Browser / Page / Locator

browser-harness-js executes JavaScript in a persistent Node daemon. Use a quoted heredoc for coherent work. Top-level await works; multi-statement snippets need return. Store cross-call state on globalThis; local const bindings do not survive. Returned strings print directly; objects print JSON. Console output goes to the daemon log, not the CLI response.

Connect and scope

browser-harness-js <<'EOF'
await browser.connect();                 // or { port: 9222 } / { wsUrl: 'ws://…' }
return await browser.tabs();             // inspect; never silently pick tabs[0]
EOF

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