturn 1'),
).toThrow(ScriptError)
})
test('extractMeta meta unclosed braces → ScriptError', () => {
expect(() =>
extractMeta('export const meta = { name: "n", description: "d"\nreturn 1'),
).toThrow(ScriptError)
})
test('extractMeta supports nested objects (phases array)', () => {
const src = `export const meta = { name: 'x', description: 'y', phases: [{ title: 'A' }, { title: 'B' }] }\nreturn 1`
const { meta } = extractMeta(src)
expect(meta?.name).toBe('x')
expect(meta?.phases).toHaveLength(2)
expect(meta?.phases?.[0]?.title).toBe('A')
expect(meta?.phases?.[1]?.title).toBe('B')
})
test('parseScript syntax error → ScriptError', () => {
expect(() => parseScript('return ((')).toThrow(ScriptError)
})
test('parseScript detects import → guided ScriptError (not a generic syntax error)', () => {
expect(() =>
parseScript(
`import { foo } from 'bar'\nexport const meta = { name: 'n', description: 'd' }\nreturn foo()`,
),
).toThrow(ScriptError)
expect(() =>
parseScript(
`import { foo } from 'bar'\nexport const meta = { name: 'n', description: 'd' }\nreturn foo()`,
),
).toThrow(/import is not supported/)
})
test('parseScript detects extra export beyond meta → guided ScriptError', () => {
expect(() =>
parseScript(
`export const meta = { name: 'n', description: 'd' }\nexport const X = 1\nreturn X`,
),
).toThrow(ScriptError)
expect(() =>
parseScript(
`export const meta = { name: 'n', description: 'd' }\nexport const X = 1\nreturn X`,
),
).toThrow(/allow only one export const meta/)
})
test('parseScript does not misfire on normal plain JS scripts (no import / no extra export)', () => {
const { execute } = parseScript(
`export const meta = { name: 'n', description: 'd' }\nconst r = await agent('hi')\nreturn r`,
)
expect(typeof execute).toBe('function')
})
test('parseScript detects dynamic import(...) → guided ScriptError (sandbox anti-escape)', () => {
expect(() =>
parseScript(
`const cp = await import('node:child_process')\nreturn cp.execSync('id').toString()`,
),
).toThrow(ScriptError)
expect(() =>
parseScript(`const cp = await import('node:child_process')\nreturn cp`),
).toThrow(/import/)
})
test('parseScript does not misfire when a line contains the import string literal (e.g. prompt contains "import")', () => {
// import inside a string should not be caught by the static regex — prompt may contain the word "import"
const { execute } = parseScript(
`export const meta = { name: 'n', description: 'd' }\nconst r = await agent('please import this module')\nreturn r`,
)
expect(typeof execute).toBe('function')
})

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@@ -0,0 +1,40 @@
import { expect, test } from 'bun:test'
import { validateAgainstSchema } from '../engine/structuredOutput.js'
const schema = {
type: 'object',
required: ['name', 'count'],
properties: {
name: { type: 'string' },
count: { type: 'number' },
},
additionalProperties: false,
}
test('valid object passes', () => {
const { valid, errors } = validateAgainstSchema(
{ name: 'a', count: 1 },
schema,
)
expect(valid).toBe(true)
expect(errors).toEqual([])
})
test('missing field fails', () => {
const { valid, errors } = validateAgainstSchema({ name: 'a' }, schema)
expect(valid).toBe(false)
expect(errors.length).toBeGreaterThan(0)
})
test('type error fails', () => {
const { valid } = validateAgainstSchema({ name: 'a', count: 'x' }, schema)
expect(valid).toBe(false)
})
test('same schema reuses cache', () => {
validateAgainstSchema({ name: 'a', count: 1 }, schema)
// second use of the same schema object should hit cache (not throwing is enough)
expect(validateAgainstSchema({ name: 'b', count: 2 }, schema).valid).toBe(
true,
)
})

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@@ -0,0 +1,52 @@
import { expect, test } from 'bun:test'
// Directly construct type shapes to verify JSON round-trip (core requirement for resume persistence).
test('AgentRunResult ok branch can JSON round-trip', () => {
const result = {
kind: 'ok' as const,
output: { confirmed: true },
usage: { outputTokens: 42 },
}
const round = JSON.parse(JSON.stringify(result))
expect(round).toEqual(result)
expect(round.kind).toBe('ok')
})
test('AgentRunResult skipped/dead branch can JSON round-trip', () => {
for (const kind of ['skipped', 'dead'] as const) {
const round = JSON.parse(JSON.stringify({ kind }))
expect(round.kind).toBe(kind)
}
})
// dead carries optional reason/detail: journal persistence preserves cause of death for post-hoc audit / panel display.
test('AgentRunResult dead with reason/detail can JSON round-trip', () => {
const dead = {
kind: 'dead' as const,
reason: 'no-structured-output' as const,
detail: 'finalize content has no StructuredOutput tool_use or JSON text',
}
const round = JSON.parse(JSON.stringify(dead))
expect(round).toEqual(dead)
expect(round.kind).toBe('dead')
expect(round.reason).toBe('no-structured-output')
})
// Backward compatible with old journals: reason/detail both optional, missing is still valid dead.
test('AgentRunResult dead without reason is still valid (backward compatible with old journal)', () => {
const legacy = { kind: 'dead' as const }
const round = JSON.parse(JSON.stringify(legacy))
expect(round.kind).toBe('dead')
expect(round.reason).toBeUndefined()
expect(round.detail).toBeUndefined()
})
test('JournalEntry shape is stable', () => {
const entry = {
key: 'abc123',
result: { kind: 'ok', output: 'text', usage: { outputTokens: 1 } },
}
const round = JSON.parse(JSON.stringify(entry))
expect(round.key).toBe('abc123')
expect(round.result.kind).toBe('ok')
})

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// Agent backend adapter abstraction. The engine takes an adapter from the registry via resolve then calls run; it does not care about the concrete implementation
// (Anthropic SDK / core runAgent / OpenAI / local model / mock are all adapter implementations).
import type {
AgentProgressUpdate,
AgentRunParams,
AgentRunResult,
} from './types.js'
import type { HostHandle } from './ports.js'
/** Adapter capability declaration. The engine/script degrades based on this (e.g. if the backend does not support schema, switch to text + parse). */
export type AgentAdapterCapabilities = {
/** Supports schema structured output (agent(schema) returns an object directly). */
structuredOutput: boolean
/** Supports tool calling (only the core agent backend has this). */
tools?: boolean
/** Supports streaming (the v1 engine does not consume it; reserved). */
stream?: boolean
}
/** Context for adapter.run. */
export type AgentAdapterContext = {
/** Opaque host handle passed through (used by the core adapter; ignored by standalone backends). */
host: HostHandle
/** Cancellation signal (same as the workflow signal). */
signal: AbortSignal
/** Current workflow runId (for logging/tracing). */
runId: string
/**
* Engine-layer agent sequence number (incremented by hooks.agentIdSeq; same source as panel RunProgress.agents[].id).
* Note: this is a different concept from the core AgentId (a string, used for sub-agent tracking) created internally by the backend;
* do not mix them. This field is the key for registerAgentAbort/unregisterAgentAbort, so that service
* .kill(runId, agentId) can precisely route to the AbortController created by the backend.
*/
agentId: number
/**
* In-progress reporting (called by the backend loop as it accumulates tokens/tools). Optional: standalone backends may not implement it;
* the engine emits the agent_progress event based on this (closure carries agentId/runId for correlation), and the panel refreshes in real time.
*/
onProgress?: (update: AgentProgressUpdate) => void
/**
* Register an agent-level AbortController (optional). The backend calls this after creating the controller to inject it into a Map,
* so that service.kill(runId, agentId) can precisely abort a single agent without affecting others.
* Injected by hooks.agent before backend.run is called.
*/
registerAgentAbort?: (agentId: number, ac: AbortController) => void
/**
* Unregister an agent-level AbortController (called when the agent completes or fails; idempotent).
* Paired with registerAgentAbort.
*/
unregisterAgentAbort?: (agentId: number) => void
}
/**
* Agent backend adapter. The engine only depends on this interface; concrete backends implement it and register into the registry.
* initialize/dispose are optional lifecycle hooks (connection pool / resource management), triggered by the caller via
* registry.initializeAll/disposeAll.
*/
export interface AgentAdapter {
/** Unique identifier (registry routing / logging). */
readonly id: string
/** Capability declaration. */
readonly capabilities: AgentAdapterCapabilities
/** Execute one agent call. */
run(params: AgentRunParams, ctx: AgentAdapterContext): Promise<AgentRunResult>
/** Initialize (triggered by registry.initializeAll). */
initialize?(): Promise<void>
/** Dispose (triggered by registry.disposeAll). */
dispose?(): Promise<void>
}
/** Routing rule: decides which params go to which adapter. Matched in insertion order; first hit wins. */
export type AdapterRouteRule =
| { kind: 'agentType'; agentType: string; adapter: string }
| { kind: 'model'; pattern: string; adapter: string }
| {
kind: 'custom'
match: (params: AgentRunParams) => boolean
adapter: string
}
/** Thrown when the registry cannot find a matching adapter. */
export class AdapterNotFoundError extends Error {
constructor(message: string) {
super(message)
this.name = 'AdapterNotFoundError'
}
}
/**
* Multi-backend registry. register registers an adapter, route/default configure routing, and resolve picks an adapter by
* matching rules in order. The adapter lifecycle (initialize/dispose) is triggered uniformly via
* initializeAll/disposeAll (called by the caller before/after the run).
*/
export class AgentAdapterRegistry {
private readonly adapters = new Map<string, AgentAdapter>()
private readonly rules: AdapterRouteRule[] = []
private defaultId: string | null = null
/** Register an adapter (duplicate id overwrites). Chainable. */
register(adapter: AgentAdapter): this {
this.adapters.set(adapter.id, adapter)
return this
}
/** Set the default adapter (used when no rule matches). Chainable. */
default(adapterId: string): this {
this.defaultId = adapterId
return this
}
/** Add a routing rule (matched in insertion order). Chainable. */
route(rule: AdapterRouteRule): this {
this.rules.push(rule)
return this
}
has(id: string): boolean {
return this.adapters.has(id)
}
get(id: string): AgentAdapter | undefined {
return this.adapters.get(id)
}
/** Match by rules; return the first hit; if no hit, go to default; if neither, throw AdapterNotFoundError. */
resolve(params: AgentRunParams): AgentAdapter {
for (const rule of this.rules) {
if (matchRule(rule, params)) {
const hit = this.adapters.get(rule.adapter)
if (hit) return hit
}
}
if (this.defaultId) {
const fallback = this.adapters.get(this.defaultId)
if (fallback) return fallback
}
throw new AdapterNotFoundError(
`No adapter matched (rules=${this.rules.length}, default=${this.defaultId ?? 'none'})`,
)
}
/** Trigger initialize on all adapters (skips unimplemented ones). */
async initializeAll(): Promise<void> {
for (const a of this.adapters.values()) {
await a.initialize?.()
}
}
/** Trigger dispose on all adapters (skips unimplemented ones). */
async disposeAll(): Promise<void> {
for (const a of this.adapters.values()) {
await a.dispose?.()
}
}
}
function matchRule(rule: AdapterRouteRule, params: AgentRunParams): boolean {
if (rule.kind === 'agentType') return params.agentType === rule.agentType
if (rule.kind === 'model') {
return (
typeof params.model === 'string' && params.model.startsWith(rule.pattern)
)
}
return rule.match(params) // custom rule
}

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// Engine-level constants. No runtime dependencies.
/**
* Workflow tool name. PascalCase matches the system's other tools (Agent/Bash/CronCreate…),
* otherwise the case-sensitive toolMatchesName would fail on the model's natural select:Workflow.
*/
export const WORKFLOW_TOOL_NAME = 'Workflow'
/** Directory for user-named workflow files (relative to project root). */
export const WORKFLOW_DIR_NAME = '.claude/workflows'
/** Persistence directory for workflow runs (journal + run records). */
export const WORKFLOW_RUNS_DIR = '.claude/workflow-runs'
/** Supported script extensions for named workflows (in priority order). */
export const WORKFLOW_SCRIPT_EXTENSIONS = ['.ts', '.js', '.mjs'] as const
/**
* Concurrency: default semaphore permits per workflow run.
* History: previously used min(CAP, cpuCores - 2); changed to a fixed default of 3 — to avoid fanning out a dozen agents at once on multi-core machines.
* A single run can override this via the Workflow tool's maxConcurrency input (still clamped by CAP).
*/
export const DEFAULT_MAX_CONCURRENCY = 3
/** Absolute cap on user-supplied maxConcurrency (anti-abuse). */
export const MAX_CONCURRENCY_CAP = 16
/** Total cap on agent() calls within a single workflow lifecycle. */
export const MAX_TOTAL_AGENTS = 1000
/** Items cap per single parallel()/pipeline() call. */
export const MAX_ITEMS_PER_CALL = 4096

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export class BudgetExhaustedError extends Error {
constructor() {
super('workflow token budget exhausted (budget.total reached the cap)')
this.name = 'BudgetExhaustedError'
}
}
/**
* Token budget accumulator. The script reads via `budget.total / budget.spent() / budget.remaining()`;
* assertCanSpend() enforces a hard cap before each agent() call.
*/
export class Budget {
private spentTokens = 0
constructor(readonly total: number | null) {}
spent(): number {
return this.spentTokens
}
remaining(): number {
return this.total == null
? Infinity
: Math.max(0, this.total - this.spentTokens)
}
addOutputTokens(n: number): void {
if (n > 0) this.spentTokens += n
}
assertCanSpend(): void {
if (this.total != null && this.spentTokens >= this.total) {
throw new BudgetExhaustedError()
}
}
}

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import { DEFAULT_MAX_CONCURRENCY, MAX_CONCURRENCY_CAP } from '../constants.js'
/**
* Async semaphore. acquire() returns a release function; on release the permit is transferred
* directly to the next waiter (available stays unchanged), and only returned when there is no waiter. The total number of permits is conserved.
*
* acquire(signal?) supports cancellation: when the signal is already aborted or aborts while waiting, it rejects immediately,
* the waiter is removed from the queue, and no permit is consumed (to avoid a canceled agent holding a concurrency slot).
*/
export class Semaphore {
private available: number
private readonly waiters: Array<{
wake: () => void
cleanup: () => void
}> = []
constructor(permits: number) {
this.available = Math.max(1, Math.floor(permits))
}
async acquire(signal?: AbortSignal): Promise<() => void> {
if (signal?.aborted) {
throw new Error('Semaphore.acquire aborted (signal already aborted)')
}
if (this.available > 0) {
this.available -= 1
return () => this.release()
}
return new Promise<() => void>((resolve, reject) => {
const onAbort = () => {
const idx = this.waiters.indexOf(entry)
if (idx >= 0) this.waiters.splice(idx, 1)
reject(new Error('Semaphore.acquire aborted'))
}
const wake = () => {
signal?.removeEventListener('abort', onAbort)
resolve(() => this.release())
}
const entry = {
wake,
cleanup: () => signal?.removeEventListener('abort', onAbort),
}
signal?.addEventListener('abort', onAbort, { once: true })
this.waiters.push(entry)
})
}
private release(): void {
const next = this.waiters.shift()
if (next) {
next.wake() // transfer the permit directly
} else {
this.available += 1
}
}
}
/** Default concurrency for the current process (backward-compatible entry; for a specific run, use clampMaxConcurrency to handle user input). */
export function maxConcurrency(): number {
return DEFAULT_MAX_CONCURRENCY
}
/**
* Normalize the "user-supplied maxConcurrency" to legal permits.
* - undefined / NaN → DEFAULT_MAX_CONCURRENCY
* - <1 → 1 (at least one concurrency slot, otherwise the workflow cannot progress)
* - >MAX_CONCURRENCY_CAP → MAX_CONCURRENCY_CAP
* - otherwise the truncated original value
*/
export function clampMaxConcurrency(n: number | undefined): number {
if (n === undefined || Number.isNaN(n)) return DEFAULT_MAX_CONCURRENCY
return Math.max(1, Math.min(Math.trunc(n), MAX_CONCURRENCY_CAP))
}

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import type { HostHandle, WorkflowPorts } from '../ports.js'
import type { JournalEntry } from '../types.js'
import { Budget } from './budget.js'
import { Semaphore, clampMaxConcurrency } from './concurrency.js'
/**
* Resources that can be shared by sub-workflows. When nesting, semaphore/budget/agentCountBox are shared by reference,
* and depth is temporarily +1 while executing a sub-workflow.
*/
export type SharedResources = {
semaphore: Semaphore
budget: Budget
agentCountBox: { value: number }
/** Increasing sequence number for agent() calls; stamps agent_started/agent_done for precise progress correlation. Shared across sub-workflows. */
agentIdSeq: { value: number }
depth: number
}
/** Execution context for a single workflow run. */
export type EngineContext = {
ports: WorkflowPorts
host: HostHandle
signal: AbortSignal
runId: string
workflowName: string
cwd: string
resources: SharedResources
journal: JournalEntry[]
journalIndex: number
journalInvalidated: boolean
currentPhase: string | null
}
export function createSharedResources(
budgetTotal: number | null,
maxConcurrency?: number,
): SharedResources {
return {
semaphore: new Semaphore(clampMaxConcurrency(maxConcurrency)),
budget: new Budget(budgetTotal),
agentCountBox: { value: 0 },
agentIdSeq: { value: 0 },
depth: 0,
}
}
export function createEngineContext(opts: {
ports: WorkflowPorts
host: HostHandle
signal: AbortSignal
runId: string
workflowName: string
cwd: string
budgetTotal: number | null
/** Concurrency slots for a single run; undefined → DEFAULT_MAX_CONCURRENCY. Clamped by clampMaxConcurrency. */
maxConcurrency?: number
journal?: JournalEntry[]
}): EngineContext {
const resources = createSharedResources(opts.budgetTotal, opts.maxConcurrency)
return {
ports: opts.ports,
host: opts.host,
signal: opts.signal,
runId: opts.runId,
workflowName: opts.workflowName,
cwd: opts.cwd,
resources,
journal: opts.journal ? [...opts.journal] : [],
journalIndex: 0,
journalInvalidated: false,
currentPhase: null,
}
}

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/** Engine-level expected errors (script errors, caps, nesting). */
export class WorkflowError extends Error {
constructor(message: string) {
super(message)
this.name = 'WorkflowError'
}
}
/** workflow was aborted (killed). */
export class WorkflowAbortedError extends Error {
constructor() {
super('workflow has been aborted')
this.name = 'WorkflowAbortedError'
}
}

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import { MAX_ITEMS_PER_CALL, MAX_TOTAL_AGENTS } from '../constants.js'
import type {
AgentProgressUpdate,
AgentRunParams,
AgentRunResult,
JournalEntry,
ProgressEvent,
} from '../types.js'
import type { EngineContext } from './context.js'
import { WorkflowAbortedError, WorkflowError } from './errors.js'
import { agentCallKey } from './journal.js'
import type { WorkflowHooks } from './script.js'
/** Sub-workflow executor for the workflow() hook (injected by runWorkflow to avoid circular dependencies). */
export type SubWorkflowRunner = (opts: {
name?: string
scriptPath?: string
script?: string
args?: unknown
}) => Promise<unknown>
type HookProgressInit =
| { type: 'phase_started'; phase: string }
| { type: 'phase_done'; phase: string }
| { type: 'agent_started'; agentId: number; label?: string; phase?: string }
| {
type: 'agent_done'
agentId: number
label?: string
phase?: string
result: AgentRunResult
}
| {
type: 'agent_progress'
agentId: number
label?: string
phase?: string
tokenCount: number
toolCount: number
}
| { type: 'log'; message: string }
export function makeHooks(
ctx: EngineContext,
runSubWorkflow: SubWorkflowRunner,
): WorkflowHooks {
// All progress events auto-inject runId so the adapter can route them to the corresponding task (multiple concurrent workflows)
const emit = (init: HookProgressInit): void => {
ctx.ports.progressEmitter.emit({
runId: ctx.runId,
...init,
} as ProgressEvent)
}
const agent: WorkflowHooks['agent'] = async (prompt, opts = {}) => {
const r = ctx.resources
if (r.agentCountBox.value >= MAX_TOTAL_AGENTS) {
throw new WorkflowError(
`workflow exceeds total agent cap (${MAX_TOTAL_AGENTS})`,
)
}
// Assign a unique id to each agent() call (including journal hits); stamp started/done so the reducer can associate them precisely
const agentId = r.agentIdSeq.value++
const params: AgentRunParams = { prompt, ...opts }
const key = agentCallKey(prompt, params)
const label = opts.label as string | undefined
const phase =
(opts.phase as string | undefined) ?? ctx.currentPhase ?? undefined
// Journal hit -> return cached result directly
if (!ctx.journalInvalidated && ctx.journalIndex < ctx.journal.length) {
const entry = ctx.journal[ctx.journalIndex]!
if (entry.key === key) {
ctx.journalIndex++
emit({
type: 'agent_done',
agentId,
label,
phase,
result: entry.result,
})
return resultToOutput(entry.result)
}
// Divergence: discard subsequent journal entries; everything from here on runs live
ctx.journalInvalidated = true
ctx.journal = ctx.journal.slice(0, ctx.journalIndex)
await ctx.ports.journalStore.truncate(ctx.runId)
}
let release: () => void
try {
release = await ctx.resources.semaphore.acquire(ctx.signal)
} catch {
// Queued wait during abort: the semaphore already removed the waiter and did not consume a permit
throw new WorkflowAbortedError()
}
try {
if (ctx.signal.aborted) throw new WorkflowAbortedError()
// Budget check inside the semaphore critical section: a queued waiter sees the latest spent when woken,
// otherwise N waiters enqueued while spent=0 all pass the check and overspend on wake-up without re-check.
// Journal-hit path does not charge budget and needs no check.
r.budget.assertCanSpend()
const pending = ctx.ports.taskRegistrar.pendingAction(ctx.runId)
if (pending?.kind === 'skip') {
const result: AgentRunResult = { kind: 'skipped' }
emit({ type: 'agent_done', agentId, label, phase, result })
return null
}
ctx.resources.agentCountBox.value++
emit({ type: 'agent_started', agentId, label, phase })
const registry = ctx.ports.agentAdapterRegistry
// onProgress closure: the backend loop accumulates token/tool counts -> emits an agent_progress event (carrying agentId for association)
const onProgress = (update: AgentProgressUpdate): void => {
emit({ type: 'agent_progress', agentId, label, phase, ...update })
}
// Inject agent-level AbortController register/unregister: the backend creates the controller then calls
// registerAgentAbort to inject ports-layer bindings; service.kill(runId, agentId) uses this to
// precisely abort a single agent. When the registry is absent (agentRunner fallback path), there is no backend middle layer,
// and agentAbortControllers at the ports layer is always empty — single-agent kill degrades to a no-op on this path.
const adapterCtx = registry
? {
host: ctx.host,
signal: ctx.signal,
runId: ctx.runId,
agentId,
onProgress,
...(ctx.ports.taskRegistrar.registerAgentAbort
? {
registerAgentAbort: (
id: number,
ac: AbortController,
): void => {
ctx.ports.taskRegistrar.registerAgentAbort?.(
ctx.runId,
id,
ac,
)
},
}
: {}),
...(ctx.ports.taskRegistrar.unregisterAgentAbort
? {
unregisterAgentAbort: (id: number): void => {
ctx.ports.taskRegistrar.unregisterAgentAbort?.(
ctx.runId,
id,
)
},
}
: {}),
}
: null
// resolve is outside the try: configuration errors (e.g. AdapterNotFoundError) propagate directly without retry —
// this is a workflow configuration problem, not a transient backend failure; retrying is meaningless and would mask the bug.
const adapter = registry ? registry.resolve(params) : null
const invokeBackend = (): Promise<AgentRunResult> =>
adapter
? adapter.run(params, adapterCtx!)
: ctx.ports.agentRunner.runAgentToResult(params, ctx.host)
// Auto-retry once on failure: dead (terminal API error after retries) or a non-abort throw
// both get one retry chance; WorkflowAbortedError (kill) is not retried — it is the user's intent.
// If retry still fails: dead stays dead; a throw degrades to dead (one agent must not take down the workflow).
// budget is not double-charged: dead does not call addOutputTokens; retry-ok charges once (at the final ok).
// dead.reason is passed through to the log: no-structured-output (the agent's final text block did not produce plain-object JSON)
// is a high-frequency cause of death; logging detail lets you immediately see what the agent last said.
// detail is wrapped with String() defensively: old journals or third-party adapters may write non-strings (corrupted data),
// and calling .slice directly would throw a TypeError that pierces the logging path.
let result: AgentRunResult
try {
result = await invokeBackend()
if (result.kind === 'dead') {
const detailStr =
typeof result.detail === 'string' ? result.detail : ''
ctx.ports.logger.warn?.(
`agent "${label ?? `#${agentId}`}" returned dead` +
(result.reason ? ` (${result.reason})` : '') +
(detailStr ? `: ${detailStr.slice(0, 150)}` : '') +
'; retrying once',
)
result = await invokeBackend()
}
} catch (e) {
if (e instanceof WorkflowAbortedError) throw e
const eMsg = e instanceof Error ? e.message : String(e)
ctx.ports.logger.warn?.(
`agent "${label ?? `#${agentId}`}" threw (${eMsg}); retrying once`,
)
try {
result = await invokeBackend()
} catch (e2) {
if (e2 instanceof WorkflowAbortedError) throw e2
// Retry still threw: degrade to dead (keep the workflow going; hooks.agent returns null)
result = {
kind: 'dead',
reason: 'runagent-threw',
detail: e2 instanceof Error ? e2.message : String(e2),
}
}
}
if (result.kind === 'ok') {
ctx.resources.budget.addOutputTokens(result.usage.outputTokens)
}
emit({ type: 'agent_done', agentId, label, phase, result })
const entry: JournalEntry = { key, seq: agentId, result }
// Key point: push order = completion order (not call order); read() already re-sorts by seq,
// so during resume the call order aligns with the journal order and the key index stays stable.
ctx.journal.push(entry)
ctx.journalIndex++
await ctx.ports.journalStore.append(ctx.runId, entry)
return resultToOutput(result)
} finally {
release()
}
}
const parallel: WorkflowHooks['parallel'] = async thunks => {
if (thunks.length > MAX_ITEMS_PER_CALL) {
throw new WorkflowError(
`parallel exceeds the per-call items cap (${MAX_ITEMS_PER_CALL})`,
)
}
return Promise.all(
thunks.map(async (t, i) => {
try {
return await t()
} catch (e) {
// The "null on error" contract is unchanged, but it should log — otherwise the workflow author cannot locate why an agent failed
ctx.ports.logger.warn?.(
`parallel thunk #${i} failed: ${(e as Error).message}`,
)
return null
}
}),
)
}
const pipeline: WorkflowHooks['pipeline'] = async <T, R>(
items: readonly T[],
...stages: Array<
(prev: unknown, item: T, index: number) => Promise<unknown>
>
): Promise<Array<R | null>> => {
if (items.length > MAX_ITEMS_PER_CALL) {
throw new WorkflowError(
`pipeline exceeds the per-call items cap (${MAX_ITEMS_PER_CALL})`,
)
}
return Promise.all(
items.map(async (item, index): Promise<R | null> => {
try {
let prev: unknown = item
for (const stage of stages) {
prev = await stage(prev, item, index)
}
return prev as R
} catch (e) {
ctx.ports.logger.warn?.(
`pipeline item #${index} failed: ${(e as Error).message}`,
)
return null
}
}),
)
}
const phase: WorkflowHooks['phase'] = title => {
if (ctx.currentPhase) {
emit({ type: 'phase_done', phase: ctx.currentPhase })
}
ctx.currentPhase = title
emit({ type: 'phase_started', phase: title })
}
const log: WorkflowHooks['log'] = message => {
emit({ type: 'log', message })
}
const workflow: WorkflowHooks['workflow'] = async (nameOrRef, args) => {
if (ctx.resources.depth >= 1) {
throw new WorkflowError('workflow() nesting allows only one level')
}
const sub: Parameters<SubWorkflowRunner>[0] =
typeof nameOrRef === 'string'
? { name: nameOrRef }
: { scriptPath: nameOrRef.scriptPath }
return runSubWorkflow({ ...sub, args })
}
return { agent, parallel, pipeline, phase, log, workflow }
}
function resultToOutput(result: AgentRunResult): unknown {
return result.kind === 'ok' ? result.output : null
}

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import { createHash } from 'node:crypto'
import { appendFile, mkdir, readFile, rm } from 'node:fs/promises'
import { join } from 'node:path'
import type { JournalStore } from '../ports.js'
import type { AgentRunParams, JournalEntry } from '../types.js'
/** Canonical parameter string after removing display-only fields. */
function canonicalParams(params: AgentRunParams): string {
const { label: _label, phase: _phase, ...rest } = params
const keys = Object.keys(rest).sort()
const sorted: Record<string, unknown> = {}
for (const k of keys) sorted[k] = rest[k as keyof typeof rest]
return JSON.stringify(sorted)
}
/** Determinism key for an agent() call (sha256 of prompt + canonical params). */
export function agentCallKey(prompt: string, params: AgentRunParams): string {
return createHash('sha256')
.update(prompt + '\n' + canonicalParams(params))
.digest('hex')
}
/** File-based JournalStore (jsonl, one directory per run). Pure fs, no core dependencies. */
export function createFileJournalStore(runsDir: string): JournalStore {
const pathOf = (runId: string) => join(runsDir, runId, 'journal.jsonl')
return {
async read(runId): Promise<JournalEntry[]> {
try {
const raw = await readFile(pathOf(runId), 'utf-8')
const entries = raw
.split('\n')
.filter(line => line.trim().length > 0)
.map(line => JSON.parse(line) as JournalEntry)
// parallel completion order ≠ call order; re-sort by seq so the key index is stable during resume.
// Old entries missing seq are treated as 0 (forward compatibility; worst case degrades to file order).
return entries.sort((a, b) => (a.seq ?? 0) - (b.seq ?? 0))
} catch {
return []
}
},
async append(runId, entry) {
await mkdir(join(runsDir, runId), { recursive: true })
await appendFile(pathOf(runId), JSON.stringify(entry) + '\n', 'utf-8')
},
async truncate(runId) {
await rm(join(runsDir, runId), { recursive: true, force: true })
},
}
}

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import { readFile, readdir } from 'node:fs/promises'
import { join, parse, resolve } from 'node:path'
import { WORKFLOW_SCRIPT_EXTENSIONS } from '../constants.js'
import { containsPath } from './paths.js'
type Ext = (typeof WORKFLOW_SCRIPT_EXTENSIONS)[number]
function isScriptExt(ext: string): ext is Ext {
return (WORKFLOW_SCRIPT_EXTENSIONS as readonly string[]).includes(
ext.toLowerCase(),
)
}
/** Resolve a named workflow file by priority .ts → .js → .mjs. */
export async function resolveNamedWorkflow(
workflowDir: string,
name: string,
): Promise<{ path: string; content: string } | null> {
for (const ext of WORKFLOW_SCRIPT_EXTENSIONS) {
const p = resolve(workflowDir, name + ext)
// Double safeguard: prevents edge cases missed by the upper-layer sanitize from traversing paths outside workflowDir
if (!containsPath(workflowDir, p)) return null
try {
return { path: p, content: await readFile(p, 'utf-8') }
} catch {
// try the next extension
}
}
return null
}
/** List all named workflows in the directory (excluding non-script files). */
export async function listNamedWorkflows(
workflowDir: string,
): Promise<string[]> {
let files: string[]
try {
files = await readdir(workflowDir)
} catch {
return []
}
return files
.filter(f => isScriptExt(parse(f).ext))
.map(f => parse(f).name)
.sort()
}

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import { resolve, sep } from 'node:path'
/**
* Determine whether target, after resolution, is within base (including equal to base).
* Relative targets are resolved against base (does not depend on process.cwd).
* Uses the `sep` boundary to avoid false prefix positives (e.g. `/foo` is not the parent of `/foobar`).
*/
export function containsPath(base: string, target: string): boolean {
const resolvedBase = resolve(base)
const resolvedTarget = resolve(resolvedBase, target)
if (resolvedTarget === resolvedBase) return true
return resolvedTarget.startsWith(resolvedBase + sep)
}
/**
* Validate whether the named workflow name is a legal identifier (reject path traversal).
* Rejects: path separators, null bytes, `.` / `..`.
* Returns the sanitized name, or null for illegal.
*/
export function sanitizeWorkflowName(name: string): string | null {
if (typeof name !== 'string' || name.length === 0) return null
if (name.includes('/') || name.includes('\\')) return null
if (name.includes('\0')) return null
if (name === '.' || name === '..') return null
return name
}

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import { readFile } from 'node:fs/promises'
import { join } from 'node:path'
import { WORKFLOW_DIR_NAME } from '../constants.js'
import type { HostHandle, WorkflowPorts } from '../ports.js'
import type { JournalEntry, WorkflowRunResult } from '../types.js'
import { createEngineContext } from './context.js'
import { WorkflowAbortedError, WorkflowError } from './errors.js'
import { makeHooks, type SubWorkflowRunner } from './hooks.js'
import { resolveNamedWorkflow } from './namedWorkflows.js'
import { parseScript, type ParsedScript } from './script.js'
export type RunWorkflowOptions = {
/** Already-resolved script source code. */
script: string
args?: unknown
runId: string
workflowName?: string
ports: WorkflowPorts
host: HostHandle
signal: AbortSignal
cwd: string
budgetTotal: number | null
/** Concurrency slots for a single run; undefined → DEFAULT_MAX_CONCURRENCY. */
maxConcurrency?: number
/** resume: when true, load the existing journal and replay. */
resume?: boolean
/** Whether the script source hash changed on resume. When true, ignore the journal and re-run everything. */
scriptChanged?: boolean
}
export async function runWorkflow(
opts: RunWorkflowOptions,
): Promise<WorkflowRunResult> {
const { ports } = opts
let parsed: ParsedScript
try {
parsed = parseScript(opts.script)
} catch (e) {
const error = (e as Error).message
ports.progressEmitter.emit({
type: 'run_done',
runId: opts.runId,
status: 'failed',
error,
})
return { status: 'failed', error }
}
const workflowName = opts.workflowName ?? parsed.meta?.name ?? 'workflow'
// Load the journal (only on resume and when the script is unchanged)
let journal: JournalEntry[] = []
let journalInvalidated = false
if (opts.resume && !opts.scriptChanged) {
journal = await ports.journalStore.read(opts.runId)
} else if (opts.scriptChanged) {
await ports.journalStore.truncate(opts.runId)
journalInvalidated = true
}
const ctx = createEngineContext({
ports,
host: opts.host,
signal: opts.signal,
runId: opts.runId,
workflowName,
cwd: opts.cwd,
budgetTotal: opts.budgetTotal,
maxConcurrency: opts.maxConcurrency,
journal,
})
if (journalInvalidated) ctx.journalInvalidated = true
ports.progressEmitter.emit({
type: 'run_started',
runId: opts.runId,
workflowName,
meta: parsed.meta,
})
// Sub-workflow executor: reuses the same ctx (sharing journal/concurrency/budget/counters), temporarily +1 depth
const runSubWorkflow: SubWorkflowRunner = async sub => {
const script = await resolveSubScript(sub, opts.cwd)
let subParsed: ParsedScript
try {
subParsed = parseScript(script)
} catch (e) {
throw new WorkflowError(
`Sub-workflow script error: ${(e as Error).message}`,
)
}
const prevDepth = ctx.resources.depth
ctx.resources.depth += 1
try {
const subHooks = makeHooks(ctx, runSubWorkflow)
return await subParsed.execute(subHooks, sub.args, ctx.resources.budget)
} finally {
ctx.resources.depth = prevDepth
}
}
const hooks = makeHooks(ctx, runSubWorkflow)
// hook.phase only emits phase_done for the previous phase when switching phases; when the script ends,
// currentPhase is the last phase, and there is no subsequent phase() to trigger its phase_done → the left pane of the UI
// would stay running forever (the agent list already shows ✓ done). Emit one before the terminal state — shared by all paths.
const emitTerminalPhaseDone = (): void => {
if (!ctx.currentPhase) return
ports.progressEmitter.emit({
type: 'phase_done',
runId: opts.runId,
phase: ctx.currentPhase,
})
}
let result: WorkflowRunResult
try {
const returnValue = await parsed.execute(
hooks,
opts.args,
ctx.resources.budget,
)
result = { status: 'completed', returnValue }
} catch (e) {
if (e instanceof WorkflowAbortedError) {
result = { status: 'killed' }
} else {
result = { status: 'failed', error: (e as Error).message }
}
}
emitTerminalPhaseDone()
ports.progressEmitter.emit({
type: 'run_done',
runId: opts.runId,
...result,
})
return result
}
async function resolveSubScript(
sub: { name?: string; scriptPath?: string; script?: string },
cwd: string,
): Promise<string> {
if (sub.script) return sub.script
if (sub.scriptPath) return await readFile(sub.scriptPath, 'utf-8')
if (sub.name) {
const found = await resolveNamedWorkflow(
join(cwd, WORKFLOW_DIR_NAME),
sub.name,
)
if (!found) throw new WorkflowError(`Sub-workflow "${sub.name}" not found`)
return found.content
}
throw new WorkflowError('workflow() requires name or scriptPath')
}

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import type { WorkflowMeta } from '../types.js'
export class ScriptError extends Error {
constructor(message: string) {
super(message)
this.name = 'ScriptError'
}
}
/** Shape of the hook functions the engine injects into a script. */
export type WorkflowHooks = {
agent: (prompt: string, opts?: Record<string, unknown>) => Promise<unknown>
parallel: <T>(thunks: Array<() => Promise<T>>) => Promise<Array<T | null>>
pipeline: <T, R>(
items: readonly T[],
...stages: Array<
(prev: unknown, item: T, index: number) => Promise<unknown>
>
) => Promise<Array<R | null>>
phase: (title: string) => void
log: (message: string) => void
workflow: (
nameOrRef: string | { scriptPath: string },
args?: unknown,
) => Promise<unknown>
}
const META_RE = /export\s+const\s+meta\s*=\s*/
/**
* Extract the `export const meta = { ... }` pure literal. Returns the meta object and the stripped body.
* The literal is evaluated with a parameter-less Function — any identifier reference throws ReferenceError → reported as "not a plain literal".
*/
export function extractMeta(source: string): {
meta: WorkflowMeta | null
body: string
} {
const match = META_RE.exec(source)
if (!match) return { meta: null, body: source }
let i = match.index + match[0].length
while (i < source.length && /\s/.test(source[i]!)) i++
if (source[i] !== '{') {
throw new ScriptError('meta must be an object literal `{ ... }`')
}
// Brace matching (handles strings / escapes / nesting)
let depth = 0
const start = i
let inStr: string | null = null
for (; i < source.length; i++) {
const ch = source[i]!
if (inStr) {
if (ch === '\\') {
i++
continue
}
if (ch === inStr) inStr = null
continue
}
if (ch === '"' || ch === "'" || ch === '`') {
inStr = ch
continue
}
if (ch === '{') depth++
else if (ch === '}') {
depth--
if (depth === 0) {
i++
break
}
}
}
if (depth !== 0) throw new ScriptError('meta literal braces are not closed')
const literal = source.slice(start, i)
let metaObj: unknown
try {
// Parameter-less Function: a plain literal can be evaluated; referencing any identifier → ReferenceError
metaObj = new Function(`return (${literal})`)()
} catch (e) {
throw new ScriptError(
`meta must be a plain literal (no variable/function calls/interpolation): ${(e as Error).message}`,
)
}
const meta = validateMeta(metaObj)
// Strip the meta statement (including trailing semicolon and extra blank lines)
const body =
source.slice(0, match.index) +
source.slice(i).replace(/^[ \t]*;[ \t]*\n/, '\n')
return { meta, body }
}
function validateMeta(v: unknown): WorkflowMeta {
if (typeof v !== 'object' || v === null || Array.isArray(v)) {
throw new ScriptError('meta must be an object')
}
const o = v as Record<string, unknown>
if (typeof o.name !== 'string' || typeof o.description !== 'string') {
throw new ScriptError('meta must include string name and description')
}
return o as unknown as WorkflowMeta
}
// ---- Non-determinism sandbox shim ----
class NonDeterministicError extends Error {
constructor(fn: string) {
super(
`${fn} is not available in workflow scripts (would break resume determinism). Pass timestamps/random seeds via args.`,
)
this.name = 'NonDeterministicError'
}
}
function sandboxDate(): DateConstructor {
const fn = function (...args: unknown[]): Date {
if (args.length === 0)
throw new NonDeterministicError('Date.now()/new Date()')
return new (Date as unknown as DateConstructor)(
...(args as [string | number | Date]),
)
} as unknown as DateConstructor
fn.now = () => {
throw new NonDeterministicError('Date.now()')
}
fn.parse = Date.parse
fn.UTC = Date.UTC
return fn
}
function sandboxMath(): Math {
return new Proxy(Math, {
get(target, prop, receiver) {
if (prop === 'random') {
return () => {
throw new NonDeterministicError('Math.random()')
}
}
return Reflect.get(target, prop, receiver)
},
}) as Math
}
const AsyncFunction = Object.getPrototypeOf(async function () {})
.constructor as {
new (...args: string[]): (...args: unknown[]) => Promise<unknown>
}
export type ParsedScript = {
meta: WorkflowMeta | null
execute: (
hooks: WorkflowHooks,
args: unknown,
budget: unknown,
) => Promise<unknown>
}
/** Validate + wrap the script as an executable async function (Date/Math are shimmed). */
/**
* Detect common violations in the script body (import / extra export) and produce precise errors with guidance.
* Otherwise it would fall through to AsyncFunction's generic "syntax error", making it hard for the model/user to pinpoint the root cause
* (the script is a non-ESM function body, hooks are already injected, and the engine does not transpile TS).
*/
function assertScriptBody(body: string): void {
if (/^\s*import\b/m.test(body)) {
throw new ScriptError(
'workflow scripts are the body of new AsyncFunction (not ESM modules); import is not supported. ' +
'agent / parallel / pipeline / phase / log / workflow / args / budget are injected as parameters — use them directly.',
)
}
// Dynamic import(...) calls: the sandbox only preserves resume determinism, not security, but obvious escape attempts should be blocked.
// Not anchored to the start of a line so it can catch `await import(...)`, `return import(...)`, etc.; requires `import` followed by `(` to intercept,
// avoiding false positives where the word "import" appears inside a string literal (e.g. agent('please import this module')).
if (/\bimport\s*\(/m.test(body)) {
throw new ScriptError(
'dynamic import(...) is forbidden in workflow scripts: it bypasses the Date/Math sandbox and breaks resume determinism. ' +
'The sandbox does not guarantee security (same trust level as the LLM), but explicit escapes are prohibited. Inject external dependencies via args.',
)
}
if (/^\s*export\b/m.test(body)) {
throw new ScriptError(
'workflow scripts allow only one export const meta = {...} (already extracted by the engine). ' +
'Remove other export / export default statements; use top-level return for the result.',
)
}
}
export function parseScript(source: string): ParsedScript {
const { meta, body } = extractMeta(source)
assertScriptBody(body)
let fn: (...args: unknown[]) => Promise<unknown>
try {
fn = new AsyncFunction(
'agent',
'parallel',
'pipeline',
'phase',
'log',
'workflow',
'args',
'budget',
'Date',
'Math',
body,
)
} catch (e) {
throw new ScriptError(`Script syntax error: ${(e as Error).message}`)
}
const sandboxedDate = sandboxDate()
const sandboxedMath = sandboxMath()
return {
meta,
async execute(hooks, args, budget) {
return fn(
hooks.agent,
hooks.parallel,
hooks.pipeline,
hooks.phase,
hooks.log,
hooks.workflow,
args,
budget,
sandboxedDate,
sandboxedMath,
)
},
}
}

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import { Ajv, type ValidateFunction } from 'ajv'
const cache = new WeakMap<object, ValidateFunction>()
/**
* Validate agent output against a JSON Schema (Ajv, compilation result cached by schema object).
* The engine performs secondary validation on the schema result returned by the adapter, and uses it for tests.
*/
export function validateAgainstSchema(
value: unknown,
schema: object,
): { valid: boolean; errors: string[] } {
let validate = cache.get(schema)
if (!validate) {
const ajv = new Ajv({ allErrors: true, strict: false })
validate = ajv.compile(schema) as ValidateFunction
cache.set(schema, validate)
}
const valid = validate(value) as boolean
return {
valid,
errors: valid
? []
: (validate.errors ?? []).map(e => e.message ?? 'validation error'),
}
}

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// @claude-code-best/workflow-engine
// Deterministic JS script orchestration engine. Zero core-layer runtime dependencies; talks to the world via port adapters.
export * from './types.js'
export * from './constants.js'
export * from './ports.js'
export * from './agentAdapter.js'
export * from './engine/concurrency.js'
export * from './engine/script.js'
export * from './engine/journal.js'
export * from './engine/budget.js'
export * from './engine/structuredOutput.js'
export * from './engine/namedWorkflows.js'
export * from './engine/errors.js'
export * from './engine/context.js'
export * from './engine/hooks.js'
export * from './engine/runWorkflow.js'
export * from './progress/events.js'
export {
createWorkflowTool,
type WorkflowToolDescriptor,
} from './tool/WorkflowTool.js'
export { workflowInputSchema, type WorkflowInput } from './tool/schema.js'
export { persistInlineScript } from './tool/persistInline.js'
export { WORKFLOW_TOOL_NAME } from './tool/constants.js'

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import type { AgentAdapterRegistry } from './agentAdapter.js'
import type {
AgentRunParams,
AgentRunResult,
JournalEntry,
ProgressEvent,
} from './types.js'
/**
* Opaque host handle. The core side constructs one per tool call, containing toolUseContext/
* canUseTool/parentMessage, etc. The package never inspects its internals; it only passes it through to the AgentRunner.
* This is the only coupling seam between the package and the core layer, and it is opaque.
*/
const HOST_HANDLE = Symbol('workflow.hostHandle')
export type HostBundle = unknown
export type HostHandle = { readonly [HOST_HANDLE]: HostBundle }
/** Used by the core-side hostFactory: wraps any bundle into an opaque handle. */
export function createHostHandle(bundle: HostBundle): HostHandle {
return { [HOST_HANDLE]: bundle } as HostHandle
}
/** Type guard. */
export function isHostHandle(value: unknown): value is HostHandle {
return (
typeof value === 'object' &&
value !== null &&
HOST_HANDLE in (value as object)
)
}
/** Used by the core-side adapter: unwraps (only the adapter should call this). */
export function unwrapHostHandle(handle: HostHandle): HostBundle {
return (handle as { [k: symbol]: HostBundle })[HOST_HANDLE]
}
/** Backend for the agent() hook. */
export type AgentRunner = {
runAgentToResult(
params: AgentRunParams,
host: HostHandle,
): Promise<AgentRunResult>
}
/** Progress event emitter. */
export type ProgressEmitter = {
emit(event: ProgressEvent): void
}
/** Background task lifecycle. */
export type TaskRegistrar = {
/**
* Register a background task. The adapter creates an AbortController and stores it in task state,
* returning runId and signal (for the engine to execute detached + kill to abort).
*/
register(
opts: {
workflowName: string
workflowFile?: string
summary?: string
toolUseId?: string
/** On resume, reuse the existing runId (read its journal). Omit to generate a new id. */
runId?: string
},
host: HostHandle,
): { runId: string; signal: AbortSignal }
complete(runId: string, summary?: string): void
fail(runId: string, error: string): void
kill(runId: string): void
/**
* Register an agent-level AbortController. Called by the backend when starting an agent, so that service
* .kill(runId, agentId) can precisely abort a single agent (without affecting other agents in the same run).
* Idempotent: re-registering with the same agentId overwrites.
*/
registerAgentAbort?(runId: string, agentId: number, ac: AbortController): void
/**
* Unregister an agent-level AbortController (called when the agent completes/fails; idempotent).
*/
unregisterAgentAbort?(runId: string, agentId: number): void
/**
* Abort a single agent. Returns whether it hit (false = agent already completed/does not exist).
* Does not affect other agents in the same run; the workflow continues (the aborted agent returns dead → null).
*/
killAgent?(runId: string, agentId: number): boolean
/** Returns the current pending skip/retry action, or null. */
pendingAction(runId: string): { kind: 'skip' | 'retry' } | null
}
/** Journal persistence. */
export type JournalStore = {
read(runId: string): Promise<JournalEntry[]>
append(runId: string, entry: JournalEntry): Promise<void>
truncate(runId: string): Promise<void>
}
/** Cancellation / permission gate. */
export type PermissionGate = {
isAborted(host: HostHandle): boolean
}
/** Logging + telemetry. */
export type Logger = {
debug(msg: string): void
event(name: string, metadata?: Record<string, unknown>): void
/**
* Warning-level log (e.g. errors swallowed when a single parallel/pipeline item fails).
* Optional: old ports implementations may omit it; hooks tolerate it with `?.()`.
*/
warn?(msg: string): void
}
/** Ready-to-use context the engine extracts from the host (handle + basic fields). */
export type WorkflowHostContext = {
/** Opaque handle passed through to the AgentRunner (contains toolUseContext/canUseTool/parentMessage). */
handle: HostHandle
cwd: string
/** Token budget cap; null means unlimited. */
budgetTotal: number | null
/** Core-side tool-use id (passed through to task registration). */
toolUseId?: string
}
/**
* Provided by the core side: constructs a WorkflowHostContext from the tool call's core context.
* The arguments are opaque to the package (unknown); the core-side hostFactory knows the real types.
*/
export type HostFactory = (args: {
context: unknown
canUseTool: unknown
parentMessage: unknown
}) => WorkflowHostContext
/** Aggregate of all ports. Injected into createWorkflowTool(ports). */
export type WorkflowPorts = {
agentRunner: AgentRunner
/**
* Multi-backend adapter registry. When provided, takes precedence over agentRunner — hooks.agent routes
* to adapter.run via the registry; when omitted, falls back to agentRunner (backward compatibility).
*/
agentAdapterRegistry?: AgentAdapterRegistry
progressEmitter: ProgressEmitter
taskRegistrar: TaskRegistrar
journalStore: JournalStore
permissionGate: PermissionGate
logger: Logger
hostFactory: HostFactory
}

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import type { ProgressEmitter } from '../ports.js'
import type { ProgressEvent } from '../types.js'
export type { ProgressEvent }
/** Construct a ProgressEmitter from a single callback. */
export function createProgressEmitter(
onEvent: (e: ProgressEvent) => void,
): ProgressEmitter {
return { emit: onEvent }
}
/** Collect all events into an array (for tests). */
export function createBufferingEmitter(): {
emitter: ProgressEmitter
events: ProgressEvent[]
} {
const events: ProgressEvent[] = []
return { emitter: { emit: e => void events.push(e) }, events }
}

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import { readFile } from 'node:fs/promises'
import { join, resolve } from 'node:path'
import { z } from 'zod/v4'
import { WORKFLOW_DIR_NAME, WORKFLOW_TOOL_NAME } from '../constants.js'
import { resolveNamedWorkflow } from '../engine/namedWorkflows.js'
import { runWorkflow } from '../engine/runWorkflow.js'
import { parseScript } from '../engine/script.js'
import { containsPath, sanitizeWorkflowName } from '../engine/paths.js'
import type { WorkflowPorts } from '../ports.js'
import type { WorkflowRunResult } from '../types.js'
import { workflowInputSchema, type WorkflowInput } from './schema.js'
import { persistInlineScript } from './persistInline.js'
/** Self-contained tool descriptor (core wiring wraps it with buildTool). Zero core-layer dependencies. */
export type WorkflowToolDescriptor = {
name: string
inputSchema: z.ZodType<WorkflowInput>
isEnabled: () => boolean
isReadOnly: (input: WorkflowInput) => boolean
description: () => Promise<string>
prompt: () => Promise<string>
renderToolUseMessage: (input: Partial<WorkflowInput>) => string
call: (
input: WorkflowInput,
context: unknown,
canUseTool: unknown,
parentMessage: unknown,
onProgress?: unknown,
) => Promise<{ data: { output: string } }>
mapToolResultToToolResultBlockParam: (
data: { output: string },
toolUseId: string,
) => {
tool_use_id: string
type: 'tool_result'
content: Array<{ type: 'text'; text: string }>
}
}
const WORKFLOW_TOOL_PROMPT = `Use the Workflow tool to execute a workflow script that orchestrates multiple subagents deterministically. The script runs in the background; you receive a run_id immediately and are notified on completion.
Provide the script inline via "script", or reference a named workflow via "name" (resolved from .claude/workflows/), or an existing file via "scriptPath". Pass "args" as a real JSON value (object/array/string), not a stringified string.
Use "resumeFromRunId" to resume a prior run — completed agent() calls replay from the journal instantly.
Concurrency: default is 3 (hard ceiling 16). OMIT maxConcurrency to use 3. To set maxConcurrency to ANY value other than 3, you MUST first ask the user via AskUserQuestion — propose 3 / 6 / 9 (or other tiers matching the fan-out width) with 3 marked "(Recommended)". The ONLY exception: the user has ALREADY specified a concurrency number in this session ("use 6", "maxConcurrency 9") — then honor it without re-asking. Never silently raise concurrency above 3 just because the workflow fans out; 3 is the recommended default.
Script execution model (common pitfalls — getting these wrong is the #1 cause of script errors): the script is the body of \`new AsyncFunction\` — NOT an ESM module, and TypeScript is NOT transpiled. Therefore:
- Do NOT use \`import\`\`agent\`, \`parallel\`, \`pipeline\`, \`phase\`, \`log\`, \`workflow\`, \`args\`, and \`budget\` are injected as parameters; reference them directly.
- Do NOT use TS type annotations, \`interface\`, \`enum\`, \`as\`, or generics — the engine does not transpile, so even a .ts file with type syntax fails to parse.
- Keep EXACTLY ONE \`export const meta = {...}\` (plain literal) and remove every other \`export\` / \`export default\`.
- Return the result with a top-level \`return\`.
Prefer .js / .mjs. See /ultracode for the full playbook and quality patterns.`
export function createWorkflowTool(
ports: WorkflowPorts,
): WorkflowToolDescriptor {
return {
name: WORKFLOW_TOOL_NAME,
inputSchema: workflowInputSchema,
// No per-session runtime opt-in gate here: the "ultracode is on for the
// session" signal is injected by the harness (claude.ai/client), not held
// in any repo state. This tool is compiled in/out via feature('WORKFLOW_SCRIPTS')
// in src/tools.ts; beyond that it is always enabled when present.
isEnabled: () => true,
isReadOnly: () => false,
async description() {
return 'Execute a workflow script that orchestrates multiple subagents to complete a task'
},
async prompt() {
return WORKFLOW_TOOL_PROMPT
},
renderToolUseMessage(input) {
if (input.resumeFromRunId)
return `Workflow resume: ${input.resumeFromRunId}`
const id =
input.name ?? input.scriptPath ?? (input.script ? 'inline' : 'unknown')
return `Workflow: ${id}`
},
async call(input, context, canUseTool, parentMessage) {
const host = ports.hostFactory({ context, canUseTool, parentMessage })
// Resolve the script source
let script: string
let workflowFile: string | undefined
try {
const resolved = await resolveScriptSource(input, host.cwd)
script = resolved.script
workflowFile = resolved.workflowFile
} catch (e) {
return { data: { output: `Error: ${(e as Error).message}` } }
}
// Quick validation (meta + syntax): on failure return an error to the model directly, do not enter the background
try {
parseScript(script)
} catch (e) {
return {
data: {
output: `Error: script validation failed: ${(e as Error).message}`,
},
}
}
const workflowName = input.name ?? input.title ?? 'workflow'
const { runId, signal } = ports.taskRegistrar.register(
{
workflowName,
...(workflowFile ? { workflowFile } : {}),
...(input.description ? { summary: input.description } : {}),
...(host.toolUseId ? { toolUseId: host.toolUseId } : {}),
...(input.resumeFromRunId ? { runId: input.resumeFromRunId } : {}),
},
host.handle,
)
// Inline entry: persist the script to the run directory and return a reusable path (the
// inline -> persist -> edit -> resubmit-as-scriptPath iteration loop promised by the ultracode skill).
// On write failure degrade to a placeholder + warn, do not abort the run (script is already in memory).
if (!workflowFile && input.script) {
try {
workflowFile = await persistInlineScript(
input.script,
runId,
host.cwd,
)
} catch (e) {
ports.logger.warn?.(
`inline script persist failed: ${(e as Error).message}`,
)
}
}
// Detached execution
void runWorkflow({
script,
...(input.args !== undefined
? { args: normalizeArgs(input.args) }
: {}),
runId,
workflowName,
ports,
host: host.handle,
signal,
cwd: host.cwd,
budgetTotal: host.budgetTotal,
...(input.maxConcurrency !== undefined
? { maxConcurrency: input.maxConcurrency }
: {}),
...(input.resumeFromRunId ? { resume: true } : {}),
})
.then(result => onFinish(ports, result, runId))
.catch(e => ports.taskRegistrar.fail(runId, (e as Error).message))
const scriptPath = workflowFile ?? `<inline run ${runId}>`
return {
data: {
output: [
'Workflow started (running in the background).',
`run_id: ${runId}`,
`workflow: ${workflowName}`,
`script: ${scriptPath}`,
'',
'You will be notified on completion. Use /workflows to view live progress.',
].join('\n'),
},
}
},
mapToolResultToToolResultBlockParam(data, toolUseId) {
return {
tool_use_id: toolUseId,
type: 'tool_result',
content: [{ type: 'text', text: data.output }],
}
},
}
}
function onFinish(
ports: WorkflowPorts,
result: WorkflowRunResult,
runId: string,
): void {
if (result.status === 'completed') {
const summary =
result.returnValue == null
? '(no return value)'
: formatValue(result.returnValue)
ports.taskRegistrar.complete(runId, summary)
} else if (result.status === 'failed') {
ports.taskRegistrar.fail(runId, result.error ?? 'workflow failed')
} else {
ports.taskRegistrar.kill(runId)
}
}
function formatValue(v: unknown): string {
if (typeof v === 'string') return v.slice(0, 500)
try {
return JSON.stringify(v).slice(0, 500)
} catch {
return String(v)
}
}
/**
* Defensively normalize args: under the legacy `z.string()` contract the model may send a stringified JSON object.
* Only normalize when the string JSON.parses to an object/array; plain strings, numbers, etc. are preserved as-is.
*/
function normalizeArgs(raw: unknown): unknown {
if (typeof raw !== 'string') return raw
try {
const parsed: unknown = JSON.parse(raw)
if (typeof parsed === 'object' && parsed !== null) return parsed
return raw
} catch {
return raw
}
}
async function resolveScriptSource(
input: WorkflowInput,
cwd: string,
): Promise<{ script: string; workflowFile?: string }> {
if (input.script) return { script: input.script }
if (input.scriptPath) {
const resolved = resolve(cwd, input.scriptPath)
if (!containsPath(cwd, resolved)) {
throw new Error(
`scriptPath "${input.scriptPath}" is out of bounds (after resolve, ${resolved} is not within cwd ${cwd})`,
)
}
return {
script: await readFile(resolved, 'utf-8'),
workflowFile: resolved,
}
}
if (input.name) {
if (sanitizeWorkflowName(input.name) === null) {
throw new Error(
`Named workflow name "${input.name}" is invalid (contains path separators or is . / ..)`,
)
}
const found = await resolveNamedWorkflow(
join(cwd, WORKFLOW_DIR_NAME),
input.name,
)
if (!found) {
throw new Error(
`Named workflow "${input.name}" not found (looked in ${WORKFLOW_DIR_NAME}/)`,
)
}
return { script: found.content, workflowFile: found.path }
}
throw new Error('One of script, name, or scriptPath must be provided')
}

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export { WORKFLOW_TOOL_NAME } from '../constants.js'

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import { mkdir, writeFile } from 'node:fs/promises'
import { join } from 'node:path'
import { WORKFLOW_RUNS_DIR } from '../constants.js'
/**
* Persist an inline workflow script to the run directory so the caller can
* iterate via `scriptPath` + `resumeFromRunId` without resending the full script
* (the round-trip the ultracode skill promises for the inline entry path).
*
* Mirrors engine/journal.ts: writes directly via node:fs/promises (no port) to
* `<cwd>/<WORKFLOW_RUNS_DIR>/<runId>/script.js` — the same directory as
* journal.jsonl, so journalStore.truncate(runId) cleans it up alongside the journal.
*
* Fixed filename `script.js`: parseScript ignores the extension and the runId
* already makes the directory unique, so a stable name aids muscle memory.
*/
export async function persistInlineScript(
script: string,
runId: string,
cwd: string,
): Promise<string> {
const dir = join(cwd, WORKFLOW_RUNS_DIR, runId)
await mkdir(dir, { recursive: true })
const filePath = join(dir, 'script.js')
await writeFile(filePath, script, 'utf-8')
return filePath
}

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import { z } from 'zod/v4'
/** Workflow tool input schema. args is any JSON value (object/array/string/etc.). */
export const workflowInputSchema = z.object({
script: z
.string()
.optional()
.describe('Self-contained workflow script source (inline)'),
name: z
.string()
.optional()
.describe('Named workflow, resolved to .claude/workflows/<name>.ts|js|mjs'),
scriptPath: z
.string()
.optional()
.describe('Absolute path to an existing script file'),
args: z
.unknown()
.optional()
.describe(
'The args global variable passed through to the script. Pass a real JSON value (object/array/string), not a JSON string.',
),
resumeFromRunId: z
.string()
.optional()
.describe('Resume the specified run, replaying the journal'),
description: z
.string()
.optional()
.describe('A short description of this invocation (3-5 words)'),
title: z.string().optional().describe('Progress viewer title'),
maxConcurrency: z
.number()
.int()
.min(1)
.max(16)
.optional()
.describe(
'Concurrency cap for agent(). Defaults to 3 (max 16). When the workflow contains heavy parallel/pipeline fan-out, you may confirm the desired concurrency with the user via AskUserQuestion before launching.',
),
})
/**
* Workflow tool input type — derived from the schema to avoid hand-written type/schema drift.
* In the old implementation {@link WorkflowInput} was hand-written in types.ts and the schema in schema.ts,
* bridged by a `as unknown as z.ZodType<WorkflowInput>` double assertion — when the schema changed fields
* but the type did not, TS would not flag it. With z.infer, schema/type stay in sync forever.
*/
export type WorkflowInput = z.infer<typeof workflowInputSchema>
/** typeof type of the schema (used for "schema is the source of truth" precise signatures). */
export type WorkflowInputSchema = typeof workflowInputSchema

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// Pure type definitions. No runtime dependencies.
// WorkflowInput has been migrated to tool/schema.ts and derived via z.infer to avoid drift from the schema.
/** Shape of the script's `export const meta = {...}` (must be a plain literal). */
export type WorkflowMeta = {
name: string
description: string
whenToUse?: string
phases?: Array<{ title: string; detail?: string }>
}
/** Parameters passed by agent() to the AgentRunner. */
export type AgentRunParams = {
prompt: string
/** JSON Schema; when provided, agent returns a validated object instead of text. */
schema?: object
model?: string
/** Output token cap (passed through to the agent backend, e.g. LLM max_tokens). */
maxTokens?: number
/** Custom subagent type (resolved from the registry). */
agentType?: string
isolation?: 'worktree'
allowedTools?: string[]
/** Display-only; not part of the journal key. */
label?: string
/** Display-only; not part of the journal key. */
phase?: string
}
/** Progress snapshot while the agent is running (onProgress callback payload; backend loop accumulates tokens/tools). */
export type AgentProgressUpdate = {
tokenCount: number
toolCount: number
}
/**
* Returned by AgentRunner. The ok variant carries model/toolCount for panel display (optional; standalone backends may leave them blank).
*
* dead carries optional reason/detail: the journal history only records `{kind:"dead"}` with no info,
* so during debugging you cannot distinguish "agent finished but produced no StructuredOutput" from "runAgent threw".
* reason lets the hooks retry log, the panel, and post-hoc auditing see the cause of death immediately.
*/
export type AgentRunResult =
| {
kind: 'ok'
output: string | object
usage: { outputTokens: number }
/** The actually-resolved model id (display-only). */
model?: string
/** Number of tool calls during the agent run. */
toolCount?: number
/** Total context tokens at completion (display-only; same basis as the real-time agent_progress). */
tokenCount?: number
}
| { kind: 'skipped' }
| {
kind: 'dead'
/**
* Cause-of-death classification for log aggregation / post-hoc auditing. Optional for backward compatibility with old journals.
* - no-structured-output: agent finished but finalize content has no StructuredOutput (neither called tools nor produced JSON in text)
* - runagent-threw: runAgent threw a non-abort error (API failure / context overflow / runtime error)
* - worktree-failed: isolation:'worktree' creation failed (fail-closed degradation)
* - unknown: unclassified (compatible with old backends / third-party adapters)
*/
reason?:
| 'no-structured-output'
| 'runagent-threw'
| 'worktree-failed'
| 'unknown'
/** Detail (error message / text preview) for logs; not shown to end users. */
detail?: string
}
/** A single record in the journal. seq = agent() call sequence number; read() re-sorts by it to stabilize resume. */
export type JournalEntry = {
key: string
/** agent() call order (from agentIdSeq; monotonically increasing across sub-workflows). */
seq: number
result: AgentRunResult
}
/** Progress events. All variants carry runId so the adapter can route to the corresponding task (multiple concurrent workflows). */
export type ProgressEvent =
| {
type: 'run_started'
runId: string
workflowName: string
meta: WorkflowMeta | null
}
| { type: 'phase_started'; runId: string; phase: string }
| { type: 'phase_done'; runId: string; phase: string }
| {
type: 'agent_started'
runId: string
agentId: number
label?: string
phase?: string
}
| {
type: 'agent_done'
runId: string
agentId: number
label?: string
phase?: string
result: AgentRunResult
}
| {
type: 'agent_progress'
runId: string
agentId: number
label?: string
phase?: string
tokenCount: number
toolCount: number
}
| { type: 'log'; runId: string; message: string }
| {
type: 'run_done'
runId: string
status: 'completed' | 'failed' | 'killed'
returnValue?: unknown
error?: string
}
/** Engine run result. */
export type WorkflowRunResult = {
status: 'completed' | 'failed' | 'killed'
returnValue?: unknown
error?: string
}

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{
"extends": "../../tsconfig.base.json",
"compilerOptions": {
"target": "ESNext",
"module": "ESNext",
"moduleResolution": "bundler",
"strict": true,
"skipLibCheck": true,
"noEmit": true,
"esModuleInterop": true,
"allowSyntheticDefaultImports": true,
"types": ["bun"],
"lib": ["ESNext"]
},
"include": ["src/**/*"],
"exclude": ["node_modules"]
}