39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
// quick probe — read state of the renderer
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const list = await (await fetch('http://127.0.0.1:9222/json/list')).json()
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const tgt = list.find(t => t.type === 'page' && t.url.startsWith('http'))
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console.log('target:', tgt?.url)
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if (!tgt) process.exit(1)
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const ws = new WebSocket(tgt.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 (m.id != null && pending.has(m.id)) {
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pending.get(m.id)(m)
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pending.delete(m.id)
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}
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})
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await new Promise(r => ws.addEventListener('open', r))
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const send = (method, params = {}) =>
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new Promise(r => {
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const i = ++id
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pending.set(i, r)
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ws.send(JSON.stringify({ id: i, method, params }))
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})
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const r = await send('Runtime.evaluate', {
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expression: `({
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url: location.href,
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title: document.title,
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rootChildren: document.getElementById('root')?.children.length ?? 0,
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rootInner: (document.getElementById('root')?.innerHTML ?? '').slice(0, 300),
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hasComposer: !!document.querySelector('[data-slot="composer-rich-input"]'),
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bootStage: (document.querySelector('[data-slot*="boot"]')?.getAttribute('data-slot')) ?? null,
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bodyText: document.body.innerText.slice(0, 300),
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errorCount: window.__errors?.length ?? 'n/a'
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})`,
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returnByValue: true
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})
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console.log('raw:', JSON.stringify(r, null, 2))
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ws.close()
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