### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet - [x] This is a single bug report (please file separate reports for different bugs) - [x] I am using the latest version of Claude Code ### What's Wrong? I received the attached stack overflow while coding. - Error type: Stack overflow during tool execution - Location: Promise handling in cli.js (line

[BUG] Stack overflow

Resolved 💬 3 comments Opened Jan 8, 2026 by jweil952 Closed Jan 11, 2026
Preflight Checklist

[x] I have searched existing issues and this hasn't been reported yet
[x] This is a single bug report (please file separate reports for different bugs)
[x] I am using the latest version of Claude Code
What's Wrong?

I received the attached stack overflow while coding.
Error type: Stack overflow during tool execution
Location: Promise handling in cli.js (line 3437 area)
Context: Occurred while I was editing a file
ClaudeError.txt
What Should Happen?

Continue with coding (Flutter/python)
Error Messages/Logs

Exception in PromiseRejectCallback:
file:///C:/Users/jeffr/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3437
`,isMeta:!0}),...A]}async function t59(A,Q){if(GrQ())return;let[{tools:B},G,Z,Y]=await Promise.all([pI1(A),rz(Q),hV(),OD()]),J=Y.gitStatus?.length??0,X=Z.claudeMd?.length??0,I=J+X,W=y9();setTimeout(()=>W.abort(),1000);let K=l1(),V=GFA(Q),H=BFA(V,K),D=await emA(K,W.signal,H),F=0,E=0,z=0,$=0,L=0,O=G.filter((_)=>!_.isMcp);F=B.length,$=O.length;let M=new Set;for(let _ of B){let j=_.name.split("__");if(j.length>=3&&j[1])M.add(j[1])}E=M.size;try{if(B.length>0){let _=I3(),{mcpToolTokens:j}=await TkA(G,async()=>Q,null,_);z=j}if(O.length>0)L=await Hg2(G,async()=>Q,null)}catch{}l("tengu_context_size",{git_status_size:J,claude_md_size:X,total_context_size:I,project_file_count_rounded:D,mcp_tools_count:F,mcp_servers_count:E,mcp_tools_tokens:z,non_mcp_tools_count:$,non_mcp_tools_tokens:L})}function e59(A,Q,B){switch(A.name){case pd:{let G=$W(B);if(G)return{...Q,plan:G};return Q}case W9.name:{let G=W9.inputSchema.parse(Q),{command:Z,timeout:Y,description:J,run_in_background:X}=G,I=Z.replace(`cd 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Q==="object"&&"plan"in Q){let{plan:B,...G}=Q;return G}return Q}default:return Q}}var iG7;var id=w(()=>{vW1();U8();zY();K01();V0();oQ();Zy();G2();$Y();pK();Ns();yr();dd();OZ();sH();B0();y1();JK1();g2();cw();S8A();rq();fS();eF();iG7=c(sh2(),1)});var Q79=w(()=>{V0();oQ();IZ();id();OZ();g2();B0()});var B79=w(()=>{zY();pK();dd();Ns();i4A();b1();Q79()});function SF1(A){G79.push(A)}async function Z79(A,Q,B,G,Z,Y){let J={messages:A,systemPrompt:Q,userContext:B,systemContext:G,toolUseContext:Z,querySource:Y};for(let X of G79)try{await X(J)}catch(I){r(I instanceof Error?I:Error(`Post-sampling hook failed: ${I}`))}}var G79;var tfA=w(()=>{b1();G79=[]});class xF1{toolDefinitions;canUseTool;tools=[];toolUseContext;hasErrored=!1;discarded=!1;progressAvailableResolve;constructor(A,Q,B){this.toolDefinitions=A;this.canUseTool=Q;this.toolUseContext=B}discard(){this.discarded=!0}addTool(A,Q){let 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yA;F=CA}Y={...Y,messages:F};let L=[],O=[];h6("query_setup_start");let _=lw("tengu_streaming_tool_execution2")?new xF1(Y.options.tools,Z,Y):null,j=await Y.getAppState(),P=j.toolPermissionContext.mode,k=z0A({permissionMode:P,mainLoopModel:Y.options.mainLoopModel,exceeds200kTokens:P==="plan"&&a31(F)}),x=s59(Q,G);h6("query_setup_end");let m=void 0,{isAtBlockingLimit:u}=fd(OI(F));if(u){yield RY({content:Qo,error:"invalid_request"});return}let t=!0;h6("query_api_loop_start");try{while(t){t=!1;try{let s=!1;h6("query_api_streaming_start");for await(let FA of jDA({messages:e6A(F,B),systemPrompt:x,maxThinkingTokens:Y.options.maxThinkingTokens,tools:Y.options.tools,signal:Y.abortController.signal,options:{async getToolPermissionContext(){return(await Y.getAppState()).toolPermissionContext},model:k,toolChoice:void 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0};l("tengu_steering_attachment_resending",{queryChainId:J.queryTracking?.chainId,queryDepth:J.queryTracking?.depth}),yield*yN({messages:[...A,...Q,...K],systemPrompt:B,userContext:G,systemContext:Z,canUseTool:Y,toolUseContext:V,autoCompactTracking:I,fallbackModel:W,querySource:X})}return}}async function*tG7(A,Q,B,G,Z,Y,J,X,I,W,K){let V=Date.now(),H={messages:[...A,...Q],systemPrompt:B,userContext:G,systemContext:Z,toolUseContext:J,querySource:X};if(X79(H),process.env.CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION!=="false")V79(H);try{let D=[],E=(await J.getAppState()).toolPermissionContext.mode,z=KM0(E,J.abortController.signal,void 0,K??!1,J.agentId,J,[...A,...Q]),$="",L=0,O=!1,M="",_=!1,j=[],P=[];for await(let k of z){if(k.message){if(yield k.message,k.message.type==="progress"&&k.message.toolUseID){$=k.message.toolUseID,L++;let x=k.message.data;if(x.command)P.push({command:x.command,promptText:x.promptText})}if(k.message.type==="attachment"){let x=k.message.attachment;if("hookEvent"in x&&(x.hookEvent==="Stop"||x.hookEvent==="SubagentStop")){if(x.type==="hook_non_blocking_error")j.push(x.stderr||`Exit code ${x.exitCode}`),_=!0;else if(x.type==="hook_error_during_execution")j.push(x.content),_=!0;else if(x.type==="hook_success"){if(x.stdout&&x.stdout.trim()||x.stderr&&x.stderr.trim())_=!0}}}}if(k.blockingError){let x=N0({content:JM0(k.blockingError),isMeta:!0});D.push(x),yield x,_=!0,j.push(k.blockingError.blockingError)}if(k.preventContinuation)O=!0,M=k.stopReason||"Stop hook prevented continuation",yield o9({type:"hook_stopped_continuation",message:M,hookName:"Stop",toolUseID:$,hookEvent:"Stop"});if(J.abortController.signal.aborted){l("tengu_pre_stop_hooks_cancelled",{queryChainId:J.queryTracking?.chainId,queryDepth:J.queryTracking?.depth}),yield AhA({toolUse:!1});return}}if(L>0){if(yield D79(L,P,j,O,M,_,"suggestion",$),j.length>0)J.addNotification?.({key:"stop-hook-error",text:"Stop hook error occurred · ctrl+o to see",priority:"immediate"})}if(O)return;if(D.length>0)yield*yN({messages:[...A,...Q,...D],systemPrompt:B,userContext:G,systemContext:Z,canUseTool:Y,toolUseContext:J,autoCompactTracking:I,fallbackModel:W,stopHookActive:!0,querySource:X})}catch(D){let F=Date.now()-V;l("tengu_stop_hook_error",{duration:F,queryChainId:J.queryTracking?.chainId,queryDepth:J.queryTracking?.depth}),yield ZS(`Stop hook failed: ${D instanceof Error?D.message:String(D)}`,"warning")}}async function*kL0(A,Q,B,G){let Z=G;for(let{isConcurrencySafe:Y,blocks:J}of eG7(A,Z))if(Y){let X={};for await(let I of QZ7(J,Q,B,Z)){if(I.contextModifier){let{toolUseID:W,modifyContext:K}=I.contextModifier;if(!X[W])X[W]=[];X[W].push(K)}yield{message:I.message,newContext:Z}}for(let I of J){let W=X[I.id];if(!W)continue;for(let K of W)Z=K(Z)}yield{newContext:Z}}else for await(let X of AZ7(J,Q,B,Z)){if(X.newContext)Z=X.newContext;yield{message:X.message,newContext:Z}}}function eG7(A,Q){return A.reduce((B,G)=>{let Z=Q.options.tools.find((X)=>X.name===G.name),Y=Z?.inputSchema.safeParse(G.input),J=Y?.success?Boolean(Z?.isConcurrencySafe(Y.data)):!1;if(J&&B[B.length-1]?.isConcurrencySafe)B[B.length-1].blocks.push(G);else B.push({isConcurrencySafe:J,blocks:[G]});return B},[])}async function*AZ7(A,Q,B,G){let Z=G;for(let Y of A){G.setInProgressToolUseIDs((J)=>new Set([...J,Y.id]));for await(let J of yF1(Y,Q.find((X)=>X.message.content.some((I)=>I.type==="tool_use"&&I.id===Y.id)),B,Z)){if(J.contextModifier)Z=J.contextModifier.modifyContext(Z);yield{message:J.message,newContext:Z}}K79(G,Y.id)}}async function*QZ7(A,Q,B,G){yield*MFA(A.map(async function*(Z){G.setInProgressToolUseIDs((Y)=>new Set([...Y,Z.id])),yield*yF1(Z,Q.find((Y)=>Y.message.content.some((J)=>J.type==="tool_use"&&J.id===Z.id)),B,G),K79(G,Z.id)}),oG7())}function K79(A,Q){A.setInProgressToolUseIDs((B)=>new Set([...B].filter((G)=>G!==Q)))}function BZ7(A,Q){if(!A.startsWith("mcp__"))return;let B=tH(A);if(!B)return;let G=Q.find((Z)=>Y8(Z.name)===B.serverName);if(G?.type==="connected")return G.config.type??"stdio";return}async function*yF1(A,Q,B,G){let Z=A.name,Y=dB1(G.options.tools,Z),J=Q.message.id,X=Q.requestId,I=BZ7(Z,G.options.mcpClients);if(!Y){l("tengu_tool_use_error",{error:`No such tool available: ${Z}`,toolName:Z,toolUseID:A.id,isMcp:Z.startsWith("mcp__"),queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}}),yield{message:N0({content:[{type:"tool_result",content:`<tool_use_error>Error: No such tool available: ${Z}</tool_use_error>`,is_error:!0,tool_use_id:A.id}],toolUseResult:`Error: No such tool available: ${Z}`,sourceToolAssistantUUID:Q.uuid})};return}let W=A.input;try{if(G.abortController.signal.aborted){l("tengu_tool_use_cancelled",{toolName:Y.name,toolUseID:A.id,isMcp:Y.isMcp??!1,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}});let K=VM0(A.id);yield{message:N0({content:[K],toolUseResult:qFA,sourceToolAssistantUUID:Q.uuid})};return}for await(let K of GZ7(Y,A.id,W,G,B,Q,J,X,I))yield K}catch(K){r(K instanceof Error?K:Error(String(K)));let V=K instanceof Error?K.message:String(K),D=`Error calling tool${Y?` (${Y.name})`:""}: ${V}`;yield{message:N0({content:[{type:"tool_result",content:`<tool_use_error>${D}</tool_use_error>`,is_error:!0,tool_use_id:A.id}],toolUseResult:D,sourceToolAssistantUUID:Q.uuid})}}}function GZ7(A,Q,B,G,Z,Y,J,X,I){let W=new efA;return ZZ7(A,Q,B,G,Z,Y,J,X,I,(K)=>{l("tengu_tool_use_progress",{messageID:J,toolName:A.name,isMcp:A.isMcp??!1,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}}),W.enqueue({message:H79({toolUseID:K.toolUseID,parentToolUseID:Q,data:K.data})})}).then((K)=>{for(let V of K)W.enqueue(V)}).catch((K)=>{W.error(K)}).finally(()=>{W.done()}),W}async function ZZ7(A,Q,B,G,Z,Y,J,X,I,W){let K=A.inputSchema.safeParse(B);if(!K.success){let j=IZ7(A.name,K.error);return l("tengu_tool_use_error",{error:"InputValidationError",errorDetails:j.slice(0,2000),messageID:J,toolName:A.name,isMcp:A.isMcp??!1,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}}),[{message:N0({content:[{type:"tool_result",content:`<tool_use_error>InputValidationError: ${j}</tool_use_error>`,is_error:!0,tool_use_id:Q}],toolUseResult:`InputValidationError: ${K.error.message}`,sourceToolAssistantUUID:Y.uuid})}]}let V=await A.validateInput?.(K.data,G);if(V?.result===!1)return l("tengu_tool_use_error",{messageID:J,toolName:A.name,error:V.message,errorCode:V.errorCode,isMcp:A.isMcp??!1,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}}),[{message:N0({content:[{type:"tool_result",content:`<tool_use_error>${V.message}</tool_use_error>`,is_error:!0,tool_use_id:Q}],toolUseResult:`Error: ${V.message}`,sourceToolAssistantUUID:Y.uuid})}];let H=[],D=K.data,F=!1,E,z;for await(let j of XZ7(G,A,D,Q,Y.message.id,X,I))switch(j.type){case"message":if(j.message.message.type==="progress")W(j.message.message);else H.push(j.message);break;case"hookPermissionResult":z=j.hookPermissionResult;break;case"preventContinuation":F=j.shouldPreventContinuation;break;case"stopReason":E=j.stopReason;break;case"stop":return H.push({message:N0({content:[VM0(Q)],toolUseResult:`Error: ${E}`,sourceToolAssistantUUID:Y.uuid})}),H}let $={};if(D&&typeof D==="object"){if(A.name===p6&&"file_path"in D)$.file_path=String(D.file_path);else if((A.name===x3||A.name===vZ)&&"file_path"in D)$.file_path=String(D.file_path);else if(A.name===H9&&"command"in D){let j=D;$.full_command=j.command}}dF2(A.name,$),pF2();let L;if(z!==void 0&&z.behavior==="allow"&&!A.requiresUserInteraction?.())v(`Hook approved tool use for ${A.name}, bypassing permission check`),L=z;else if(z!==void 0&&z.behavior==="allow"&&A.requiresUserInteraction?.())v(`Hook approved tool use for ${A.name}, but tool requires user interaction`),L=await Z(A,D,G,Y,Q);else if(z!==void 0&&z.behavior==="deny")v(`Hook denied tool use for ${A.name}`),L=z;else{let j=z?.behavior==="ask"?z:void 0;L=await Z(A,D,G,Y,Q,j)}if(L.decisionReason?.type==="hook"&&L.decisionReason.hookName==="PermissionRequest"&&L.behavior!=="ask")H.push({message:o9({type:"hook_permission_decision",decision:L.behavior,toolUseID:Q,hookEvent:"PermissionRequest"})});if(L.behavior!=="allow"){let j=G.toolDecisions?.get(Q);TK0("reject",j?.source||"unknown"),wY1(),l("tengu_tool_use_can_use_tool_rejected",{messageID:J,toolName:A.name,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}});let P=L.message;if(F&&!P)P=`Execution stopped by PreToolUse hook${E?`: ${E}`:""}`;return H.push({message:N0({content:[{type:"tool_result",content:P,is_error:!0,tool_use_id:Q}],toolUseResult:`Error: ${P}`,sourceToolAssistantUUID:Y.uuid})}),H}l("tengu_tool_use_can_use_tool_allowed",{messageID:J,toolName:A.name,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}}),D=L.updatedInput;let O={};if(A.name===H9&&"command"in D){let j=D;O={bash_command:j.command.trim().split(/\s+/)[0]||"",full_command:j.command,...j.timeout!==void 0&&{timeout:j.timeout},...j.description!==void 0&&{description:j.description},..."dangerouslyDisableSandbox"in j&&{dangerouslyDisableSandbox:j.dangerouslyDisableSandbox}}}let M=G.toolDecisions?.get(Q);TK0(M?.decision||"unknown",M?.source||"unknown"),cF2();let _=Date.now();try{let j=await A.call(D,{...G,userModified:L.userModified??!1},Z,Y,(p)=>{W({toolUseID:p.toolUseID,data:p.data})}),P=Date.now()-_;if(O$1(P),j.data&&typeof j.data==="object"){let p={};if(A.name===p6&&"content"in j.data){if("file_path"in D)p.file_path=String(D.file_path);p.content=String(j.data.content)}if((A.name===x3||A.name===vZ)&&"file_path"in D){if(p.file_path=String(D.file_path),A.name===x3&&"diff"in j.data)p.diff=String(j.data.diff);if(A.name===vZ&&"content"in D)p.content=String(D.content)}if(A.name===H9&&"command"in D){let AA=D;if(p.bash_command=AA.command,"output"in j.data)p.output=String(j.data.output)}if(Object.keys(p).length>0)lF2("tool.output",p)}if(typeof j==="object"&&"structured_output"in j)H.push({message:o9({type:"structured_output",data:j.structured_output})});PK0({success:!0});let k=j.data&&typeof j.data==="object"?Q1(j.data):String(j.data??"");wY1(k);let x=0;try{x=Q1(j.data).length}catch(p){r(p instanceof Error?p:Error(String(p)))}l("tengu_tool_use_success",{messageID:J,toolName:A.name,isMcp:A.isMcp??!1,durationMs:P,toolResultSizeBytes:x,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}});let m=i_(A)?GM0(A.name):null;XD("tool_result",{tool_name:A.name,success:"true",duration_ms:String(P),...Object.keys(O).length>0&&{tool_parameters:Q1(O)},tool_result_size_bytes:String(x),...M&&{decision_source:M.source,decision_type:M.decision},...m&&{mcp_server_scope:m}});let u=j.data,t=[],e=j.contextModifier;async function b(p){let ZA=[await PQ2(A,p,Q)];if("acceptFeedback"in L&&L.acceptFeedback)ZA.push({type:"text",text:L.acceptFeedback});H.push({message:N0({content:ZA,toolUseResult:p,sourceToolAssistantUUID:Y.uuid}),contextModifier:e?{toolUseID:Q,modifyContext:e}:void 0})}if(!i_(A))await b(u);for await(let p of YZ7(G,A,Q,Y.message.id,L,u,X,I))if("updatedMCPToolOutput"in p){if(i_(A))u=p.updatedMCPToolOutput}else if(i_(A))t.push(p);else H.push(p);if(i_(A))await b(u);if(j.newMessages&&j.newMessages.length>0)for(let p of j.newMessages)H.push({message:p});if(F)H.push({message:o9({type:"hook_stopped_continuation",message:E||"Execution stopped by hook",hookName:`PreToolUse:${A.name}`,toolUseID:Q,hookEvent:"PreToolUse"})});for(let p of t)H.push(p);return H}catch(j){let P=Date.now()-_;if(O$1(P),PK0({success:!1,error:j instanceof Error?j.message:String(j)}),wY1(),!(j instanceof lY)){if(!(j instanceof Hy))r(j instanceof Error?j:Error(String(j)));l("tengu_tool_use_error",{messageID:J,toolName:A.name,error:j instanceof Error?j.constructor.name:"UnknownError",isMcp:A.isMcp??!1,queryChainId:G.queryTracking?.chainId,queryDepth:G.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}});let u=i_(A)?GM0(A.name):null;XD("tool_result",{tool_name:A.name,use_id:Q,success:"false",duration_ms:String(P),error:j instanceof Error?j.message:String(j),...Object.keys(O).length>0&&{tool_parameters:Q1(O)},...M&&{decision_source:M.source,decision_type:M.decision},...u&&{mcp_server_scope:u}})}let k=kF1(j),x=j instanceof lY,m=[];for await(let u of JZ7(G,A,Q,J,D,k,x,X,I))m.push(u);return[{message:N0({content:[{type:"tool_result",content:k,is_error:!0,tool_use_id:Q}],toolUseResult:`Error: ${k}`,sourceToolAssistantUUID:Y.uuid})},...m]}finally{if(M)G.toolDecisions?.delete(Q)}}async function*YZ7(A,Q,B,G,Z,Y,J,X){let I=Date.now();try{let K=(await A.getAppState()).toolPermissionContext.mode,V=Y;for await(let H of IM0(Q.name,B,Z.updatedInput,V,A,K,A.abortController.signal))try{if(H.message?.type==="attachment"&&H.message.attachment.type==="hook_cancelled"){l("tengu_post_tool_hooks_cancelled",{toolName:Q.name,queryChainId:A.queryTracking?.chainId,queryDepth:A.queryTracking?.depth}),yield{message:o9({type:"hook_cancelled",hookName:`PostToolUse:${Q.name}`,toolUseID:B,hookEvent:"PostToolUse"})};continue}if(H.message)yield{message:H.message};if(H.blockingError)yield{message:o9({type:"hook_blocking_error",hookName:`PostToolUse:${Q.name}`,toolUseID:B,hookEvent:"PostToolUse",blockingError:H.blockingError})};if(H.preventContinuation){yield{message:o9({type:"hook_stopped_continuation",message:H.stopReason||"Execution stopped by PostToolUse hook",hookName:`PostToolUse:${Q.name}`,toolUseID:B,hookEvent:"PostToolUse"})};return}if(H.additionalContexts&&H.additionalContexts.length>0)yield{message:o9({type:"hook_additional_context",content:H.additionalContexts,hookName:`PostToolUse:${Q.name}`,toolUseID:B,hookEvent:"PostToolUse"})};if(H.updatedMCPToolOutput&&i_(Q))V=H.updatedMCPToolOutput,yield{updatedMCPToolOutput:V}}catch(D){let F=Date.now()-I;l("tengu_post_tool_hook_error",{messageID:G,toolName:Q.name,isMcp:Q.isMcp??!1,duration:F,queryChainId:A.queryTracking?.chainId,queryDepth:A.queryTracking?.depth,...X?{mcpServerType:X}:{},...J?{requestId:J}:{}}),yield{message:o9({type:"hook_error_during_execution",content:kF1(D),hookName:`PostToolUse:${Q.name}`,toolUseID:B,hookEvent:"PostToolUse"})}}}catch(W){r(W instanceof Error?W:Error(String(W)))}}async function*JZ7(A,Q,B,G,Z,Y,J,X,I){let W=Date.now();try{let V=(await A.getAppState()).toolPermissionContext.mode;for await(let H of WM0(Q.name,B,Z,Y,A,J,V,A.abortController.signal))try{if(H.message?.type==="attachment"&&H.message.attachment.type==="hook_cancelled"){l("tengu_post_tool_failure_hooks_cancelled",{toolName:Q.name,queryChainId:A.queryTracking?.chainId,queryDepth:A.queryTracking?.depth}),yield{message:o9({type:"hook_cancelled",hookName:`PostToolUseFailure:${Q.name}`,toolUseID:B,hookEvent:"PostToolUseFailure"})};continue}if(H.message)yield{message:H.message};if(H.blockingError)yield{message:o9({type:"hook_blocking_error",hookName:`PostToolUseFailure:${Q.name}`,toolUseID:B,hookEvent:"PostToolUseFailure",blockingError:H.blockingError})};if(H.additionalContexts&&H.additionalContexts.length>0)yield{message:o9({type:"hook_additional_context",content:H.additionalContexts,hookName:`PostToolUseFailure:${Q.name}`,toolUseID:B,hookEvent:"PostToolUseFailure"})}}catch(D){let F=Date.now()-W;l("tengu_post_tool_failure_hook_error",{messageID:G,toolName:Q.name,isMcp:Q.isMcp??!1,duration:F,queryChainId:A.queryTracking?.chainId,queryDepth:A.queryTracking?.depth,...I?{mcpServerType:I}:{},...X?{requestId:X}:{}}),yield{message:o9({type:"hook_error_during_execution",content:kF1(D),hookName:`PostToolUseFailure:${Q.name}`,toolUseID:B,hookEvent:"PostToolUseFailure"})}}}catch(K){r(K instanceof Error?K:Error(String(K)))}}async function*XZ7(A,Q,B,G,Z,Y,J){let X=Date.now();try{let I=await A.getAppState();for await(let W of XM0(Q.name,G,B,A,I.toolPermissionContext.mode,A.abortController.signal))try{if(W.message)yield{type:"message",message:{message:W.message}};if(W.blockingError){let K=YM0(`PreToolUse:${Q.name}`,W.blockingError);yield{type:"hookPermissionResult",hookPermissionResult:{behavior:"deny",message:K,decisionReason:{type:"hook",hookName:`PreToolUse:${Q.name}`,reason:K}}}}if(W.preventContinuation){if(yield{type:"preventContinuation",shouldPreventContinuation:!0},W.stopReason)yield{type:"stopReason",stopReason:W.stopReason}}if(W.permissionBehavior!==void 0){v(`Hook result has permissionBehavior=${W.permissionBehavior}`);let K={type:"hook",hookName:`PreToolUse:${Q.name}`,reason:W.hookPermissionDecisionReason};if(W.permissionBehavior==="allow")yield{type:"hookPermissionResult",hookPermissionResult:{behavior:"allow",updatedInput:W.updatedInput||B,decisionReason:K}};else yield{type:"hookPermissionResult",hookPermissionResult:{behavior:W.permissionBehavior,message:W.hookPermissionDecisionReason||`Hook PreToolUse:${Q.name} ${tMB(W.permissionBehavior)} this tool`,decisionReason:K}}}if(A.abortController.signal.aborted){l("tengu_pre_tool_hooks_cancelled",{toolName:Q.name,queryChainId:A.queryTracking?.chainId,queryDepth:A.queryTracking?.depth}),yield{type:"message",message:{message:o9({type:"hook_cancelled",hookName:`PreToolUse:${Q.name}`,toolUseID:G,hookEvent:"PreToolUse"})}},yield{type:"stop"};return}}catch(K){r(K instanceof Error?K:Error(String(K)));let V=Date.now()-X;l("tengu_pre_tool_hook_error",{messageID:Z,toolName:Q.name,isMcp:Q.isMcp??!1,duration:V,queryChainId:A.queryTracking?.chainId,queryDepth:A.queryTracking?.depth,...J?{mcpServerType:J}:{},...Y?{requestId:Y}:{}}),yield{type:"message",message:{message:o9({type:"hook_error_during_execution",content:kF1(K),hookName:`PreToolUse:${Q.name}`,toolUseID:G,hookEvent:"PreToolUse"})}},yield{type:"stop"}}}catch(I){r(I instanceof Error?I:Error(String(I))),yield{type:"stop"};return}}function kF1(A){if(A instanceof lY)return A.message||b_;if(!(A instanceof Error))return String(A);let B=ZM0(A).filter(Boolean).join(`
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

RangeError: Maximum call stack size exceeded

Exception in PromiseRejectCallback:
node:internal/process/promises:278
  const promiseInfo = maybeUnhandledPromises.get(promise);
                                             ^

RangeError: Maximum call stack size exceeded
Steps to Reproduce

I was in the middle of a large coding session. No specific steps to reproduce.
Claude Model

Opus
Is this a regression?

I don't know
Last Working Version

_No response_
Claude Code Version

2.1.1
Platform

Anthropic API
Operating System

Windows
Terminal/Shell

Windows Terminal
Additional Information

_No response_
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