[BUG] claude code does not start on big endian systems (linux on z, z/OS, AIX)

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?

When claude is invoked on linux on z, I get:

This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason:
UnboundTypeError: Cannot call Node.createDefault due to unbound types: 0x4c1b0000
    at Error.<anonymous> (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:79:7908)
    at new <anonymous> (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:79:7706)
    at p3 (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:80:5653)
    at Function.BA [as createDefault] (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:80:13892)
    at Function.<anonymous> (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:79:3485)
    at B.G.<computed> [as create] (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:79:2225)
    at jM1 (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:90:3426)
    at new DO1 (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:193:5148)
    at file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:193:7383
    at AT9 (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:193:7639)
q^CTypeError: this.renderer is not a function
    at DO1.onRender (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:193:5768)
    at DO1.unmount (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:193:6220)
    at tUA.emit (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:43:1641)
    at #I (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:43:3804)
    at #Q.emit (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:43:3221)
    at process.exit (node:internal/process/per_thread:240:15)
    at process.<anonymous> (file:///root/node-v22.19.0-linux-s390x/lib/node_modules/@anthropic-ai/claude-code/cli.js:3735:791)
    at process.emit (node:events:531:35)
    at process.emit (node:domain:489:12)

Gemini CLI also has this problem and it can be worked around by building yoga wasm (from ink dependency) as big endian.

Here is the PR for that: https://github.com/facebook/yoga/issues/1859

What Should Happen?

claude should execute normally

Error Messages/Logs

Steps to Reproduce

1. login to a linux on z system
2. install claude via instructions
3. claude

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.25 (Claude Code)

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_