[BUG] RangeError: Invalid string length

As mentioned in #887, in my case, this was caused by a CLI call to a shell command that never exited.

Simple repro:

➜ claude -p "Run an infinitely looping shell command like 'yes' and capture its output. Do not use 'timeout' or 'head' or anything. Just call it." --dangerously-skip-permissions

same error for me on macos.

playwright tests running crashes claude

Same crash.

file:///home/jon/.nvm/versions/node/v18.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:624
`),I.add(A.uuid)}}async getAllTranscripts(){await this.loadAllSessions();let A=[...this.messages.values()],B=new Set(A.map((Q)=>Q.parentUuid));return A.filter((Q)=>!B.has(Q.uuid)).map((Q)=>this.getTranscript(Q)).filter((Q)=>Q.length)}getTranscript(A){let B=[],Q=A;while(Q)B.unshift(Q),Q=Q.parentUuid?this.messages.get(Q.parentUuid):void 0;return B}async getLastLog(A){let{messages:B}=await Hf1(A);if(B.size===0)return null;let I=Array.from(B.values()).sort((D,Y)=>new Date(Y.timestamp).getTime()-new Date(D.timestamp).getTime())[0];if(!I)return null;let G=[],Z=I;while(Z)G.unshift(Z),Z=Z.parentUuid?B.get(Z.parentUuid):void 0;return G}loadAllSessions=_0(async()=>{let A=bG1(Cf1),B=b1();if(this.didLoad)return this;try{B.statSync(A)}catch{return this}let I=B.readdirSync(A).filter((Z)=>Z.isFile()&&Z.name.endsWith(".jsonl")).map((Z)=>Is(A,Z.name)),G=await Promise.all(I.sort((Z,D)=>{let Y=B.statSync(Z),W=B.statSync(D);return Y.mtime.getTime()-W.mtime.getTime()}).map(async(Z)=>{let 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                                                               

RangeError: Invalid string length
    at Socket.<anonymous> (file:///home/jon/.nvm/versions/node/v18.18.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:624:7437)
    at Socket.emit (node:events:517:28)
    at Socket.emit (node:domain:489:12)
    at addChunk (node:internal/streams/readable:335:12)
    at readableAddChunk (node:internal/streams/readable:308:9)
    at Readable.push (node:internal/streams/readable:245:10)
    at Pipe.onStreamRead (node:internal/stream_base_commons:190:23)

Node.js v18.18.0

crashes for me as well, WSL Ubuntu, running a unit test. My test was causing a tight loop, thats probably the cause.. ;) should be caught tho instead of crashing claude.

same thing here, multiple times in a row.. after starting it up again with --continue it crashes with exactly the same issue again after 2-3 commands. only using fresh session helps..

file:///home/heiningair/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:643
`),I.add(A.uuid)}}async getAllTranscripts(){await this.loadAllSessions();let A=[...this.messages.values()],B=new Set(A.map((Q)=>Q.parentUuid));return A.filter((Q)=>!B.has(Q.uuid)).map((Q)=>this.getTranscript(Q)).filter((Q)=>Q.length)}getTranscript(A){let B=[],Q=A;while(Q)B.unshift(Q),Q=Q.parentUuid?this.messages.get(Q.parentUuid):void 0;return B}async getLastLog(A){let{messages:B}=await ca1(A);if(B.size===0)return null;let I=Array.from(B.values()).sort((Z,F)=>new Date(F.timestamp).getTime()-new Date(Z.timestamp).getTime())[0];if(!I)return null;let D=[],G=I;while(G)D.unshift(G),G=G.parentUuid?B.get(G.parentUuid):void 0;return D}getAllCheckpoints(A){let B=new Map,Q=A[A.length-1]?.sessionId;if(Q){let I=this.checkpoints.get(Q)?.values()||[];for(let D of I)B.set(D.commit,D)}return Array.from(B.values())}loadAllSessions=U0(async()=>{let A=Fd(ie),B=b1();if(this.didLoad)return this;try{B.statSync(A)}catch{return this}let 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${I}s`;if(Q>0)return`${Q}m ${I}s`;return`${I}s`}function HI(A){let B=A>=1000;return new Intl.NumberFormat("en",{notation:"compact",minimumFractionDigits:B?1:0,maximumFractionDigits:1}).format(A).toLowerCase()}function zl0(A,B={}){let{style:Q="narrow",numeric:I="always",now:D=new Date}=B,G=A.getTime()-D.getTime(),Z=Math.trunc(G/1000),F=[{unit:"year",seconds:31536000,shortUnit:"y"},{unit:"month",seconds:2592000,shortUnit:"mo"},{unit:"week",seconds:604800,shortUnit:"w"},{unit:"day",seconds:86400,shortUnit:"d"},{unit:"hour",seconds:3600,shortUnit:"h"},{unit:"minute",seconds:60,shortUnit:"m"},{unit:"second",seconds:1,shortUnit:"s"}];for(let{unit:W,seconds:J,shortUnit:C}of F)if(Math.abs(Z)>=J){let X=Math.trunc(Z/J);if(Q==="narrow"&&J<86400)return Z<0?`${Math.abs(X)}${C} ago`:`in ${X}${C}`;return new Intl.RelativeTimeFormat("en",{style:"long",numeric:I}).format(X,W)}if(Q==="narrow")return Z<=0?"0s ago":"in 0s";return new 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A)this.add(B)}getRecent(A){let B=[],Q=this.size<this.capacity?0:this.head,I=Math.min(A,this.size);for(let D=0;D<I;D++){let G=(Q+this.size-I+D)%this.capacity;B.push(this.buffer[G])}return B}toArray(){if(this.size===0)return[];let A=[],B=this.size<this.capacity?0:this.head;for(let Q=0;Q<this.size;Q++){let I=(B+Q)%this.capacity;A.push(this.buffer[I])}return A}clear(){this.head=0,this.size=0}length(){return this.size}}var Ml0=137,Rl0=143;function Ol0(A){let B=null,Q="";A.on("data",(D)=>{if(B)B.write(D);else Q+=D});let I=()=>Q;return{get:I,asStream(){return B=new dgQ({highWaterMark:10485760}),B.write(I()),Q="",B}}}function Pl0(A,B,Q,I){let D="running",G,Z=Ol0(A.stdout),F=Ol0(A.stderr);if(I){let X=new ra1(10),V=0,K=(H)=>{let q=H.toString().split(`

RangeError: Invalid string length
    at Socket.<anonymous> (file:///home/heiningair/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:643:8969)
    at Socket.emit (node:events:530:35)
    at Socket.emit (node:domain:489:12)
    at addChunk (node:internal/streams/readable:561:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)
    at Readable.push (node:internal/streams/readable:392:5)
    at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)

reproducing here also :

```

RangeError: Invalid string length
at Socket.<anonymous> (file:///Users/silouane/.nvm/versions/node/v22.15.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1431:1678)
at Socket.emit (node:events:530:35)
at Socket.emit (node:domain:489:12)
at addChunk (node:internal/streams/readable:561:12)
at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)
at Readable.push (node:internal/streams/readable:392:5)
at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)

`The CLI tried to buffer unlimited data in memory, injected by mistake through a path in the prompt`. So ... size limit implementation & error handling is wrong ?


------- 

// looking into it , just foudn the second part related to https://github.com/anthropics/claude-code/issues/1103
Weird stuff start here, it happened to me 4 times already, claude-cli break. then I can't restart it , Can't install it back without cleaning the existing one, location issue. THis is a scneario like Corrupted installation: 

The crash left the Claude Code installation in a broken state, with the yoga.wasm file missing or inaccessible.

the link trace: 

node:internal/modules/cjs/loader:1401
const err = new Error(message);
^

Error: Cannot find module './yoga.wasm'
Require stack:

• /Users/silouane/.nvm/versions/node/v22.15.1/lib/node_modules/@anthropic-ai/claude-code/cli.js

at Function._resolveFilename (node:internal/modules/cjs/loader:1401:15)
at Function.resolve (node:internal/modules/helpers:145:19)
at file:///Users/silouane/.nvm/versions/node/v22.15.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:772:22853
at ModuleJob.run (node:internal/modules/esm/module_job:274:25)
at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:644:26)
at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:116:5) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/Users/silouane/.nvm/versions/node/v22.15.1/lib/node_modules/@anthropic-ai/claude-code/cli.js'
]
}

Claude Code CLI 
    ↓
Ink (React for terminals)
    ↓
yoga-layout-prebuilt (npm package)
    ↓
yoga.wasm (WebAssembly binary)



if anyone reproduced smth like that 🤷‍♂️  the package corruption. Don't really understand how the 2 are links, or even if they are at all, but 4 times begin to not sound like a coincidence. 

This looks like an issue with the pipes used for handling output from invoked processes. When the CLI spawns a tool, its stdout/stderr streams are buffered into memory. If the process writes a large amount of data, those buffers can grow beyond safe limits, leading to the RangeError: Invalid string length. So it’s not the model output itself, but how the CLI accumulates data from child process pipes.

I’ve specifically seen this happen with the GetDiagnostics tool when connected to the IDE and there are a large number of diagnostic issues (linter, compiler, formatting errors, etc.). I’ve also reproduced it when running large test suites that produce very verbose output.

Also getting this error again and again:

/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1436

• View comments on a Github PR: gh api repos/foo/bar/pulls/123/comments}var je2=A1(Lz(),1);import{constants as VP6,readFileSync as KP6,existsSync as HP6}from"node:fs";var gz0=A1(Lz(),1);function uz0(A){if(/\d\s*<<\s*\d/.test(A)||/\[\[\s*\d+\s*<<\s*\d+\s*\]\]/.test(A)||/\$\(\(.*<<.*\)\)/.test(A))return!1;return/<<-?\s*(?:(['"]?)(\w+)\1|\\(\w+))/.test(A)}function cT6(A){let B=/'(?:[^'\\]|\\.)*\n(?:[^'\\]|\\.)*'/,Q=/"(?:[^"\\]|\\.)*\n(?:[^"\\]|\\.)*"/;return B.test(A)||Q.test(A)}function Ik1(A,B=!0){if(uz0(A)||cT6(A)){let Z='${A.replace(/'/g,'"'"')}';if(uz0(A))return Z;return B?${Z} < /dev/null:Z}if(B)return gz0.default.quote([A,"<","/dev/null"]);return gz0.default.quote([A])}function mz0(A){if(uz0(A))return!1;return!0}import{execSync as ye2,spawn as zP6}from"node:child_process";import{isAbsolute as DP6,resolve as CP6}from"node:path";import*as ke2 from"node:os";import{PassThrough as pT6}from"stream";var Ke2=A1(Je2(),1);class rZ1{capacity;buffer;head=0;size=0;constructor(A){this.capacity=A;this.buffer=new Array(A)}add(A){if(this.buffer[this.head]=A,this.head=(this.head+1)%this.capacity,this.size<this.capacity)this.size++}addAll(A){for(let B of A)this.add(B)}getRecent(A){let B=[],Q=this.size<this.capacity?0:this.head,Z=Math.min(A,this.size);for(let G=0;G<Z;G++){let Y=(Q+this.size-Z+G)%this.capacity;B.push(this.buffer[Y])}return B}toArray(){if(this.size===0)return[];let A=[],B=this.size<this.capacity?0:this.head;for(let Q=0;Q<this.size;Q++){let Z=(B+Q)%this.capacity;A.push(this.buffer[Z])}return A}clear(){this.head=0,this.size=0}length(){return this.size}}var Xe2=137,Fe2=143;function Ve2(A){let B=null,Q="";A.on("data",(G)=>{if(B)B.write(G);else Q+=G});let Z=()=>Q;return{get:Z,asStream(){return B=new pT6({highWaterMark:10485760}),B.write(Z()),Q="",B}}}function He2(A,B,Q,Z){let G="running",Y,I=Ve2(A.stdout),W=Ve2(A.stderr);if(Z){let K=new rZ1(10),H=0,z=(D)=>{let w=D.toString().split(

RangeError: Invalid string length
at Socket.<anonymous> (file:///Users/waleedzebkhan/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1436:1678)
at Socket.emit (node:events:530:35)
at Socket.emit (node:domain:489:12)
at addChunk (node:internal/streams/readable:561:12)
at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)
at Readable.push (node:internal/streams/readable:392:5)
at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)

Node.js v22.14.0

1.0.108 (Claude Code)
OS: MacOS 15.6.1

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