mirror of
https://github.com/NousResearch/hermes-agent.git
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070093a318
Gating this behind an opt-in was the wrong call. A dev server already executes arbitrary local JS — vite's module graph, every postinstall in node_modules — so a loopback debugging port does not meaningfully widen what a `npm run dev` session can already do, and `perf:serve` has opened one unconditionally all along. Requiring the variable also defeated the point: the tooling exists to be reached for mid-task, and a capability you must remember to enable before launching is one you don't have when you need it. So the port opens on 9222 — the same port scripts/eval.mjs and scripts/perf/lib/cdp.mjs already default to — for any dev-server run. HERMES_DESKTOP_CDP_PORT stops being an on-switch and becomes an override: a different port, or `off` to disable. The hard gate is unchanged and still checked first: a packaged build never opens the port, and no env value talks it into it. Neither does an unpackaged `electron .` against dist/, which is how the packaged app gets smoke tested. Refusals only log when they contradict something the developer asked for (a typo'd port, an explicit `off`). Packaged and dist runs are closed by design and stay quiet.
46 lines
1.7 KiB
JavaScript
46 lines
1.7 KiB
JavaScript
// Simple eval helper — runs an expression and returns the result.value.
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//
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// node scripts/eval.mjs "document.title"
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// HERMES_DESKTOP_CDP_PORT=9333 node scripts/eval.mjs "document.title"
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//
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// Needs a renderer with a debugging port: launch `hgui` / `npm run dev` with
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// HERMES_DESKTOP_CDP_PORT set (see electron/dev-cdp.ts).
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const port = Number(process.env.HERMES_DESKTOP_CDP_PORT || 9222)
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let targets
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try {
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targets = await (await fetch(`http://127.0.0.1:${port}/json`)).json()
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} catch {
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console.error(
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`no renderer debugging port on 127.0.0.1:${port}. ` +
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'Dev-server runs (`npm run dev` / `hgui`) open one automatically — check the app is running, ' +
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'and that HERMES_DESKTOP_CDP_PORT is not set to "off" or another port.'
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)
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process.exit(1)
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}
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const t = targets.find((t) => t.url.includes('5174')) ?? targets.find((t) => t.type === 'page')
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if (!t) {
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console.error(`no page target on 127.0.0.1:${port} (found ${targets.length} target(s))`)
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process.exit(1)
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}
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const ws = new WebSocket(t.webSocketDebuggerUrl)
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let id = 0
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const pending = new Map()
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ws.addEventListener('message', (ev) => {
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const m = JSON.parse(ev.data)
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if (pending.has(m.id)) { pending.get(m.id)(m); pending.delete(m.id) }
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})
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await new Promise((r) => ws.addEventListener('open', r))
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const send = (method, params) => new Promise((res) => { const i = ++id; pending.set(i, res); ws.send(JSON.stringify({ id: i, method, params })) })
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const expr = process.argv[2] || '1+1'
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const r = await send('Runtime.evaluate', { expression: expr, returnByValue: true, awaitPromise: true })
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if (r.result.exceptionDetails) {
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console.error('EXCEPTION:', r.result.exceptionDetails.exception?.description)
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} else {
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console.log(JSON.stringify(r.result.result.value, null, 2))
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}
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ws.close()
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