No-root Claude Code install on locked-down macOS (Node LTS in ~/node + npm)

install-claude-noroot.sh

#!/usr/bin/env bash
# No-root Claude Code install on locked-down macOS.
# Node LTS (prebuilt) -> ~/node, then @anthropic-ai/claude-code via npm.
# No root, no Xcode CLT, no git. Needs nodejs.org + registry.npmjs.org reachable.
set -euo pipefail
cd ~
A=$([ "$(uname -m)" = arm64 ] && echo arm64 || echo x64)
echo ">> Detecting latest Node LTS for darwin-$A ..."
ver=$(curl -fsSL https://nodejs.org/dist/index.json | tr '}' '\n' | grep '"lts":"' | head -1 | grep -oE 'v[0-9]+\.[0-9]+\.[0-9]+' | head -1)
[ -n "$ver" ] || { echo "!! Could not resolve Node LTS version from nodejs.org (blocked?)."; exit 1; }
file="node-$ver-darwin-$A.tar.gz"
url="https://nodejs.org/dist/$ver/$file"
echo ">> Node $ver — downloading $url"
curl -fL -o ~/node.tar.gz "$url"
tar -xzf ~/node.tar.gz -C ~
rm -rf ~/node && mv ~/"node-$ver-darwin-$A" ~/node
rm -f ~/node.tar.gz
export PATH="$HOME/node/bin:$PATH"
grep -q 'HOME/node/bin' ~/.zshrc 2>/dev/null || echo 'export PATH="$HOME/node/bin:$PATH"' >> ~/.zshrc
echo ">> Node $(node -v), npm $(npm -v)"
echo ">> Installing @anthropic-ai/claude-code ..."
npm install -g @anthropic-ai/claude-code
grep -q DISABLE_AUTOUPDATER ~/.zshrc 2>/dev/null || echo 'export DISABLE_AUTOUPDATER=1' >> ~/.zshrc
echo ">> DONE. Open a new terminal (or: source ~/.zshrc), then run:  claude --version"